Optimization of the implant diameter and length in type B/2 bone for improved biomechanical properties: a three-dimensional finite element analysis. (English) Zbl 1172.92307
Summary: In this paper, effects of the implant diameter and length on the maximum equivalent stresses were evaluated in jaw bones, and maximum displacements examined in an implant-abutment complex by a finite element method. The implant diameter ranged from 3.0 mm to 5.0 mm, and the implant length ranged from 6.0 mm to 16.0 mm. The results suggested that under axial load, the maximum equivalent stresses in cortical and cancellous bones decreased by 77.4% and 68.4% with the increasing of the diameter and length, respectively. Under buccolingual load, those decreased by 64.9% and 82.8%, respectively. The maximum displacements of implant-abutment complex decreased by 56.9% and 78.2% under axial and buccolingual load, respectively. When the diameter exceeded 3.9 mm and the length exceeded 9.5 mm, the minimum stress/displacement was obtained. The evaluating targets were more sensitive to the diameter change than those of the length. Data indicated that the implant diameter affected the stress distribution in the jaw bone more than the length did; and an implant diameter exceeding 3.9 mm and implant length exceeding 9.5 mm was the optimal selection for type B/2 bone in a cylinder implant by biomechanical considerations.
Keywords:
three-dimensional finite element analysis; stress; implant diameter; implant length; optimal selectionReferences:
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