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Park H, Ahn S, Lee BI. Quantitative Assessment of Condylar Remodeling After Open Reduction and Internal Fixation in Mandibular Condylar Head Fractures. J Craniofac Surg 2024:00001665-990000000-01719. [PMID: 38885150 DOI: 10.1097/scs.0000000000010414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 05/21/2024] [Indexed: 06/20/2024] Open
Abstract
Open reduction and internal fixation (OR/IF) and closed treatments are viable options, with OR/IF gaining popularity in mandibular condylar head fracture (CHF). Sufficient research is lacking on long-term condylar morphologic changes. This study quantitatively evaluated the morphologic changes in the condylar head in patients who underwent OR/IF for CHF without the removal of osteosynthesis material. A retrospective study analyzed patients who underwent OR/IF for CHF between November 2010 and August 2022. The transverse/lateral condyle width and condyle height were radiologically analyzed using panoramic and reverse Towne view x-ray images at immediate (T0), short-term (T1), and long-term (T2) postoperative periods. The study involved 29 patients with 32 surgically treated CHF. Long-term condyle height decreased significantly from 18.9±0.8 mm at T0 to 18.1±0.8 mm at T1 (P=0.042), and further to 17.3±0.7 mm at T2 (P=0.034). Transverse width slightly reduced from 18.7±0.7 mm at T0 to 17.9±0.8 mm at T1 (P=0.001) but remained stable from T1 to T2 (17.6±1.0 mm, P=0.756). Following surgery, maximal mouth opening averaged 39.5±6.1 mm, with one case of chin deviation and three cases of joint pain. The condyle undergoes long-term shortening without altering its width. Nevertheless, patients experience favorable functional outcomes, including satisfactory mouth opening and occlusion. In addition, it is advisable not to remove the osteosynthesis material, as the remaining material causes minimal functional impairment and bone resorption.
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Affiliation(s)
- Hojin Park
- Department of Plastic Surgery, Korea University, College of Medicine, Korea University Anam Hospital, Seoul, Korea
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Taghizadeh Delkhoush C, Purzolfi M, Mirmohammadkhani M, Sadollahi H, Tavangar S. The linear intra-articular motions of the temporomandibular joint in individuals with severe forward head posture: A cross-sectional study. Musculoskelet Sci Pract 2024; 70:102908. [PMID: 38246011 DOI: 10.1016/j.msksp.2024.102908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/23/2024]
Abstract
BACKGROUND The cervical vertebrae and the temporomandibular joint (TMJ) may be linked through their common muscles. OBJECTIVES The aim of the present study was to compare the linear intra-articular motions of the TMJ between individuals with the normal craniocervical posture (CCP) and severe forward head posture (FHP). DESIGN Cross-sectional study. METHODS Volunteers (N = 38) were equally assigned to either the severe FHP group or the normal CCP group according to their craniovertebral angle (CVA). The CVA angles greater than 49° were considered as the normal CCP while angles between 44 and 40° were regarded as the severe FHP. The TMJ was imaged at the closed, median, and maximum open positions of the mouth using an ultrasound machine with a 7.5 MHz linear transducer in the sitting position. The best-fitting curve in the contour registration method was employed to measure displacement of the mandibular condyle on the transverse and vertical axes. RESULTS The forward displacement of the mandibular condyle in the severe FHP group was significantly (p-value = 0.037) reduced compared to the normal CCP group at maximum open position of the mouth, while no significant difference was revealed at closed (p-value = 0.937) or median open (p-value = 0.699) positions. The perpendicular displacement of the mandibular condyle exhibited no significant (p-value>0.107) difference between groups at any mouth position. DISCUSSION The current study demonstrated, for the first time, that severe FHP may impact the intra-articular motion of the TMJ. This study presumed that individuals with severe FHP may encounter a force imbalance in the anterior-posterior direction.
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Affiliation(s)
| | - Mahdis Purzolfi
- Department of Physiotherapy, School of Rehabilitation Sciences, Semnan University of Medical Sciences, Semnan, Iran.
| | - Majid Mirmohammadkhani
- Social Determinants of Health Research Center, Semnan University of Medical Sciences, Semnan, Iran.
| | - Hasti Sadollahi
- School of Dentistry, Semnan University of Medical Sciences, Semnan, Iran.
| | - Shiva Tavangar
- Department of Physiotherapy, School of Rehabilitation Sciences, Semnan University of Medical Sciences, Semnan, Iran.
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Mouchoux J, Meyer-Marcotty P, Sojka F, Dechent P, Klenke D, Wiechens B, Quast A. Reliability of landmark identification for analysis of the temporomandibular joint in real-time MRI. Head Face Med 2024; 20:10. [PMID: 38365709 PMCID: PMC10874088 DOI: 10.1186/s13005-024-00411-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/22/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Real-time magnetic resonance imaging (rtMRI) is essential for diagnosing and comprehending temporomandibular joint (TMJ) movements. Current methods for tracking and analysis require manual landmark placement on each acquisition frame. Therefore, our study aimed to assess the inter- and intra-rater reliability of placing cephalometric landmarks in frames from a dynamic real-time TMJ MRI. MATERIAL AND METHODS Four real-time MRIs of the right TMJ were taken during mandibular movement at ten frames per second. Seven dentists identified ten landmarks on two frames (intercuspal position-ICP-and maximum mouth opening-MMO) twice at a two-week interval, yielding 112 tracings. Six typical cephalometric measurements (angles and distances) were derived from these landmarks. The reliabilities of landmarks and measurements were evaluated using distance-based (dbICC), linear mixed effect model intraclass correlation (lmeICC), and standard ICC. RESULTS The average inter-rater reliability for the landmarks stood at 0.92 (dbICC) and 0.93 (lmeICC). The intra-rater reliability scores were 0.97 and 0.98. Over 80% of the landmarks showed an ICC greater than 0.98 (inter-rater) and over 0.99 (intra-rater). The lowest landmark ICC was observed for the orbitale and the oblique ridge of the mandibular ramus. However, the cephalometric angle and distance measurements derived from these landmarks showed only moderate to good reliability, whereas the reliability in the frames with ICP was better than those with MMO. Measurements performed in the ICP frame were more reliable than measurements in the MMO frame. CONCLUSION While dentists reliably localize isolated landmarks in real-time MRIs, the cephalometric measurements derived from them remain inconsistent. The better results in ICP than MMO are probably due to a more familiar jaw position. The higher error rate of the TMJ measurements in MMO could be associated with a lack of training in real-time MRI analysis in dentistry.
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Affiliation(s)
- Jérémy Mouchoux
- Poliklinik Für Kieferorthopädie, Universitätmedizin Göttingen (UMG), Göttingen, Germany.
| | | | - Florian Sojka
- Poliklinik Für Kieferorthopädie, Universitätmedizin Göttingen (UMG), Göttingen, Germany
| | - Peter Dechent
- Institut Für Kognitive Neurologie, Universitätmedizin Göttingen (UMG), Göttingen, Germany
| | - Daniela Klenke
- Poliklinik Für Kieferorthopädie, Universitätmedizin Göttingen (UMG), Göttingen, Germany
| | - Bernhard Wiechens
- Poliklinik Für Kieferorthopädie, Universitätmedizin Göttingen (UMG), Göttingen, Germany
| | - Anja Quast
- Poliklinik Für Kieferorthopädie, Universitätmedizin Göttingen (UMG), Göttingen, Germany
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Woodford SC, Robinson DL, Abduo J, Lee PVS, Ackland DC. Kinematics of the jaw following total temporomandibular joint replacement surgery. J Biomech 2023; 159:111741. [PMID: 37660523 DOI: 10.1016/j.jbiomech.2023.111741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 07/19/2023] [Accepted: 07/24/2023] [Indexed: 09/05/2023]
Abstract
Total temporomandibular joint (TMJ) replacement surgery aims to improve mandibular function, reduce pain and enhance quality of life in patients suffering from end-stage TMJ disorders. Traditional post-operative jaw evaluation is carried out using measurement of maximum interincisal opening distance; however, this can correlate poorly to joint function. The present study aimed to evaluate three-dimensional (3D) jaw motion during border movements and chewing in unilateral total TMJ replacement patients and healthy controls. Motion analysis experiments were performed on six unilateral total TMJ replacement patients and ten age-matched healthy controls. Subject-specific motion tracking plates worn by each participant were registered to CT scans of each participant's skull and mandible to enable anatomical mandibular kinematics measurement using an optoelectronic system. Participants performed 15 repetitions of maximal opening, protrusion, lateral excursions, and chewing cycles. Total TMJ replacement patients had significantly smaller incisal displacements at maximum mouth opening relative to the controls (median difference: 7.1 mm, p = 0.002) and decreased anterior translation of the prosthetic condyle (median difference: 10.5 mm, p = 0.002). When TMJ replacement subjects chewed using their contralateral molars, there was a significant increase in inferior condylar translation of the non-working condyle (median difference: 9.7 mm, p = 0.016). This study found that unilateral total TMJ replacement surgery was associated with mouth opening capacity within the range of healthy individuals, but reduced anterior movement of the prosthetic condyle and restricted protrusion and lateral excursions. The results provide future direction for prosthetic TMJ design to enhance postsurgical implant functionality and improve long-term clinical outcomes for prosthesis recipients.
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Affiliation(s)
- Sarah C Woodford
- Department of Biomedical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Dale L Robinson
- Department of Biomedical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Jaafar Abduo
- Melbourne Dental School, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Peter V S Lee
- Department of Biomedical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
| | - David C Ackland
- Department of Biomedical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia.
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Chen K, Zhang Z, Jiang J, Wang J, Wang J, Sun Y, Xu X, Guo C. Prediction of condylar movement envelope surface based on facial morphology. Heliyon 2023; 9:e17769. [PMID: 37483714 PMCID: PMC10362184 DOI: 10.1016/j.heliyon.2023.e17769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/24/2023] [Accepted: 06/27/2023] [Indexed: 07/25/2023] Open
Abstract
The present study aimed to predict the envelope surfaces from facial morphology. Condylar envelope surfaces for 34 healthy adults were formed and simplified as sagittal section curves. Cephalometric and maximum mandibular moving distances measurement were performed on the participants. There was no statistically significant difference (p = 0.763) between the left and right maximum lateral movements. There was a statistically significant difference in the mandibular body length between the sexes. The envelope surfaces were divided into type 1 with Hp2 ≥ 1/3 Hp1 and type 2 with Hp2 < 1/3 × Hp1. SNA and SNB for type 2 were significantly greater than those for type 1 (p < 0.001). Therefore, the participants were divided into four groups based on gender and envelope surface morphology. The curves could be fitted using the second-order Fourier function (R-square ≥0.95). Six facial parameters were selected and a matrix was used to map facial morphology to the envelope surface. Individual sagittal curves were predicted using the matrix and facial parameters, and the envelope surface was predicted using the curve and the condyle model. Deviation analysis for the predicted envelope surface using the actual envelope as a reference was carried out (root mean square = 0.9970 mm ± 0.2918 mm). This method may lay a foundation for the geometric design of artificial fossa components of temporomandibular joint replacement systems. It may improve prosthesis design without flexible tissue repair and guide the movement of the artificial joint head.
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Affiliation(s)
- Kenan Chen
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Center of 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, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing, PR China
| | - Zhehao Zhang
- State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, PR China
| | - Junqi Jiang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Center of 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, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing, PR China
| | - Junlin Wang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Center of 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, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing, PR China
| | - Jing Wang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Center of 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, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing, PR China
| | - Yuchun Sun
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology, National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory for Dental Materials, Beijing, PR China
| | - Xiangliang Xu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Center of 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, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing, PR China
| | - Chuanbin Guo
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, National Center of 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, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing, PR China
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Shaffer SM, Naze GS. Evaluation and management of temporomandibular disorders. Part 2: an orthopaedic physical therapy update on examination and clinical reasoning. J Man Manip Ther 2023; 31:143-152. [PMID: 36171740 PMCID: PMC10288906 DOI: 10.1080/10669817.2022.2124617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
Temporomandibular (TM) disorders afflict many people globally and, despite the presence of existing peer-reviewed material that assists conservative orthopedic providers, recent advances in knowledge indicate that updated resources are required for students, clinicians, and educators. This two-part series builds off previously published material to present newer supplementary information that can be useful during the evaluation and management processes. Content in Part 1 of this series includes a discussion about the factors that have been shown to contribute to TM disorders, an updated perspective of relevant pain science, a discussion of self-report outcome measures, and various different topics related to the examination of patients with TM disorders. Part 2 addresses information related to the temporomandibular joint disc, joint hypermobility, oral splints, and clinical reasoning. In combination with other available publications, this two-part series provides clinicians an opportunity to improve their delivery of effective and efficient clinical services for people diagnosed with TM disorders.
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Affiliation(s)
- Stephen M. Shaffer
- Department of Rehabilitation Sciences, College of Education, Nursing, and Health Professions, University of Hartford, West Hartford, CT, USA
| | - Garrett S. Naze
- Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, NC, USA
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Scolaro A, Khijmatgar S, Rai PM, Falsarone F, Alicchio F, Mosca A, Greco C, Del Fabbro M, Tartaglia GM. Efficacy of Kinematic Parameters for Assessment of Temporomandibular Joint Function and Disfunction: A Systematic Review and Meta-Analysis. Bioengineering (Basel) 2022; 9:bioengineering9070269. [PMID: 35877320 PMCID: PMC9311583 DOI: 10.3390/bioengineering9070269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/18/2022] [Accepted: 05/24/2022] [Indexed: 11/16/2022] Open
Abstract
The aim of this review was to answer the following PICO question: “Do TMJ kinematic parameters (intervention and comparison) show efficacy for assessment of mandibular function (Outcome) both in asymptomatic and TMD subjects? (Population)”. PubMed, Scopus, Web of Science, Embase, Central databases were searched. The inclusion criteria were (1) performed on human, (2) English only, (3) on healthy, symptomatic or surgically altered TMJ, (4) measured dynamic kinematics of mandible or TMJ (5) with six degrees of freedom. To assess the Risk of Bias, the Joanna Briggs Institute tool for non-randomised clinical studies was employed. A pairwise meta-analysis was carried out using STATA v.17.0 (Stata). The heterogeneity was estimated using the Q value and the inconsistency index. Ninety-two articles were included in qualitative synthesis, nine studies in quantitative synthesis. The condylar inclination was significantly increased in female (effect size 0.03°, 95% CI: −0.06, 0.12, p = 0.00). Maximum mouth opening (MMO) was increased significantly in female population in comparison with males (effect size 0.65 millimetres (0.36, 1.66). Incisor displacement at MMO showed higher values for control groups compared with TMD subjects (overall effect size 0.16 millimetres (−0.37, 0.69). Evidence is still needed, considering the great variety of devices and parameters used for arthrokinematics. The present study suggests standardising outcomes, design, and population of the future studies in order to obtain more reliable and repeatable values.
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Affiliation(s)
- Alessandra Scolaro
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy; (A.S.); (S.K.); (P.M.R.); (M.D.F.)
- Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (F.F.); (F.A.); (A.M.)
| | - Shahnawaz Khijmatgar
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy; (A.S.); (S.K.); (P.M.R.); (M.D.F.)
- Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (F.F.); (F.A.); (A.M.)
| | - Pooja Mali Rai
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy; (A.S.); (S.K.); (P.M.R.); (M.D.F.)
- Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (F.F.); (F.A.); (A.M.)
| | - Francesca Falsarone
- Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (F.F.); (F.A.); (A.M.)
| | - Francesca Alicchio
- Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (F.F.); (F.A.); (A.M.)
| | - Arianna Mosca
- Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (F.F.); (F.A.); (A.M.)
| | - Christian Greco
- Azienda Sanitaria dell’Alto Adige, Merano Hospital, 39100 Bolzano, Italy;
| | - Massimo Del Fabbro
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy; (A.S.); (S.K.); (P.M.R.); (M.D.F.)
- IRCC Orthopaedic Institute Galeazzi, 20161 Milan, Italy
| | - Gianluca Martino Tartaglia
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy; (A.S.); (S.K.); (P.M.R.); (M.D.F.)
- Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (F.F.); (F.A.); (A.M.)
- Correspondence:
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Shu J, Ma H, Liu Y, Zheng T, Shao B, Liu Z. In vivo biomechanical effects of maximal mouth opening on the temporomandibular joints and their relationship to morphology and kinematics. J Biomech 2022; 141:111175. [PMID: 35714380 DOI: 10.1016/j.jbiomech.2022.111175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/19/2022] [Accepted: 06/04/2022] [Indexed: 02/05/2023]
Abstract
The temporomandibular joints (TMJs) are the only joints in the human skull and regulate all mandibular motions. The functions of TMJs are considerably influenced by their biomechanical surroundings. However, owing to the unique characteristics of TMJs, comprehending their kinematic and biomechanical mechanisms remains challenging. As a result, understanding how biomechanics relate to TMJ structures and motions is critical in subsequent therapies. The goal of this study is to investigate any links between morphological or kinematic factors and discal stresses during mouth opening. Our study included eight asymptomatic participants who did not show any signs or symptoms of temporomandibular disorders. The morphological parameters, kinematic properties, and stresses were determined using computed tomography (CT), magnetic resonance imaging (MRI), and subject-specific movements. Following the investigation, we discovered that the opening of the mouth was not the primary cause of TMJ stress. The stress on the discs is directly linked to condylar displacements during mouth opening. Furthermore, morphological characteristics related to the relative position of the condyles in the glenoid fossa at the intercuspal position have a limited effect on condylar displacements and stresses. In conclusion, the morphological parameters, which are commonly employed in clinics, show only static conditions in the TMJs. The kinematic parameters provide dynamic information regarding the TMJs, which can be used in the examination, diagnosis, and treatment of TMJ diseases to reduce stress.
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Affiliation(s)
- Jingheng Shu
- Key Lab for Biomechanical Engineering of Sichuan Province, Sichuan University, Chengdu, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin, China
| | - Hedi Ma
- Key Lab for Biomechanical Engineering of Sichuan Province, Sichuan University, Chengdu, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin, China
| | - Yang Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Tinghui Zheng
- Key Lab for Biomechanical Engineering of Sichuan Province, Sichuan University, Chengdu, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin, China
| | - Bingmei Shao
- Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin, China; Basic Mechanics Lab, Sichuan University, Chengdu, China
| | - Zhan Liu
- Key Lab for Biomechanical Engineering of Sichuan Province, Sichuan University, Chengdu, China; Sichuan University Yibin Park, Yibin Institute of Industrial Technology, Yibin, China.
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Mehrotra S, Rana V, Asthana V, Raghuvanshi S. Radiological versus traditional parameters for airway assessment: A comparison. Anesth Essays Res 2022; 16:109-114. [PMID: 36249134 PMCID: PMC9558665 DOI: 10.4103/aer.aer_28_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/28/2022] [Accepted: 05/06/2022] [Indexed: 11/04/2022] Open
Abstract
Background: Aim: Settings and Design: Materials and Methods: Statistical Analysis Used: Results: Conclusion:
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10
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Bindu HM, Dogra N, Makkar JK, Bhatia N, Meena S, Gupta R. Limited condylar mobility by ultrasonography predicts difficult direct laryngoscopy in morbidly obese patients: An observational study. Indian J Anaesth 2021; 65:612-618. [PMID: 34584285 PMCID: PMC8445208 DOI: 10.4103/ija.ija_1508_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/04/2021] [Accepted: 08/02/2021] [Indexed: 12/25/2022] Open
Abstract
Background and Aims Unpredictable difficult laryngoscopy remains a challenge for anaesthesiologists, especially in morbidly obese patients. The present study aimed to determine the efficacy of different sonographic measures as predictors of difficult laryngoscopy in morbidly obese patients undergoing elective surgery. Methods This observational study evaluated 70 morbidly obese adult patients (body mass index >35 kg/m2) undergoing elective surgery under general anaesthesia with tracheal intubation. Pre-operative clinical and ultrasonographic variables (anterior condylar translation, tongue thickness, hyomental distance and oral cavity height) associated with difficult direct laryngoscopy ([Cormack Lehane (CL) grade>2]) were analysed. The primary outcome was to determine the efficacy of the above-mentioned sonographic measures as predictors of difficult laryngoscopy (CL grade >2). The secondary outcome compared ultrasonographic predictors with clinical predictors in morbidly obese patients for determining difficult direct laryngoscopy. Results Amongst the primary outcome measures, limited condylar mobility (anterior condylar translation <9.25 mm) [odds ratio (OR) 0.3, confidence interval (CI):1.04-1.22;P<0.001;area under curve (AUC):0.8] and increased tongue thickness >5.85 cm [OR: 3.2, CI: 1.05-10; P < 0.04; AUC: 0.73] were two independent sonographic predictors for difficult direct laryngoscopy by multivariate logistic regression and receiver operating characteristic curve analyses in morbidly obese patients. The secondary outcome suggested that as compared to clinical predictors such as Mallampati grade and thyromental distance, ultrasonographic variables such as tongue thickness and limited condylar mobility (sensitivity: 56.4%, 70.9%, 66.7% and 93.3%, respectively) better predicted difficult direct laryngoscopy in morbidly obese patients. Conclusion Limited condylar mobility and increased tongue thickness are independent sonographic predictors of difficult direct laryngoscopy in morbidly obese patients.
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Affiliation(s)
- Harika M Bindu
- Department of Anaesthesia and Intensive Care, PGIMER, Chandigarh, India
| | - Neeti Dogra
- Department of Anaesthesia and Intensive Care, PGIMER, Chandigarh, India
| | | | - Nidhi Bhatia
- Department of Anaesthesia and Intensive Care, PGIMER, Chandigarh, India
| | - Shyam Meena
- Department of Anaesthesia and Intensive Care, PGIMER, Chandigarh, India
| | - Rajesh Gupta
- Department of Surgical Gastroenterology, PGIMER, Chandigarh, India
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Zumbrunn Wojczyńska A, Markova M, Ettlin DA, Gallo LM, Colombo V. In-vivo kinematic assessment of alloplastic temporomandibular joint replacements by means of helical axis: A cohort study with historical control. J Biomech 2021; 122:110494. [PMID: 33991898 DOI: 10.1016/j.jbiomech.2021.110494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 11/18/2022]
Abstract
Alloplastic total temporomandibular joint replacement (TJR) is a surgical procedure used to restore normal mandibular function when conservative therapies fail. The instantaneous helical axis (HA), is a mathematical model used to visualize globally rigid body kinematics. It can be applied to mandibular motion for quantification of movement patterns and irregularities. Aim of this study was to analyze HA pathways in subjects with unilateral and bilateral TJR and compare them to a control group. An optoelectronic system was employed to track mouth opening/closing cycles (n = 3) of 15 patients (7 operated unilaterally, 8 bilaterally, 11 F, aged 24-72) and 12 controls (6 F, aged 23-40). HA position in space was determined for 30 equally-distributed steps of the observed movement. Total mandibular rotation around HA (Φtot) and total translation along HA (Ttot) were determined. Angles between HA and the anatomical coordinate system of the head (θx, θy, θz); global fluctuation of HA spatial orientation (θe), distance between condylar center (CP) and HA (dCP) and its projections on the axes (xdCP, ydCP, zdCP) were calculated. Overall, Φtot was larger in controls than in bilaterally operated subjects (p = 0.002, p = 0.003) and θz was larger in unilaterally operated subjects than in controls (p = 0.004) and bilaterally operated subjects (p = 0.002, p = 0.024). During opening, θe¯ was smaller in controls than in unilaterally operated subjects (p = 0.01). The distance dCP was smaller for alloplastic joints than for controls (p < 0.01 overall). In conclusion, mandibular HA pathways in patients with TJR differ significantly from controls in terms of spatial location and variability.
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Affiliation(s)
| | - Michala Markova
- Clinic of Masticatory Disorders, Center of Dental Medicine, University of Zurich, Switzerland
| | - Dominik A Ettlin
- Clinic of Masticatory Disorders, Center of Dental Medicine, University of Zurich, Switzerland
| | - Luigi M Gallo
- Clinic of Masticatory Disorders, Center of Dental Medicine, University of Zurich, Switzerland
| | - Vera Colombo
- Clinic of Masticatory Disorders, Center of Dental Medicine, University of Zurich, Switzerland.
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Chen CC, Lin CC, Hsieh HP, Fu YC, Chen YJ, Lu TW. In vivo three-dimensional mandibular kinematics and functional point trajectories during temporomandibular activities using 3d fluoroscopy. Dentomaxillofac Radiol 2021; 50:20190464. [PMID: 32783637 DOI: 10.1259/dmfr.20190464] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To measure in vivo three-dimensional kinematics of the mandible and associated end-point trajectories and to quantify their relationships during temporomandibular joint activities using 3D fluoroscopy. METHODS A novel fluoroscopy-based 3D measurement method was used to measure motions of the mandible and the associated end points (i.e. incisors and lateral poles of both condyles) during open close, lateral gliding and protrusion-retraction movements in healthy young individuals. The contributions of each of the rotational and translational components of the mandible to the end-point trajectories were quantified through experiment-based computer simulations. RESULTS The mandibular rotation was found to account for 91% of the maximal mouth-opening-capacity and 73% of the maximal lateral incisor movement, while the condylar translation contributed to 99% of the anterior protrusion distance. Incisor trajectories were nearly vertical within the first 60% of the maximal opening during the open-close movement. CONCLUSIONS Similar condylar downward rotation paths but with bilaterally asymmetrical ranges were used to perform basic mandibular movements of different targeted TI trajectories in three dimensions, that is, open-close, lateral-gliding and protrusion-retraction. Mandibular rotations contributed to the majority of the principal displacement components of the incisor, that is, vertical during open-close and towards the working-side-during lateral-gliding, while mandibular translation contributed mainly to the forward movement of the incisor during protrusion-retraction. Owing to the anatomical constraints, the freedom of mandibular translation is limited and mainly in the anteroposterior direction, which is considered helpful for the control and stability of the TMJ during oral activities.
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Affiliation(s)
- Chien-Chih Chen
- School of Dentistry, National Taiwan University, Taipei, Taiwan.,i-Change Dental Clinic, Taipei, Taiwan.,Department of Dentistry, Cardinal Tien Hospital, New Taipei City, Taiwan.,School of Dentistry, Taipei Medical University, Taipei, Taiwan
| | - Cheng-Chung Lin
- Department of Electrical Engineering, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Hong-Po Hsieh
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | - Yang-Chieh Fu
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | - Yunn-Jy Chen
- School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Tung-Wu Lu
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan.,Department of Orthopedic Surgery, School of Medicine, National Taiwan University, Taipei, Taiwan
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Linsen SS, Schön A, Mercuri LG, Teschke M. Unilateral, Alloplastic Temporomandibular Joint Reconstruction, Biomechanically What Happens to the Contralateral Temporomandibular Joint?-A Prospective Cohort Study. J Oral Maxillofac Surg 2021; 79:2016-2029. [PMID: 33631133 DOI: 10.1016/j.joms.2021.01.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE Unilateral alloplastic total temporomandibular joint reconstruction (TMJR) might influence the contralateral side joint function. This study's purpose was to estimate the risk for contralateral TMJR and the jaw function of the contralateral untreated temporomandibular joint (TMJ). PATIENTS AND METHODS A prospective cohort study design was used for patients who underwent unilateral alloplastic TMJR. The primary predictor was time after TMJR, and the secondary predictors were pre-TMJR mandibular angle resection, prior ipsilateral TMJ surgeries, and TMJR design (custom, stock). The primary outcome variable was the need for contralateral TMJR. The secondary outcome variables were the results of jaw function-jaw tracking, maximum voluntary clenching, surface electromyography, and pressure pain thresholds (PPT) and patient's quality-of-life (oral health-related quality-of-life [OHrQoL]). Data were collected preoperatively (T0), and 1 year (T1), 2-3 years (T2), and ≥ 4 years postoperatively (T4). Analysis of variance with post hoc Tukey -HSD test and multiple linear regression analysis were used for statistical analysis. P < .05 was considered significant. RESULTS Thirty-nine patients were enrolled, 15 males and 24 females, with an average age of 48.9 ± 16.2 years. Two patients (5.1%) required a contralateral TMJR. Contralateral condylar motion, incisal laterotrusion, and protrusion slightly decreased, while incisal opening (P = .003), rotation angle (P = .013), opening deflection, surface electromyography activity, maximum voluntary clenching (P = .01), PPTs, and OHrQoL all increased. Pre-TMJR mandibular angle resection had an impact on PPTs and subjective outcomes and prior ipsilateral TMJ surgeries on the opening rotation angle. CONCLUSIONS Based on this study, bilateral TMJR does not appear necessary when the contralateral TMJ is healthy. Unilateral alloplastic TMJR is associated with improved contralateral jaw function and OHrQoL.
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Affiliation(s)
- Sabine S Linsen
- Assistant Professor, Department of Prosthodontics, Preclinical Education and Dental Material Science, University Hospital Bonn, Bonn, Germany.
| | - Andreas Schön
- Assistant Professor, Department of Oral- and Maxillofacial Plastic Surgery, University Hospital Bonn, Bonn, Germany
| | - Louis G Mercuri
- Visiting Professor, Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL; Adjunct Professor, Department of Bioengineering, University of Illinois Chicago, Chicago, IL; and Clinical Consultant, TMJ Concepts, Ventura, CA
| | - Marcus Teschke
- Private Practice, Praxis fuer Gesichtschirurgie und Kiefergelenkschirurgie, Hamburg, Germany
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Škaričić J, Čimić S, Kraljević-Šimunković S, Vuletić M, Dulčić N. Influence of Occlusal Splint on Mandibular Movements in Patients with Bruxism: a Comparative Pilot Study. Acta Stomatol Croat 2020; 54:322-332. [PMID: 33132395 PMCID: PMC7586893 DOI: 10.15644/asc54/3/10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective The objective of this pilot study was to examine the impact of occlusal splint treatment on mandibular border movements and the condyle position in subjects with bruxism. Materials and methods The study included 9 subjects diagnosed with bruxism (mean age 28.7) and 9 subjects in the control group (mean age 30.5). All subjects were adults, eugnathic, and with a dentoalveolar Angle Class I, without prosthetic restorations, previous or current orthodontic treatments, a systemic disease or previous surgical interventions in the temporomandibular joint. All experimental and control group subjects were provided with a standardized relaxation occlusal splint, which they wore for 8 weeks. During this time, an initial and three additional measurements of incisal opening (IO), left condyle opening (OLC), right condyle opening (ORC), left laterotrusion (LLI) and right laterotrusion (LRI) (after 2, 4 and 8 weeks) were performed using an Arcus Digamma II (Kavo) ultrasound device for mandibular movements recording. Using the same instrument, the condylar position during protrusion, left and right laterotrusion, and in the centric relation position (CR) was analyzed initially and after 8 weeks using the maximum intercuspation as reference point. Continuous variables were described using basic statistical parameters, and the statistical significance of differences between the variables was checked by the t-test and χ2 test (p <0.05). Results The values of IO, OLC, ORC, LLI and LRI increased after 8 weeks of wearing, with the highest increase for OLC, by 13.8%. No statistically significant difference (p <0.05) was found for any changes in movements. Changes in the condyle position during all movements and those in the CR were higher in the experimental group for 10 out of 14 measured parameters compared to the control group. A statistically significant difference was established for 5 out of 14 measured parameters after the occlusal splint treatment. Conclusions The results of this pilot study have proven the influence of the occlusal splint treatment on mandibular border movements in subjects with bruxism by increasing the range of movements. Also the changes of the condyle position in subjects with bruxism were greater compared to those in healthy subjects.
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Affiliation(s)
- Josip Škaričić
- Private practice; PhD student, School of Dental Medicine, University of Zagreb, Croatia
| | - Samir Čimić
- Department of Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia
| | | | - Marko Vuletić
- Department of Oral Surgery, School of Dental Medicine, University of Zagreb, University Dental Clinic
| | - Nikša Dulčić
- Department of Prosthodontics, School of Dental Medicine, University of Zagreb, Croatia
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Woodford SC, Robinson DL, Mehl A, Lee PVS, Ackland DC. Measurement of normal and pathological mandibular and temporomandibular joint kinematics: A systematic review. J Biomech 2020; 111:109994. [PMID: 32971491 DOI: 10.1016/j.jbiomech.2020.109994] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 07/27/2020] [Accepted: 08/08/2020] [Indexed: 01/08/2023]
Abstract
Motion of the mandible and temporomandibular joint (TMJ) plays a pivotal role in the function of the dentition and associated hard and soft tissue structures, and facilitates mastication, oral communication and access to respiratory and digestive systems. Quantification of TMJ kinematics is clinically relevant in cases of prosthetic rehabilitations, TMJ disorders, osteoarthritis, trauma, tumour resection and congenital abnormalities, which are known to directly influence mandibular motion and loading. The objective of this systematic review was to critically investigate published literature on historic and contemporary measurement modalities used to quantify in vivo mandibular and TMJ kinematics in six degrees of freedom. The electronic databases of Scopus, Web of Science, Medline, Embase and Central were searched and 109 relevant articles identified. Publication quality was documented using a modified Downs and Black checklist. Axiography and ultrasonic tracking are commonly employed in the clinical setting due to their simplicity and capacity to rapidly acquire low-fidelity mandibular motion data. Magnetic and optoelectronic tracking have been used in combination with dental splints to produce higher accuracy measurements while minimising skin motion artefact, but at the expense of setup time and cost. Four-dimensional computed tomography provides direct 3D measurement of mandibular and TMJ motion while circumventing skin motion artefact entirely, but employs ionising radiation, is restricted to low sampling frequencies, and requires time-consuming image processing. Recent advances in magnetic tracking using miniature sensors adhered to the teeth in combination with intraoral scanning may facilitate rapid and high precision mandibular kinematics measurement in the clinical setting. The findings of this review will guide selection and application of mandibular and TMJ kinematic measurement for both clinical and research applications.
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Affiliation(s)
- Sarah C Woodford
- Department of Biomedical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Dale L Robinson
- Department of Biomedical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Albert Mehl
- Centre of Dental Medicine, University of Zürich, Zürich, Switzerland
| | - Peter V S Lee
- Department of Biomedical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia
| | - David C Ackland
- Department of Biomedical Engineering, University of Melbourne, Parkville, Victoria 3010, Australia.
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Does a learning curve exist for accuracy in three-dimensional planning for maxillary positioning in bimaxillary orthognathic surgery? Int J Oral Maxillofac Surg 2020; 49:787-793. [DOI: 10.1016/j.ijom.2019.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 08/26/2019] [Accepted: 10/04/2019] [Indexed: 11/24/2022]
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17
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Calil BC, da Cunha DV, Vieira MF, de Oliveira Andrade A, Furtado DA, Bellomo Junior DP, Pereira AA. Identification of arthropathy and myopathy of the temporomandibular syndrome by biomechanical facial features. Biomed Eng Online 2020; 19:22. [PMID: 32295597 PMCID: PMC7161015 DOI: 10.1186/s12938-020-00764-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 04/01/2020] [Indexed: 02/04/2023] Open
Abstract
Background Temporomandibular disorders (TMDs) are pathological conditions affecting the temporomandibular joint and/or masticatory muscles. The current diagnosis of TMDs is complex and multi-factorial, including questionnaires, medical testing and the use of diagnostic methods, such as computed tomography and magnetic resonance imaging. The evaluation, like the mandibular range of motion, needs the experience of the professional in the field and as such, there is a probability of human error when diagnosing TMD. The aim of this study is therefore to develop a method with infrared cameras, using the maximum range of motion of the jaw and four types of classifiers to help professionals to classify the pathologies of the temporomandibular joint (TMJ) and related muscles in a quantitative way, thus helping to diagnose and follow up on TMD. Methods Forty individuals were evaluated and diagnosed using the diagnostic criteria for temporomandibular disorders (DC/TMD) scale, and divided into three groups: 20 healthy individuals (control group CG), 10 individuals with myopathies (MG), 10 individuals with arthropathies (AG). A quantitative assessment was carried out by motion capture. The TMJ movement was captured with camera tracking markers mounted on the face and jaw of each individual. Data was exported and analyzed using a custom-made software. The data was used to identify and place each participant into one of three classes using the K-nearest neighbor (KNN), Random Forest, Naïve Bayes and Support Vector Machine algorithms. Results Significant precision and accuracy (over 90%) was reached by KNN when classifying the three groups. The other methods tested presented lower values of sensitivity and specificity. Conclusion The quantitative TMD classification method proposed herein has significant precision and accuracy over the DC/TMD standards. However, this should not be used as a standalone tool but as an auxiliary method for diagnostic TMDs.
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Affiliation(s)
- Bruno Coelho Calil
- Laboratory of Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila, 2121, Uberlandia, 38408-100, Brazil.
| | - Danilo Vieira da Cunha
- Laboratory of Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila, 2121, Uberlandia, 38408-100, Brazil
| | - Marcus Fraga Vieira
- Bioengineering and Biomechanics Laboratory, Federal University of Goias, Av. Esperanca, s/n, Campus Samambaia, Goiania, GO, 74690-900, Brazil
| | - Adriano de Oliveira Andrade
- Laboratory of Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila, 2121, Uberlandia, 38408-100, Brazil
| | - Daniel Antônio Furtado
- Laboratory of Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila, 2121, Uberlandia, 38408-100, Brazil
| | - Douglas Peres Bellomo Junior
- Laboratory of Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila, 2121, Uberlandia, 38408-100, Brazil
| | - Adriano Alves Pereira
- Laboratory of Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlandia, Av. Joao Naves de Avila, 2121, Uberlandia, 38408-100, Brazil
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AlHammad ZA, Alomar AF, Alshammeri TA, Qadoumi MA. Maximum mouth opening and its correlation with gender, age, height, weight, body mass index, and temporomandibular joint disorders in a Saudi population. Cranio 2019; 39:303-309. [PMID: 31352868 DOI: 10.1080/08869634.2019.1646983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objective: To investigate maximum mouth opening (MMO) and its correlation with gender, age, height, weight, Body Mass Index, and temporomandibular joint disorders in a Saudi population.Methods: This is an observational cross-sectional study of 222 Saudi patients (46% male and 54% female). Patients were clinically examined, and files were accessed to record data. Frequency test was mainly used along with correlation tests.Results: The mean MMO for all subjects was 47.8 ± 6.9 mm. The mean MMO for male subjects was 50.8 ± 7.0 mm, and the mean MMO for female subjects was 45.2 ± 5.7 mm. The mean MMO of male subjects was significantly higher than the mean MMO of female subjects. MMO had a significantly weak positive correlation with height and weight.Conclusion: Male subjects had a significantly higher MMO than female subjects. MMO showed a weak but positive significant correlation with height and weight.
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Affiliation(s)
| | - Ahmed Fathi Alomar
- Department of Oral and Maxillofacial Surgery, King Khalid University Hospital, Dental University Hospital, Faculty of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Talal Alhemmedi Alshammeri
- Oral and Maxillofacial Surgery, King Saud Medical City, Alfarabi, College of Dentistry, Riyadh, Saudi Arabia
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Andrade RM, Guimarães LR, Ribeiro AP, Pasqual Marques A, Crivello O, Gonçalves de Carvalho BK, Amado João SM. Reliability in Mandibular Movement Evaluation Using Photogrammetry in Patients With Temporomandibular Disorders. J Manipulative Physiol Ther 2019; 42:267-275. [PMID: 31262580 DOI: 10.1016/j.jmpt.2018.11.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 07/12/2018] [Accepted: 11/02/2018] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The purpose of this study was to propose a quantitative evaluation for mandibular opening-closing movement asymmetries and to verify the intraexaminer and interexaminer reliability using photogrammetry in individuals with and without myogenic temporomandibular disorders. METHODS Forty-nine female participants between ages 18 and 40 were enrolled in this study. They were assigned to 2 different groups: a temporomandibular disorder group, (n = 25; 28.1 ± 3.6 years) and an asymptomatic group (n = 24; 25.6 ± 5.1 years). Data were collected through photogrammetry using Corel Draw X3 software (Corel Corp, Ottawa, Ontario, Canada) for angle measurements. Reliability analysis was done on the total sample, and the photographs were obtained by a singular examiner on 2 occasions (intraexaminer) 1 month apart and from measurement made by another examiner (interexaminer) on different days. The intraclass correlation coefficient (ICC) was applied with a significance level of 5%. RESULTS The photogrammetry had excellent intrarater and inter-rater reliability for the evaluation of opening and closing movements of the jaw (intrarater: opening ICC = 0.99; closing ICC = 0.98; inter-rater: opening ICC = 0.89 and closing ICC = 0.82). Photogrammetry also demonstrated excellent intra- and inter-rater reliability in the evaluation of head posture (intra-rater: head deviation ICC = 0.96; head position ICC = 0.75; inter-rater: head deviation ICC = 0.98; head position ICC = 0.98). CONCLUSION Under these experimental conditions, most angular values presented excellent intra- and interexaminer reliability.
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Affiliation(s)
- Rodrigo Mantelatto Andrade
- Department of Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of São Paulo, São Paulo, Brazil; Department of Physical Therapy, Pontifícia Universidade Católica de São Paulo, São Paulo, Brazil.
| | - Luciana Ribeiro Guimarães
- Rehabilitation and Functional Development Program, School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ana Paula Ribeiro
- Department of Post-Graduation of Health Sciences, University of Santo Amaro, São Paulo, Brazil
| | - Amélia Pasqual Marques
- Department of Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Oswaldo Crivello
- School of Odontology, University of São Paulo, São Paulo, Brazil
| | | | - Sílvia Maria Amado João
- Department of Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of São Paulo, São Paulo, Brazil
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Kondrat W, Sierpinska T, Radke J. Can devices for the instrumental analysis of temporomandibular joints be used interchangeably? Cranio 2019; 39:165-171. [PMID: 30810514 DOI: 10.1080/08869634.2019.1582837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Objective: To compare the results obtained in instrumental analysis of temporomandibular joints function using joint vibration analysis and computerized axiography in healthy young adults.Methods: The study involved 187 people aged 18-21 years old. All the participants were subjected to a clinical examination and instrumental diagnostics that included joint vibration analysis and computerized axiography.Results: Significant differences in the maximum range of condylar movement (p = 0.0001) were reported between the group of people with healthy joints (p = 0.001) and the remaining groups. There were significant statistical differences (p = 0.02) between the group of people with loose articular ligaments and subluxation of the joint in terms of the parameter describing the symmetry of the sagittal position of the condyle on the distance of 5 mm.Discussion: Electrovibratography and computerized axiography did not reveal the same abnormalities in the functioning of the masticatory system.
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Affiliation(s)
- Wojciech Kondrat
- Department of Prosthetic Dentistry, Medical University of Bialystok, Poland
| | - Teresa Sierpinska
- Department of Dental Techniques, Medical University of Bialystok, Poland
| | - John Radke
- BioRESEARCH Associates, Inc., Milwaukee, WI, USA
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21
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Ho KY, Laskowski B, Garcia D, Hardy CJ, Puentedura E. Measurement of anterior translation of the mandibular condyle using sonography. J Phys Ther Sci 2019; 31:116-121. [PMID: 30774218 PMCID: PMC6348191 DOI: 10.1589/jpts.31.116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Accepted: 10/24/2018] [Indexed: 12/17/2022] Open
Abstract
[Purpose] To establish a standardized sonographic approach to quantify anterior
translation of the mandibular condyle during mouth opening by examining the reliability of
image acquisition and processing, and to understand how anterior condylar translation
contributes to mouth opening. [Participants and Methods] Twenty-eight participants without
temporomandibular disorder (TMD) participated. During day 1 of data collection, all
participants performed maximal mouth opening while an examiner recorded anterior condylar
translation using sonography. The mouth opening range of motion was also obtained. On day
2 of data collection, the same procedure was performed on 6 participants that participated
in day 1 of data collection. To establish reliability of image processing, 3 examiners
measured condylar translations on 2 separate days. To determine reliability of image
acquisition, images obtained from 2 days of data collection were analyzed. [Results]
Excellent intra-class correlation coefficients (ICCs) and small standard errors of
measurement (SEMs) for image acquisition and processing were shown. A significant, linear
model was found to describe the relationship between condylar anterior translations and
mouth opening. [Conclusion] Anterior condylar translation during mouth opening can be
reliably measured using sonography. The linear relation between condylar motion and mouth
opening can be used to guide clinical practices.
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Affiliation(s)
- Kai-Yu Ho
- Department of Physical Therapy, University of Nevada, Las Vegas: 4505 S. Maryland Parkway, Box 453029 Las Vegas, NV 89154, USA
| | - Brooke Laskowski
- Department of Physical Therapy, University of Nevada, Las Vegas: 4505 S. Maryland Parkway, Box 453029 Las Vegas, NV 89154, USA
| | - Danielle Garcia
- Department of Physical Therapy, University of Nevada, Las Vegas: 4505 S. Maryland Parkway, Box 453029 Las Vegas, NV 89154, USA
| | - Christensen J Hardy
- Department of Physical Therapy, University of Nevada, Las Vegas: 4505 S. Maryland Parkway, Box 453029 Las Vegas, NV 89154, USA
| | - Emilio Puentedura
- Department of Physical Therapy, University of Nevada, Las Vegas: 4505 S. Maryland Parkway, Box 453029 Las Vegas, NV 89154, USA.,Doctor of Physical Therapy Program, Baylor University, USA
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Komori H, Kawanabe N, Kataoka T, Kato Y, Fujisawa A, Yamashiro T, Kamioka H. The different effects of intraoral vertical ramus osteotomy (IVRO) and sagittal split ramus osteotomy (SSRO) on mandibular border movement. Cranio 2017; 36:228-233. [PMID: 28436308 DOI: 10.1080/08869634.2017.1317899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVES This study investigated the different effects of intraoral vertical ramus osteotomy (IVRO) and sagittal split ramus osteotomy (SSRO) on mandibular border movement. METHODS The participants included 22 patients receiving IVRO and 22 patients receiving SSRO who were treated at Okayama University Hospital. Their mandibular border movement was evaluated in three dimensions with 6° of freedom using an optical recording system. RESULTS A strong correlation between condylar and lower incisor movement was observed during maximum jaw protrusion and laterotrusion. Significant improvements in condylar and lower incisor movement were detected after orthognathic surgery during maximum jaw protrusion and laterotrusion in the IVRO group and during maximum jaw protrusion in the SSRO group. DISCUSSION IVRO likely achieves greater improvement in jaw movement than SSRO. Therefore, the application of IVRO could be considered in the treatment of patients with jaw deformities featuring temporomandibular joint problems.
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Affiliation(s)
- Hiroki Komori
- a Department of Orthodontics , Okayama University Hospital , Okayama , Japan
| | - Noriaki Kawanabe
- b Department of Orthodontics , Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University , Okayama , Japan
| | - Tomoki Kataoka
- b Department of Orthodontics , Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University , Okayama , Japan
| | - Yui Kato
- a Department of Orthodontics , Okayama University Hospital , Okayama , Japan
| | - Atsuro Fujisawa
- b Department of Orthodontics , Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University , Okayama , Japan
| | - Takashi Yamashiro
- c Department of Orthodontics and Dentofacial Orthopedics , Graduate School of Dentistry, Osaka University , Osaka , Japan
| | - Hiroshi Kamioka
- b Department of Orthodontics , Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University , Okayama , Japan
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Yao W, Zhou Y, Wang B, Yu T, Shen Z, Wu H, Jin X, Li Y. Can Mandibular Condylar Mobility Sonography Measurements Predict Difficult Laryngoscopy? Anesth Analg 2017; 124:800-806. [DOI: 10.1213/ane.0000000000001528] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Alloplastic total temporomandibular joint replacements: do they perform like natural joints? Prospective cohort study with a historical control. Int J Oral Maxillofac Surg 2016; 45:1213-21. [DOI: 10.1016/j.ijom.2016.04.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/12/2016] [Accepted: 04/28/2016] [Indexed: 11/21/2022]
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25
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Frisoli M, Edelhoff JM, Gersdorff N, Nicolet J, Braidot A, Engelke W. Comparative study using video analysis and an ultrasonic measurement system to quantify mandibular movement. Cranio 2016; 35:19-29. [DOI: 10.1080/08869634.2015.1123376] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Linsen SS, Wolf M, Müßig D. Long-term outcomes of mandibular kinematics following class II malocclusion therapy with removable functional appliance therapy. Cranio 2016; 34:363-370. [DOI: 10.1080/08869634.2015.1133005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ugolini A, Mapelli A, Segù M, Galante D, Sidequersky FV, Sforza C. Kinematic analysis of mandibular motion before and after orthognathic surgery for skeletal Class III malocclusion: A pilot study. Cranio 2016; 35:94-100. [DOI: 10.1080/08869634.2016.1154681] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Alessandro Ugolini
- Laboratorio di Anatomia Funzionale dell’Apparato Stomatognatico (LAFAS), Facoltà di Medicina e Chirurgia, Dipartimento di Scienze Biomediche per la Salute, Functional Anatomy Research Center (FARC), Università degli Studi di Milano, via Mangiagalli 31, I-20133 Milano, Italy
| | - Andrea Mapelli
- Laboratorio di Anatomia Funzionale dell’Apparato Stomatognatico (LAFAS), Facoltà di Medicina e Chirurgia, Dipartimento di Scienze Biomediche per la Salute, Functional Anatomy Research Center (FARC), Università degli Studi di Milano, via Mangiagalli 31, I-20133 Milano, Italy
| | - Marzia Segù
- Laboratorio di Anatomia Funzionale dell’Apparato Stomatognatico (LAFAS), Facoltà di Medicina e Chirurgia, Dipartimento di Scienze Biomediche per la Salute, Functional Anatomy Research Center (FARC), Università degli Studi di Milano, via Mangiagalli 31, I-20133 Milano, Italy
| | - Domenico Galante
- Laboratorio di Anatomia Funzionale dell’Apparato Stomatognatico (LAFAS), Facoltà di Medicina e Chirurgia, Dipartimento di Scienze Biomediche per la Salute, Functional Anatomy Research Center (FARC), Università degli Studi di Milano, via Mangiagalli 31, I-20133 Milano, Italy
| | - Fernanda V. Sidequersky
- Laboratorio di Anatomia Funzionale dell’Apparato Stomatognatico (LAFAS), Facoltà di Medicina e Chirurgia, Dipartimento di Scienze Biomediche per la Salute, Functional Anatomy Research Center (FARC), Università degli Studi di Milano, via Mangiagalli 31, I-20133 Milano, Italy
| | - Chiarella Sforza
- Laboratorio di Anatomia Funzionale dell’Apparato Stomatognatico (LAFAS), Facoltà di Medicina e Chirurgia, Dipartimento di Scienze Biomediche per la Salute, Functional Anatomy Research Center (FARC), Università degli Studi di Milano, via Mangiagalli 31, I-20133 Milano, Italy
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Park KS, Song HC, Cho SG, Kang SR, Kim J, Jun HM, Song M, Jeong GC, Park HJ, Kwon SY, Min JJ, Bom HHS. Open-Mouth Bone Scintigraphy Is Better than Closed-Mouth Bone Scintigraphy in the Diagnosis of Temporomandibular Osteoarthritis. Nucl Med Mol Imaging 2016; 50:213-8. [PMID: 27540425 DOI: 10.1007/s13139-016-0407-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 01/25/2016] [Accepted: 02/11/2016] [Indexed: 01/24/2023] Open
Abstract
PURPOSE Closed-mouth bone scintigraphy (CM scan) and closed-mouth single-photon emission computed tomography (CM SPECT) are used for conventional evaluation of osteoarthritis of the temporomandibular joint (TMJ). However, the adequacy of open-mouth bone scintigraphy (OM scan) has not yet been evaluated. Therefore, the purpose of this study was to compare the diagnostic performance of CM scan, CM SPECT, and OM scan. METHODS Thirty-six patients with suspicion of an abnormality of the TMJ and who underwent a (99m)Tc-HDP CM scan, CM SPECT, and an OM scan were enrolled. The scans were assessed visually for the presence of positive focal uptake in the TMJ. Osteoarthritis was defined as arthralgia plus crepitus or radiologic signs of arthrosis. RESULTS Of 72 TMJs, 21 (29.2 %) were diagnosed with osteoarthritis. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy were 90.5 %, 49.0 %, 42.2 %, 92.6 % and 61.1 % for the CM scan, 81.0 %, 58.8 %, 44.7 %, 88.2 % and 65.3 % for CM SPECT, and 81.0 %, 82.4 %, 65.4 %, 91.3 % and 81.9 % for the OM scan, respectively. The accuracy of the OM scan was higher than that of CM SPECT and the CM scans (p = 0.004 and p < 0.001, respectively). CONCLUSIONS The OM scan was more accurate than the conventional CM scan and even CM SPECT for diagnosing TMJ osteoarthritis.
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Affiliation(s)
- Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Haeng Man Jun
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Minchul Song
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Geum-Cheol Jeong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
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Kerwell S, Alfaro M, Pourzal R, Lundberg HJ, Liao Y, Sukotjo C, Mercuri LG, Mathew MT. Examination of failed retrieved temporomandibular joint (TMJ) implants. Acta Biomater 2016; 32:324-335. [PMID: 26768232 DOI: 10.1016/j.actbio.2016.01.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 12/09/2015] [Accepted: 01/03/2016] [Indexed: 12/27/2022]
Abstract
In the management of end-stage temporomandibular joint disorders (TMD), surgeons must often resort to alloplastic temporomandibular joint (TMJ) total joint replacement (TJR) to increase mandibular function and form, as well as reduce pain. Understanding wear and failure mechanisms of TMJ TJR implants is important to their in vivo longevity. However, compared to orthopedic TJR devices, functional wear of failed TMJ TJR implants has not been examined. Not only do wear and corrosion influence TJR implant in vivo longevity, but so does reactivity of peri-implant tissue to these two events. The aim of this study was to examine and report on the wear of retrieved, failed metal-on-metal (MoM), metal-on-polymer (MoP), and titanium-nitride coated (TiN Coated) TMJ TJR implant components. A total cohort of 31 TMJ TJR devices were studied of which 28 were failed, retrieved TMJ TJRs, 3 were never implanted devices that served as controls. The mean time from implantation to removal was 7.24 years (range 3-15), SD 3.01. Optical microscopy, White Light Interferometry (WLI), Scanning Electron Microscopy (SEM), and Raman spectroscopy were utilized to characterize the surfaces of the devices. Data was acquired and evaluated by analyzing alloy microstructure. Substantial surface damage was observed between the articulating areas of the condylar head and the glenoid fossa components. Damage included pitting corrosion, evidence of deposited corrosion products, specific wear patterns, hard phases, surface depressions, and bi-directional scratches. Electrochemical analysis was performed on the MoM Control, retrieved, failed MoM, and TiN Coated devices. Electrochemical tests consisted of open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) tests conducted using the condylar head of the retrieved failed devices. EIS confirmed material properties as well as corrosion kinetics in vivo help to mitigate corrosion as reflected by the Raman spectroscopy results. In summary, this study demonstrated the role of wear and corrosion interactions on the early failure of TMJ TJR devices. Since the materials employed in most orthopedic TJR devices are similar to those used in TMJ TJR implants, studies such as this can provide data that will improve future embodiment paradigms for both. Further studies will include in vitro investigation of corrosion kinetics and the underlying tribocorrosion mechanism of TMJ TJR devices. STATEMENT OF SIGNIFICANCE An attempt is made in this study, to examine the retrieved TMJ implants and conduct surface and electrochemical analysis; further a translation research approach is employed to compare the observations from the total hip replacement (THR) retrievals. A total cohort of 31 TMJ TJR devices were studied of which 28 were failed, retrieved TMJ TJRs, 3 were never implanted devices that served as controls. Data was acquired and evaluated by analyzing alloy microstructure. Substantial surface damage was observed between the articulating areas of the condylar head and the glenoid fossa components. Electrochemical analysis was performed on the MoM Control, retrieved, failed MoM, and TiN Coated devices. This study demonstrated the role of wear and corrosion interactions on the early failure of TMJ TJR devices. Since the materials employed in most orthopedic TJR devices are similar to those used in TMJ TJR implants, a comparison study was conducted.
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Affiliation(s)
- S Kerwell
- Department of Bioengineering, University of Illinois at Chicago, Chicago, USA; Department of Orthopedic Surgery, Rush University Medical Center, Chicago, USA; Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Chicago, IL, USA
| | - M Alfaro
- Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, USA; Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Chicago, IL, USA
| | - R Pourzal
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, USA
| | - H J Lundberg
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, USA
| | - Y Liao
- Department of Material Science and Engineering, Northwestern University, Evanston, IL, USA
| | - C Sukotjo
- Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, USA; Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Chicago, IL, USA
| | - L G Mercuri
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, USA; Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Chicago, IL, USA
| | - M T Mathew
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, USA; Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, USA; Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Chicago, IL, USA.
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Sójka A, Huber J, Kaczmarek E, Hędzelek W. Evaluation of Mandibular Movement Functions Using Instrumental Ultrasound System. J Prosthodont 2015; 26:123-128. [PMID: 26488230 DOI: 10.1111/jopr.12389] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2015] [Indexed: 11/28/2022] Open
Abstract
PURPOSE The article deals with routinely performed instrumental temporomandibular joint (TMJ) examinations and interpretation of findings obtained from the Arcus Digma ultrasound device in individuals with or without clinical symptoms of temporomandibular disorders (TMD). The aim of this study was to analyze mandibular movement functions and the relationship between incisors and condylar movement parameters during jaw opening, which may be helpful for clinical evaluation in these patients. MATERIALS AND METHODS The study group consisted of 84 young students with no dental problems and other serious acute or chronic diseases in the medical history; the students were examined both clinically and with the Arcus Digma ultrasound device. RESULTS Helkimo Di = I was the most common score in 49 participants, and Helkimo Di = II in a significantly (p < 0.01, Di = I vs. Di = II) smaller number of participants. Medical history revealed symptoms of unilateral mastication in 15 participants and a statistically significant increased (p < 0.02, participants with symptoms of unilateral mastication vs. asymptomatic) condylar range of motion parameter during retrusion. Also a significant decrease (p < 0.03, participants with symptoms of unilateral mastication vs. asymptomatic) of the incisal and condylar ranges of motion during mouth opening was found. Limitation of mouth opening, defined as a decrease of inter-incisal distance, appeared in 19 participants (22.6%) and in 25 participants (29.8%) measured instrumentally with the Arcus Digma device. A comparison of instrumental result examinations of the right and left TMJs showed positive correlations of the range of mandible opening movement with the Posselt opening movement (r = 0.75) and opening/closing movements with the Posselt closing movements (r = 0.70). A correlation was demonstrated (r = 0.81) between the condylar range of motion studied on the left and on the right TMJ during mandible opening movement. Correlations were also found between opening-closing movements and the condylar range of motion of the left TMJ, and between the opening-closing movement and the condylar range of motion of the right TMJ during the opening movement. CONCLUSIONS According to the results of this study with instrumental Arcus Digma ultrasound device measurements of mandibular movements, data were provided on irregularities in TMJ function not detected in participants with or without clinical symptoms of TMD.
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Affiliation(s)
- Anna Sójka
- Department of Prosthodontics, University of Medical Sciences, Poznań, Poland
| | - Juliusz Huber
- Department of Pathophysiology of Locomotor Organs, University of Medical Sciences, Poznań, Poland
| | - Elżbieta Kaczmarek
- Department of Bioinformatics and Computational Biology, University of Medical Sciences, Poznań, Poland
| | - Wiesław Hędzelek
- Department of Prosthodontics, University of Medical Sciences, Poznań, Poland
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Chang AR, Han JJ, Kim DS, Yi WJ, Hwang SJ. Evaluation of intra-articular distance narrowing during temporomandibular joint movement in patients with facial asymmetry using 3-dimensional computed tomography image and tracking camera system. J Craniomaxillofac Surg 2015; 43:342-8. [PMID: 25648068 DOI: 10.1016/j.jcms.2014.12.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 11/18/2014] [Accepted: 12/30/2014] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Functional overloading can lead to disc displacement in the temporomandibular joint (TMJ), and a high incidence of disc displacement has been reported in patients with facial asymmetry. The aim of this study was to assess the dynamic condylar movement in patients (n = 26) with facial asymmetry using a simulation system with 3-dimensional computed tomographic images and tracking camera system. MATERIAL AND METHODS The intra-articular distance (IAD) between the condyle and glenoid fossa was recorded during TMJ movement as a parameter for functional overloading and compared between Group I with severe asymmetry and Group II with mild asymmetry. RESULTS The average IAD was shorter in Group I than Group II, especially at the lowest point (P < 0.05). The ratio of IAD narrowing in Group I was significantly larger than in Group II (P < 0.05). The mean IAD were slightly smaller on the deviated side (3.41 mm) than on the nondeviated side (3.55 mm) in Group I, even though there was no statistical significance. The maximum displacement in Group I was longer than in Group II and had no significant difference between deviated side and nondeviated side. CONCLUSION We suggested that the reduced IAD resulting from TMJ overloading can lead to internal derangement in severe facial asymmetry.
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Affiliation(s)
- Ah Ryum Chang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Republic of Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Republic of Korea
| | - Dae-Seung Kim
- Interdisciplinary Program in Radiation, Applied Life Science Major, College of Medicine, BK21, and Dental Research Institute, Seoul National University, Republic of Korea
| | - Won-Jin Yi
- Department of Oral and Maxillofacial Radiology, BK21, and Dental Research Institute, School of Dentistry, Seoul National University, Republic of Korea.
| | - Soon Jung Hwang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Republic of Korea.
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van Bruggen HW, Van Den Engel-Hoek L, Steenks MH, Bronkhorst EM, Creugers NHJ, de Groot IJM, Kalaykova SI. Reduced mandibular range of motion in Duchenne Muscular Dystrophy: predictive factors. J Oral Rehabil 2015; 42:430-8. [PMID: 25600935 DOI: 10.1111/joor.12274] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2014] [Indexed: 11/26/2022]
Abstract
Patients with Duchenne muscular dystrophy (DMD) experience negative effects upon feeding and oral health. We aimed to determine whether the mandibular range of motion in DMD is impaired and to explore predictive factors for the active maximum mouth opening (aMMO). 23 patients with DMD (mean age 16.7 ± 7.7 years) and 23 controls were assessed using a questionnaire about mandibular function and impairments. All participants underwent a clinical examination of the masticatory system, including measurement of mandibular range of motion and variables related to mandibular movements. In all patients, quantitative ultrasound of the digastric muscle and the geniohyoid muscle and the motor function measure (MFM) scale were performed. The patients were divided into early and late ambulatory stage (AS), early non-ambulatory stage (ENAS) and late non-ambulatory stage (LNAS). All mandibular movements were reduced in the patient group (P < 0.001) compared to the controls. Reduction in the aMMO (<40 mm) was found in 26% of the total patient group. LNAS patients had significantly smaller mandibular movements compared to AS and ENAS (P < 0.05). Multiple linear regression analysis for aMMO revealed a positive correlation with the body height and disease progression, with MFM total score as the strongest independent risk factor (R(2) = 0.71). Mandibular movements in DMD are significantly reduced and become more hampered with loss of motor function, including the sitting position, arm function, and neck and head control. We suggest that measurement of the aMMO becomes a part of routine care of patients with DMD.
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Affiliation(s)
- H W van Bruggen
- Department of Oral Function and Prosthetic Dentistry, College of Dental Science, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands; Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center, Utrecht, The Netherlands
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Shaffer SM, Brismée JM, Sizer PS, Courtney CA. Temporomandibular disorders. Part 1: anatomy and examination/diagnosis. J Man Manip Ther 2014; 22:2-12. [PMID: 24976743 DOI: 10.1179/2042618613y.0000000060] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Temporomandibular disorders (TMD) are a heterogeneous group of diagnoses affecting the temporomandibular joint (TMJ) and surrounding tissues. A variety of methods for evaluating and managing TMD have been proposed within the physical therapy profession but these sources are not peer-reviewed and lack updates from scientific literature. The dental profession has provided peer-reviewed sources that lack thoroughness with respect to the neuromusculoskeletal techniques utilized by physical therapists. The subsequent void creates the need for a thorough, research informed, and peer-reviewed source regarding TMD evaluation and management for physical therapists. This paper is the first part in a two-part series that seeks to fill the current void by providing a brief but comprehensive outline for clinicians seeking to provide services for patients with TMD. Part one focuses on anatomy and pathology, arthro- and osteokinematics, epidemiology, history taking, and physical examination as they relate to TMD. An appreciation of the anatomical and mechanical features associated with the TMJ can serve as a foundation for understanding a patient's clinical presentation. Performance of a thorough patient history and clinical examination can guide the clinician toward an improved diagnostic process.
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Affiliation(s)
- Stephen M Shaffer
- Department of Rehabilitation Sciences, School of Allied Health Sciences, Texas Tech University Health Sciences Center, USA
| | - Jean-Michel Brismée
- Department of Rehabilitation Sciences, School of Allied Health Sciences, Texas Tech University Health Sciences Center, USA
| | - Phillip S Sizer
- Department of Rehabilitation Sciences, School of Allied Health Sciences, Texas Tech University Health Sciences Center, USA
| | - Carol A Courtney
- Department of Physical Therapy, College of Applied Health Sciences, University of Illinois at Chicago, USA
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Kataoka T, Kawanabe N, Shiraga N, Hashimoto T, Deguchi T, Miyawaki S, Takano-Yamamoto T, Yamashiro T. The Influence of Craniofacial Morphology on Mandibular Border Movements. Cranio 2014; 31:14-22. [DOI: 10.1179/crn.2013.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Functional analysis of the rabbit temporomandibular joint using dynamic biplane imaging. J Biomech 2014; 47:1360-7. [PMID: 24594064 DOI: 10.1016/j.jbiomech.2014.01.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 01/30/2014] [Accepted: 01/31/2014] [Indexed: 11/23/2022]
Abstract
The dynamic function of the rabbit temporomandibular joint (TMJ) was analyzed through non-invasive, three-dimensional skeletal kinematics, providing essential knowledge for understanding normal joint motion. The objective of this study was to evaluate and determine repeatable measurements of rabbit TMJ kinematics. Maximal distances, as well as paths were traced and analyzed for the incisors and for the condyle-fossa relationship. From one rabbit to another, the rotations and translations of both the incisors and the condyle relative to the fossa contained multiple clear, repeatable patterns. The slope of the superior/inferior incisor distance with respect to the rotation about the transverse axis was repeatable to 0.14 mm/deg and the right/left incisor distance with respect to the rotation about the vertical axis was repeatable to 0.03 mm/deg. The slope of the superior/inferior condylar translation with respect to the rotational movement about the transverse axis showed a consistent relationship to within 0.05 mm/deg. The maximal translations of the incisors and condyles were also consistent within and between rabbits. With an understanding of the normal mechanics of the TMJ, kinematics can be used to compare and understand TMJ injury and degeneration models.
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Hayasaki H, Saitoh I, Iwase Y, Inada E, Hasegawa H, Tokutomi J, Matsumoto Y, Yamasaki Y. Movement of the Instantaneous Center of Rotation and the Position of the Lateral Excursion Center During Lateral Excursion. Cranio 2014; 26:253-62. [PMID: 19004306 DOI: 10.1179/crn.2008.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- Haruaki Hayasaki
- Dept. of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.
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Chen HY, Wu SK, Lu CC, You JY, Lai CL. Assessing the mobility of the mandibular condyle by sonography. Patient Prefer Adherence 2014; 8:1419-25. [PMID: 25342888 PMCID: PMC4206250 DOI: 10.2147/ppa.s72532] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Traditionally, the measurement of the maximal mouth opening was regarded as the mobility of the temporomandibular joint. The information, however, was not reliable. Sonography was often used to diagnose disc displacement in the temporomandibular joint and its validity was well established. The tool was also appropriate for measuring the outcome of temporomandibular disorders management. Therefore, the purpose of the study was to examine completely the reliability and error for evaluating the mobility of the mandibular condyle by sonography. In addition, the existing methods were modified to improve the repeatability. PATIENTS AND METHODS The reliability examinations included between-image and within-image explorations to represent the reliabilities of the image capturing and the mobility measuring, respectively. Sixty-two subjects were recruited to receive ultrasonic examination for condylar mobility. The images of the condyle in mouth closing and opening were captured and the horizontal displacement of the condyles was measured as the anterior translation of the condyle. To confirm that the probe did not move during mouth opening, a marker was placed between the skin and the ultrasonic probe as the landmark. RESULTS The results demonstrated that the intrarater and interrater reliabilities in the within-image test were 0.986 and 0.970 and the reliabilities in the between-image test were 0.904 and 0.857, respectively. The standard errors of measurement in the within-image and between-image tests were 0.04 cm and 0.09 cm, respectively. CONCLUSION Sonography is a reliable tool to assess condylar mobility and can be used to measure the treatment outcome for temporomandibular disorders.
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Affiliation(s)
- Han-Yu Chen
- Department of Physical Therapy, Hungkuang University, Taichung, Taiwan
| | - Shyi-Kuen Wu
- Department of Physical Therapy, Hungkuang University, Taichung, Taiwan
| | - Chuan-Chin Lu
- Department of Physical Therapy, Hungkuang University, Taichung, Taiwan
- Department of Rheumatology, Taichung Hospital, Department of Health, Taiwan
| | - Jia-Yuan You
- Department of Physical Therapy, I-Shou University, Kaohsiung, Taiwan
| | - Chung-Liang Lai
- Department of Physical Medicine and Rehabilitation, Taichung Hospital, Department of Health, Taiwan
- Correspondence: Chung-Liang Lai, Department of Physical Medicine and Rehabilitation, Taichung Hospital, Department of Health, No 199, Section 1, San-Ming Road, Taichung 403, Taiwan, Tel +886 4 2229 4411 Ext 6362, Fax +886 4 2222 9517, Email
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Othman NE, Abdullah SA, Wahab HA, Rashid H. New Mouth Spacer Design for Dental Application. APPLIED MECHANICS AND MATERIALS 2013; 393:993-998. [DOI: 10.4028/www.scientific.net/amm.393.993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Mouth spacer is designed to keep the mouth open wide enough for the dentist during dental procedures. Designing and developing a mouth spacer that able to open mouth wide enough and limit the tongue movement is the main objectives for this paper. The new mouth spacer design is expected to reduce gums and jaws pain. This paper incorporates problem identification, idea generation and conceptualization stage in order to generate two design concepts for new mouth spacer designed. The mouth spacer conceptual design with dual function that complied with these project objectives was selected. This design was modeled by using of CATIA software and the suggested material is polyvinylacetate polyethylene (EVA) copolymer and application of silicone sponge gel on the side for patient comfort and satisfaction. The mock up design was prepared using RP machine to visualize the conceptual design. Above all, this paper gives detailed description function of the mouth spacer that may improve the dental surgery application towards a better procedure.
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The relationship between the changes in three-dimensional facial morphology and mandibular movement after orthognathic surgery. J Craniomaxillofac Surg 2013; 41:686-93. [PMID: 23465640 DOI: 10.1016/j.jcms.2013.01.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 01/03/2013] [Accepted: 01/03/2013] [Indexed: 11/20/2022] Open
Abstract
PURPOSE The purpose of this study was to investigate the relationship between changes in three-dimensional (3D) facial morphology and mandibular movement after orthognathic surgery. We hypothesized that facial morphology changes after orthognathic surgery exert effects on 3D mandibular movement. MATERIALS AND METHODS We conducted a prospective follow-up study of patients who had undergone orthognathic surgical procedures. Three-dimensional facial morphological values were measured from facial CT images before and three months after orthognathic surgery. Three-dimensional maximum mandibular opening (MMO) values of four points (bilateral condylions, infradentale, and pogonion) were also measured using a mandibular movement tracking and simulation system. The predictor variables were changes in morphological parameters divided into two groups (deviated side (DS) or contralateral side (CS) groups), and the outcome variables were changes in the MMO at four points. RESULTS We evaluated 21 subjects who had undergone orthognathic surgical procedures. Alterations in the TFH (total facial height), LFH (lower facial height), CS MBL (mandibular body length), and DS RL (ramus length) were negatively correlated with changes in bilateral condylar movement. The UFH, DS MBL and CS ML (mandibular length) showed correlations with infradentale movement. The CS ML, DS ML, MBL, UFH, and SNB were correlated with pogonion movement. CONCLUSION The height of the face is most likely to affect post-operative mandibular movement, and is negatively correlated with movement changes in the condyles, infradentale and pogonion. The changes in CS morphological parameters are more correlated with mandibular movement changes than the DS. The changes in CS MBL and bilateral RL were negatively correlated with condylar movement changes, while the bilateral MBL and CS ML were positively correlated with changes in infradentale and pogonion.
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Chrcanovic BR. Open versus closed reduction: diacapitular fractures of the mandibular condyle. Oral Maxillofac Surg 2012; 16:257-265. [PMID: 22842852 DOI: 10.1007/s10006-012-0337-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Accepted: 07/16/2012] [Indexed: 06/01/2023]
Abstract
PURPOSE The purpose of the study was to review the literature regarding the evolution of current thoughts on management of diacapitular fractures (DFs) of the mandibular condyle. METHODS An electronic search in PubMed was undertaken in March 2012. The titles and abstracts from these results were read to identify studies within the selection criteria. Eligibility criteria included studies reporting clinical series of DFs, including both animal and human studies, without date or language restrictions. RESULTS The search strategy initially yielded 108 references. Twenty-eight studies were identified without repetition within the selection criteria. Additional hand-searching of the reference lists of selected studies yielded three additional papers. CONCLUSIONS The current indications for open reduction and internal fixation (ORIF) of DFs described in the literature are: (a) fractures affecting the lateral condyle with reduction of mandibular height; (b) fractures in which the proximal fragment dislocates laterally out of the glenoid fossa, which cannot be reduced by closed or open treatment of another part of the mandibular fracture. The indications for conservative treatment are: (a) fractures that do not shorten the condylar height (a fracture with displacement of the medial parts of the condyle); (b) undisplaced fractures; (c) comminution of the condylar head, when the bony fragments are too small for stable fixation; and (d) fractures in children. As the temporomandibular joint disk plays an important role as a barrier preventing ankylosis, it is important to reposition the disk (if displaced/dislocated) during the surgical treatment of DFs. The lateral pterygoid muscle should never be stripped from the medially displaced fragment because its desinsertion disrupts circulation to the medial bony fragment, and also because this muscle helps to restore the muscle function after surgery. ORIF of selected DFs improves prognosis by anatomical bone and soft tissue recovery when combined with physical therapy. If conducted properly, surgical treatment of DFs is a safe and predictable procedure and yields good results.
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Linsen SS, Reich RH, Teschke M. Mandibular Kinematics in Patients With Alloplastic Total Temporomandibular Joint Replacement—A Prospective Study. J Oral Maxillofac Surg 2012; 70:2057-64. [DOI: 10.1016/j.joms.2012.05.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 05/20/2012] [Accepted: 05/24/2012] [Indexed: 11/26/2022]
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Mesnard M, Coutant JC, Aoun M, Morlier J, Cid M, Caix P. Relationships between geometry and kinematic characteristics in the temporomandibular joint. Comput Methods Biomech Biomed Engin 2012; 15:393-400. [DOI: 10.1080/10255842.2010.539560] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Correlation between 3-dimensional facial morphology and mandibular movement during maximum mouth opening and closing. ACTA ACUST UNITED AC 2011; 110:648-56. [PMID: 20955952 DOI: 10.1016/j.tripleo.2010.06.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Revised: 06/04/2010] [Accepted: 06/07/2010] [Indexed: 11/21/2022]
Abstract
PURPOSE The purpose of this study was to analyze the relationship between mandibular movement and facial morphology parameters measured using 3-dimensional CT data. MATERIALS AND METHODS We have developed a mandibular movement tracking and simulation system. The mandibular movement data were acquired from 22 subjects (6 males and 16 females), 3 who had no clinical facial deformities and 19 who had orthofacial deformities. The subjects voluntarily performed maximum mouth opening and closing movements. Three-dimensional maximum linear movements of selected points (bilateral condylions, infradentale, and pogonion) were calculated to represent mandibular movement. Facial morphology values were measured 3-dimensionally from CT data and bilateral morphological values were divided into 2 groups according to the mandibular deviation, the deviated side, and counter-deviated side groups. Correlation coefficients were calculated to evaluate the relationship between mandibular movements and facial morphology. RESULTS Maximum linear movements of all selected points on the mandible were positively correlated with sella-nasion-point A (SNA) and sella-nasion-point B (SNB). Movements of the infradentale and pogonion were significantly correlated with ramus inclination, lateral mandibular body angle, ramus length, and mandibular body length. Condylar movement was positively correlated with lateral mandibular body angle and mandibular body length. Multiple stepwise linear regression analysis was performed to evaluate the model predicting the effect of morphological values on mandibular movement. Condylar movement was associated with the SNA (R(2) value = 0.32 for the deviated side, R(2) value = 0.26 for the counter-deviated side), and movement of the infradentale was associated with both SNA and ramus length (R(2) value = 0.57). Movement of the pogonion could be predicted by SNA, mandibular length, and condylar head length (R(2) value = 0.65). CONCLUSION The 3D facial morphology values were associated with variations in mandibular movement, and morphological parameters contributed to predicting the movement of the mandible with different degrees.
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Pinheiro AP, Pereira AA, Andrade AO, Bellomo D. Measurement of jaw motion: the proposal of a simple and accurate method. J Med Eng Technol 2011; 35:125-33. [PMID: 21381873 DOI: 10.3109/03091902.2010.542270] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The analysis of jaw movements has long been used as a measure for clinical diagnosis and assessment. A number of strategies are available for monitoring the trajectory; however most of these strategies make use of expensive tools, which are often not available to many clinics in the world. In this context, this research proposes the development of a new tool capable of quantifying the movements of opening/closing, protrusion and laterotrusion of the mandible. These movements are important for the clinical evaluation of both the temporomandibular function and muscles involved in mastication. The proposed system, unlike current commercial systems, employs a low-cost video camera and a computer program, which is used for reconstructing the trajectory of a reflective marker that is fixed on the jaw. In order to illustrate the application of the devised tool a clinical trial was carried out, investigating jaw movements of 10 subjects. The results obtained in this study were compatible with those found in the literature with the advantage of using a low-cost, simple, non-invasive and flexible solution customized for the practical needs of clinics. The average error of the system was less than 1.0%.
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Affiliation(s)
- A P Pinheiro
- Department of Electrical Engineering, Federal University of University of São João del Rei, São João del Rei, 36.307-352, Brazil.
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Thieme KM, Nägerl H, Hahn W, Ihlow D, Kubein-Meesenburg D. Variations in cyclic mandibular movements during treatment of Class II malocclusions with removable functional appliances. Eur J Orthod 2011; 33:628-35. [PMID: 21262934 DOI: 10.1093/ejo/cjq134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim of the study was to establish whether juveniles with a Class II malocclusion change the neuromuscular control of mandibular movements during the course of orthodontic treatment with removable functional appliances (RFAs). Neuromuscular control can be indirectly evaluated by recording cyclic planar mandibular movements which were freely carried out by the patients (28 girls, 14 boys, aged 11.1 ± 1.1 years at the start of treatment) and measured with an ultrasonic device before, during, and after Class II functional appliance therapy, with either an activator or a bite jumping plate. The cyclic movements represented simultaneous rotations of the mandible around a maxillary and mandibular fixed axis (MFHA) and could be characterized by μ(α)-diagrams (μ = swing angle of MFHA, α = mouth opening angle) and path length (L) of the MFHA. The μ(α)-diagrams clearly divided into four parts: movement representing protrusion, mouth opening, and two parts of backward closing as known from Posselt diagrams. Parameters from the Posselt and μ(α)-diagrams were checked by one-factor analysis of variance on a 5 per cent significance level for group dependency. For one-third of the patients investigated, no significant changes were seen in any parameter pre- or post-therapy. However, patients showing an initially large mouth opening capacity or a very short condylar path changed their neuromuscular control to that of Class I subjects. Analysis of μ(α)-diagrams provides the possibility of assessing changes in the neuromuscular control of the mandible during Class II treatment.
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Affiliation(s)
- Kirsten M Thieme
- Department of Orthodontics, Georg August University Göttingen, Göttingen, Germany.
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The relationship between three-dimensional principal rotations and mandibular deviation. ACTA ACUST UNITED AC 2010; 110:e52-60. [DOI: 10.1016/j.tripleo.2010.07.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Revised: 07/09/2010] [Accepted: 07/15/2010] [Indexed: 11/18/2022]
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Sforza C, Ugolini A, Sozzi D, Galante D, Mapelli A, Bozzetti A. Three-dimensional mandibular motion after closed and open reduction of unilateral mandibular condylar process fractures. J Craniomaxillofac Surg 2010; 39:249-55. [PMID: 20673731 DOI: 10.1016/j.jcms.2010.06.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2009] [Revised: 05/14/2010] [Accepted: 06/10/2010] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVE To detect the changes in 3D mandibular motion after two types of condylar fracture therapies. MATERIALS AND METHODS Using a 3D motion analyzer, free mandibular border movements were recorded in 21 patients successfully treated for unilateral fractures of the mandibular condylar process (nine patients: open reduction, rigid internal fixation, and functional treatment; 12 patients: closed reduction and functional treatment; follow-up: 6-66 months), and in 25 control subjects. RESULTS No differences were found among the groups at maximum mouth opening (MO), protrusion and in lateral excursions. During opening, the patients had a larger maximal deviation to the fractured side than the controls (controls 2.3 mm, open treatment 3.9 mm, closed treatment 4.2 mm; Kruskal-Wallis test, p=0.014; closed treatment vs. controls, p=0.004), with a larger coronal plane angle (controls 2.4°, open treatment 3.6°, closed treatment 4.4°; p=0.016; closed treatment vs. controls, p=0.013). In the closed treatment patients, a longer follow-up was related to increased maximum MO (p=0.04), sagittal plane angle (p=0.03), and reduced lateral mandibular deviation during MO (p=0.03). CONCLUSION Mandibular condylar fractures can recover good function; some kinematic variables of mandibular motion were more similar to the norm in the open treatment patients than in closed treatment patients.
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Affiliation(s)
- Chiarella Sforza
- Functional Anatomy Research Center, Laboratorio di Anatomia Funzionale dell'Apparato Stomatognatico, Dipartimento di Morfologia Umana e Scienze Biomediche Città Studi, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano, via Mangiagalli 31, I-20133 Milano, Italy.
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Tokutomi J, Hayasaki H, Saitoh I, Iwase Y, Fukami A, Yamada C, Takemoto Y, Inada E, Yamasaki Y. Mandibular open-close motion in children with anterior crossbite occlusion. Cranio 2010; 28:10-8. [PMID: 20158005 DOI: 10.1179/crn.2010.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Anterior crossbite (ACB) malocclusions are frequent; however, its characteristic functional features have not been fully described. The purpose of this study was to determine the characteristics of habitual mandibular open-close motion in children with ACB of their primary dentition. Two groups of children were selected for study; 17 with ACB (eight boys and nine girls; four years one month to seven years one month) and 19 with normal occlusion (eight boys and 11 girls; four years six months to six years seven months). The motion was recorded using an optoelectronic analysis system with six degrees-of-freedom. Mandibular incisor and condylar motion were analyzed by measuring their three-dimensional ranges and trajectories. Also estimated incisor and condylar pathways of the two groups were compared. Patients with ACB opened wider with more anterior-posterior condylar translation and more mandibular rotation. Although between-subject (inter-individual) variance of all variables in children with ACB was larger, they had less within-subject variance at the condyles. These results indicate that open-close mandibular motion in children with ACB is completely different from that of children with normal occlusion. The different motions might be related to morphological differences between the two groups.
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Affiliation(s)
- Junko Tokutomi
- Section of Pediatric Dentistry, Division of Oral Health, Growth, and Development, Kagoshima University Graduate School of Medical and Dental Sciences, Japan
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Mandibular kinematics after orthognathic surgical treatment. Br J Oral Maxillofac Surg 2010; 48:110-4. [DOI: 10.1016/j.bjoms.2008.09.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/11/2008] [Indexed: 11/18/2022]
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Fujisawa M. Research projects on jaw function and occlusion published in 2008 by members of the Japan Prosthodontic Society: a review. J Prosthodont Res 2010; 54:55-8. [PMID: 20138818 DOI: 10.1016/j.jpor.2010.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2009] [Accepted: 01/07/2010] [Indexed: 11/18/2022]
Abstract
This article reviews the findings of 5 original papers in the areas of jaw function published in the Journal of the Japan Prosthodontic Society (J Japan Prosthodontic Soc; Nippon Hotetsu Shika Gakkai Zasshi in Medline/PubMed; issued in Volume 52, 2008). A variety of subjects in relation to body movement associated with mandibular movement, parameters for mandibular movement analysis, system evaluation for a new jaw tracking device and obstructive sleep apnea were examined in the listed articles.
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Affiliation(s)
- Masanori Fujisawa
- Division of Fixed Prosthodontics, Department of Restorative and Biomaterials Sciences, School of Dentistry, Meikai University, Sakado, Saitama, Japan.
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