Dental implant primary stability in different regions of the Jawbone: CBCT-based 3D finite element analysis

Aim: This study aimed to analyze the primary stability of dental implant in maxillary and mandibular anterior and posterior regions using a finite element analysis. Materials and methods: CBCT images of maxillary and mandibular regions were collected from patients' radiographic data and transformed to 3D models. A Straumann Dental implant was inserted in each bone model and then pulled-out, where amount von-Mises stress was obtained and analyzed for each. A comparison between the insertion and the pull-out was evaluated. Results: Twenty-four images were randomly selected for analysis from 122 scans. In both the insertion and the pull-out of the dental implant, von-Mises stress was high in cortical as compared to the cancellous bone (p<0.0001). Maxillary posterior region had a low von-Mises stress (p<0.001). Bone plastic deformation was higher in cancellous than the cortical bone in all bone regions and was the lowest in maxillary posterior region (p<0.001). Bone displacement decreased from Type I to type IV bone. Conclusion: Evaluation of von-Mises stress showed different measurements in maxillary and mandibular regions. Bone deformation was low in the maxillary posterior region. (C) 2019 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.