Angled abutments result in increased or decreased stress on surrounding bone of single-unit dental implants: A finite element analysis |
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| Authors: | Kebin Tian Jiang Chen Lilin Han Jin Yang Wenxiu Huang Dong Wu |
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| Institution: | 1. School of Stomatology, Fujian Medical University, Fuzhou, Fujian 350000, China;2. Department of Oral Implantology, Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, Fujian 350002, China;3. Lishui People''s Hospital, Lishui, Zhejiang 323000, China;1. Affiliate Assistant Professor, Department of Restorative Dentistry, University of Washington, Seattle, Wash;1. Affiliate Assistant Faculty, Department of Oral Medicine, University of Washington, Seattle, Wash;2. Program Director Graduate Prosthodontics, Department of Restorative Dentistry, University of Washington, Seattle, Wash;3. Graduate Prosthodontics Resident, Department of Restorative Dentistry, University of Washington, Seattle, Wash;1. Doctoral student, Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil;2. Professor, Department of Restorative Dentistry, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil;3. Prosthodontics Professor, Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil;4. Prosthodontics Professor, Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil;2. F?rat University Engineering Faculty, Mechanical Engineering Department, Turkey;1. Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden;2. Department of Biomaterials, Göteborg University, Göteborg, Sweden;1. Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic;2. X-ray Micro CT and Nano CT Research Group, CEITEC – BUT, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic;3. Oral and Maxillofacial Unit, Department of Otorhinolaryngology, Tampere University Hospital, FI-33521, Tampere, Finland;4. Department of Oral and Maxillofacial Surgery/Oral Pathology, VU University Medical Center, Amsterdam, The Netherlands;1. Faculty of Dentistry, University of Seville, U.S., Calle Avicena s/n, 41009, Seville, Spain;2. Faculty of Dentistry, Complutense University of Madrid, U.C.M., Pza. Ramón y Cajal s/n, 28040, Madrid, Spain;3. ICEMM S.L.U., 8. Oficina 0-08. Edificio Antares, Calle las Fábricas, 28923, Alcorcón, Madrid, Spain;4. University Dental School & Hospital/ University College Cork, T12 E8YV, Wilton, Cork, Ireland |
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| Abstract: | The influence of angled abutments on stress is a matter of debate. It is widely accepted that increased stress on implants and bone has been associated with the use of angled abutments.However, comparisons of clinical success rates of implants restored with angled and straight abutments indicate no significant differences. The aim of the present study was to determine whether angled abutments could result in decreased stress on surrounding bone of single-unit dental implants. By means of finite element analysis (FEA), four simplified models were designed to simulate clinical scenarios in which that implants were placed in an ideal axial position or at an angled position. Each implant was paired with a straight or angled abutment. A simulated occlusal load of 100 N was applied along the vertical axis of the jawbone. The von Mises stress and strain were recorded for each model. The numerical results showed that angled abutments resulted in decreased stresses when implants were not placed in ideal axial position. The present study identified by means of FEA that angled abutments could result in decreased stress on the supporting bone of implant system and may provide some clues to resolve the debate regarding the influence of angled abutments. |
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