Morse taper performance: A finite element analysis study

• Autor(a) principal: Petris, Gustavo Passarelli
• Data de Publicação: 2019
• Outros Autores: De Carli, João Paulo, Paranhos, Luiz Renato, Santos, Pâmela Letícia, Benetti, Paula, Walber, Marcio, Linden, Eduardo Sandini, Linden, Maria Salete Sandini
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Clinics
• Texto Completo: https://www.revistas.usp.br/clinics/article/view/157904
• topic: Dental Implants; Finite Element Analysis; Stress Distribution

OBJECTIVES: To evaluate and compare the magnitude and distribution of stresses generated on implants, abutments and first molar metal-ceramic crowns using finite element analysis. METHODS: Preliminary three-dimensional models were created using the computer-aided design software SolidWorks. Stress and strain values were observed for two distinct virtual models: model 1 - Morse taper and solid abutment; model 2 - Morse taper and abutment with screw. A load (250 N) was applied to a single point of the occlusal surface at 15o to the implant long axis. Von Mises stresses were recorded for both groups at four main points: 1) abutment-retaining screws; 2) abutment neck; 3) cervical bone area; 4) implant neck. RESULTS AND CONCLUSION: Model 1 showed a higher stress value (1477.5 MPa) at the abutment-retaining screw area than the stresses found in model 2 (1091.1 MPa for the same area). The cervical bone strain values did not exceed 105 mm for either model.