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Ghazy A, Chaban R, Pfeiffer P, Probst C, Dohle DS, Treede H, Dorweiler B. Three-Dimensional-Evaluation of Aortic Changes after Frozen Elephant Trunk (FET) in Zone 0 vs. Zone 2 in Acute Type A Aortic Dissection. J Clin Med 2024; 13:2677. [PMID: 38731205 PMCID: PMC11084169 DOI: 10.3390/jcm13092677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/29/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024] Open
Abstract
Introduction: The management of aortic dissection has evolved significantly over the decades, with the frozen elephant trunk (FET) procedure emerging as a key technique for treating complex aortic pathologies. Recent practices involve deploying the FET prosthesis more proximally in the aorta (Zone 0) to reduce complications, leading to questions about its impact on long-term aortic remodeling compared to traditional Zone 2 deployment. Methods: This retrospective analysis utilized 3D segmentation software to assess the volumetric changes in aortic remodeling after acute Type A aortic dissections, comparing FET stent graft deployment in Zone 0 and Zone 2. The study included 27 patients operated on between 2020 and 2022, with volumetric measurements taken from postoperative and 6-month follow-up CT scans. Statistical analyses were performed to evaluate the differences in the aortic true lumen (TL) and the perfused false lumen (PFL) between the two groups. Results: Both Zone 0 and Zone 2 deployments resulted in significant true lumen (TL) increases (Z0 p = 0.001, Z2 p < 0.001) and perfused false lumen (PFL) decreases (Z0 p = 0.02, Z2 p = 0.04), with no significant differences in volumetric changes between the groups (p = 0.7 post op and p = 0.9 after 6 months). The distal anastomosis in Zone 0 did not compromise the aortic remodeling outcomes and was associated with reduced distal ischemia and cerebral perfusion times (p = 0.041). The angle measurements in Zone 0 did not show any significant changes after the 6-month control (p = 0.2). However, in Zone 2, a significant change was detected. (p = 0.022). The part comparison analyses did not indicate significant differences in aortic deviation between the groups (p = 0.62), suggesting comparable effectiveness in aortic remodeling. Conclusions: Performing the distal anastomosis more proximally in Zone 0 offers technical advantages without compromising the effectiveness of aortic remodeling compared to the traditional Zone 2 deployment. This finding supports the continued recommendation of Zone 0 deployment in the management of acute Type A aortic dissections, with ongoing studies being needed to confirm the long-term outcomes and survival benefits.
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Affiliation(s)
- Ahmed Ghazy
- Department of Cardiac and Vascular Surgery, University of Mainz, Faculty of Medicine and University Hospital Mainz, 55131 Mainz, Germany
| | - Ryan Chaban
- Department of Cardiac and Vascular Surgery, University of Mainz, Faculty of Medicine and University Hospital Mainz, 55131 Mainz, Germany
| | - Philipp Pfeiffer
- Department of Cardiac and Vascular Surgery, University of Mainz, Faculty of Medicine and University Hospital Mainz, 55131 Mainz, Germany
| | - Chris Probst
- Department of Cardiac and Vascular Surgery, University of Mainz, Faculty of Medicine and University Hospital Mainz, 55131 Mainz, Germany
| | - Daniel-Sebastian Dohle
- Department of Cardiac and Vascular Surgery, University of Mainz, Faculty of Medicine and University Hospital Mainz, 55131 Mainz, Germany
| | - Hendrik Treede
- Department of Cardiac and Vascular Surgery, University of Mainz, Faculty of Medicine and University Hospital Mainz, 55131 Mainz, Germany
| | - Bernhard Dorweiler
- Department of Vascular and Endovascular Surgery, University of Cologne, Faculty of Medicine and University Hospital Cologne, 50937 Cologne, Germany
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Wen A, Xiao N, Zhu Y, Gao Z, Qin Q, Shan S, Li W, Sun Y, Wang Y, Zhao Y. Spatial Trueness Evaluation of 3D-Printed Dental Model Made of Photopolymer Resin: Use of Special Structurized Dental Model. Polymers (Basel) 2024; 16:1083. [PMID: 38675003 PMCID: PMC11053721 DOI: 10.3390/polym16081083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
(1) Background: Various 3D printers are available for dental practice; however, a comprehensive accuracy evaluation method to effectively guide practitioners is lacking. This in vitro study aimed to propose an optimized method to evaluate the spatial trueness of a 3D-printed dental model made of photopolymer resin based on a special structurized dental model, and provide the preliminary evaluation results of six 3D printers. (2) Methods: A structurized dental model comprising several geometrical configurations was designed based on dental crown and arch measurement data reported in previous studies. Ninety-six feature sizes can be directly measured on this original model with minimized manual measurement errors. Six types of photo-curing 3D printers, including Objet30 Pro using the Polyjet technique, Projet 3510 HD Plus using the Multijet technique, Perfactory DDP and DLP 800d using the DLP technique, Form2 and Form3 using the SLA technique, and each printer's respective 3D-printable dental model materials, were used to fabricate one set of physical models each. Regarding the feature sizes of the simulated dental crowns and dental arches, linear measurements were recorded. The scanned digital models were compared with the design data, and 3D form errors (including overall 3D deviation; flatness, parallelism, and perpendicularity errors) were measured. (3) Results: The lowest overall 3D deviation, flatness, parallelism, and perpendicularity errors were noted for the models printed using the Objet30 Pro (overall value: 45 μm), Form3 (0.061 ± 0.019 mm), Objet30 Pro (0.138 ± 0.068°), and Projet 3510 HD Plus (0.095 ± 0.070°), respectively. In color difference maps, different deformation patterns were observed in the printed models. The feature size proved most accurate for the Objet30 Pro fabricated models (occlusal plane error: 0.02 ± 0.36%, occlusogingival direction error: -0.06 ± 0.09%). (4) Conclusions: The authors investigated a novel evaluation approach for the spatial trueness of a 3D-printed dental model made of photopolymer resin based on a structurized dental model. This method can objectively and comprehensively evaluate the spatial trueness of 3D-printed dental models and has a good repeatability and generalizability.
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Affiliation(s)
- Aonan Wen
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology, Beijing 100081, China; (A.W.); (N.X.); (Y.Z.); (Q.Q.); (Y.S.)
| | - Ning Xiao
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology, Beijing 100081, China; (A.W.); (N.X.); (Y.Z.); (Q.Q.); (Y.S.)
- Department of Stomatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Yujia Zhu
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology, Beijing 100081, China; (A.W.); (N.X.); (Y.Z.); (Q.Q.); (Y.S.)
| | - Zixiang Gao
- Institute of Medical Technology, Peking University Health Science Center, Beijing 100191, China; (Z.G.); (S.S.); (W.L.)
| | - Qingzhao Qin
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology, Beijing 100081, China; (A.W.); (N.X.); (Y.Z.); (Q.Q.); (Y.S.)
| | - Shenyao Shan
- Institute of Medical Technology, Peking University Health Science Center, Beijing 100191, China; (Z.G.); (S.S.); (W.L.)
| | - Wenbo Li
- Institute of Medical Technology, Peking University Health Science Center, Beijing 100191, China; (Z.G.); (S.S.); (W.L.)
| | - Yuchun Sun
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology, Beijing 100081, China; (A.W.); (N.X.); (Y.Z.); (Q.Q.); (Y.S.)
| | - Yong Wang
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology, Beijing 100081, China; (A.W.); (N.X.); (Y.Z.); (Q.Q.); (Y.S.)
- Institute of Medical Technology, Peking University Health Science Center, Beijing 100191, China; (Z.G.); (S.S.); (W.L.)
| | - Yijiao Zhao
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Key Laboratory of Digital Stomatology, Beijing 100081, China; (A.W.); (N.X.); (Y.Z.); (Q.Q.); (Y.S.)
- Institute of Medical Technology, Peking University Health Science Center, Beijing 100191, China; (Z.G.); (S.S.); (W.L.)
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Fischer G, Schneeberger M, Petter SA, Scheibler AG, Wolf P, Calcagni M, Schweizer A, Reissner L. Motion Analysis of the Wrist and Finger Joints in Sport Climbing. Bioengineering (Basel) 2024; 11:370. [PMID: 38671791 PMCID: PMC11048272 DOI: 10.3390/bioengineering11040370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/28/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Climbing is a fast-growing sport, with one of the most common injuries being a rupture of the finger flexor tendon pulley. The strain on pulleys increases as finger joints flex. However, to our knowledge, no study has conducted a kinematic analysis of climbers' fingers. Thus, this study aimed to examine finger kinematics during typical climbing tasks. Eleven elite climbers performed a sequence of four climbing moves, which were recorded by an optical motion capture system. Participants used crimp, half-crimp, and open-hand grips for three trials each, with the fourth condition involving campusing using any grip except crimp. Mean proximal interphalangeal joint (PIP) flexion during the holding phase was 87° (SD 12°), 70° (14°) and 39° (27°) for the crimp, half-crimp and open-hand grip, respectively. Hence, inter-individual PIP flexion ranges overlap between different gripping conditions. Two different movement patterns emerged in the open-hand grip, possibly influenced by the use of the little finger, leading to varying degrees of flexion in the middle and ring fingers. Avoiding little finger usage in the open-hand grip may reduce load during pulley rupture rehabilitation. The implications of PIP joint angle variability on individual pulley injury risk or prevention warrant further investigation. Motion capture proved effective for understanding finger kinematics during climbing and could guide future studies on pulley injury risk factors.
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Affiliation(s)
- Gabriella Fischer
- Institute for Biomechanics, Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
- Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, 8091 Zurich, Switzerland;
| | - Micha Schneeberger
- Department of Orthopedics, Balgrist University Hospital, 8008 Zurich, Switzerland (A.S.); (L.R.)
| | - Stefan Andreas Petter
- Institute for Biomechanics, Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland
| | - Anne-Gita Scheibler
- Department of Orthopedics, Balgrist University Hospital, 8008 Zurich, Switzerland (A.S.); (L.R.)
| | - Peter Wolf
- Sensory-Motor Systems Lab., Department of Health Sciences and Technology, ETH Zurich, 8092 Zurich, Switzerland;
| | - Maurizio Calcagni
- Division of Plastic Surgery and Hand Surgery, University Hospital Zurich, 8091 Zurich, Switzerland;
| | - Andreas Schweizer
- Department of Orthopedics, Balgrist University Hospital, 8008 Zurich, Switzerland (A.S.); (L.R.)
| | - Lisa Reissner
- Department of Orthopedics, Balgrist University Hospital, 8008 Zurich, Switzerland (A.S.); (L.R.)
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Wu CP, Wu ML, Hsu HT. 3D Size-Dependent Dynamic Instability Analysis of FG Cylindrical Microshells Subjected to Combinations of Periodic Axial Compression and External Pressure Using a Hermitian C2 Finite Layer Method Based on the Consistent Couple Stress Theory. Materials (Basel) 2024; 17:810. [PMID: 38399061 PMCID: PMC10890606 DOI: 10.3390/ma17040810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024]
Abstract
This work develops a three-dimensional (3D) weak formulation, based on the consistent couple stress theory (CCST), for analyzing the size-dependent dynamic instability behavior of simply-supported, functionally graded (FG) cylindrical microshells that are subjected to combinations of periodic axial compression and external pressure. In our formulation, the microshells are artificially divided into nl layers. The displacement components of each individual layer are selected as the primary variables, which are expanded as a double Fourier series in the in-plane domain and are interpolated with Hermitian C2 polynomials in the thickness direction. Incorporating the layer-wise displacement models into our weak formulation, we develop a Hermitian C2 finite layer method (FLM) for addressing the current issue. The accuracy and the convergence rate of our Hermitian C2 FLM are validated by comparing the solutions it produces with the accurate two-dimensional solutions of critical loads and critical pressures of FG cylindrical macroshells and single-walled carbon nanotubes, which were reported in the literature. The numerical results show the effects of the material length-scale parameter, the inhomogeneity index, the radius-to-thickness and length-to-radius ratios, the load magnitude ratio, and the static and dynamic load factors on the first principal and first secondary instability regions of parametric resonance of simply-supported FG cylindrical microshells are significant.
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Affiliation(s)
- Chih-Ping Wu
- Department of Civil Engineering, National Cheng Kung University, Tainan City 70101, Taiwan
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Bencherqui S, Barone S, Cevidanes L, Perrin JP, Corre P, Bertin H. 3D analysis of condylar and mandibular remodeling one year after intra-oral ramus vertical lengthening osteotomy. Clin Oral Investig 2024; 28:114. [PMID: 38267793 PMCID: PMC10904022 DOI: 10.1007/s00784-024-05504-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/08/2024] [Indexed: 01/26/2024]
Abstract
OBJECTIVES Among the existing techniques for the correction of mandibular posterior vertical insufficiency (PVI), the intra-oral ramus vertical lengthening osteotomy (IORVLO) can be proposed as it allows simultaneous correction of mandibular height and retrusion. This study assessed the 3D morpho-anatomical changes of the ramus-condyle unit and occlusal stability after IORVLO. MATERIALS AND METHODS This retrospective analysis compared immediate and 1-year post-operative 3D CBCT reconstructions. The analysis focused on the condylar height (primary endpoint) and on the changes in condylar (condylar diameter, condylar axis angle) and mandibular (ramus height, Frankfort-mandibular plane angle, gonion position, intergonial distance, angular remodeling) parameters. Additionally, this analysis investigated the maxillary markers and occlusal stability. RESULTS On the 38 condyles studied in 21 included patients (mean age 23.7 ± 3.9 years), a condylar height (CH) loss of 0.66 mm (p < 0,03) was observed, with no correlation with the degree of ramus lengthening (mean 13.3 ± 0.76 mm). Only one patient presented an occlusal relapse of Class II, but a 3.4 mm (28%) condylar diameter loss and a 33% condylar volume reduction with loss of 1 mm and 3.4 mm in CH and condyle diameter, respectively. A mean 3.56 mm (p < 0.001) decrease in ramus height was noted, mainly due to bone resorption in the mandibular angles. CONCLUSION This study confirms the overall stability obtained with IORVLO for the correction of PVI. CLINICAL RELEVANCE This study aims to precise indication of IORVLO, and to validate the clinical and anatomical stability of results.
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Affiliation(s)
- Samy Bencherqui
- Nantes Université, CHU Nantes, Service de Chirurgie Maxillo-Faciale Et Stomatologie, 44000, Nantes, France.
| | - Selene Barone
- School of Dentistry, Department of Health Sciences, Magna, Graecia University of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Lucia Cevidanes
- Department of Orthodontics & Ped Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Jean-Philippe Perrin
- Nantes Université, CHU Nantes, Service de Chirurgie Maxillo-Faciale Et Stomatologie, 44000, Nantes, France
| | - Pierre Corre
- Nantes Université, CHU Nantes, Service de Chirurgie Maxillo-Faciale Et Stomatologie, 44000, Nantes, France
- Nantes Université, Oniris, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, 44000, Nantes, France
| | - Hélios Bertin
- Nantes Université, CHU Nantes, Service de Chirurgie Maxillo-Faciale Et Stomatologie, 44000, Nantes, France
- Nantes Université, Oniris, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, 44000, Nantes, France
- Nantes Université, Univ Angers, CHU Nantes, INSERM, CNRS, CRCI2NA, 44000, Nantes, France
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Al-Zain AO, Baeesa L, Jassoma E, Alghilan MA, Hariri M, Ismail EH, Münchow EA. Assessment of internal porosities for different placement techniques of bulk-fill resin-based composites: a micro-computed tomography study. Clin Oral Investig 2023; 27:7489-7499. [PMID: 37971540 DOI: 10.1007/s00784-023-05337-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/11/2023] [Indexed: 11/19/2023]
Abstract
OBJECTIVES The aim was to compare the porosity of different bulk-fill resin-based composites (RBCs) placement techniques to the conventional incremental technique using microcomputed tomography (μ-CT). MATERIAL AND METHODS Occlusal cavities were prepared on extracted human molars, divided into five groups based on the placement technique (n = 10/group). Techniques examined were Monoblock-two-step (SureFil SDR flow + Ceram.X), Monoblock-two-step (Tetric EvoFlow Bulk-Fill + Tetric EvoCeram Bulk-Fill), Monoblock-one-step (Tetric EvoCeram Bulk-Fill), Monoblock with sonic activation (SonicFill2), and incremental technique (Filtek Z250). μ-CT scanning (SkyScan, Bruker, Belgium) assessed the number, volume of closed pores, and total porosity. Analysis of variance on ranks was used (Student-Newman-Keuls method and Mann-Whitney rank-sum test), to determine the significance of RBC viscosity and the sonication placement technique. The Spearman correlation method assessed the correlation between porosity characteristics (α = 0.05). RESULTS The SonicFill2 presented a higher number of closed pores than the other groups (p < 0.05). The overall porosity within the restoration seemed greater in this order: Filtek Z250 > SonicFill2 > Tetric EvoFlow Bulk-Fill + Tetric EvoCeram Bulk-Fill > Tetric EvoCeram Bulk-Fill > SureFil SDR Flow + Ceram.X. Sonication was associated with increased number (p = 0.005) and volume (p = 0.036) of closed pores. A strong correlation was observed between the number and volume of closed pores (R2 = 0.549, p < 001). CONCLUSIONS The monoblock technique with sonic activation showed significantly more internal porosity than the other placement techniques. Sonication during application contributed to the higher number and volume of closed pores than the passive bulk-fill application. CLINICAL RELEVANCE Using bulk-fill materials enhances efficiency, yet void formation remains an issue, depending on viscosity and active/passive delivery of materials. Clinicians must familiarize themselves with effective placement techniques to reduce void formation and optimizing treatment outcomes.
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Affiliation(s)
- Afnan O Al-Zain
- Restorative Dentistry Department, King Abdulaziz University Faculty of Dentistry, P.O. Box 80209, 21589, Jeddah, Saudi Arabia.
- Advanced Technology Dental Research Laboratory, King Abdulaziz University, P.O. Box 80209, 21589, Jeddah, Saudi Arabia.
| | - Lina Baeesa
- Orthodontics Department, King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi Arabia
| | - Elaf Jassoma
- Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Maryam A Alghilan
- Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Ministry of National Gaurd Health Affairs, Riyadh, Kingdom of Saudi Arabia
- King Abdullah International Medical Research Center, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Murooj Hariri
- Restorative Dentistry Department, King Fahad General Hospital, 23325, Jeddah, Saudi Arabia
| | - Eman H Ismail
- Department of Clinical Dental Sciences, College of Dentistry, Princess Nourah bint Abdulrahman University, 11671, Riyadh, Saudi Arabia
| | - Eliseu A Münchow
- Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande Do Sul, Porto Alegre, RS, Brazil
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Mancini L, Thoma DS, Marchetti E, Jung RE, Strauss FJ. The 3D emergence profile on implant-supported restorations: A method for evaluating restorative angles. J ESTHET RESTOR DENT 2023; 35:1264-1270. [PMID: 37317633 DOI: 10.1111/jerd.13069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/25/2023] [Accepted: 05/30/2023] [Indexed: 06/16/2023]
Abstract
STATEMENT OF PROBLEM Emerging evidence indicates that the emergence profile and subsequent restorative angle play a crucial role in clinical outcomes and can potentially affect the development and progression of peri-implant diseases. However, the traditional evaluation of the emergence profile and angle has been limited to mesial and distal sites using periapical x-rays, without considering the buccal sites. PURPOSE To describe a novel 3D method to estimate the emergence profile and restorative angles around single implant-supported crowns including buccal sites. MATERIALS AND METHODS A total of 30 implant-supported crowns (11 molars, 8 premolars, 8 central incisors and 1 canine) were extra-orally scanned using an intraoral scanner and the STL files produced were imported into a 3D software. The crown/abutment interface of each crown was delineated, and apico-coronal lines were automatically drawn following the shape of the crown. Three reference points were defined on the apico-coronal lines at the transition edge of the biological (BC) and the esthetic zone (EC) and the resulting angles were then calculated. The reliability of the measurements (2D and 3D) were assessed using the intraclass correlation coefficient (ICC). RESULTS In anterior restorations, the mean angle of the esthetic zone amounted to 162 ± 14° at mesial sites, to 140 ± 10° at buccal sites and to 163 ± 11° at distal sites. The corresponding angles at the biological zones, amounted to 155 ± 13° at mesial sites, 139 ± 15° at buccal sites and 157 ± 5° at distal sites. In posterior restorations, the mean angle of the esthetic zone amounted to 162 ± 12° at mesial sites, to 157 ± 13 at buccal sites and to 162 ± 11 at distal sites. The corresponding angles at the biological zone, amounted to 158 ± 8 at mesial sites, 150 ± 15° at buccal sites and 156 ± 10 at distal sites. The ICC for all measurements ranged between 0.77 and 0.99 indicating a good intra-examiner reliability. CONCLUSION Within the limitations of the present study, the 3D analysis seems to be a reliable and applicable method for the quantitative evaluation of the emergence profile in daily practice. Future randomized clinical trials are needed to assess whether a 3D analysis with the ensuing the emergence profile serves as a predictor for clinical outcomes. CLINICAL SIGNIFICANCE The development and implementation of a 3D workflow will provide technicians and dentists with the ability to assess the restorative angle of implant-supported restorations during the provisional phase and the final restoration. This approach may help achieve an aesthetically pleasing restoration while minimizing potential clinical complications.
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Affiliation(s)
- Leonardo Mancini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Daniel S Thoma
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Enrico Marchetti
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Ronald Ernst Jung
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Franz J Strauss
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
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Zhou M, Liu L, Chen Z, Ma B, Fu X, Cheng Y, Kan S, Liu C, Zhao X, Feng S, Jiang Z, Zhu R. Characteristics of paraspinal muscle degeneration in patients with adult degenerative scoliosis. Eur Spine J 2023; 32:4020-4029. [PMID: 37747546 DOI: 10.1007/s00586-023-07940-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/24/2023] [Accepted: 08/30/2023] [Indexed: 09/26/2023]
Abstract
INTRODUCTION Adult degenerative scoliosis (ADS) is a 3D deformity that greatly affects the quality of life of patients and is closely related to the quality of paraspinal muscles (PSMs), but the specific degenerative characteristics have not been described. METHODS This study included ADS patients who were first diagnosed in our hospital from 2018 to 2022. Muscle volume (MV) and fat infiltration (FI) of PSM were measured by 3D reconstruction, and spinal parameters were assessed by X-ray. The values of convex side (CV) and concave side (CC) were compared. RESULTS Fifty patients were enrolled with a mean age of 64.1 ± 5.8 years old. There were significant differences in MV, FI, and Cobb angle between male and female groups. The MV of MF and PS on the CC was significantly larger than that on the CV. In the apex and the segments above the apex, the FI of the MF on the CC is greater than the CV, and in the CV of the segment below the apex, the FI of the MF is greater than the CC. Besides, there was a significant positive correlation between the FI and Cobb angle in the MF of the CC-CV. CONCLUSION There were significant differences in the MV and FI of PSM on both sides of the spine in ADS patients. It was determined that the PSM of ADS showed different degrees of degeneration in different levels of the lumbar spine and were positively correlated with Cobb angle.
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Affiliation(s)
- Mengmeng Zhou
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Linyan Liu
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Ziyu Chen
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Boyuan Ma
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Xuanhao Fu
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Yuelin Cheng
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Shunli Kan
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Chengjiang Liu
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Xinyan Zhao
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Sa Feng
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Zehua Jiang
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China
| | - Rusen Zhu
- Tianjin Union Medical Center, 190 Jieyuan Road. Hongqiao District, Tianjin, 300121, China.
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9
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Engert J, Bauer D, Spahn B, Müller-Graff FT, Voelker J, Neun T, Althoff D, Hagen R, Hackenberg S, Rak K. Computed tomographic 3D analysis of the cochlear aqueduct-potential and limitations of clinical imaging. Acta Otolaryngol 2023; 143:931-935. [PMID: 38127466 DOI: 10.1080/00016489.2023.2294921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023]
Abstract
Background: The cochlear aqueduct (CA), which connects the scala tympani and the subarachnoid space, and its accompanying structures appear to have a significant relevance during cochlear implantation and an accurate visualization in clinical imaging is of great interest. Aims and Objective: This study aims to determine which potential and limitations clinically available imaging modalities have in the visualization of the CA. Methods: Micro-CT, flat-panel volume computed tomography with and without secondary reconstruction (fpVCT, fpVCTseco) and multislice computed tomography (MSCT) of 10 temporal bone specimen were used for 3D analysis of the CA. Results: FpVCTseco proved superior in visualizing the associated structures and lateral portions of the CA, which merge into the basal turn of the cochlea. All clinical imaging modalities proved equal in analyzing the length, total volume of the CA and its area of the medial orifice. Conclusion: The choice of the most accurate clinical imaging modality to evaluate the CA and its associated structures depends on the clinical or scientific question. Furthermore, this study should provide a basis for further investigations analyzing the CA.
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Affiliation(s)
- Jonas Engert
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany
| | - Daniel Bauer
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany
| | - Bjoern Spahn
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany
| | - Franz-Tassilo Müller-Graff
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany
| | - Johannes Voelker
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany
| | - Tilmann Neun
- Institute for Diagnostic and Interventional Neuroradiology, University of Wuerzburg, Wuerzburg, Germany
| | - Daniel Althoff
- Fraunhofer Development Center for X-ray Technology, Wuerzburg, Germany
| | - Rudolf Hagen
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany
| | - Stephan Hackenberg
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany
| | - Kristen Rak
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Wuerzburg, Germany
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10
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Ito A, Mayama A, Oyanagi T, Ogura H, Seiryu M, Fukunaga T, Kitaura H, Mizoguchi I. Three-dimensional morphologic analysis of the maxillary alveolar bone after anterior tooth retraction with temporary anchorage devices. Angle Orthod 2023; 93:667-674. [PMID: 37922391 PMCID: PMC10633794 DOI: 10.2319/120122-827.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 05/01/2023] [Indexed: 11/05/2023] Open
Abstract
OBJECTIVES To investigate three-dimensional (3D) morphologic changes in the alveolar bone around the maxillary central incisors of patients who underwent premolar extraction and subsequent anterior tooth retraction using temporary anchorage devices (TADs). MATERIALS AND METHODS The subjects consisted of 16 patients with bimaxillary protrusion. The maxillary anterior teeth were retracted using sliding or loop mechanics and TADs for anchorage reinforcement. Cephalograms and computed tomography scans taken pretreatment and posttreatment were registered with respect to the palatal structures. The movement of the maxillary central incisors and morphologic changes in the anterior alveolar bone were evaluated quantitatively. RESULTS Displacement in the palatal direction was observed in the alveolar bone around the incisors and the interdental septum. The displacement and bone remodeling/tooth movement ratio were larger on the labial side than the palatal side, and decreased progressively from the crest to apex level. The bone thickness was significantly increased on the labial side and decreased on the palatal side. CONCLUSIONS Regional differences exist in morphologic changes of the alveolar bone during anterior tooth retraction using TADs. Attention should be paid to the crest region of the palatal alveolar bone because of its small original thickness and low remodeling activity.
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Affiliation(s)
- Arata Ito
- Corresponding author: Dr Arata Ito, Division of Orthodontics and Dentofacial Orthopedics, Department of Community Social Dentistry, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan (e-mail: )
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11
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Miao M, Cai H, Zhang L, Cai H. Analysis of lower extremity alignment (LEA) in children with recurrent patellar dislocation by EOS system. Front Pediatr 2023; 11:1291739. [PMID: 37954430 PMCID: PMC10634357 DOI: 10.3389/fped.2023.1291739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 10/05/2023] [Indexed: 11/14/2023] Open
Abstract
Objectives Recurrent patellar dislocation (RPD) greatly affects active young individuals, necessitating the identification of risk factors for a better understanding of its cause. Previous research has connected RPD to lower limb alignment (LEA) abnormalities, such as increased femoral anteversion, tibial external rotation, knee valgus, and flexion. This study aims to use EOS technology to detect RPD-related LEA anomalies, enabling three-dimensional assessment under load conditions. Methods A total of 100 limbs (50 in the RPD group, 50 in the control group) were retrospectively analyzed. In the RPD group, we included limbs with recurrent patellar dislocation, characterized by dislocations occurs at least two times, while healthy limbs served as the control group. We used EOS technology, including 2D and 3D imaging, to measure and compare the following parameters between the two groups in a standing position: Femoral neck shaft angle (NSA), Mechanical femoral tibial angle (MFTA), Mechanical lateral distal femoral angle (mLDFA), Medial proximal tibial angle (MPTA), Anatomical femoral anteversion (AFA), External tibial torsion (ETT), and Femorotibial rotation (FTR). Results The significant differences between the two groups were shown in NSA 3/2D, MFTA 3/2D, mLDFA 3/2D, MPTA 3D, AFA, FTR. No significant difference was shown in MPTA 2D, ETT between the RPD group and the control group. Further binary logistic regression analysis. Further binary logistic regression analysis was conducted on the risk factors affecting RPD mentioned above. and found four risk factors for binary logistic regression analysis: mLDFA (3D), AFA, NSA(3D), and FTR. Conclusions EOS imaging identified abnormal LEA parameters, including NSA, MFTA, mLDFA, MPTA, AFA, and FTR, as risk factors for RPD. Children with these risk factors should receive moderate knee joint protection.
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Affiliation(s)
| | | | | | - Haoqi Cai
- Department of Orthopedic Surgery, Shanghai Children’s Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
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12
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Yang Y, Qu J, Pan B, Yu X. Quantification of Bony Depression in Mastoid Region After Expander Implantation for Microtia Reconstruction in Hemifacial Microsomia. Ear Nose Throat J 2023:1455613231198982. [PMID: 37752821 DOI: 10.1177/01455613231198982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023] Open
Abstract
Object: Three-stage expansion method represents the most common form of microtia reconstruction in hemifacial microsomia (HFM). Although the complication related expander has lowered owing to the current advances, bony depression in mastoid region in microtia patients with hemifacial microsomia was observed in clinical work. The aim of this study was to quantify bony depression after retroauricular expander implantation and identify associated factors. Methods: 42 patients were enrolled and studied prospectively utilizing 3-dimensional (3D) evaluation. Craniofacial computed tomography (CT) was performed before the first (pre-expansion) and the second stage (post-expansion) and 3D quantification was done to quantify bony depression in mastoid region by using CT data. Univariate analysis was performed to identify factors associated with bony depression in mastoid region. Results: The mean level of mastoid depression was 0.83 mm (range: 0.07-4.08 mm), and the max level of mastoid depression was 1.40 mm (range: 0.20-6.65 mm). In univariate analysis, capsular duration of expansion and expansion volume were associated factors with mastoid depression. Conclusion: This study showed the possibility of mastoid depression following expander implantation for microtia reconstruction in hemifacial microsomia. Plastic surgeons should be aware of the possibility and associated factors of bony depression in mastoid region following expander implantation to optimize microtia reconstruction for patients with HFM.
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Affiliation(s)
- Yang Yang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Jianwen Qu
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Bo Pan
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Xiaobo Yu
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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13
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Yang Y, Zhao Z, Pan B, Yu X. Morphologic Variability of Bone and Soft Tissue in Microtia With Hemifacial Microsomia. Ear Nose Throat J 2023:1455613231197768. [PMID: 37735888 DOI: 10.1177/01455613231197768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023] Open
Abstract
Objective: Microtia patients with hemifacial microsomia (HFM) have a host of distinct anatomical disorder of skeletal and soft tissue asymmetries. The purpose of this study was to assess soft tissue discrepancies in microtia patients with HFM and their correlation with skeletal discrepancies. Methods: A total of 42 patients were enrolled and studied prospectively using a 3-dimensional superimposition and color mapping of the soft and hard tissues. Mirroring techniques created perfectly symmetric models for comparison. Differences between affected and normal sides were evaluated in 5 areas: retroauricular mastoid, malar, maxillary frontal, mandibular frontal, and gonion areas. Pearson correlations were used to assess the relationship between skeletal and soft tissue asymmetry. Results: Hard tissue asymmetry ranged from 0.79 mm (mandibular frontal) to 1.29 mm (malar), while soft tissue asymmetry ranged from 1.34 mm (maxillary frontal) to 5.26 mm (retroauricular mastoid). Correlations between skeletal and soft tissue asymmetry varied, with the strongest correlation observed at the retroauricular mastoid area and the weakest at the maxillary frontal area. Conclusion: There was a high correlation between bone and soft tissue hypoplasia at the retroauricular mastoid area, while the other evaluated areas showed poor correlation between skeletal and soft tissue asymmetries. Clinicians should assess each component separately for optimal treatment planning in microtia patients with HFM.
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Affiliation(s)
- Yang Yang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Zhao Zhao
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Bo Pan
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Xiaobo Yu
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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14
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Hoch A, Grossenbacher G, Jungwirth-Weinberger A, Götschi T, Fürnstahl P, Zingg PO. The periacetabular osteotomy: angulation of the supraacetabular osteotomy for quantification of correction. Hip Int 2023; 33:934-940. [PMID: 35672882 DOI: 10.1177/11207000221103079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Malcorrection of the acetabular fragment in periacetabular osteotomy (PAO) is associated with inferior outcomes. 2-dimensional radiographic parameters are being used for intraoperative verification of a satisfactory result. After reorientation of the fragment, the acetabular version must be verified with an intraoperative radiograph. In the case of an unsatisfactory correction, a reorientation would be required. A slim and radiation-free intraoperative navigation method to directly quantify the correction is highly desirable. AIM To find out whether the measurable angulation of the supraacetabular osteotomy can be used for this purpose. METHODS To determine the angulation, 13 consecutive patients who underwent a PAO were investigated. The preoperative and postoperative standard radiographs as well as CT scans were available. The surgically produced alteration of radiographic parameters was correlated to tilting and spreading of the supraacetabular osteotomy planes. RESULTS Tilting of the supraacetabular osteotomy planes correlates strongly to alteration of the lateral centre-edge angle (LCEA) and the acetabular index (ACI), whereas spreading of the same planes showed also a strong correlation, but to the LCEA only. 1° of tilting resulted in a 0.2° alteration of the LCEA and a 0.5° alteration of the ACI, whereas 1° of spreading resulted in a 0.5° alteration of the LCEA. CONCLUSIONS This study shows that the measurable angulation of the supraacetabular osteotomy planes can be used to monitor the three-dimensional reorientation of the acetabular fragment in PAO. As long as sophisticated modalities are lacking, this technique offers an easy way to intraoperatively navigate the correction in PAO.
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Affiliation(s)
- Armando Hoch
- Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Switzerland
| | | | | | - Tobias Götschi
- Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Switzerland
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Philipp Fürnstahl
- Research in Orthopaedic Computer Science, Balgrist University Hospital, University of Zurich, Switzerland
| | - Patrick O Zingg
- Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Switzerland
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15
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Sado N, Yoshioka S, Fukashiro S. Mechanical power flow from trunk and lower limb joint power to external horizontal power in the track and field block start. Eur J Sport Sci 2023; 23:1903-1912. [PMID: 35913105 DOI: 10.1080/17461391.2022.2109067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Sprint start performance is measured as the horizontal external power, the time-average rate of horizontal kinetic energy generation. Although joint powers have been examined, not all segment rotations on which positive powers are exerted necessarily contribute to forward propulsion; details regarding horizontal power remain unclear. Here we show the contributions of segment rotations to the forward and upward propulsion. We calculated the joint power exerted on each segment and the contributions from segment rotations to the normalised average horizontal and vertical external powers (P ^ hori z ¯ and P ^ vert ¯ ) during the sprint start by 12 male sprinters. Over half P ^ hori z ¯ (55 ± 6%) is due to the front thigh rotation (0.30 ± 0.04), on which the hip and knee exert positive power. Pelvic rotation does not contribute to P ^ hori z ¯ (0.00 ± 0.01). This highlights the importance of the hip-extensors strength and the need for it accompanied by the lumbar-extensors strength cancelling out the hip-extensors action on the pelvis and promoting hip-extensor-induced thigh rotation. The front thigh rotation decreases P ^ vert ¯ (-0.08 ± 0.02). P ^ vert ¯ is primarily induced by rotations of the thorax (0.04 ± 0.01), lumbar region (0.06 ± 0.02), and pelvis (0.04 ± 0.01). Rotations of the lower-limb segments did not contribute to upward propulsion. Therefore, the front thigh induces downward movement, which is counterbalanced by the trunk segments. We bridge the gap in the current understanding from joint power to P ^ hori z ¯ . We present a case involving segments on which positive joint powers are exerted similarly but play different roles: forward or upward propulsion, thereby providing insights into directional control mechanisms in explosive initiation of motion. HIGHLIGHTSWe examined the contributions of segment rotations to the normalised average horizontal and vertical external powers (P ^ hori z ¯ , P ^ vert ¯ ): the sprint start performance and the parameter to assess upward propulsion.Over half the total P ^ hori z ¯ (55 ± 6%) is due to the front thigh rotation, while the front thigh rotation decreases P ^ vert ¯ , which was counterbalanced by rotations of the thorax, lumbar region, and pelvis.We bridge the gap in the current understanding from joint power to P ^ hori z ¯ and further present a case involving segments on which positive joint powers are exerted but play different roles: forward or upward propulsion.
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Affiliation(s)
- Natsuki Sado
- Faculty of Health and Sports Science, University of Tsukuba, Tsukuba, Japan
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan
| | | | - Senshi Fukashiro
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan
- Japan Women's College of Physical Education, Tokyo, Japan
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Zhong J, Li M, Zhang H, Qin J. Fine-Grained 3D Modeling and Semantic Mapping of Coral Reefs Using Photogrammetric Computer Vision and Machine Learning. Sensors (Basel) 2023; 23:6753. [PMID: 37571537 PMCID: PMC10422330 DOI: 10.3390/s23156753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/20/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Corals play a crucial role as the primary habitat-building organisms within reef ecosystems, forming expansive structures that extend over vast distances, akin to the way tall buildings define a city's skyline. However, coral reefs are vulnerable to damage and destruction due to their inherent fragility and exposure to various threats, including the impacts of climate change. Similar to successful city management, the utilization of advanced underwater videography, photogrammetric computer vision, and machine learning can facilitate precise 3D modeling and the semantic mapping of coral reefs, aiding in their careful management and conservation to ensure their survival. This study focuses on generating detailed 3D mesh models, digital surface models, and orthomosaics of coral habitats by utilizing underwater coral images and control points. Furthermore, an innovative multi-modal deep neural network is designed to perform the pixel-wise semantic segmentation of orthomosaics, enabling the projection of resulting semantic maps onto a 3D space. Notably, this study achieves a significant milestone by accomplishing semantic fine-grained 3D modeling and rugosity evaluation of coral reefs with millimeter-level accuracy, providing a potent means to understand coral reef variations under climate change with high spatial and temporal resolution.
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Affiliation(s)
- Jiageng Zhong
- State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road No. 129, Wuhan 430079, China; (J.Z.); (H.Z.); (J.Q.)
| | - Ming Li
- State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road No. 129, Wuhan 430079, China; (J.Z.); (H.Z.); (J.Q.)
- Institute of Geodesy and Photogrammetry, ETH Zurich, 8093 Zurich, Switzerland
| | - Hanqi Zhang
- State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road No. 129, Wuhan 430079, China; (J.Z.); (H.Z.); (J.Q.)
| | - Jiangying Qin
- State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road No. 129, Wuhan 430079, China; (J.Z.); (H.Z.); (J.Q.)
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Al-Tayar B, Al-Somairi MAA, ALshoaibi LH, Wang X, Wang J, Liu J, Al-Tayar B, An X, Si Q. Impact of molar teeth distalization by clear aligners on temporomandibular joint: a three-dimensional study. Prog Orthod 2023; 24:25. [PMID: 37455279 DOI: 10.1186/s40510-023-00474-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 05/15/2023] [Indexed: 07/18/2023] Open
Abstract
BACKGROUND Maxillary molar distalization is a common technique used in the non-extraction treatment of Angle Class II malocclusion that can effectively correct the molar relationship and create spaces for anterior teeth alignment. However, this approach may also impact the temporomandibular joint (TMJ) due to predictable changes in the posterior vertical dimension. Despite its widespread use, Class II malocclusions correction by molar distalization with clear aligners has not been investigated for their effects on the TMJ. Therefore, this study aimed to analyze the impact of sequential molar distalization using clear aligners on the TMJ. METHODS Three-dimensional CBCT scans of 23 non-growing patients (7 males, 16 females; mean age 29.8 ± 4.6 years) with skeletal class I or II malocclusion and a bilateral molar class II relationship treated by sequential upper molars distalization with orthodontic clear aligners (Invisalign, Align Technology, San Josè, Ca, USA). A total of 46 joints were examined before and after molar distalization using Anatomage InvivoDental 6.0.3. Linear and angular measurements of the mandibular joint were measured, including joint parameters, inclination, position, and the dimension of the condyle and articular fossa. In addition, 3D volumetric spaces of the joint were analyzed. All data were statistically analyzed by paired T test to determine the differences between the pre-and post-orthodontic procedures. RESULTS No statistically significant differences were found in all primary effects resulting from maxillary molars distalization by clear aligners on TMJ components measurements and joint spaces between T0 and T1. Meanwhile, statistically significant differences were observed in the linear position of the upper molars and the molar relationship parameter with at least P ≤ 0.05. CONCLUSION Treatment by sequential upper molars distalization with clear aligners does not lead to significant TMJ parameters changes in condyle and fossa spaces, dimensions, and positions.
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Affiliation(s)
- Barakat Al-Tayar
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
- Orthodontics Division, Faculty of Medicine and Health Sciences, Taiz University, Taiz, Yemen
| | - Majedh A A Al-Somairi
- Orthodontics Department, School of Stomatology, China Medical University, Shenyang, 110000, China
| | - Lina H ALshoaibi
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Xiaoli Wang
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Junbin Wang
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Jiajie Liu
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Baher Al-Tayar
- Graduate Student of Dental Health Science, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
- Department of Dentistry, Faculty of Medical Sciences, Aljanad University for Science and Technology, Taiz, Yemen
| | - Xiaoli An
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China.
| | - Qingzong Si
- Department of Oral Medicine, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
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18
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Kawano M, Wada K, Hemmi Y, Yokose S. Effect of Nd:YAG laser on bone formation in rat tibia defects: three-dimensional micro-computed tomography image analysis. Lasers Med Sci 2023; 38:158. [PMID: 37421518 DOI: 10.1007/s10103-023-03820-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 06/23/2023] [Indexed: 07/10/2023]
Abstract
Nd:YAG laser is in common clinical use for the treatment of tissue incision, transpiration, and haemostasis in soft tissues. However, few studies have reported the effects of low-level laser therapy (LLLT) from Nd:YAG laser on bone healing. The aim of this study was to perform three-dimensional (3D) morphological evaluation of the photobiomodulation of Nd:YAG laser in bone defects in rat tibiae using micro-computed tomography CT (micro-CT) imaging. A bone defect was created in each tibia of 30 rats. The right side was treated with LLLT from Nd:YAG laser (LT group) daily until sacrifice and the left tibiae served as controls (control group). All tibiae underwent micro-CT imaging at 7, 14, and 21 days after the operation. Three-dimensional image analysis of bone volume (BV) and bone surface area (BS) of new bone formation in the defects was performed and histologic analysis was conducted for all tibiae. Tibial BV and BS values were highest in both groups at 7 days after the operation and decreased at 14 days after operation. BV and BS values were both significantly higher in the LT group than in the control group at 7 and 14 days. There was no significant difference between the groups for either metric at 21 days. The present findings demonstrate that Nd:YAG laser simulates bone formation during the early healing period.
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Affiliation(s)
- Munemitsu Kawano
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama, 350-0283, Japan
| | - Kei Wada
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama, 350-0283, Japan.
| | - Yuichi Hemmi
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama, 350-0283, Japan
| | - Satoshi Yokose
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama, 350-0283, Japan
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Yang Y, Yue X, Yu X, Pan B. Free dermofat grafting for chest deformity in microtia reconstruction. J Plast Reconstr Aesthet Surg 2023; 82:130-136. [PMID: 37163828 DOI: 10.1016/j.bjps.2023.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 12/09/2022] [Accepted: 01/29/2023] [Indexed: 02/10/2023]
Abstract
OBJECTIVE Chest deformity is one of the complications that occurs after costal cartilage harvesting for auricle reconstruction. In this study, we presented a novel method of free dermofat grafting to repair cartilage defect and aimed to evaluate its effect in ameliorating chest deformity. METHODS Seventy-six pediatric patients were included in the study, comprising free dermofat grafting group (n = 38) and control group (n = 38). After harvesting costal cartilage, empty perichondrial space of right seventh costal cartilage was filled with free dermofat grafts in free dermofat grafting group. Thoracic computed tomography (CT) was performed three months after surgery and 3D colormap quantification was performed to quantify chest surface asymmetry. The quantified data were further analyzed to compare chest asymmetry level in free dermofat grafting and control groups. RESULTS In the free dermofat grafting group, the mean of asymmetry level was 2.2 mm. While in the control group, the mean of asymmetry was 5.7 mm. After a comparison between the two groups, the level of asymmetry showed a significant difference (p < 0.01). CONCLUSION Free dermofat grafting method is easy to perform and a feasible option for ameliorating chest deformity in microtia reconstruction.
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Affiliation(s)
- Yang Yang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100144, China
| | - Xiaowei Yue
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100144, China
| | - Xiaobo Yu
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100144, China.
| | - Bo Pan
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100144, China.
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20
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Xu Z, Ge T, Li Q, Cai R, Wu J, Sun Y. Correcting intervertebral rotation and scoliosis simultaneously by oblique lumbar interbody fusion: a 3D analysis of EOS images. Front Surg 2023; 10:1145059. [PMID: 37377672 PMCID: PMC10291135 DOI: 10.3389/fsurg.2023.1145059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
Purpose With advancements in minimally invasive techniques, oblique lumbar interbody fusion (OLIF) has gained widespread acceptance and is now commonly performed for adult degenerative scoliosis (ADS). The objective of this research paper is to evaluate three-dimensional (3D) intervertebral motions in EOS models before and after surgery and subsequently assess the efficacy of the 3D correction achieved through staged OLIF. Methods In this retrospective study, 29 consecutive patients diagnosed with ADS were included, with a mean age of 63.6 years, who underwent staged OLIF surgery between 2018 and 2021. Spinopelvic parameters were assessed using EOS images, and 3D models were reconstructed to measure intervertebral motion angles (IMAs) in 70 surgical intervertebral segments, comprising wedge, lordosis, and axial rotation angles. Regression analysis was conducted to compare IMAs in different planes before and after the staged OLIF surgery. Results Significant three-dimensional correction was observed in 70 intervertebral segments following the first-stage OLIF. The wedge angles decreased from 5.2°± 4.2° to 2.7°± 2.4° (P < 0.001). The lordosis angles increased from 5.1°± 5.9° to 7.8°± 4.6° (P = 0.014), while the axial rotation angles decreased from 3.8°± 2.6° to 2.3°± 2.1° (P < 0.001). Linear regression analysis revealed a positive correlation between wedge angles and axial angles preoperatively (P < 0.001, r = 0.43), as well as between corrected wedge angles and corrected axial angles (P < 0.001, r = 0.42). Conclusion This study demonstrated that intervertebral motions had a correlation between coronal and axial planes in lumbar degenerative scoliosis. First-stage OLIF was efficient at correcting segmental scoliosis by inserting cages while correcting rotation deformity simultaneously, as well as improving the sagittal spinopelvic parameters.
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Erdem H, Cevik Y, Safak NK, Soames RW, Pehlivan UA, Boyan N, Oguz O. Morphometric analysis of the infratemporal fossa using three-dimensional (3D) digital models. Surg Radiol Anat 2023; 45:729-734. [PMID: 37036494 DOI: 10.1007/s00276-023-03144-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/30/2023] [Indexed: 04/11/2023]
Abstract
PURPOSE The infratemporal fossa contains important neurovascular components and is directly related to other anatomical regions and structures. The morphometric distances between the bones forming its borders have not been thoroughly investigated. The aim of this study was to determine the morphometry of the infratemporal fossa. METHODS 3D models of the skull of 83 individuals were reconstructed from DICOM datasets, from which length, depth and width measurements were determined and compared between genders and the right and left sides. RESULTS All measurements obtained were significantly different between males and females. There were also significant differences between the left and right sides for depth and width measurements. CONCLUSION This is the first study to determine and investigate measurements of the infratemporal fossa; as such it provides a comprehensive view of the morphology of the fossa. It provides valuable information for surgical interventions and differential diagnoses of pathologies in this region, as well as enhancing its understanding in medical education.
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Affiliation(s)
- Huseyin Erdem
- Department of Anatomy, Faculty of Medicine, Cukurova University, 01330, Adana, Turkey.
| | - Yigit Cevik
- Department of Anatomy, Faculty of Medicine, Cukurova University, 01330, Adana, Turkey
| | - Nazire Kilic Safak
- Department of Anatomy, Faculty of Medicine, Cukurova University, 01330, Adana, Turkey
| | - Roger W Soames
- Centre for Anatomy and Human Identification, School of Science and Engineering, University of Dundee, Dundee, DD14HN, UK
| | - Umur Anil Pehlivan
- Department of Radiology, Baskent University Hospital Adana, 01330, Adana, Turkey
| | - Neslihan Boyan
- Department of Anatomy, Faculty of Medicine, Cukurova University, 01330, Adana, Turkey
| | - Ozkan Oguz
- Department of Anatomy, Faculty of Medicine, Cukurova University, 01330, Adana, Turkey
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Chaisrisawadisuk S, Phakdeewisetkul K, Sirichatchai K, Tongsai S, Hammam E, Prasad V, Moore MH. Early bone reformation after cranial vault remodelling for sagittal craniosynostosis: A retrospective 3D analysis. J Craniomaxillofac Surg 2023:S1010-5182(23)00057-4. [PMID: 37045612 DOI: 10.1016/j.jcms.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/02/2023] [Accepted: 04/02/2023] [Indexed: 04/14/2023] Open
Abstract
This study aims to measure postoperative bone reformation percentage, rates and patterns after cranial vault remodelling (CVR) in isolated non-syndromic sagittal craniosynostosis. Volumetric bone measurements were performed starting from the DICOM files of previously available postoperative CT scans. The 3D images were then resampled into the master box, and 'Skull 3D models' were derived. The percentage of bone reformation was investigated using automated 3D analysis software. The intra-rater reliability analysis revealed high reliability (Intraclass correlation coefficient = 0.99, p < 0.001). The median bone reformation volume and rate were 11.2 ml and 1.98 ml/week, respectively. The median percentage of bone reformation was 56.7% when the median postoperative CT timing was 6.1 weeks. As a statistic model, the linear plateau showed the highest Pseudo R2 in both volume and percentage of bone reformation predicting patterns. By using the calculated model at 9 weeks postoperatively, the re-osteogenesis reaches 80% of the total cranial defect. After CVR, the early bone reformation pattern was demonstrated as a linear plateau model rather than logarithmic. This study gives a better understanding of the pattern and quantity of re-osteogenesis at cranial defects after CVR. The statistic model can facilitate healthcare practitioners to predict bone reformation and improve postoperative care protocol in sagittal craniosynostosis management.
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Affiliation(s)
- Sarut Chaisrisawadisuk
- Cleft and Craniofacial SA, Women's and Children's Hospital, North Adelaide, South Australia, Australia; Division of Plastic Surgery, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kantapat Phakdeewisetkul
- Biomechanics Research Center, Meticuly Co. Ltd., Chulalongkorn University, Bangkok, Thailand; Advanced Materials Analysis Research Unit, Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
| | - Kanin Sirichatchai
- Biomechanics Research Center, Meticuly Co. Ltd., Chulalongkorn University, Bangkok, Thailand
| | - Sasima Tongsai
- Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Elie Hammam
- Department of Neurosurgery, Women's and Children's Hospital, North Adelaide, South Australia, Australia
| | - Vani Prasad
- Cleft and Craniofacial SA, Women's and Children's Hospital, North Adelaide, South Australia, Australia
| | - Mark H Moore
- Cleft and Craniofacial SA, Women's and Children's Hospital, North Adelaide, South Australia, Australia.
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Wu CP, Tan TF, Hsu HT. A Size-Dependent Finite Element Method for the 3D Free Vibration Analysis of Functionally Graded Graphene Platelets-Reinforced Composite Cylindrical Microshells Based on the Consistent Couple Stress Theory. Materials (Basel) 2023; 16:2363. [PMID: 36984243 PMCID: PMC10051386 DOI: 10.3390/ma16062363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/11/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
Within a framework of the consistent couple stress theory (CCST), a size-dependent finite element method (FEM) is developed. The three-dimensional (3D) free vibration characteristics of simply-supported, functionally graded (FG) graphene platelets (GPLs)-reinforced composite (GPLRC) cylindrical microshells are analyzed. In the formulation, the microshells are artificially divided into numerous finite microlayers. Fourier functions and Hermitian C2 polynomials are used to interpolate the in-surface and out-of-surface variations in the displacement components induced in each microlayer. As a result, the second-order derivative continuity conditions for the displacement components at each nodal surface are satisfied. Five distribution patterns of GPLs varying in the thickness direction are considered, including uniform distribution (UD) and FG A-type, O-type, V-type, and X-type distributions. The accuracy and convergence of the CCST-based FEM are validated by comparing the solutions it produces with the exact and approximate 3D solutions for FG cylindrical macroshells reported in the literature, for which the material length scale parameter is set at zero. Numerical results show that by increasing the weight fraction of GPLs by 1%, the natural frequency of FG-GPLRC cylindrical microshells can be increased to more than twice that of the homogeneous cylindrical microshells. In addition, the effects of the material length scale parameter, the GPL distribution patterns, and the length-to-thickness ratio of GPLs on natural frequencies of the FG-GPLRC cylindrical microshells are significant.
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Abstract
The plant cytoskeleton is instrumental in cellular processes such as cell growth, differentiation, and immune response. Microtubules, in particular, play a crucial role in morphogenesis by governing the deposition of plant cell wall polysaccharides and, in consequence, the cell wall mechanics and cell shape. Scrutinizing the microtubule dynamics is therefore integral to understanding the spatiotemporal regulation of cellular activities. In this chapter, we outline steps to acquire 3D images of microtubules in epidermal pavement cells of Arabidopsis thaliana cotyledons using a confocal microscope. We introduce the steps to assess the microtubule distribution and organization using image processing software Bitplane Imaris and ImageJ. We also demonstrate how the interpretation of image material can be facilitated by post-processing with general-purpose image enhancement software using methods trained by artificial intelligence-based algorithms.
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Affiliation(s)
- Amir J Bidhendi
- Department of Plant Science, McGill University, Ste-Anne-de-Bellevue, QC, Canada
| | - Bara Altartouri
- Department of Plant Science, McGill University, Ste-Anne-de-Bellevue, QC, Canada
| | - Anja Geitmann
- Department of Plant Science, McGill University, Ste-Anne-de-Bellevue, QC, Canada. .,ECP3-Multi-Scale Imaging Facility, McGill University, Sainte-Anne-de-Bellevue, QC, Canada.
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25
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Tavelli L, Zucchelli G, Stefanini M, Rasperini G, Wang HL, Barootchi S. Vertical soft tissue augmentation to treat implant esthetic complications: A prospective clinical and volumetric case series. Clin Implant Dent Relat Res 2023; 25:204-214. [PMID: 36759964 DOI: 10.1111/cid.13188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 12/23/2022] [Accepted: 01/23/2023] [Indexed: 02/11/2023]
Abstract
INTRODUCTION Challenging implant esthetic complications are often characterized by implant malpositioning and interproximal attachment loss of the adjacent teeth. However, limited evidence is available on the treatment of these conditions. The aim of this study was to evaluate the clinical, volumetric, and patient-reported outcome following treatment of peri-implant soft tissue dehiscences (PSTDs) exhibiting interproximal attachment loss on adjacent teeth, performed through vertical soft tissue augmentation with implant submersion. METHODS Ten subjects with isolated PSTD in the anterior maxilla characterized by adjacent dentition exhibiting interproximal attachment loss were consecutively enrolled and treated with horizontal and vertical soft tissue augmentation, involving crown and abutment removal, two connective tissue grafts, and submerge healing. Clinical outcomes of interest included mean PSTD coverage, mean PSTD reduction, clinical attachment level (CAL) gain at the implant and adjacent sites and soft tissue phenotype modifications at 1 year. Optical scanning was used for assessing volumetric changes. Professional assessment of esthetic outcomes was performed using the Implant Dehiscence coverage Esthetic Score (IDES), while patient-reported esthetic assessment involved a 0-10 visual analogue scale. RESULTS The mean PSTD depth reduction and mean PSTD coverage at 1 year were 2.25 mm, and 85.14%, respectively. A mean keratinized tissue width (KTW) gain of 1.15 mm was observed, while the mean gain in mucosal thickness (MT) was 1.58 mm. A mean CAL gain of 1.45 mm was obtained at the interproximal aspect of the adjacent dentition at 1 year. Greater linear dimensional (LD) changes were observed at the midfacial aspect of the implant compared to the interproximal sites. The mean final IDES was 6.90 points, while patient-reported esthetic evaluation was 8.83 points. CONCLUSIONS The present study demonstrated that vertical soft tissue augmentation with a submerged healing is an effective treatment approach for the treatment of challenging PSTDs with adjacent dentition exhibiting interproximal attachment loss. This technique can be effective in resolution of esthetic complications in most cases, providing a substantial gain in interproximal attachment levels at the adjacent dentition.
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Affiliation(s)
- Lorenzo Tavelli
- Department of Oral Medicine, Infection, and Immunity, Division of Periodontology, Harvard School of Dental Medicine, Boston, Massachusetts, USA.,Center for clinical Research and evidence synthesis In oral TissuE RegeneratION (CRITERION), Boston, Massachusetts, USA.,Department of Periodontics & Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Giovanni Zucchelli
- Department of Periodontics & Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA.,Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Martina Stefanini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Giulio Rasperini
- Department of Oral Medicine, Infection, and Immunity, Division of Periodontology, Harvard School of Dental Medicine, Boston, Massachusetts, USA.,Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.,IRCCS Foundation Polyclinic Ca' Granda, Milan, Italy
| | - Hom-Lay Wang
- Center for clinical Research and evidence synthesis In oral TissuE RegeneratION (CRITERION), Boston, Massachusetts, USA
| | - Shayan Barootchi
- Center for clinical Research and evidence synthesis In oral TissuE RegeneratION (CRITERION), Boston, Massachusetts, USA.,Department of Periodontics & Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
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26
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Aiupova IO, Butorina OA, Kolsanov AV, Popov NV, Tiunova NV, Davidiuk MA. [Lower jawbone structures symmetry evaluation using cone beam computed tomography]. Stomatologiia (Mosk) 2023; 102:33-38. [PMID: 37997311 DOI: 10.17116/stomat202310206133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
OBJECTIVE To assess the prevalence and quantitative characteristics of skeletal asymmetries of the body and lower jaw branches in three-dimensional space. MATERIALS AND METHODS Using depersonalized data archive, of 400 CBCT scans, forty studies were picked randomly. Patients aged 25 to 35 years participated in research, no history of maxillofacial reconstructive surgery; gender, race, and facial anomaly were ignored. Three experienced doctors, independently, identified 15 reference points on radiographic images of AUTOPLAN software. Expert consensus found in the orientation determination. Six planes and eight points were constructed, using Math algorithms and the Python OOP; body and branches of the lower jaw length measurements performed and processed automatically. RESULTS The study identified symmetry, using a method for determining parameters of the lower jaw in 3D space (Priority Reference No.2023100466 at 10.01.2023), modern dentistry research method. Both sides of data obtained shown asymmetry of the body and branches of the lower jaw occurred in 45% (18 people) and 67.5% (27 people) of cases. Forty percent of cases were noted with Mild asymmetry of the lower jaw body (16 people), moderate asymmetry noted in 5% (2 people). These parameters were 57.5% for branches, (23 people) and 10% (4 people). Combined form of anomaly observed in 37.5% (15 people) of cases, among which 12 people (75%) showed adaptive compensation of anomalies, which requires further investigation on a larger number of patients. CONCLUSION Lower body jaw asymmetry is prevalent (80%). Patients with moderate and serious anomaly form appeared in 15% of cases.
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Affiliation(s)
- I O Aiupova
- Samara State Medical University, Samara, Russia
| | | | | | - N V Popov
- Samara State Medical University, Samara, Russia
| | - N V Tiunova
- National Research Lobachevsky State University of Nizhni Novgorod, Nizhni Novgorod, Russia
| | - M A Davidiuk
- University of the People, Computer science, Pasadena, United States of America
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Soygur B, Foecke MH, Gaylord EA, Fries A, Li J, Arora R, Laird DJ. A Roadmap for Three-Dimensional Analysis of the Intact Mouse Ovary. Methods Mol Biol 2023; 2677:203-219. [PMID: 37464244 PMCID: PMC10796149 DOI: 10.1007/978-1-0716-3259-8_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Recent advances in tissue clearing methodologies have enabled three-dimensional (3D) visualization of the ovary and, consequently, in-depth exploration of the dynamic changes occurring at the single-cell level. Here we describe methods for whole-mount immunofluorescence, clearing, imaging, and analysis of whole ovarian tissue in 3D throughout murine development and aging.
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Affiliation(s)
- Bikem Soygur
- Department of Obstetrics, Gynecology and Reproductive Science, Center for Reproductive Sciences, Eli and Edythe Broad Center for Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, CA, USA
| | - Mariko H Foecke
- Department of Obstetrics, Gynecology and Reproductive Science, Center for Reproductive Sciences, Eli and Edythe Broad Center for Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, CA, USA
| | - Eliza A Gaylord
- Department of Obstetrics, Gynecology and Reproductive Science, Center for Reproductive Sciences, Eli and Edythe Broad Center for Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, CA, USA
| | - Adam Fries
- Genomics and Cell Characterization Core Facility, Institute of Molecular Biology, Eugene, OR, USA
| | - Jing Li
- Department of Obstetrics, Gynecology and Reproductive Science, Center for Reproductive Sciences, Eli and Edythe Broad Center for Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, CA, USA
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Ripla Arora
- Institute for Quantitative Health Science and Engineering, Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University, East Lansing, MI, USA
| | - Diana J Laird
- Department of Obstetrics, Gynecology and Reproductive Science, Center for Reproductive Sciences, Eli and Edythe Broad Center for Regeneration Medicine and Stem Cell Research, UCSF, San Francisco, CA, USA.
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Martin C, Touzard P, Horvais N, Puchaud P, Kulpa R, Bideau B, Sorel A. Influence of shoe torsional stiffness on foot and ankle biomechanics during tennis forehand strokes. Eur J Sport Sci 2022; 23:914-924. [PMID: 36437487 DOI: 10.1080/17461391.2022.2153232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tennis shoe characteristics need to minimise the risk of athletes suffering ankle injuries and improve players' feet performance. This study aims to evaluate the influence of shoe torsional stiffness on running velocity, stance duration, ground reaction forces and ankle biomechanics during two different tennis forehand runs and strokes. Ten right-handed advanced male tennis players performed two specific tennis forehand runs and strokes at maximal effort (a shuttle run with a defensive open stance forehand - SRDF and a lateral jab run with an offensive open stance forehand - JROF) with four different pairs of tennis shoes with different torsional stiffness. A force platform measured ground reaction forces (GRF). A motion capture system recorded the 3D trajectories of markers located on players' anatomical landmarks. The minimum, maximum angle value, and range of motion were computed using inverse kinematics for each rotation axis of the right ankle. Normalised maximal ankle torques were also computed using inverse dynamics. Shoe torsional stiffness had no effect on running velocity, on stance duration and maximal values of GRF. Shoe torsional stiffness influenced forefoot inversion which was significantly higher for the most flexible shoes. For SRDF, the maximal ankle inversion angle was significantly and largely increased for the stiffest shoe. The stiffest shoe may put the ankle at a higher risk of lateral sprains during SRDF while it was not the case during JROF.
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Affiliation(s)
- Caroline Martin
- M2S Laboratory, Rennes 2 University, École Normale Supérieure de Rennes, Campus de Ker Lann, Bruz, France
| | - Pierre Touzard
- M2S Laboratory, Rennes 2 University, École Normale Supérieure de Rennes, Campus de Ker Lann, Bruz, France
| | - Nicolas Horvais
- Sport Sciences Laboratory, Wilson Footwear Department, Salomon SAS, Épagny Metz-Tessy, France
| | - Pierre Puchaud
- M2S Laboratory, Rennes 2 University, École Normale Supérieure de Rennes, Campus de Ker Lann, Bruz, France.,Centre de Recherche des Ecoles de St-Cyr Coëtquidan, Guer, France.,Univ RennesInria, Rennes, France
| | - Richard Kulpa
- M2S Laboratory, Rennes 2 University, École Normale Supérieure de Rennes, Campus de Ker Lann, Bruz, France.,Univ RennesInria, Rennes, France
| | - Benoit Bideau
- M2S Laboratory, Rennes 2 University, École Normale Supérieure de Rennes, Campus de Ker Lann, Bruz, France.,Univ RennesInria, Rennes, France
| | - Anthony Sorel
- M2S Laboratory, Rennes 2 University, École Normale Supérieure de Rennes, Campus de Ker Lann, Bruz, France.,Univ RennesInria, Rennes, France
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Gądek-Moszczak A, Radek N, Pliszka I, Augustyn-Nadzieja J, Orman ŁJ. Nano X-ray Tomography Application for Quantitative Surface Layer Geometry Analysis after Laser Beam Modification. Materials (Basel) 2022; 15:5935. [PMID: 36079316 PMCID: PMC9457490 DOI: 10.3390/ma15175935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/20/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Analysis of the geometrical structure of the surface of materials is an issue already widely recognised and included in international standards. The authors present the possibilities of extending the analysis of the coatings' geometrical structure through X-ray nanotomography imaging, three-dimensional image processing, and stereological methods. Analysis of the state of the art reveals that there are no scientific rapports (indexed by Scopus) on the application X-ray nanotomography for analysis of the geometry of a coating. The presented study shows that this imaging technique can be applied and provide additional information on the quality of the layer. The comparative tests were carried out on samples with a cermet coating before and after laser treatment, including standard tests of the surface geometry and the analysis of three-dimensional images obtained from nanotomography. A set of parameters describing the compactness and thickness distribution of the applied coating is proposed, which facilitates the qualitative assessment of the application process and improvements through the additional processing of technological layers. The obtained results show that although the average thickness values before and after laser treatment did not differ significantly, their distribution on the sample surface was different, as presented in the visualisation. The determined stereological parameter NV (number of objects per unit volume) allowed for the assessment of the layer compactness, and as the analyses showed, this value decreased by more than two times after laser treatment. The analysis of the degree of sample coverage by the cermet layer showed that it increased from 70% to 95% after laser treatment, which confirms the treatment's positive effect on the layer's quality. This research shows that three-dimensional analysis significantly enriches the information about the geometry of the surface layer, providing data which other research techniques are unable to acquire.
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Affiliation(s)
- Aneta Gądek-Moszczak
- Faculty of Mechanical Engineering, Cracow University of Technology, Al. Jana Pawła II 37, 31-864 Cracow, Poland
| | - Norbert Radek
- Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Al. 1000-lecia P.P. 7, 25-314 Kielce, Poland
| | - Izabela Pliszka
- Faculty of Management and Computer Modelling, Kielce University of Technology, Al. 1000-lecia P.P. 7, 25-314 Kielce, Poland
| | - Joanna Augustyn-Nadzieja
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science & Technology, 30 Mickiewicz Avenue, 30-059 Cracow, Poland
| | - Łukasz J. Orman
- Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, Al. 1000-lecia P.P. 7, 25-314 Kielce, Poland
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30
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Ogura K, Kobayashi Y, Hikita R, Tsuji M, Moriyama K. Three-dimensional analysis of the palatal morphology in growing patients with Apert syndrome and Crouzon syndrome. Congenit Anom (Kyoto) 2022; 62:153-160. [PMID: 35468239 DOI: 10.1111/cga.12470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 12/17/2021] [Accepted: 01/06/2022] [Indexed: 11/28/2022]
Abstract
Patients with Apert syndrome or Crouzon syndrome present with severe defects in oral-maxillofacial growth and development. In this study, we conducted a quantitative three-dimensional (3D) analysis of the palatal morphology of patients with Apert syndrome and Crouzon syndrome. Four patients with Apert syndrome (average age, 11.0 ± 0.8 years) and five with Crouzon syndrome (average age, 10.1 ± 1.6 years) were investigated. The participants' maxillary dental casts were scanned and analyzed using 3D imaging. Palatal width, depth, cross-sectional area, and palatal angle (PW, PD, PCA, and PA, respectively) were measured, and standard scores were calculated based on sex- and age-matched Japanese standard values; the actual palatal surface areas (PSA) and palatal volumes (PV) were also measured. Our results show that patients with Apert syndrome and Crouzon syndrome had a very narrow PW (standard score: -3.79 and - 0.47, respectively). 3D analysis revealed that patients with Apert syndrome had a significantly shallower PD (standard score: -1.35) than those with Crouzon syndrome (standard score: 2.47), resulting in a smaller PCA (standard score: -5.13), PSA (5.49 cm2 ), and PV (1.11 cm3 ) and larger PA (standard score: -0.12) than those in patients with Crouzon syndrome. This might be due to the former having a narrower and shallower palate caused by the predominant swelling of the palatal mucosa. These findings improve our understanding of the differences in palatal morphology between Apert syndrome and Crouzon syndrome patients.
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Affiliation(s)
- Kenji Ogura
- Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Orthognathics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yukiho Kobayashi
- Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Orthognathics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Rina Hikita
- Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Orthognathics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Michiko Tsuji
- Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Orthognathics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Keiji Moriyama
- Division of Maxillofacial and Neck Reconstruction, Department of Maxillofacial Orthognathics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Severin AC, Danielsen J. Rotation sequence and marker tracking method affects the humerothoracic kinematics of manual wheelchair propulsion. J Biomech 2022; 141:111212. [PMID: 35780696 DOI: 10.1016/j.jbiomech.2022.111212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 11/21/2022]
Abstract
The literature on shoulder (humerothoracic) kinematics in manual wheelchair propulsion is growing. Inconsistencies in the reporting of which rotation sequence is used to compute three-dimensional (3D) angles complicates the interpretation and comparison between studies. The purpose of this study was to compare the effects of three often used and recommended rotation sequences (ZXY, XZY, and YXY) and two tracking methods (anatomical and cluster only) on the humerothoracic kinematics of manual wheelchair propulsion. Fourteen able-bodied participants performed manual wheelchair propulsion on a treadmill, while a motion capture system recorded the movements at 120 Hz. Humeral and thoracic segment coordinate systems were constructed according to ISB recommendations. Humerothoracic angles were calculated using each of the three rotation sequences. The ZXY and XZY sequences yielded similar angles in terms of both shape and amplitude, but, perhaps unsurprisingly, these differed substantially from the YXY sequence. Anatomical tracking showed neither gimbal locks nor phase angle discontinuities for any rotation sequence, while cluster tracking yielded phase angle discontinuities for the ZXY and YXY rotation sequences. The two tracking methods yielded similar joint angles for all sequences except for internal/external rotation, and the cluster-only method had larger variability than the anatomical method. These results highlight the importance of reporting which rotation sequence and tracking method are used when calculating humerothoracic angles in order to allow for straightforward interpretation of results and comparison across studies.
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Cimavilla-Román P, Pérez-Tamarit S, Barroso-Solares S, Pinto J, Rodríguez-Pérez MÁ. Sub-pixel Tomographic Methods for Characterizing the Solid Architecture of Foams. Microsc Microanal 2022; 28:1-12. [PMID: 35300749 DOI: 10.1017/s1431927622000447] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Three independent analysis methods were developed to investigate the distribution of solid mass in foams analyzed by X-ray tomography with effective pixel sizes larger than the thickness of the solid network (sub-pixel conditions). Validation of the methods was achieved by a comparison with the results obtained employing high-resolution tomography for the same set of foams. The foams showed different solid mass distribution, which varied from being preferentially located on the edges, with a fraction of mass in the struts nearing 0.6, to materials in which the fraction of mass in the struts was low, under 0.15. In all cases, the accuracy of the proposed approaches was greater for materials with a higher fraction of mass in the struts. The method based on deconvolution of the attenuation probability density function yielded the closest results to the high-resolution characterizations. In contrast, analysis of the solid matrix thickness distribution after watershed segmentation, and binarization of high thickness regions (struts segmentation) required normalization through macroscopic measurements and revealed higher deviations with respect to the high-resolution results. However, segmentation-based methods allowed investigation of the heterogeneity of the fraction of mass in the struts along the sample.
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Affiliation(s)
- Paula Cimavilla-Román
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, Paseo Belen 7, Valladolid47011, Spain
| | - Saúl Pérez-Tamarit
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, Paseo Belen 7, Valladolid47011, Spain
| | - Suset Barroso-Solares
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, Paseo Belen 7, Valladolid47011, Spain
- BioEcoUva, Research Institute on Bioeconomy, University of Valladolid, Valladolid, Spain
| | - Javier Pinto
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, Paseo Belen 7, Valladolid47011, Spain
- BioEcoUva, Research Institute on Bioeconomy, University of Valladolid, Valladolid, Spain
| | - Miguel Ángel Rodríguez-Pérez
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, Paseo Belen 7, Valladolid47011, Spain
- BioEcoUva, Research Institute on Bioeconomy, University of Valladolid, Valladolid, Spain
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Comisso M, Buttazzoni G, Pastore S, Vatta F, Babich F. 3D Poisson-Based Neighborhood Capacity Analysis for Millimeter Wave Communications. Sensors (Basel) 2022; 22:2098. [PMID: 35336267 DOI: 10.3390/s22062098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 02/04/2023]
Abstract
This paper proposes a theoretical model for evaluating the capacity of a millimeter wave (mmWave) source destination link when the nodes are distributed according to a three-dimensional (3D) homogeneous Poisson point process. In the presented analysis, different from the existing approaches, the destination lies in an arbitrary location with respect to the source; thus, the link performance can be evaluated for a neighbor of any order. Moreover, the developed model relies on a realistic propagation environment, characterized by path loss attenuation and shadowing in line of sight (LoS), non-LoS, and outage link state conditions. The derived formulas, which are calculated in closed-form and validated by independent Monte Carlo simulations, are used to investigate the influence of the intensity parameter, of the antenna gain, and of the mmWave frequency band on the link capacity for any possible neighbor in a practical 3D scenario.
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Öztürk M, Paulin E, Charbonnier C, Dupuis-Lozeron E, Holzer N. Three-dimensional reconstruction and virtual reposition of fragments compared to two dimensional measurements of midshaft clavicle fracture shortening. BMC Musculoskelet Disord 2022; 23:216. [PMID: 35255891 PMCID: PMC8903646 DOI: 10.1186/s12891-022-05173-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 02/28/2022] [Indexed: 12/02/2022] Open
Abstract
Background Midshaft clavicle fracture shortening measurement is a reported key element for indication to surgical management and reporting of clinical trials. Determination of pre-fracture clavicle length for shortening measurement remains an unresolved issue. The purpose of the study was to assess accuracy of a novel technique of three-dimensional reconstruction and virtual reposition of bone fragments (3D-VR) for determination of pre-fracture clavicle length and measurement of shortening. Methods Accuracy of 3D-VR measurements was assessed using 5 synthetic bone clavicle fracture models. Measurements were compared between caliper and 3D-VR technique measurements. Correlation between 3D-VR and 2D measurements on standard radiographs was assessed on a cohort of 20 midshaft fractures. Four different methods for 2D measurements were assessed. Results Mean difference between caliper measurements and 3D-VR was 0.74 mm (95CI = − 2.51;3.98) (p = 0.56) on synthetic fracture models. Mean differences between 3D-VR and standard radiograph shortening measurement methods were 11.95 mm (95CI = 7.44;16.46) for method 1 (Jeray et al.) and 9.28 mm (95CI = 4.77;13.79) for method 2 (Smekal et al.) (p < 0.05). Differences were − 1.02 mm (95CI = − 5.53;3.48) for method 3 (Silva et al.) and − 2.04 mm (95CI = − 6.55;2.47) for method 4 (own method). Interobserver correlation ranged between 0.85 and 0.99. A false positive threshold of 20 mm was measured by the two observers in 25% of the case according to method of method 1, 30–35% with method 2, 15% with method 3 et al. and 5–10% with the method 4. Conclusion 3D VR is accurate in measuring midshaft clavicle fracture length and shortening. Two dimensional measurements may be used for approximation of clavicular shortening.
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Affiliation(s)
- Mehmet Öztürk
- Division of Orthopedic and Trauma Surgery, Geneva University Hospital, Geneva, Switzerland.
| | - Emilie Paulin
- Department of Radiology, Geneva University Hospital, Geneva, Switzerland
| | | | - Elise Dupuis-Lozeron
- Department of Clinical Epidemiology, Geneva University Hospital, Geneva, Switzerland
| | - Nicolas Holzer
- Division of Orthopedic and Trauma Surgery, Geneva University Hospital, Geneva, Switzerland
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Cappella A, Affatato L, Gibelli D, Mazzarelli D, Zago M, Dolci C, Sforza C, Cattaneo C. An osteometric and 3D analysis of the atlanto-occipital joint: An initial screening method to exclude crania and atlases in commingled remains. Am J Biol Anthropol 2022; 177:439-453. [PMID: 36787652 PMCID: PMC9299177 DOI: 10.1002/ajpa.24437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 10/04/2021] [Accepted: 10/13/2021] [Indexed: 05/07/2023]
Abstract
OBJECTIVES The anatomical features of the atlanto-occipital joint can be potentially useful in re-associating or excluding crania to atlases in commingled remains. This study investigated whether linear measurements and the 3-dimensional (3D) surface of occipital condyles and articular facets of atlases can represent valid insights for this purpose. METHODS The variations among eight corresponding linear distances were analyzed in a sample of 150 individuals through six supervised machine learning techniques attempting to develop classifiers able to identify elements belonging to the same individual. Furthermore, a 3D analysis was conducted on the articular surfaces through superimpositions of 3D models of corresponding and non-corresponding crania and atlases obtained by using respectively stereophotogrammetry and laser scanning. This analysis investigated differences in terms of point-to-point distances (Root Mean Square, RMS) of superimposed 3D surfaces. RESULTS None of the six machine learning techniques were able to correctly detect a satisfying percentage of correspondent pairs in the overall sample by using the linear variables. The 3D analysis of the articular surfaces found RMS values over 0.53 mm only for superimposed non-corresponding surfaces, which sets a threshold value to identify 32% of incorrect pairs. DISCUSSION The re-association of cranium to atlas proved to be challenging and hardly possible when considering only metric variables. However, the 3D geometry of the articular surfaces represents a valid variable for this purpose and 3D analyses pave the way for an initial exclusion of incorrect re-associations, thus should not be considered as a re-association method per se, but as an exclusionary screening technique.
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Affiliation(s)
- Annalisa Cappella
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilan
- U.O. Laboratorio di Morfologia Umana ApplicataIRCCS Policlinico San DonatoSan Donato MilaneseMI
| | - Luciana Affatato
- Laboratorio di Antropologia e Odontologia Forense, Sezione Medicina Legale, Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilanItaly
| | - Daniele Gibelli
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilan
| | - Debora Mazzarelli
- Laboratorio di Antropologia e Odontologia Forense, Sezione Medicina Legale, Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilanItaly
| | - Matteo Zago
- Dipartimento di meccanicaPolitecnico di MilanoMilanItaly
| | - Claudia Dolci
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilan
| | - Chiarella Sforza
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilan
| | - Cristina Cattaneo
- Laboratorio di Antropologia e Odontologia Forense, Sezione Medicina Legale, Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilanItaly
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Wada K, Kawano M, Hemmi Y, Suzuki R, Kunoki K, Sakagami H, Kawazu H, Yokose S. Effect of Low-intensity Pulsed Ultrasound on Healing of Bone Defects in Rat Tibia as Measured by Reconstructed Three-dimensional Analysis of Micro CT Images. In Vivo 2022; 36:643-648. [PMID: 35241517 DOI: 10.21873/invivo.12748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/02/2022] [Accepted: 01/03/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM The aim of this study was to evaluate the effect of low-intensity pulsed ultrasound (LIPUS) on bone metabolism during the healing period in rat tibiae bone defects using micro-computed tomography (micro CT) imaging for three-dimensional morphological evaluation. MATERIALS AND METHODS The right tibia received ultrasound exposure (US group) every day, whereas the opposite side served as a control (Control group). At 1, 2, and 3 weeks after the operation, micro CT was performed, and the volume and surface area of new bone formation in the bone defects was evaluated three-dimensionally. RESULTS Bone volume (BV) and bone surface (BS) in the tibiae of both the US and Control groups demonstrated the highest values 1 week after the operation, with no significant differences between the groups. At 2 weeks after the operation, the BV and BS values in both groups had decreased, but the decrease was smaller in the US group than the Control group. At 3 weeks after the operation, the BV and BS values in the Control group were significantly lower than those in the US group. CONCLUSION LIPUS stimulation can prevent bone loss during the healing of bone defects.
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Affiliation(s)
- Kei Wada
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, Saitama, Japan
| | - Munemitsu Kawano
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, Saitama, Japan
| | - Yuichi Hemmi
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, Saitama, Japan
| | - Reiji Suzuki
- Division of Oral Rehabilitation, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, Saitama, Japan
| | - Katsunori Kunoki
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, Saitama, Japan
| | - Hiroshi Sakagami
- Meikai University Research Institute of Odontology (M-RIO), Saitama, Japan
| | - Hiroshi Kawazu
- Section of Continuous Education, School of Dentistry, Meikai University, Saitama, Japan
| | - Satoshi Yokose
- Division of Endodontics and Operative Dentistry, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, Saitama, Japan;
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Tkacz MA, Chromiński K, Idziak-Helmcke D, Robaszkiewicz E. Novel visual analytics approach for chromosome territory analysis. PeerJ 2022; 9:e12661. [PMID: 35003937 PMCID: PMC8686757 DOI: 10.7717/peerj.12661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 11/30/2021] [Indexed: 11/20/2022] Open
Abstract
This document presents a new and improved, more intuitive version of a novel method for visually representing the location of objects relative to each other in 3D. The motivation and inspiration for developing this new method came from the necessity for objective chromosome territory (CT) adjacency analysis. The earlier version, Distance Profile Chart (DPC), used octants for 3D orientation. This approach did not provide the best 3D space coverage since space was divided into just eight cones and was not intuitive with regard to orientation in 3D. However, the version presented in this article, called DPC12, allows users to achieve better space coverage during conification since space is now divided into twelve cones. DPC12 is faster than DPC and allows for a more precise determination of the location of objects in 3D. In this article a short introduction about the conification idea is presented. Then we explain how DPC12 is designed and created. After that, we show DPC12 on an instructional dataset to make it easier to understand and demonstrate how they appear and how to read them. Finally, using DPC12 we present an example of an adjacency analysis (AA) using the model of Chromosome Territories (CTs) distribution in the rice nucleus.
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Affiliation(s)
- Magdalena A Tkacz
- Faculty of Science and Technology, University of Silesia, Sosnowiec, Poland
| | - Kornel Chromiński
- Faculty of Science and Technology, University of Silesia, Sosnowiec, Poland
| | | | - Ewa Robaszkiewicz
- Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
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Gava V, Rosa DP, Pereira ND, Phadke V, Camargo PR. Ratio between 3D glenohumeral and scapulothoracic motions in individuals without shoulder pain. J Electromyogr Kinesiol 2021; 62:102623. [PMID: 34979438 DOI: 10.1016/j.jelekin.2021.102623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 10/19/2022] Open
Abstract
This study determined the ratio between glenohumeral and three-dimensional scapular motion during arm elevation and lowering in 91 individuals without shoulder pain. Scapular kinematics were assessed using an electromagnetic tracking device. Individuals performed 3 repetitions of elevation and lowering of the arm in the sagittal plane. Two-way ANOVAs (interval: 30-60°, 60-90°, 90-120° x phase: elevation and lowering) and paired t-tests were used for data analysis. For scapular internal/external rotation, lesser scapular internal rotation contribution was found during the 60-90° interval as compared to the 90-60° interval. Lesser scapular external rotation was identified in the 60-30° interval of arm lowering. The ratio was greater during arm elevation (1.89) compared to lowering (1.74) across the entire motion arc. For scapular upward rotation, greater upward rotation contribution was observed during arm elevation at the 30-60° interval, and less scapular downward rotation contribution in the final range of arm lowering. For scapular tilt, lesser scapular posterior tilt contribution during arm elevation was observed compared to arm lowering. The ratios between glenohumeral elevation/lowering and each individual scapulothoracic motion showed either differences between intervals and/or between elevation and lowering during specific intervals in healthy individuals.
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Affiliation(s)
- Vander Gava
- Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil
| | - Dayana Patricia Rosa
- Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil
| | - Natalia Duarte Pereira
- Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil
| | - Vandana Phadke
- Department of Clinical Research, Indian Spinal Injuries Center, Vasant Kunj, New Delhi 110070, India
| | - Paula Rezende Camargo
- Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil.
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Yoshino N, Nishii Y, Kamio T, Takaki T, Shibahara T, Sueishi K. Three-Dimensional Evaluation of Pharyngeal Morphology in Bimaxillary Surgery with and without Horseshoe Osteotomy in Skeletal Class III Cases. Bull Tokyo Dent Coll 2021; 62:215-226. [PMID: 34776475 DOI: 10.2209/tdcpublication.2021-0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Repositioning of the jaw in orthognathic treatment generates changes in the soft tissues of the maxillofacial region, with consequent changes in the airway. The purpose of this study was to determine how type of orthognathic surgical procedure affected the 3-dimensional morphology of the upper airway. Forty patients were divided into the following 2 groups according to the type of surgical procedure used: a horseshoe osteotomy (HS) group (20 patients, comprising 11 men and 9 women; average age 24.3±4.5 years) who underwent bimaxillary surgery; and a LeFort I osteotomy (LF) group (20 patients, comprising 8 men and 12 women; average age 22.5±4.6 years) who also underwent bimaxillary surgery. Cephalometric measurements were taken and 3-dimensional pharyngeal morphology evaluated in each group. The amounts of maxilla rotation, posterior maxilla impaction, and mandibular setback all revealed a significantly larger value in the HS group. Evaluation of pharyngeal volume revealed a significant decrease in the upper pharyngeal segment in the LF group. A significant decrease in the lower pharyngeal segment was observed in both groups. Differences were noted in postoperative pharyngeal morphology between the two groups. The results of this study suggest that HS has less effect on the upper pharyngeal segment, regardless of the amount of posterior maxilla impaction.
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Affiliation(s)
| | | | - Takashi Kamio
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College
| | - Takashi Takaki
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College
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Sugi A, Matsuki K, Fukushi R, Shimoto T, Hirose T, Shibayama Y, Nishinaka N, Iba K, Yamashita T, Banks SA. Comparing in vivo three-dimensional shoulder elevation kinematics between standing and supine postures. JSES Int 2021; 5:1001-1007. [PMID: 34766076 PMCID: PMC8568990 DOI: 10.1016/j.jseint.2021.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background It is often assumed that body posture, standing vs. supine, changes shoulder muscle activation and range of motion, but these altered shoulder mechanics have not been objectively assessed. We expected the supine posture might facilitate scapular rotation and change subacromial pressure. The purpose of this study is to evaluate the influence of body posture on shoulder kinematics during arm elevation. Methods Ten males and eight females with a mean age of 33 years participated in this study. Shoulder kinematics were assessed during scapular plane elevation in the standing and supine postures by using single-plane fluoroscopic images. Kinematics were measured using 3-dimensional to 2-dimensional model-image registration techniques: matching the 3-dimensional bone model derived from computed tomography onto each fluoroscopic image. Glenohumeral superior/inferior translation, acromiohumeral distance, and scapular rotations were compared between the postures. The effect of sex also was evaluated. Results With the arm at the side position, the humeral head in the supine posture was located 0.5 mm superior compared to the standing posture (P < .001). During humeral elevation, the humeral head significantly shifted more inferiorly in the supine posture than in standing; the biggest mean difference was 0.6 mm, P = .003. But acromiohumeral distance during elevation was not significantly affected by the body posture (P = .05). Scapular upward rotation and posterior tilt were significantly different between the postures (P < .001). Sex had statistically significant, but quantitatively small, effects on shoulder kinematics. Conclusions Body postures affect shoulder kinematics during humeral elevation. This knowledge will be useful to optimize rehabilitation exercises and for diagnostic insight.
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Affiliation(s)
- Akira Sugi
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA
- Corresponding author: Akira Sugi, MD, Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan.
| | - Keisuke Matsuki
- Funabashi Orthopaedic Sports Medicine & Joint Center, Funabashi, Chiba, Japan
| | - Ryunosuke Fukushi
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Takeshi Shimoto
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA
- Department of Information and System Engineering, Fukuoka Institute of Technology, Fukuoka, Japan
| | | | - Yuji Shibayama
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Naoya Nishinaka
- Department of Orthopaedic Surgery, Showa University Fujigaoka Hospital, Yokohama, Japan
| | - Kousuke Iba
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Toshihiko Yamashita
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Scott A. Banks
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA
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Ferrero E, Skalli W, Khalifé M, Carlier R, Feydy A, Felter A, Guigui P, Lafage V. Volume of spinopelvic muscles: comparison between adult spinal deformity patients and asymptomatic subjects. Spine Deform 2021; 9:1617-24. [PMID: 33909275 DOI: 10.1007/s43390-021-00357-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 04/19/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE Spinal muscles are a major component of posture in spinal pathologies and changes to the spine with aging. Specifically, spinopelvic muscles may compensate for underlying anomalies such as pelvic retroversion, knee flexion, and cervical or thoracic spinal balance abnormalities. To increase understanding between muscular characteristics and compensatory mechanisms, this study aimed to compare the volume of spinopelvic muscles in adults with a spinal deformity (ASD) to a control group of well-aligned adult subjects. METHODS Twenty-eight lumbar ASD patients [Cobb angle > 20°, > 40 years old (yo)] were prospectively included and compared to 35 normal subjects divided into 2 different groups: one group of young (Y) subjects (n = 23, < 20 yo) and one group of old (O) subjects (n = 12, > 40 yo). All subjects had a fat/water separation MRI (from C7 to the knees). Volumetric 3D reconstructions of 30 spinopelvic muscles were performed and muscles volumes were compared. RESULTS Mean age was 60 ± 16 yo, without significant differences between the ASD and O groups (57 ± 11 yo). Age and BMI were smaller in the young group. Mean Cobb angle of the ASD group was 45 ± 11°. Comparing the ASD and O groups, total muscular volume was similar; however, erector spinae (0.24 ± 0.06 vs 0.68 ± 0.08 dm3, p = 0.001), iliopsoas (0.49 ± 0.09 vs 0.60 ± 0.09 dm3, p = 0.001) and obliquus (0.42 ± 0.08 vs 0.50 ± 0.08 dm3, p = 0.02) were significantly smaller in the ASD group. Comparing the Y and the ASD groups, total muscular volume was higher in the Y group than the ASD group (+ 3.3 dm3, p = 0.003) and erector spinae (0.24 ± 0.06 vs 0.74 ± 0.08, p = 0.0001), gluteus medius (0.51 ± 0.07 vs 0.62 ± 0.13, p = 0.01) and vastus lateralis (1.33 ± 0.21 vs 2.08 ± 0.29, p = 0.001) were significantly bigger in the Y group. CONCLUSION This is the first study to compare volume of spinopelvic muscles between ASD patients and a control group without spinal deformity. Our results demonstrate that muscular degeneration has a double origin: aging and deformity. Erector spinae, iliopsoas, and obliquus are the muscles most affected by degeneration.
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Woodsend B, Koufoudaki E, Mossey PA, Lin P. Automatic recognition of landmarks on digital dental models. Comput Biol Med 2021; 137:104819. [PMID: 34507153 DOI: 10.1016/j.compbiomed.2021.104819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 08/09/2021] [Accepted: 08/26/2021] [Indexed: 11/17/2022]
Abstract
Fundamental principle in improving Dental and Orthodontic treatments is the ability to quantitatively assess and cross-compare their outcomes. Such assessments require calculating distances and angles from 3D coordinates of dental landmarks. The costly and repetitive task of hand-labelling dental models hinder studies requiring large sample size to penetrate statistical noise. We have developed techniques and a software implementing these techniques to map out automatically, 3D dental scans. This process is divided into consecutive steps - determining a model's orientation, separating and identifying the individual tooth and finding landmarks on each tooth - described in this paper. The examples to demonstrate the techniques, software and discussions on remaining issues are provided as well. The software is originally designed to automate Modified Huddard Bodemham (MHB) landmarking for assessing cleft lip/palate patients. Currently only MHB landmarks are supported, however it is extendable to any predetermined landmarks. The software, coupled with intra-oral scanning innovation, should supersede the arduous and error prone plaster model and calipers approach to Dental research, and provide a stepping-stone towards automation of routine clinical assessments such as "index of orthodontic treatment need" (IOTN).
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Affiliation(s)
- Brénainn Woodsend
- School of Science and Engineering, University of Dundee, Nethergate, Dundee, DD1 4HN, United Kingdom.
| | - Eirini Koufoudaki
- School of Dentistry, University of Dundee, Nethergate, Dundee, DD1 4HN, United Kingdom.
| | - Peter A Mossey
- School of Dentistry, University of Dundee, Nethergate, Dundee, DD1 4HN, United Kingdom.
| | - Ping Lin
- School of Science and Engineering, University of Dundee, Nethergate, Dundee, DD1 4HN, United Kingdom.
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Huang L, Wang Z, Shan Z, Yeung AWK, Yang Y, Liang Z, Gu M. Nasal asymmetry changes during growth and development in 6- to 12-year-old children with repaired unilateral cleft lip and palate: A 3D computed tomography analysis. J Anat 2021; 240:155-165. [PMID: 34411284 PMCID: PMC8655196 DOI: 10.1111/joa.13538] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 08/05/2021] [Accepted: 08/10/2021] [Indexed: 11/29/2022] Open
Abstract
Repaired unilateral cleft lip and palate (UCLP) is often accompanied by the deformity and asymmetry of the nasal region. Three‐dimensional analysis was performed to investigate the relationship between nasal soft‐ and hard‐tissue asymmetries, as well as the changes in nasal asymmetry with age, among children with repaired UCLP (age: 6–12 years). Forty‐seven patients were included in this study. Their computed tomography records were retrieved for analysis of the 3D asymmetry of 10 landmarks of the nasal soft and hard tissues. We observed that asymmetry was more severe in nasal hard tissues than in soft tissues, particularly in the sagittal dimension. Compared with patients aged 6–9 years old, patients aged 10 to 12 years old had significantly increased vertical asymmetry at the base of the alar groove (Gbase, p = 0.027) and the lateral point of the piriform aperture (LPA), (p < 0.001). The correlation between the LPA and the alar region was weak to moderate (r = 0.290 to 0.488). In conclusion, we found no evidence of growth and development in nasal hard‐tissue asymmetry among 6‐ to 12‐year‐old children with repaired UCLP, except for the vertical dimension. Nasal soft tissue exhibited a more preferable symmetry than hard tissue, and this could be attributed to the compensatory growth of nasal soft tissue, particularly in the vertical and sagittal dimensions. The weak to moderate correlations between nasal soft‐tissue asymmetry and hard‐tissue asymmetry were observed in the three dimensions. Surgeons should consider these factors when repositioning the nasal alar and controlling the size of the nostrils.
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Affiliation(s)
- Le Huang
- Department of Stomatology, Shenzhen Luohu Hospital Group Luohu People's Hospital, Guangdong, P.R. China.,Department of Stomatology, Shenzhen Second People's Hospital, Guangdong, P.R. China
| | - Ziling Wang
- Faculty of Dentistry, The University of Hong Kong, Hong Kong S.A.R., China
| | - Zhiyi Shan
- Orthodontics, Division of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong S.A.R., China
| | - Andy Wai Kan Yeung
- Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong S.A.R., China
| | - Yanqi Yang
- Orthodontics, Division of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong S.A.R., China
| | - Zhigang Liang
- Department of Stomatology, Shenzhen Second People's Hospital, Guangdong, P.R. China
| | - Min Gu
- Orthodontics, Division of Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong S.A.R., China
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Son K, Lee WS, Lee KB. Effect of Different Software Programs on the Accuracy of Dental Scanner Using Three-Dimensional Analysis. Int J Environ Res Public Health 2021; 18:ijerph18168449. [PMID: 34444195 PMCID: PMC8392431 DOI: 10.3390/ijerph18168449] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/06/2021] [Accepted: 08/06/2021] [Indexed: 12/20/2022]
Abstract
This in vitro study aimed to evaluate the 3D analysis for complete arch, half arch, and tooth preparation region by using four analysis software programs. The CAD reference model (CRM; N = 1 per region) and CAD test models (CTMs; N = 20 per software) of complete arch, half arch, and tooth preparation were obtained by using scanners. For both CRM and CTMs, mesh data other than the same area were deleted. For 3D analysis, four analysis software programs (Geomagic control X, GOM Inspect, Cloudcompare, and Materialise 3-matic) were used in the alignment of CRM and CTMs as well as in the 3D comparison. Root mean square (RMS) was regarded as the result of the 3D comparison. One-way analysis of variance and Tukey honestly significant difference tests were performed for statistical comparison of four analysis software programs (α = 0.05). In half-arch and tooth preparation region, the four analysis software programs showed a significant difference in RMS values (p < 0.001), but in complete-arch region, no significant difference was found among the four software programs (p = 0.139). As the area of the virtual cast for 3D analysis becomes smaller, variable results are obtained depending on the software program used, and the difference in results among software programs are not considered in the 3D analysis for complete-arch region.
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Affiliation(s)
- Keunbada Son
- Department of Dental Science, Graduate School, Kyungpook National University, Daegu 41940, Korea;
- Advanced Dental Device Development Institute (A3DI), Kyungpook National University, Daegu 41940, Korea
| | - Wan-Sun Lee
- Department of Dental Technology, Busan Institute of Science and Technology, 88 Srang-ro, 132 Beon-gil, Buk-gu, Busan 616-737, Korea;
| | - Kyu-Bok Lee
- Advanced Dental Device Development Institute (A3DI), Kyungpook National University, Daegu 41940, Korea
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu 41940, Korea
- Correspondence: ; Tel.: +82-053-600-7674
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Abellán R, Gómez C, Palma JC. Effects of Photobiomodulation on the Upper First Molar Intrusion Movement Using Mini-Screws Anchorage: A Randomized Controlled Trial. Photobiomodul Photomed Laser Surg 2021; 39:518-527. [PMID: 34328794 DOI: 10.1089/photob.2020.4979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Objective: The aim of this study was to quantify the changes obtained when the molar intrusion movement is complemented by photobiomodulation (PBM). Background: A common problem in adult patients is the super-eruption of maxillary molars caused by the loss of the antagonist tooth. Super-erupted molars impair oral rehabilitation and can cause both occlusal and functional problems. There is increasing research confirming the benefits of adjunctive PBM during orthodontic treatment. Methods: Twenty patients with indication of a maxillary first molar intrusion for oral rehabilitation were selected. Patients were randomized into two groups to receive orthodontic intrusion (control group) or the same treatment complemented by PBM (PBM group) in repeated doses (days 0, 1, 2, 3, 4, and 7 from the start of the intrusion and in each monthly follow-up) by using a low-power red laser diode (670 nm, 150 mW, 12 min around the molar). Plaque index (PI), probing depth (PD), and bleeding of probing (BOP) were assessed at 0, 1, 2, 3, and 6 months. Stereolithography models generated from an intraoral scanner were taken at 0, 3, and 6 months and cone beam computed tomography (CBCT) records were taken at 0 and 6 months. Mean intrusion distance, mean intrusion velocity, and volumetric resorption were calculated. Results: Periodontal clinical assessments (PI, PD, and BOP) and mean intrusion distance or mean intrusion velocity yielded no differences (p > 0.05) between groups. However, PBM group showed lower values of all these scores during the first 3 months. Intraoral scanner and CBCT were equally effective in accurately monitoring the intrusion distance (p > 0.05). CBCT records allowed volumetric evaluation of the root resorption process, being lesser in the PBM group, but not significantly (p > 0.05). Conclusions: During orthodontic intrusion process, the adjunctive application of PBM may provide better periodontal records and lower progression of root resorption at the expense of a little lower intrusion distance and velocity.
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Affiliation(s)
- Rosa Abellán
- Section of Orthodontics, School of Dentistry, Complutense University of Madrid, Madrid, Spain
| | - Clara Gómez
- Department of Low Dimensional Systems, Surfaces and Condensed Matter, Institute of Physical Chemistry Rocasolano, Spanish National Research Council, CSIC, Madrid, Spain
| | - Juan Carlos Palma
- Section of Orthodontics, School of Dentistry, Complutense University of Madrid, Madrid, Spain
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Abstract
The ovary is an indispensable unit of female reproduction and health. However, the study of ovarian function in mammals is hindered by unique challenges, which include the desynchronized development of oocytes, irregular distribution and vast size discrepancy of follicles, and dynamic tissue remodeling during each hormonal cycle. Overcoming the limitations of traditional histology, recent advances in optical tissue clearing and three-dimensional (3D) visualization offer an advanced platform to explore the architecture of intact organs at a single cell level and reveal new relationships and levels of organization. Here we summarize the development and function of ovarian compartments that have been delineated by conventional two-dimensional (2D) methods and the limits of what can be learned by these approaches. We compare types of optical tissue clearing, 3D analysis technologies, and their application to the mammalian ovary. We discuss how 3D modeling of the ovary has extended our knowledge and propose future directions to unravel ovarian structure toward therapeutic applications for ovarian disease and extending female reproductive lifespan.
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Affiliation(s)
| | - Diana J. Laird
- Department of Obstetrics, Gynecology & Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, United States
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Quílez-Maimón A, Rojas-Ruiz FJ, Delgado-García G, Courel-Ibáñez J. The Q-Pass Index: A Multifactorial IMUs-Based Tool to Assess Passing Skills in Basketball. Sensors (Basel) 2021; 21:s21134601. [PMID: 34283154 PMCID: PMC8271510 DOI: 10.3390/s21134601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 11/30/2022]
Abstract
Despite being a key sport-specific characteristic in performance, there is no practical tool to assess the quality of the pass in basketball. The aim of this study is to develop a tool (the quality-pass index or Q-Pass) able to deliver a quantitative, practical measure of passing skills quality based on a combination of accuracy, execution time and pass pattern variability. Temporal, kinematics and performance parameters were analysed in five different types of passes (chest, bounce, crossover, between-the-leg and behind-the-back) using a field-based test, video cameras and body-worn inertial sensors (IMUs). Data from pass accuracy, time and angular velocity were collected and processed in a custom-built excel spreadsheet. The Q-pass index (0–100 score) resulted from the sum of the three factors. Data were collected from 16 young basketball players (age: 16 ± 2 years) with high (experienced) and low (novice) level of expertise. Reliability analyses found the Q-pass index as a reliable tool in both novice (CV from 4.3 to 9.3%) and experienced players (CV from 2.8 to 10.2%). Besides, important differences in the Q-pass index were found between players’ level (p < 0.05), with the experienced showing better scores in all passing situations: behind-the-back (ES = 1.91), bounce (ES = 0.82), between-the-legs (ES = 1.11), crossover (ES = 0.58) and chest (ES = 0.94). According to these findings, the Q-pass index was sensitive enough to identify the differences in passing skills between young players with different levels of expertise, providing a numbering score for each pass executed.
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Affiliation(s)
- Arturo Quílez-Maimón
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain; (A.Q.-M.); (F.J.R.-R.); (G.D.-G.)
| | - Francisco Javier Rojas-Ruiz
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain; (A.Q.-M.); (F.J.R.-R.); (G.D.-G.)
| | - Gabriel Delgado-García
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain; (A.Q.-M.); (F.J.R.-R.); (G.D.-G.)
| | - Javier Courel-Ibáñez
- Department of Physical Activity and Sport, Faculty of Sport Sciences, University of Murcia, 30720 Murcia, Spain
- Correspondence:
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Lumer L, Wurzel P, Scharf S, Schäfer H, Ackermann J, Koch I, Hansmann ML. 3D connectomes of reactive and neoplastic CD30 positive lymphoid cells and surrounding cell types. Acta Histochem 2021; 123:151750. [PMID: 34233254 DOI: 10.1016/j.acthis.2021.151750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/25/2021] [Accepted: 06/29/2021] [Indexed: 10/20/2022]
Abstract
Classical Hodgkin lymphoma (cHL) is one of the most common malignant lymphomas in Western Europe. It is diagnosed on the basis of histological sections by pathologists using a light microscope. The tumor cells, the Hodgkin- and Reed Sternberg cells (HRS), are visualized by morphology and positive response for the CD30-antigen. The same antigen can also be detected by immunohistochemistry on a reactive counterpart, showing CD30+ cells in special immunoreactions, such as inflammations of lymph nodes (lymphadenitis). CD30+ cells in reactive and neoplastic conditions are surrounded by lymphocytes and histiocytes, forming a micromilieu that enables the survival of the tumor cells, as well as their reactive counterparts. This study deals with an investigation of CD30+-surrounding cells using a confocal laser technology, visualizing the contacts of reactive and neoplastic CD30+ cells with CD68+ macrophages and CD163+ macrophages as well as to PD1+ lymphocytes and B cells (CD20+). CD4 immunostains were not included, because CD4+ cells were too numerous for clear dissection of single cells. 3D images visualized the, so-called, connectomes. Clear differences in the number of contacts between CD30-reactive and neoplastic cells (HRS) with macrophages and B lymphocytes were visible. Lymphadenitis and Mixed Cellularity type of classical Hodgkin Lymphoma (cHL) differed in that Mixed Cellularity (MC) cHL had more connections to macrophages (CD163+) and lower number of connections to B cells (CD20+). The connectomes of both Hodgkin variants MCcHL and Nodular Sclerosis cHL (NScHL) mainly differed in the number of contacts to CD163+ macrophages, which was higher in MCcHL. Investigating the volumes of CD30+ -reactive and neoplastic cells, we found out that reactive cells showed lesser volumes, which correlated with the number of contacts. The comparison between 2D and 3D images, including 3D prints, demonstrated clear advantages of the 3D method. 3D images visualized significantly more and clearly defined intercellular contacts. Complicated cellular networks and their contacts became especially evident in volume and surface evaluations, as well as in 3D prints.
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Horng A, Stroebel J, Geith T, Milz S, Pacureanu A, Yang Y, Cloetens P, Lovric G, Mittone A, Bravin A, Coan P. Multiscale X-ray phase contrast imaging of human cartilage for investigating osteoarthritis formation. J Biomed Sci 2021; 28:42. [PMID: 34098949 PMCID: PMC8182937 DOI: 10.1186/s12929-021-00739-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 06/01/2021] [Indexed: 12/14/2022] Open
Abstract
Background The evolution of cartilage degeneration is still not fully understood, partly due to its thinness, low radio-opacity and therefore lack of adequately resolving imaging techniques. X-ray phase-contrast imaging (X-PCI) offers increased sensitivity with respect to standard radiography and CT allowing an enhanced visibility of adjoining, low density structures with an almost histological image resolution. This study examined the feasibility of X-PCI for high-resolution (sub-) micrometer analysis of different stages in tissue degeneration of human cartilage samples and compare it to histology and transmission electron microscopy. Methods Ten 10%-formalin preserved healthy and moderately degenerated osteochondral samples, post-mortem extracted from human knee joints, were examined using four different X-PCI tomographic set-ups using synchrotron radiation the European Synchrotron Radiation Facility (France) and the Swiss Light Source (Switzerland). Volumetric datasets were acquired with voxel sizes between 0.7 × 0.7 × 0.7 and 0.1 × 0.1 × 0.1 µm3. Data were reconstructed by a filtered back-projection algorithm, post-processed by ImageJ, the WEKA machine learning pixel classification tool and VGStudio max. For correlation, osteochondral samples were processed for histology and transmission electron microscopy. Results X-PCI provides a three-dimensional visualization of healthy and moderately degenerated cartilage samples down to a (sub-)cellular level with good correlation to histologic and transmission electron microscopy images. X-PCI is able to resolve the three layers and the architectural organization of cartilage including changes in chondrocyte cell morphology, chondrocyte subgroup distribution and (re-)organization as well as its subtle matrix structures. Conclusions X-PCI captures comprehensive cartilage tissue transformation in its environment and might serve as a tissue-preserving, staining-free and volumetric virtual histology tool for examining and chronicling cartilage behavior in basic research/laboratory experiments of cartilage disease evolution.
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Affiliation(s)
- Annie Horng
- Department of Clinical Radiology, Faculty of Medicine, Ludwig-Maximilians-University, Marchioninistr. 15, 81377, Munich, Germany.,RZM - Radiologisches Zentrum Munich-Pasing, Pippinger Str. 25, 81245, Munich, Germany
| | - Johannes Stroebel
- Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-University Munich, Am Coulombwall 1, 85748, Garching, Germany
| | - Tobias Geith
- Department of Interventional Radiology, Klinikum Rechts der Isar of the Technical University of Munich, Munich, Germany
| | - Stefan Milz
- Faculty of Medicine, Anatomische Anstalt, Neuroanatomy, Ludwig Maximilians University, Munich, Germany
| | | | - Yang Yang
- European Synchrotron Radiation Facility, Grenoble, France.,National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Peter Cloetens
- European Synchrotron Radiation Facility, Grenoble, France
| | - Goran Lovric
- Paul Scherrer Institute (Swiss Light Source), Villigen, Switzerland
| | | | - Alberto Bravin
- European Synchrotron Radiation Facility, Grenoble, France
| | - Paola Coan
- Department of Clinical Radiology, Faculty of Medicine, Ludwig-Maximilians-University, Marchioninistr. 15, 81377, Munich, Germany. .,Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-University Munich, Am Coulombwall 1, 85748, Garching, Germany.
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Lo Russo L, Troiano G, Santarelli A, Salamini A, Gallo C, Guida L. Trueness of Intaglio Surface of Milled Digital Dentures Designed from Intraoral Scans. J Prosthodont 2021; 31:210-214. [PMID: 34028902 DOI: 10.1111/jopr.13393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2021] [Indexed: 02/05/2023] Open
Abstract
PURPOSE To asses trueness of the intaglio surface of milled dentures fabricated according to a fully digital protocol starting from intraoral scans in a clinical study by means of 3-dimensional (3D) digital analysis. MATERIALS AND METHODS Ten maxillary and 10 mandibular dentures, designed from intraoral scans and milled in-house, were studied. Intraoral scans were compared with the scans of intaglio surface of milled dentures. To this end, they were aligned, trimmed and used in a metrology software to measure their mean 3D distance, absolute mean deviation, and other parameters. Measured differences for all parameters were statistically investigated. Subgroup analysis for the maxillary and mandibular dentures was performed using independent samples t-test or, in case of non-normal distribution, by means of Mann-Whitney test. RESULTS Using a mean of 24.9 ±2.8 measurement points/mm2 , a mean 3D distance of 0.0006 ±0.007 mm between intraoral scans and the scans of the intaglio surface of milled dentures was measured. The corresponding absolute mean deviation was 0.055 ±0.032 for maxillary dentures and 0.061 ±0.016 for mandibular dentures; such a difference between arches was statistically significant (p = 0.035). CONCLUSIONS Milled dentures fabricated using a fully digital protocol and intraoral scans have accurate intaglio surfaces. It is reasonable to assume that they may achieve an adequate fit.
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Affiliation(s)
- Lucio Lo Russo
- Department of Clinical and Experimental Medicine, School of Dentistry, University of Foggia, Foggia, Italy
| | - Giuseppe Troiano
- Department of Clinical and Experimental Medicine, School of Dentistry, University of Foggia, Foggia, Italy
| | | | | | - Crescenzio Gallo
- Department of Clinical and Experimental Medicine, School of Dentistry, University of Foggia, Foggia, Italy
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