Abstract

AVELAR, Rander; BARCELLOS, Aline Serrado de Pinho; CARVALHO, Ronaldo Luís  and  KIMPARA, Estevão Tomomitsu. Analysis of the influence of bone model morphology on stress distribution of the Morse taper implant system, method of three-dimensional finite elements. RFO UPF [online]. 2016, vol.21, n.1, pp. 75-80. ISSN 1413-4012.

Knowledge on the mechanical behavior of the implant system is an important parameter in predicting a prosthetic rehabilitation. Objective: To assess the influence of bone tissue shape on stress distribution in Morse taper implant and bone tissue by the method of three-dimensional finite elements. Materials and method: Three model shapes were used for bone tissues: a) parallelepiped, b) elliptical, and c) generated from tomography data. Implants were installed in the three-dimensional models, receiving the application of two loads of 100 N in the craniocaudal direction: 1) vertically along the central axis; and 2) oblique at 45° from the central axis, from buccal to lingual aspect. Results: The maximum Von Mises stresses (MPa) in models of Morse taper implant and parallelepiped bone tissue were 14.30 in vertical loading and 60.78 in oblique loading. In the elliptical bone tissue model, stress was 14.69 in vertical loading and 71.66 in oblique loading. In the bone tissue model originated from the tomography, stress was 15.04 in vertical loading and 79.15 in oblique loading. Conclusion: The shape of bone tissue models had an influence on stress behavior and distribution, and the model generated from tomography data showed the highest stress values.

Keywords : Dental implants.; Finite elements analysis.; Mechanics..