Avaliação biomecânica da resistência ao torque de inserção de diferentes sistemas de implantes

Abstract

Objective: to, in vitro resistance to insertion torque of different implant systems, for the purpose of identifying possible risks to clinical use. Methods: A total of three groups (five units each), as follows: A) Implant Osseotite, 4 x 13 mm, external hexagonal (Biomet 3i); B) Deploy Bonelike 4 x 13 mm, external hexagonal (Biotechnology); C) Implant Mk III RP, 3.75 x 13 mm, external hexagonal (Nobel Biocare). Disposable insert keys were used, and each set was subjected to the torque test (ASTM F543: 2007) for determining the rupture torque, break angle flow in two degrees torque and maximum torque. Results: we obtained the average values of the parameters analyzed for the respective groups: Break torque (N / cm2): 218.00; 132.00; 132.00; angular deformation of rupture (°): 29.04; 39.94; 31.92; torque flow at 2 ° (N / cm2): 177.00; 153.00; 140.00; Maximum torque (N / cm2): 222.00; 172.00; 142.00. Conclusions: the resistance limits the torque of the analyzed systems were superior to clinical needs, offering security to their applications, since their mechanical limits respected, and, Group A (Biomet 3i) showed the best results among the groups.