Camargos Germana de Villa, Sotto-Maior Bruno Salles, Silva Wander José da, Lazari Priscilla Cardoso, Del Bel Cury Altair Antoninha
Universidade Estadual de Campinas, Universidade de Campinas, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba SP , Brazil, Universidade de Campinas - UNICAMP, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba, SP, Brazil.
Universidade Federal de Juiz de Fora, Universidade de Juiz de Fora, Dental School, Department of Restorative Dentistry, Juiz de Fora MG , Brazil, Universidade de Juiz de Fora - UFJF, Dental School, Department of Restorative Dentistry, Juiz de Fora, MG, Brazil.
Braz Oral Res. 2016 May 31;30(1). doi: 10.1590/1807-3107BOR-2016.vol30.0065.
This study aimed to evaluate the influence of the type of prosthetic abutment associated to different implant connection on bone biomechanical behavior of immediately and delayed loaded implants. Computed tomography-based finite element models comprising a mandible with a single molar implant were created with different types of prosthetic abutment (UCLA or conical), implant connection (external hexagon, EH or internal hexagon, IH), and occlusal loading (axial or oblique), for both immediately and delayed loaded implants. Analysis of variance at 95%CI was used to evaluate the peak maximum principal stress and strain in bone after applying a 100 N occlusal load. The results showed that the type of prosthetic abutment influences bone stress/strain in only immediately loaded implants. Attachment of conical abutments to IH implants exhibited the best biomechanical behavior, with optimal distribution and dissipation of the load in peri-implant bone.
本研究旨在评估与不同种植体连接相关的修复基台类型对即刻负重和延期负重种植体骨生物力学行为的影响。利用计算机断层扫描建立了包含单个磨牙种植体的下颌骨有限元模型，模型具有不同类型的修复基台（UCLA或锥形）、种植体连接（外六角形，EH或内六角形，IH）以及咬合负荷（轴向或斜向），适用于即刻负重和延期负重种植体。采用95%置信区间的方差分析来评估施加100 N咬合负荷后骨内的峰值最大主应力和应变。结果表明，修复基台类型仅对即刻负重种植体的骨应力/应变有影响。锥形基台与IH种植体的连接表现出最佳的生物力学行为，种植体周围骨内的负荷分布和消散最为理想。
