Biomechanical analysis of different implant-abutments interfaces in different bone types: An in silico analysis

Materials Science & Engineering. C, Materials for Biological Applications
Eduardo Piza PellizzerFellippo Ramos Verri

Abstract

The purpose of this study was to analyze the stress distribution of bone tissue around implants with different implant-abutment interfaces: platform switching (PSW); external hexagon (EH) and Morse taper (MT) with different diameters (regular: Ø 4 mm and wide: Ø 5 mm), bone types (I-IV) and subjected to axial and oblique load conditions using three-dimensional finite element analysis (3D-FEA). Sixteen 3D models of various configurations were simulated using InVesalius, Rhinoceros 3D 4.0, and SolidWorks 2011 software, and processed using Femap 11.2 and NeiNastran 11.0 programs. Axial and oblique forces of 200 N and 100 N, respectively, applied at the occlusal surface of prostheses. Maximum principal stress values were obtained from the peri-implant cortical bone of each model. Statistical analyses were performed using ANOVA and Tukey's test for maximum principal stress values. Oblique loading showed higher tensile stress than axial loading (P < 0.001). Wide-diameter implants showed lower stress concentration rather than regular-diameter implants, regardless of both connection and bone type (P < 0.001). Under axial loading, wide-diameter EH implants with regular platforms showed more favorable stress distribution than PSW implant...Continue Reading

Citations

Oct 3, 2019·Brazilian Oral Research·Enéias Carpejani RosaCarmen Lucia Mueller Storrer
Sep 27, 2018·Journal of Healthcare Engineering·Cleidiel Aparecido Araujo LemosEduardo Piza Pellizzer
Sep 15, 2020·International Journal of Oral and Maxillofacial Surgery·F C YoguiE P Pellizzer
Mar 2, 2021·Journal of the Mechanical Behavior of Biomedical Materials·Petr MarciánJan Wolff

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