Comparative evaluation of short or standard implants with different prosthetic designs in the posterior mandibular region: a three-dimensional finite element analysis study
作者全名："Qin, Siqi; Gao, Zhi"
作者地址："[Qin, Siqi; Gao, Zhi] Chongqing Med Univ, Dept Stomatol, Affiliated Hosp 2, Chongqing, Peoples R China"
通信作者："Gao, Z (通讯作者)，Chongqing Med Univ, Dept Stomatol, Affiliated Hosp 2, Chongqing, Peoples R China."
来源：COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
ESI学科分类：COMPUTER SCIENCE
WOS号：WOS:000858413800001
JCR分区：Q4
影响因子：1.6
年份：2022
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期号：
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文献类型：Article; Early Access
关键词：Finite element analysis; dental implant; implant prosthesis; biomechanics
摘要："The purpose of this study is to evaluate the stress distribution of splinted or nonsplinted restorations supported by 2 short or 2 standard dental implants in the mandibular molar region using three-dimensional finite element analysis. Two standard implants (4.8 x 10mm) were placed in the mandibular molar area. Two short implants (4.8 x 6 mm) were located in the mandibular molar atrophied area. Implant-supported prostheses were simulated with splinted or nonsplinted crowns design. Vertical load of 200 N and oblique load of 100 N were applied on the central fossa and the buccal cusps. Evaluation of stress distribution in implants and peri-implant cortical bone using the finite element analysis software (Ansys, Version 2020, R2), a multipurpose computer design program. The maximum principal stress of cortical bone around the implants was higher in nonsplinted crowns when compared to splinted crowns. The stress concentration of cortical bone surrounding implants increased as the implant length decreased either splinted crowns or nonsplinted crowns. The short implants with nonsplinted crowns showed lower stresses when compared to standard implants with nonsplinted crowns. The results suggest that the nonsplinted prostheses supported by short dental implants might be considered in the molar area of the atrophic mandible."
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