Implant insertion angle and depth: Peri-implant bone stress analysis by the finite element method
F. Rito-Macedo, M. Barroso-Oliveira, Luiz Renato Paranhos, J. Rodrigues-Brum, I. Pereira-Lima, FM Gomes-França, R. de Brito-Junior
Abstract
BACKGROUND: The study aimed to assess the influence of different implant insertion angles and depths on the stresses produced on the surface of peri-implant bone tissue under axial and oblique loading. MATERIAL AND METHODS: Studies (CRIS). The implant was placed in the region of element 36, according to the following models: M1 (0 mm / 0°); M2 (0 mm / 17°); M3 (0 mm / 30°); M4 (2 mm / 0°); M5 (2 mm / 17°); M6 (2 mm / 30°). The models were subjected to loading, with intensity of 100 N. The stress assessment followed the Mohr-Coulomb criterion and qualitative and quantitative analyses were performed. RESULTS: Angled implants and installed below the bone crest produced the highest stresses on the cortical bone, and the axial load presented the highest stress peaks on the buccal side of implants perpendicular to the bone crest. Regardless of the type of load (axial or oblique), inclined implants presented the highest stress peaks on the lingual side of the cortical bone. CONCLUSIONS: Finite element analysis, dental implants, axial loading, biomechanical phenomena.