1
|
Jin HW, Noumbissi S, Wiedemann TG. Comparison of Zirconia Implant Surface Modifications for Optimal Osseointegration. J Funct Biomater 2024; 15:91. [PMID: 38667548 PMCID: PMC11051113 DOI: 10.3390/jfb15040091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 03/26/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
Zirconia ceramic implants are commercially available from a rapidly growing number of manufacturers. Macroscopic and microscopic surface design and characteristics are considered to be key determining factors in the success of the osseointegration process. It is, therefore, crucial to assess which surface modification promotes the most favorable biological response. The purpose of this study was to conduct a comparison of modern surface modifications that are featured in the most common commercially available zirconia ceramic implant systems. A review of the currently available literature on zirconia implant surface topography and the associated bio-physical factors was conducted, with a focus on the osseointegration of zirconia surfaces. After a review of the selected articles for this study, commercially available zirconia implant surfaces were all modified using subtractive protocols. Commercially available ceramic implant surfaces were modified or enhanced using sandblasting, acid etching, laser etching, or combinations of the aforementioned. From our literature review, laser-modified surfaces emerged as the ones with the highest surface roughness and bone-implant contact (BIC). It was also found that surface roughness could be controlled to achieve optimal roughness by modifying the laser output power during manufacturing. Furthermore, laser surface modification induced a very low amount of preload microcracks in the zirconia. Osteopontin (OPN), an early-late osteogenic differentiation marker, was significantly upregulated in laser-treated surfaces. Moreover, surface wettability was highest in laser-treated surfaces, indicating favorable hydrophilicity and thus promoting early bone forming, cell adhesion, and subsequent maturation. Sandblasting followed by laser modification and sandblasting followed by acid etching and post-milling heat treatment (SE-H) surfaces featured comparable results, with favorable biological responses around zirconia implants.
Collapse
Affiliation(s)
- Hyun Woo Jin
- BA/DDS Joint Program, College of Dentistry, New York University, New York, NY 10010, USA
| | - Sammy Noumbissi
- Department of Oral and Maxillofacial Implantology, University of Milan, 20122 Milano, Italy
- Post-Graduate Program Oral Surgery, University of Chieti-Pescara, 65127 Pescara, Italy
- Department of Biomaterials INSA Lyon, 69100 Villeurbanne, France
- Private Practice, Silver Spring, MD 20910, USA
| | - Thomas G. Wiedemann
- Department of Oral and Maxillofacial Surgery, College of Dentistry, New York University, New York, NY 10010, USA
| |
Collapse
|
2
|
Zhan X, Yan J, Xiang D, Tang H, Cao L, Zheng Y, Lin H, Xia D. Near-infrared light responsive gold nanoparticles coating endows polyetheretherketone with enhanced osseointegration and antibacterial properties. Mater Today Bio 2024; 25:100982. [PMID: 38371468 PMCID: PMC10869918 DOI: 10.1016/j.mtbio.2024.100982] [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: 11/12/2023] [Revised: 01/16/2024] [Accepted: 01/25/2024] [Indexed: 02/20/2024] Open
Abstract
Polyetheretherketone (PEEK) is considered as a promising dental implant material owing to its excellent physicochemical and mechanical properties. However, its wide range of applications is limited by its biologically inert nature. In this study, a near-infrared (NIR) light responsive bioactive coating with gold nanoparticles (AuNPs) and metronidazole adhered to the PEEK surface via dopamine polymerization. Compared to pure PEEK, the hydrophilicity of the treated PEEK surface was significantly improved. In addition, under NIR light, the surface coating exhibited photothermal conversion effect, and gold nanoparticles and the antibiotic can be released from the coating. This improved the antibacterial properties of PEEK materials. Moreover, the coating was more conducive to the early adhesion of bone mesenchymal stem cells. The results of in vitro and in vivo osteogenic activity studies showed that the developed coating promoted osseointegration of PEEK implants, and NIR light irradiation further improved the antibacterial ability and osteogenic activity of PEEK implants. Through RNA sequencing, the potential underlying mechanism of promoting bone formation of the AuNPs coating combined metronidazole was interpreted. In summary, the developed coating is a potential surface treatment strategy that endows PEEK with enhanced osseointegration and antibacterial properties.
Collapse
Affiliation(s)
- Xinxin Zhan
- Department of Dental Materials, 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, 100081, China
| | - Jianglong Yan
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, 60611, USA
| | - Dong Xiang
- Department of Dental Materials, 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, 100081, China
| | - Hao Tang
- Department of Dental Materials, 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, 100081, China
| | - Lulu Cao
- Department of Dental Materials, 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, 100081, China
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Hong Lin
- Department of Dental Materials, 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, 100081, China
| | - Dandan Xia
- Department of Dental Materials, 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, 100081, China
| |
Collapse
|
3
|
Wu HC, Huang HL, Fuh LJ, Tsai MT, Hsu JT. Influence of implant length and insertion depth on primary stability of short dental implants: An in vitro study of a novel mandibular artificial bone model. J Dent Sci 2024; 19:139-147. [PMID: 38303865 PMCID: PMC10829676 DOI: 10.1016/j.jds.2023.05.019] [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: 05/04/2023] [Revised: 05/16/2023] [Indexed: 02/03/2024] Open
Abstract
Background/purpose Dental implants are a mainstream solution for missing teeth. For the improvement of dental implant surface treatment and design, short dental implants have become an alternative to various complex bone augmentation procedures, especially those performed at the posterior region of both the maxilla and mandible. The objective of this study was to evaluate the effect of various insertion methods on the primary stability of short dental implants. Materials and methods Commercial dental implants were inserted into artificial mandibular bone specimens using various insertion methods (equicrestal position, subcrestal position 1.5 mm, and lateral cortical anchorage) in accordance with an implant surgical guide. Insertion torque value (ITV) curves were recorded while implant procedures were performed. Both maximum ITVs (MITVs) and final ITVs (FITVs) were evaluated. Subsequently, Periotest values (PTVs) and implant stability quotients (ISQs) were measured for all specimens. A Kruskal-Wallis test was conducted to analyze the results for four primary stability parameters, and the Dunn test was used for a post hoc pairwise comparison when a difference was identified. Results For all groups, their mean MITVs ranged from 33.6 to 59.4 N cm, whereas their mean FITVs ranged from 17.5 to 43.5 N cm. Insertion torque value, ISQ, and PTV decreased significantly when implants were inserted into subcrestal positions. When implants were inserted in the lateral bicortical position, the four aforementioned parameters yielded greater values. Conclusion When 6-mm short implants were inserted in a lateral cortical anchorage position, high primary stability was yielded.
Collapse
Affiliation(s)
- Hsiang-Chun Wu
- School of Dentistry, China Medical University, Taichung, Taiwan
| | - Heng-Li Huang
- School of Dentistry, China Medical University, Taichung, Taiwan
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan
- Department of Biomedical Engineering, China Medical University, Taichung, Taiwan
| | - Lih-Jyh Fuh
- School of Dentistry, China Medical University, Taichung, Taiwan
- Department of Dentistry, China Medical University and Hospital, Taichung, Taiwan
| | - Ming-Tzu Tsai
- Department of Biomedical Engineering, Hungkuang University, Taichung, Taiwan
| | - Jui-Ting Hsu
- School of Dentistry, China Medical University, Taichung, Taiwan
- Department of Biomedical Engineering, China Medical University, Taichung, Taiwan
| |
Collapse
|
4
|
Potapchuk A, Almashi V, Onipko Y, Hegedűs C. The influence of immediate intraoperative loading with a splinting component on supporting tissues during a one-stage implant. WIADOMOSCI LEKARSKIE (WARSAW, POLAND : 1960) 2024; 77:462-471. [PMID: 38691788 DOI: 10.36740/wlek202403114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
OBJECTIVE Aim: To study the specifics of the impact of immediate intraoperative loading with a splinting component on supporting tissues during a one-stage implantation protocol. PATIENTS AND METHODS Materials and Methods: In the course of the study, orthopedic treatment was carried out for 55 patients aged 29 to 60 years. The following were performed: cone-beam computed tomography, software planning and intraoral scanning with an optical scanner, one-stage implantation protocol, assessment of implant stability with the Osstell ISQ device, microcirculation study in the peri-implant area using laser Doppler flowmetry (LDF). RESULTS Results: It was established that around loaded implants there is an increase in blood flow and vasomotor activity of the microcirculatory channel of the supporting tissues, an increase in the volume of bone tissue and an increase in torque, which is the optimal forecast for the acceleration of the pace of osseointegration. CONCLUSION Conclusions: The use of a splinting component during immediate intraoperative functional masticatory load accelerates the dynamics of bone tissue remodeling processes around the implant, which is an optimal prediction of osseointegration rates in various dental implantation protocols and is consistent with high values of the implant stability coefficient.
Collapse
|
5
|
Fischer JP, Schleifenbaum S, Gelberg F, Barth T, Wendler T, Löffler S. Novel approach to assessing the primary stability of dental implants under functional cyclic loading in vitro: a biomechanical pilot study using synthetic bone. J Periodontal Implant Sci 2023; 53:53.e48. [PMID: 37857518 DOI: 10.5051/jpis.2301780089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/12/2023] [Accepted: 07/31/2023] [Indexed: 10/21/2023] Open
Abstract
PURPOSE This pilot study was conducted to develop a novel test setup for the in vitro assessment of the primary stability of dental implants. This was achieved by characterising their long-term behaviour based on the continuous recording of micromotions resulting from dynamic and cyclic loading. METHODS Twenty screw implants, each 11 mm in length and either 3.8 mm (for premolars) or 4.3 mm (for molars) in diameter, were inserted into the posterior region of 5 synthetic mandibular models. Physiological masticatory loads were simulated by superimposing cyclic buccal-lingual movement of the mandible with a vertically applied masticatory force. Using an optical 3-dimensional (3D) measuring system, the micromotions of the dental crowns relative to the alveolar bone resulting from alternating off-centre loads were concurrently determined over 10,000 test cycles. RESULTS The buccal-lingual deflections of the dental crowns significantly increased from cycle 10 to cycle 10,000 (P<0.05). The deflections increased sharply during the first 500 cycles before approaching a plateau. Premolars exhibited greater maximum deflections than molars. The bone regions located mesially and distally adjacent to the loaded implants demonstrated deflections that occurred synchronously and in the same direction as the applied loads. The overall spatial movement of the implants over time followed an hourglass-shaped loosening pattern with a characteristic pivot point 5.5±1.1 mm from the apical end. CONCLUSIONS In synthetic mandibular models, the cyclic reciprocal loading of dental implants with an average masticatory force produces significant loosening. The evasive movements observed in the alveolar bone suggest that its anatomy and yielding could significantly influence the force distribution and, consequently, the mechanical behaviour of dental implants. The 3D visualisation of the overall implant movement under functional cyclic loading complements known methods and can contribute to the development of implant designs and surgical techniques by providing a more profound understanding of dynamic bone-implant interactions.
Collapse
Affiliation(s)
- Jean-Pierre Fischer
- ZESBO - Center for Research on Musculoskeletal Systems, Leipzig University, Leipzig, Germany
- Department of Orthopaedic, Trauma and Plastic Surgery, Leipzig University, Leipzig, Germany.
| | - Stefan Schleifenbaum
- ZESBO - Center for Research on Musculoskeletal Systems, Leipzig University, Leipzig, Germany
- Department of Orthopaedic, Trauma and Plastic Surgery, Leipzig University, Leipzig, Germany
| | | | - Thomas Barth
- DENTALE - Dental Competence Center Leipzig GmbH, Leipzig, Germany
| | - Toni Wendler
- ZESBO - Center for Research on Musculoskeletal Systems, Leipzig University, Leipzig, Germany
- Department of Orthopaedic, Trauma and Plastic Surgery, Leipzig University, Leipzig, Germany
| | - Sabine Löffler
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| |
Collapse
|
6
|
Qi M, Deng S, Tan Z. Clinical study to assess influence of immediate provisionalization and various implant morphologies on implant stability: A prospective clinical study. Front Surg 2023; 9:1095741. [PMID: 36684336 PMCID: PMC9852988 DOI: 10.3389/fsurg.2022.1095741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 11/21/2022] [Indexed: 01/07/2023] Open
Abstract
Introduction The aim of this study was to evaluate the influence of different implant morphologies and immediate provisionalization options on the change of implant stability. Methods 94 Patients were randomized to receive implants from Straumann® BL/Straumann® BLT/Astra OsseoSpeed® TX, meanwhile having the same opportunity to receive healing abutment or immediate provisionalization. Implant stability quotient (ISQ) and marginal bone loss (MBL) were recorded at following timepoints. Parametric statistic was used for data analysis. Results Data showed that ISQ and MBL values of conical/straight/straight with micro-thread neck implants had no significant difference. Discussion Immediate provisionalization options could move the dip point of ISQ values ahead or delayed around one week, which were also relevant to implant systems. MBL values were proved to be unaffected by both two factors mentioned above.
Collapse
Affiliation(s)
- Meiyao Qi
- State Key Laboratory of Oral Diseases, National Clinical Research Center of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shiyong Deng
- State Key Laboratory of Oral Diseases, National Clinical Research Center of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhen Tan
- State Key Laboratory of Oral Diseases, National Clinical Research Center of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China,Correspondence: Zhen Tan
| |
Collapse
|
7
|
Nimmawitt P, Aliyu AAA, Lohwongwatana B, Arunjaroensuk S, Puncreobutr C, Mattheos N, Pimkhaokham A. Understanding the Stress Distribution on Anatomic Customized Root-Analog Dental Implant at Bone-Implant Interface for Different Bone Densities. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6379. [PMID: 36143689 PMCID: PMC9506153 DOI: 10.3390/ma15186379] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 08/29/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
The aim of this study is to assess the stress distribution on the bone tissue and bone-implant interface of a customized anatomic root-analog dental implant (RAI) by means of finite element analysis (FEA) for different types of bone density. A mandibular right second premolar was selected from the CBCT database. A DICOM file was converted to an STL file to create a CAD model in FEA software. The bone boundary model was created, while bone density types I-IV were determined. Von Mises stress was measured at bone tissues and bone-implant interfaces. To validate the models, the RAI was 3D printed through a laser powder-bed fusion (L-PBF) approach. The results revealed that all RAI designs could not cause plastic deformation or fracture resulting in lower stress than the ultimate tensile stress of natural bone and implant. Compared to a conventional screw-type implant, RAIs possess a more favorable stress distribution pattern around the bone tissue and the bone-implant interface. The presence of a porous structure was found to reduce the stress at cancellous bone in type IV bone density.
Collapse
Affiliation(s)
- Pawhat Nimmawitt
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Abdul Azeez Abdu Aliyu
- Biomedical Engineering Research Center, Chulalongkorn University, Bangkok 10330, Thailand
| | - Boonrat Lohwongwatana
- Biomedical Engineering Research Center, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sirida Arunjaroensuk
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chedtha Puncreobutr
- Biomedical Engineering Research Center, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nikos Mattheos
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Dental Medicine, Karolinska Institute, SE-171 77 Stockholm, Sweden
| | - Atiphan Pimkhaokham
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| |
Collapse
|
8
|
Primary Stability of Conventionally Tapered Versus Reverse Tapered Body Shift Implants Under Varying Bone Support Conditions—An In-Vitro Study. J Med Biol Eng 2022. [DOI: 10.1007/s40846-022-00736-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
9
|
AK B, Eroğlu EG, Ertugrul AS, Öztürk AB, Yılmaz ŞN. Non-Destructive Removal of Dental Implant by Using the Cryogenic Method. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58070849. [PMID: 35888569 PMCID: PMC9319264 DOI: 10.3390/medicina58070849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/15/2022] [Accepted: 06/22/2022] [Indexed: 11/26/2022]
Abstract
Background and Objectives: The gold standard for a successful prosthetic approach is the osseointegration of an implant. However, this integration can be a problem in cases where the implant needs to be removed. Removing the implant with minimal damage to the surrounding tissues is important. Osteocytes cannot survive below −2 °C, but epithelial cells, fibroblasts, and other surrounding tissue cells can. Remodeling can be triggered by cryotherapy at temperatures that specifically affect osteocyte necrosis. In this study, we aimed to develop a method for reversing the osseointegration mechanism and for protecting the surrounding tissues by bone remodeling induced by CO2 cryotherapy. Materials and Methods: In this study, eight 2.8 mm diameter, one-piece mini implants were used in New Zealand rabbit tibias. Two control and six implants were tested in this study. After 2 months of osseointegration, a reverse torque force method was used to remove all osseointegrated implants at 5, 10, 20, and 30 Ncm. The osseointegration of the implants was proven by periotest measurements. Changes in bone tissue were examined in histological sections stained with toluidine blue after rabbit sacrifice. The number of lacunae with osteocyte, empty lacunae, and lacunae greater than 5 µm and the osteon number in a 10,000 µm2 area were calculated. Cryotherapy was applied to the test implants for 1 min, 2 min, and 5 min. Three implants were subjected to cryotherapy at −40 °C, and the other implants were subjected to cryotherapy at −80 °C. Results: Empty lacunae, filled osteocytes, lacunae >5 µm, and the osteon count around the implant applied at −40 °C were not significantly different from the control implants. The application of −40 °C for 1 min was found to cause minimal damage to the bone cells. The implants, which were applied for 1 min and 2 min, were successfully explanted on the 2nd day with the 5 Ncm reverse torque method. Test implants, which were applied cold for 5 min, were explanted on day 1. Tissue damage was detected in all test groups at −80 °C. Conclusions: The method of removing implants with cryotherapy was found to be successful in −40 °C freeze−thaw cycles applied three times for 1 min. To prove implant removal with cryotherapy, more implant trials should be conducted.
Collapse
Affiliation(s)
- Burak AK
- Periodontology Department, Faculty of Dentistry, Mersin University, 33343 Mersin, Turkey
- Correspondence:
| | - Emre Gürkan Eroğlu
- Periodontology Department, Faculty of Dentistry, Izmir Katip Çelebi University, 35620 Izmir, Turkey; (E.G.E.); (A.S.E.)
| | - Abdullah Seckin Ertugrul
- Periodontology Department, Faculty of Dentistry, Izmir Katip Çelebi University, 35620 Izmir, Turkey; (E.G.E.); (A.S.E.)
| | - Ayla Batu Öztürk
- Department of Histology and Embryology, School of Medicine, Mersin University, 33343 Mersin, Turkey; (A.B.Ö.); (Ş.N.Y.)
| | - Şakir Necat Yılmaz
- Department of Histology and Embryology, School of Medicine, Mersin University, 33343 Mersin, Turkey; (A.B.Ö.); (Ş.N.Y.)
| |
Collapse
|
10
|
Abstract
The objective of this study was to evaluate the effect of bone–miniscrew contact percentage (BMC%) and bone quality and quantity on orthodontic miniscrew stability and the maximum insertion torque value (ITV). Orthodontic miniscrews of five different dimensions and several bovine iliac bone specimens were used in the evaluation. Miniscrews of each dimension group were inserted into 20 positions in bovine iliac bone specimens. The experiment was divided into three parts: (1) Bone quality and quantity were evaluated using cone-beam computed tomography (CBCT) and microcomputed tomography. (2) The 3D BMC% was calculated. (3) The ITVs during miniscrew insertion were recorded to evaluate the stability of the orthodontic miniscrews. The results indicated that longer and thicker miniscrews enabled higher ITVs. CBCT was used to accurately measure cortical bone thickness (r = 0.939, P < 0.05) and to predict the bone volume fraction of cancellous bone (r = 0.752, P < 0.05). BMC% was significantly influenced by miniscrew length. The contribution of cortical bone thickness to the ITV is greater than that of cancellous bone structure, and the contribution of cortical bone thickness to BMC% is greater than that of cancellous bone structure. Finally, the higher is BMC%, the greater is the ITV. This study concludes that use of CBCT may predict the mechanical stability of orthodontic miniscrews.
Collapse
|
11
|
TAKARABE Y, TO M, HOSHI N, HAYAKAWA T, OHKUBO C, MIURA H, KIMOTO K, MATSUO M. Application of multi-directionally forged high-strength titanium to dental implants in beagle dogs. Dent Mater J 2022; 41:459-465. [DOI: 10.4012/dmj.2021-276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yusuke TAKARABE
- Department of Fixed Prosthodontics, Kanagawa Dental University
| | - Masahiro TO
- Department of Clinical Oral Anatomy, Kanagawa Dental University
| | - Noriyuki HOSHI
- Department of Fixed Prosthodontics, Kanagawa Dental University
| | - Tohru HAYAKAWA
- Department of Dental Engineering, Tsurumi University School of Dental Medicine
| | - Chikahiro OHKUBO
- Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine
| | - Hiromi MIURA
- Department of Mechanical Engineering, Toyohashi University of Technology
| | | | - Masato MATSUO
- Department of Clinical Oral Anatomy, Kanagawa Dental University
| |
Collapse
|
12
|
Jalaluddin M, Sathe S, Thomas J, Haleem S, Naik S, Shivanna MM. Assessment of Implant Stability in Immediate Implant Placement using Different Bone Grafting materials: A Clinical Study. J Pharm Bioallied Sci 2021; 13:S612-S615. [PMID: 34447164 PMCID: PMC8375779 DOI: 10.4103/jpbs.jpbs_627_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/19/2020] [Accepted: 11/24/2020] [Indexed: 11/14/2022] Open
Abstract
Aim: The aim of the present study was to assess the implant stability in immediate implant placement using different bone grafting materials. Materials and Methods: Twelve patients (5 males, 7 females, range of 40–58 years) were included in the study. All patients were divided into two groups based on the graft material used. For Group 1, Xenograft bone grafting material was used, and for Group 2, Freeze-dried bone allograft was used. The patients were suggested to rinse with 0.2% chlorhexidine mouth wash for 1 min. Periotome was used for atraumatic tooth extraction, and necessary care was taken to avoid fracture of socket wall. The implant was placed with respective bone grafting materials. An Orthopantomogram (OPG) radiograph is taken at the day of the operation to serve as baseline data for the marginal bone level. Clinical and radiological parameters were evaluated at baseline, 3 months, 6 months, and 12 months to assess the mean marginal bone level changes. Periotest was used for the measurement of implant stability. Results: The mean marginal bone level in Group 1 at baseline (13.58 ± 1.09), 3 months (12.64 ± 0.88), 6 months (12.02 ± 1.42), and 12 months (11.20 ± 1.26), respectively. In Group 2, the marginal bone level was at baseline (14.22 ± 0.26), 3 months (13.52 ± 1.28), 6 months (13.10 ± 0.32), and 12 months (12.12 ± 1.26), respectively. There was a statistically significant difference found in both the groups. Moreover, there was no statistically significant differences found between the groups at all the duration on intergroup comparison of the mean marginal bone level. The mean difference of implant stability in Group 1 the implant stability was 188.6 ± 22.5 and in Group 2 was 191.5 ± 18.2, and there was no statistically significant difference found between the groups. Conclusion: Both bone grafting materials used in the study showed improvement in implant stability and marginal bone levels after immediate placement of implant.
Collapse
Affiliation(s)
- Mohammad Jalaluddin
- Department of Periodontics and Oral Implantology, Kalinga Institute of Dental Sciences, KIIT Deemed to be University, Bhubaneswar, Odisha, India
| | - Saurabh Sathe
- Department of Oral and Maxillofacial Surgery, Bhabha College of Dental Sciences, Bhopal, Madhya Pradesh, India
| | - Joyce Thomas
- Department of Prosthodontics, Al Azhar Dental College, Thodupuzha, Kerala, India
| | - Shaista Haleem
- Dental Health Care Department, Inaya Medical College, Riyadh, Saudi Arabia
| | - Sachin Naik
- Dental Biomaterials Research Chair, Dental Health Department, College of Applied Medical Sciences, King Saud University, Riyadh 1143, Saudi Arabia.,Public Health Department, Texila American University, South America, Guyana
| | | |
Collapse
|
13
|
Zhou T, Wongpairojpanich J, Sareethammanuwat M, Lilakhunakon C, Buranawat B. Digital occlusal analysis of pre and post single posterior implant restoration delivery: A pilot study. PLoS One 2021; 16:e0252191. [PMID: 34214089 PMCID: PMC8253389 DOI: 10.1371/journal.pone.0252191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 04/09/2021] [Indexed: 11/18/2022] Open
Abstract
Objectives The purposes of this study were to analyze the effects of single posterior implant restorations delivery on the redistribution of bite force and to evaluate the changes in occlusal force distribution of prostheses and potential influencing factors on occlusion variation at different stages. Materials and methods Thirty-two single posterior restorations in 30 participants (18 women and 12 men aged 27 to 75 years) were placed into either a unilateral single-tooth defect (n = 17) or on either side of a bilateral teeth defects (n = 15). The bite force (%) of the prostheses, teeth and segments at the maximum intercuspation position (MIP) was evaluated using a T-scan at 5 stages (pre-placement, immediately following placement, and 2 weeks, 3 months, and 6 months post-placement). Results The occlusal force of implant-supported prostheses was significantly (P = .000) lower than those of the control natural teeth at the baseline, then no significant difference was found with that of the mesial teeth at 3 months, and finally it was significantly (P = .000) lower than that of the distal teeth at 6 months; meanwhile, it significantly (P = .008) increased by a mean of 2.04 times from 2 weeks (3.39 ± 2.61%) to 3 months (6.90 ± 4.77%), whereas no significant difference (P = .900) was found from 3 months (6.90 ± 4.77%) to 6 months (7.31 ± 4.60%). In addition, the bite force of the posterior segment on the restored side of both unilateral and bilateral gaps was significantly (P = .013,.001) improved by 3.31% and 6.83%, respectively, although the discrepancy in bite force significantly (P = .039) increased from an initial 3.52% to 5.02% for subjects with bilateral defects, accompanying increases in the proportion (15.38%) of the level III bilateral bite force deviation (P >.05). Conclusions Bite force and masticatory ability can be improved with the immediate delivery of a single posterior implant restoration. The bite force distributed on the implant prosthesis inevitably increases after placement of implant prostheses, a routine follow-up and occlusal evaluation are strongly needed.
Collapse
Affiliation(s)
- Ting Zhou
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
- Department of Orthodontics, School of Stomatology, Kunming Medical University, Yunnan, China
| | - Jirapa Wongpairojpanich
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
| | - Maytha Sareethammanuwat
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
| | - Charukrit Lilakhunakon
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
| | - Borvornwut Buranawat
- Department of Periodontics & Implant Dentistry, Faculty of Dentistry, Thammasat University, Phatum Thani, Thailand
- * E-mail:
| |
Collapse
|
14
|
Lorusso F, Conte R, Inchingolo F, Festa F, Scarano A. Survival Rate of Zygomatic Implants for Fixed Oral Maxillary Rehabilitations: A Systematic Review and Meta-Analysis Comparing Outcomes between Zygomatic and Regular Implants. Dent J (Basel) 2021; 9:dj9040038. [PMID: 33915748 PMCID: PMC8065623 DOI: 10.3390/dj9040038] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 12/15/2022] Open
Abstract
Background: Zygomatic implants have been proposed alone or in combination with premaxillary conventional implants for severe resorbed maxillary atrophy rehabilitation. The aim of the present investigation was to evaluate through a qualitative systematic review and meta-analysis the survival rate of zygomatic implants in conjunction with regular fixtures for maxillary rehabilitation. Methods: The article screening was conducted on the PubMed/Medline and EMBASE electronic databases according to the “Preferred Reporting Items for Systematic Reviews and Meta-Analyses” (PRISMA) guidelines. The scientific papers were included for qualitative analysis and risk-of-bias evaluation. Only the papers that included rehabilitation with zygomatic implants in combination with regular implants were considered for the meta-analysis comparative evaluation of the implant survival rate. Results: The paper search screened a total of 137 papers. After the initial screening, a total of 32 articles were considered for the qualitative analysis. There was a similar implant survival rate between zygomatic and premaxilla regular implants (p = 0.02; Z: 2.26). Conclusions: Zygomatic and conventional implants showed a high long-term survival rate for fixed maxillary rehabilitations, but few included studies reported the marginal bone loss after loading. Further studies are necessary to evaluate the pattern of marginal bone loss between zygomatic and conventional implants after long-term functional loading.
Collapse
Affiliation(s)
- Felice Lorusso
- Department of Innovative Technologies in Medicine & Dentistry and CAST, University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy; (F.L.); (F.F.)
| | | | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70121 Bari, Italy;
| | - Felice Festa
- Department of Innovative Technologies in Medicine & Dentistry and CAST, University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy; (F.L.); (F.F.)
| | - Antonio Scarano
- Department of Innovative Technologies in Medicine & Dentistry and CAST, University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy; (F.L.); (F.F.)
- Correspondence: ; Tel.: +39-0871-355-4084; Fax: +39-0871-355-4099
| |
Collapse
|
15
|
Semez G, Cescato A, Luca RE, Tonetti L, Todea DC. A Comparative Analysis Regarding the Osseointegration of Immediate Loaded Implants Using Two Different Implant Site Preparations: Erbium:Yttrium-Aluminum-Garnet Laser Versus Surgical Conventional Way-An In Vivo and Histological Animal Study. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2020; 39:70-80. [PMID: 33332212 DOI: 10.1089/photob.2020.4889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Objective: The aim of the study is to evaluate the possibility of preparing the implant site using the erbium:yttrium-aluminum-garnet (Er:YAG) laser scanner prototype and to reduce and/or eliminate time between primary (mechanical) stability and secondary (biological) stability, looking to the immediate occlusal loading in a single implant. Background: A prerequisite for successful osseointegration is the establishment of direct bone-to-implant contact without interposition of nonbone or connective tissue. In recent years, the use of laser radiation was presented as an alternative/adjunctive treatment for bone tissue ablation due to vaporization of the tissues in the absence of a smear layer. Methods: The experimental protocol included six minipigs, which underwent tooth extraction, followed (after 2 months) by implant bed preparation in two methods: using a conventional bur kit and using an Er:YAG laser scanner (X runner) protocol. Four implants were placed in positions 34, 37, 44, and 47 on each animal. The animals underwent the second surgical procedure for bone sample collection (including the implant) before their sacrifice at 45-60-90-120 days. The newly formed bone was evaluated on the bone samples using histological examination and quantitative evaluations of different histological parameters based on microscopical analysis. Results: The results that we obtained allow some interesting comparison in terms of different bone composition, depending on the method of implant site preparation and on healing periods. Moreover, it was possible to compare the bone composition, at different time stages, of implant sites prepared in the same way. Conclusions: Our research allowed us to demonstrate that the use of Er:YAG laser compared with traditional drill leads to the presence of a greater share of lamellar bone and a lower necrotic share in the implant site. We also showed the possibility of applying immediate occlusal loading on an in vivo animal model.
Collapse
Affiliation(s)
- Gianfranco Semez
- Department of Oral Rehabilitation and Dental Emergencies, School of Dental Medicine, "Victor Babeş" University of Medicine and Pharmacy, Timisoara, Romania.,Semez SRL Private Practice, Trieste, Italy
| | | | - Ruxandra Elena Luca
- Department of Oral Rehabilitation and Dental Emergencies, School of Dental Medicine, "Victor Babeş" University of Medicine and Pharmacy, Timisoara, Romania
| | - Luca Tonetti
- Department of Oral Rehabilitation and Dental Emergencies, School of Dental Medicine, "Victor Babeş" University of Medicine and Pharmacy, Timisoara, Romania.,Tiemme-Dental SRL, Udine, Italy
| | - Darinca Carmen Todea
- Department of Oral Rehabilitation and Dental Emergencies, School of Dental Medicine, "Victor Babeş" University of Medicine and Pharmacy, Timisoara, Romania
| |
Collapse
|
16
|
Zhang X, Mao J, Zhou Y, Ji F, Chen X. Mechanical properties and osteoblast proliferation of complex porous dental implants filled with magnesium alloy based on 3D printing. J Biomater Appl 2020; 35:1275-1283. [PMID: 32915665 DOI: 10.1177/0885328220957902] [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] [Indexed: 11/16/2022]
Abstract
In this paper, a complex porous dental implant with biodegradable magnesium alloy was designed based on selective laser melting (SLM). Finite element analysis (FEA) was used to simulate the stress distribution of dental implant and alveolar bone in two models of preliminary and later stages of implant. The stress concentration area of dental implants was found not in the porous structure, and the weak part of mechanical properties accords with the work requirements. The porous structure of dental implants can promote the function of cancellous bone in the process of conducting the stress of the dental implant, thus improving the bearing capacity of dental implants. In vitro fatigue experiments were carried out on the experimental samples produced by 3D printing. Through the cell contrast experiment, it was proved that the decomposed Mg2+ could reach the titanium surface smoothly through the porous structure and complete the proliferation of osteoblasts.
Collapse
Affiliation(s)
- Xuetao Zhang
- School of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai, China
| | - Jian Mao
- School of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai, China
| | - Yufeng Zhou
- School of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai, China
| | - Fangqiu Ji
- Guangzhou Janus Biotechnology Co. Ltd, Guangzhou, China
| | | |
Collapse
|
17
|
Arosio P, Arosio F, Di Stefano DA. Implant Diameter, Length, and the Insertion Torque/Depth Integral: A Study Using Polyurethane Foam Blocks. Dent J (Basel) 2020; 8:dj8020056. [PMID: 32512762 PMCID: PMC7345030 DOI: 10.3390/dj8020056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/21/2020] [Accepted: 05/29/2020] [Indexed: 12/12/2022] Open
Abstract
The amount of energy necessary to place an implant in its seat, described as the integral of the torque-depth curve at insertion (I), has been validated as a reliable measure of primary stability. This study aimed to investigate whether (I) may detect the variations in primary stability caused by changes in the implant length or diameter better than the insertion torque (IT). Cylindric implants featuring a double-etched, sandblasted surface with different diameters or lengths were placed into monolithic polyurethane foam blocks with different densities that mimicked human bone. (I)-, (I)*-, IT-, IT*-diameter and -length plots ((I)* and IT* were the derived values corrected for undersizing) were drawn and the relation between (I), (I)*, IT, and IT* and the fixture diameter or length was investigated with correlation analysis. (I)* and IT* correlated better than (I) and IT with the fixture diameter; (I), (I)*, IT, and IT* correlated equally well with the fixture length. In all cases, the slopes of the lines best fitting the experimental data were greater for (I) or (I)* than IT or IT*, respectively. (I) or (I)* were better detectors than IT or IT* of the changes in primary stability that can be achieved by increasing the fixture diameter or length.
Collapse
Affiliation(s)
- Paolo Arosio
- Private Practitioner, Vimercate, 20871 Monza-Brianza, Italy;
| | | | - Danilo Alessio Di Stefano
- Adjunct Professor, Dental School, Vita-Salute University IRCCS San Raffaele, 20132 Milan, Italy
- Private Practitioner, 20148 Milan, Italy
- Correspondence: ; Tel.: +39-02-48705703
| |
Collapse
|
18
|
Li H, Sun T, Liu C, Cao Y, Liu X. Photobiomodulation (450 nm) alters the infection of periodontitis bacteria via the ROS/MAPK/mTOR signaling pathway. Free Radic Biol Med 2020; 152:838-853. [PMID: 32014500 DOI: 10.1016/j.freeradbiomed.2020.01.184] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/28/2020] [Accepted: 01/28/2020] [Indexed: 12/22/2022]
Abstract
We aimed to investigate the effects of photobiomodulation (PBM) on periodontitis. A periodontitis model was established via Porphyromonas gingivalis infection in beagles. Mandibular second and third premolars were removed, and implants were positioned immediately after tooth extraction. Left gingiva was irradiated with PBM (450 nm) as the LG group, and right side without irradiation was regarded as the CG (control) group. PBM treatment increased oxidative stress by increasing the levels of reactive oxygen species (ROS) and reactive nitrogen species (RNS). The elevated levels of H2O2 (a biomarker of oxidative stress) and the free radicals (NO• and O2•-) reduced the concentration of dominant pathogens and regulated ROS/RNS/AMP-activated protein kinase (AMPK)/mTOR pathway by affecting p-AMPK, Runt-related transcription factor 2 (RUNX2), p-c-Jun N-terminal kinase (JNK)/mammalian target of rapamycin (mTOR), and acetyl-CoA carboxylase 1 (ACC1). PBM therapy increased salivary levels of interleukin-1 receptor antagonist (IL-1ra), interleukin (IL)-10, total antioxidant capacity (TAC) and catalase (CAT), and reduced the levels of tumor necrosis factor (TNF)α and interleukin (IL)-1β, malondialdehyde (MDA) and 8-hydroxydeoxyguanosine (8-OHdG) (p < 0.05). All the results contributed to preventing periodontitis infection. PBM therapy improved bone mineral density and implant osseointegration by controlling dominant pathogens invasion via the upregulation of salivary anti-inflammatory and antioxidant defense by affecting ROS/RNS/AMPK/mTOR signaling pathway.
Collapse
Affiliation(s)
- Hui Li
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Tong Sun
- Department of Breast Surgery, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Cong Liu
- Department of Stomatology, Taian City Central Hospital, Taian, 271000, Shandong, China
| | - Yan Cao
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China
| | - Xin Liu
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China.
| |
Collapse
|
19
|
Christiaens V, Pitman J, Glibert M, Hommez G, Atashkadeh M, De Bruyn H. Rationale for a reverse tapered body shift implant for immediate placement. Int J Oral Maxillofac Surg 2020; 49:1630-1636. [PMID: 32371178 DOI: 10.1016/j.ijom.2020.04.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 02/18/2020] [Accepted: 04/09/2020] [Indexed: 11/24/2022]
Abstract
Immediate implant placement holds considerable value, yet primary implant stability is often a critical factor. The aim of this study was to evaluate the stability, volumetric viability, and buccal gap size of reverse tapered body shift (RTBS) implants after immediate placement. Peak insertion torque measurements of two RTBS designs (apical 40% vs. apical 50%), relative to conventionally tapered implants, were assessed in simulated extraction sockets prepared in synthetic bone blocks. Additionally, the proximity of the RTBS implants to neighbouring teeth and anatomical structures, and the buccal gap distance were evaluated in human cadavers. The mean (± standard deviation) insertion torque was 12.00±1.40N•cm for the conventionally tapered implants (n=50), 35.36±2.74N•cm (n=50) for RTBS-1, and 48.20±2.90N•cm (n=50) for RTBS-2; the difference between designs was statistically significant (P<0.01). In total, 40 RTBS implants (20 per design) were placed in six cadaveric premaxillae. Only one locus was inappropriate for both RTBS implant designs, due to the proximity of neighbouring teeth. The average buccal gap for both implant designs was 2.8mm (P=0.104). The improved primary stability and increased buccal gap size with RTBS implants may enhance the feasibility of immediate placement. The study findings should be further validated in clinical trials.
Collapse
Affiliation(s)
- V Christiaens
- Faculty of Medicine and Health Sciences, Dental School, Department of Periodontology and Oral Implantology, Ghent University, Ghent, Belgium.
| | - J Pitman
- Southern Implants (Pty), Ltd, Irene, Gauteng, South Africa
| | - M Glibert
- Faculty of Medicine and Health Sciences, Dental School, Department of Periodontology and Oral Implantology, Ghent University, Ghent, Belgium
| | - G Hommez
- Faculty of Medicine and Health Sciences, Dental School, Department of Periodontology and Oral Implantology, Ghent University, Ghent, Belgium
| | - M Atashkadeh
- Periodontology and Oral Implantology, All Saints Green Dental Practice, Norwich, UK
| | - H De Bruyn
- Faculty of Medicine and Health Sciences, Dental School, Department of Periodontology and Oral Implantology, Ghent University, Ghent, Belgium; Radboud University Medical Centre, Radboud Institute - Health Sciences, Department of Dentistry, Implantology and Periodontology, Nijmegen, The Netherlands
| |
Collapse
|
20
|
Aragoneses JM, Suárez A, Brugal VA, Gómez M. Frequency Values and Their Relationship With the Diameter of Dental Implants. Prospective Study of 559 Implants. IMPLANT DENT 2019; 28:279-288. [DOI: 10.1097/id.0000000000000887] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
21
|
Kriging Surrogate Model for Resonance Frequency Analysis of Dental Implants by a Latin Hypercube-Based Finite Element Method. Appl Bionics Biomech 2019; 2019:3768695. [PMID: 31093299 PMCID: PMC6481145 DOI: 10.1155/2019/3768695] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 02/03/2019] [Accepted: 03/13/2019] [Indexed: 11/18/2022] Open
Abstract
The dental implantation in clinical operations often encounters difficulties and challenges of failure in osseointegration, bone formulation, and remodeling. The resonance frequency (RF) can effectively describe the stability of the implant in physical experiments or numerical simulations. However, the exact relationship between the design variables of dental implants and RF of the system is correlated, complicated, and dependent. In this study, an appropriate mathematical model is proposed to evaluate and predict the implant stability and performance. The model has merits not only in the prediction reliability and accuracy but also in the compatibility and flexibility, in both experimental data and numerical simulation results. The Kriging surrogate model is proposed to present the numerical relationship between RF and material parameters of dental implants. The Latin Hypercube (LH) sampling method as a competent and sophisticated method is applied and combined with the finite element method (FEM). The methods developed in this paper provide helpful guidance for designers and researchers in the implantation design and surgical plans.
Collapse
|
22
|
Rittel D, Dorogoy A, Shemtov-Yona K. Modeling the effect of osseointegration on dental implant pullout and torque removal tests. Clin Implant Dent Relat Res 2018; 20:683-691. [PMID: 30051951 DOI: 10.1111/cid.12645] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 05/01/2018] [Accepted: 05/06/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND Osseointegration of dental implants is a key factor for their success. It can be assessed either by destructive (eg, pullout or torque extraction), or nondestructive methods (eg, resonant frequency analysis). However, as of today there is a scarcity of models that can relate the outcome of destructive tests to the level of osseointegration. PURPOSE To study various percentages of bone to implant bonding (tie) using finite element simulations. While evolutions of the bone mechanical properties are not explicitly taken into account, emphasis is put on the 3-dimensional variable extent of the bone-implant bonding, its statistical distribution, and its influence on the measurable extraction and torque loads, seeking to obtain a quantitative relationship. MATERIALS AND METHODS We performed numerical simulations of randomly tied implants and calculated the evolution of the pullout force as well as that of the extraction torque. CONCLUSION Within simplifying assumptions for the osseointegration represented by a tie (as opposed to frictional) constraint, the results of this work indicate that the torque test is more discriminant than the extraction one, while both cannot really discriminate osseointegration levels below a relative variation of 20%.
Collapse
Affiliation(s)
- Daniel Rittel
- Technion, Faculty of Mechanical Engineering, 32000, Haifa, Israel
| | - Avraham Dorogoy
- Technion, Faculty of Mechanical Engineering, 32000, Haifa, Israel
| | | |
Collapse
|
23
|
Hsu JT, Wu AYJ, Fuh LJ, Huang HL. Effects of implant length and 3D bone-to-implant contact on initial stabilities of dental implant: a microcomputed tomography study. BMC Oral Health 2017; 17:132. [PMID: 29157247 PMCID: PMC5697107 DOI: 10.1186/s12903-017-0422-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 11/12/2017] [Indexed: 12/03/2022] Open
Abstract
Background The influences of potential bone-to-implant contact (BIC) area (pBICA), BIC area (BICA), and three dimensional (3D) BIC percentage (3D BIC%; defined as BICA divided by pBICA) in relation to the implant length on initial implant stability were studied. Correlations between these parameters were also evaluated. Methods Implants with lengths of 8.5, 10, 11.5, and 13 mm were placed in artificial bone specimens to measure three indexes of the initial implant stability: insertion torque value (ITV), Periotest value (PTV), and implant stability quotient (ISQ). The implants and bone specimens were also scanned by microcomputed tomography, and the obtained images were imported into Mimics software to reconstruct the 3D models and calculate the parameters of 3D bone-to-implant contact including pBICA, BICA, and 3D BIC%. The Kruskal-Wallis test, Wilcoxon rank-sum test with Bonferroni adjustment, and Spearman correlations were applied for statistical and correlation analyses. Results The implant length affected ITV more than PTV and ISQ, and significantly affected pBICA, BICA, and 3D BIC%. A longer implant increased pBICA and BICA but decreased 3D BIC%. The Spearman coefficients were high (>0.78) for the correlations between the three 3D BIC parameters and the three indexes of the initial implant stability. Conclusions pBICA, BICA, and 3D BIC% are useful when deciding on treatment plans related to various implant lengths, since these 3D BIC parameters are predictive of the initial implant stability.
Collapse
Affiliation(s)
- Jui-Ting Hsu
- School of Dentistry, China Medical University, 91 Hsueh-Shih Road, Taichung, 40402, Taiwan.,Department of Bioinformatics and Medical Engineering, Asia University, 500 Lioufeng Rd, Wufeng, Taichung, 41354, Taiwan
| | - Aaron Yu-Jen Wu
- Department of Dentistry, Chang Gung Memorial Hospital & College of Medicine, Chang Gung University, 123 Ta-Pei Road, Niao-Sung, Kaohsiung, 83305, Taiwan
| | - Lih-Jyh Fuh
- School of Dentistry, China Medical University, 91 Hsueh-Shih Road, Taichung, 40402, Taiwan
| | - Heng-Li Huang
- School of Dentistry, China Medical University, 91 Hsueh-Shih Road, Taichung, 40402, Taiwan. .,Department of Bioinformatics and Medical Engineering, Asia University, 500 Lioufeng Rd, Wufeng, Taichung, 41354, Taiwan.
| |
Collapse
|