Objective:To research stress distribution in narrow residual ridge when inserted implants in lingual offset location,with a vertical or 10° lingually inclined direction by finite element analysis.Methods:A three-dimensional finite element model of a narrow alveolar ridge implant with a lingual translation of 1 mm and a vertical or lingual inclination of 10° implantation was established as the experimental group.Control group(model A)was inserting the implant vertically in the abundant residual ridge and experimental groups were placing the implant in lingual offset of 1 mm with a vertical(model B)or 10° lingually inclined direction(model C).Loads were applied to the crown and stress distributions in peri-implant bone were analyzed.Results:Under the loads,stress in peri-implant bone of model A was the smallest,followed by model B and C.Compared with model B,the maximum tensile stress in cervical cortical bone and cervical cancellous bone of model C increased by 1.67 and 0.99 times respectively.Conclusion:It was the most beneficial to the stress distribution of peri-implant bone by inserting implant vertically in the mandibular posterior region with abundant residual ridge.Stress of peri-implant bone increased slightly when inserting implants in lingual offset location,with a vertical or 10° lingually inclined direction where available bone width was insufficient,which can be used as a choice for implant placement in narrow alveolar ridge.
关键词
口腔种植体/有限元分析/牙槽骨改建
Key words
dental implants/finite element analysis/alveolar bone modeling and remodeling
维普
万方数据