Avaliação comparativa entre diferentes sistemas de conexões na biomecânica de próteses fixas implantossuportadas de três elementos quando submetidas a cargas axiais e oblíquas por meio da análise fotoelástica e extensométrica

• Autor(a) principal: Mazza, Letícia Cerri [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155275; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-04-28/000881369.pdf
• topic: Implantes dentários; Biomecânica; Prótese dentária fixada por implante; Dental implants

Currently, the connections systems of implants that exist on the market may have different configurations. It is fundamental the knowledge of each of these models, its effect on the stress transmission and the interaction between them, to optimize the distribution of masticatory load by means of these prostheses, and those for implants and to support bone. Thereby, the aim of this present study was to evaluate, through photoelastic and strain gauge analysis, the biomechanical behavior of implant-supported 3 elements prosthesis with different types of connections: external hexagon (EH), morse taper (MT), internal morse hexagon (IMH), morse taper hexagonon (MTH) and frictional morse taper (FMT) and different types of occlusal loads (axial and oblique). The specimens were divided into 05 groups of 01 specimens each for photoelastic analysis and 05 groups of 05 specimens each for strain gauge analysis. Thirty models were made, 5 of photoelastic resin (PL-2) and 25 of polyurethane (F160). For each group was made a 3 elements dental prosthesis on 2 implants of 11,5x4mm (Osteofit). In photoelasticity test, a photoelastic model set/implant/prosthesis were positioned in a circular polariscope, and then loads were applied of 100 N, on axial and oblique direction (45°), in fixed points of the occlusal surface of the prosthetic crown with support of a universal testing machine (EMIC). The generated stress were photographically recorded and analyzed qualitatively. For strain gauge analysis, 2 strain gauges of resistance were placed in the region where corresponds to mesial and distal bone crest of each implant and the electric signals were captured by a data acquisition device. The data were submitted to ANOVA and Tukey's test (α = 0.05). By photoelasticity, in the axial load, all groups showed similar number of high-intensity...