Efeito da utilização de implante curto para reabilitação implantossuportada de maxila atrófica: análise fotoelástica e extensométrica

• Autor(a) principal: Lacerda, Arthur Fernandes de [UNESP]
• Data de Publicação: 2018
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203279; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2019-04-18/000911905.pdf
• topic: Implantes dentários; Biomecânica; Prótese dentária fixada por implante; Maxila; Dental implants

Short implants are an alternative for the rehabilitation of atrophic maxilla, thus avoiding the need for advanced surgical procedures and their associated risks. Although this technique has a high success rate, the survival rates, the capacity of absorption and distribution of tension, as well as its capacity to support fixed implants are still discussed. The aim of this study was to evaluate the distribution of stresses qualitatively and quantitatively, by means of the photoelastic (AF) and extensometric (AE) analysis, of an alternative protocol to the bone grafting procedure for the implant - supported rehabilitation of the atrophic maxilla: conventional implant (3,75x11.5mm) associated to a short implant (5x7mm). From a prototype of the edentulous maxilla with atrophy in the posterior region, made by means of a 3D digital model, the specimens were divided into 02 groups of 01 specimen each for AF and two groups of 05 specimens for EA. Twelve models were made, of which 2 were made of photoelastic resin (PL-2) and 10 of polyurethane (F160). Morse cone implants were used and screwed multiple (14-16) attached implanted fixed implants were used. The groups were divided, according to the proposed rehabilitation protocol, in: T (Conventional Treatment) - two implants (3.75x11.5mm) parallel to the axial axis, one of which was installed in the region of the first premolar (14) and another in the region of the first molar (16) and; (Ic) - two implants parallel to the axial axis, one implant (3.75x11.5mm) in the region of the first premolar (14) and one short implant (5x7mm) in the region of the first molar (16). For AF, the photoelastic model / implant / prosthesis assembly was positioned in a circular polariscope associated to a universal test machine (EMIC), with axial force of 100N being applied. The voltages generated were photographed...