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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Validation of an experimental polyurethane model for biomechanical studies on implant supported prosthesis - tension tests

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Author(s):
Miyashiro, Mariane ; Suedam, Valdey [1] ; Moretti Neto, Rafael Tobias [1] ; Ferreira, Paulo Martins [1] ; Rubo, Jose Henrique [1]
Total Authors: 5
Affiliation:
[1] USP, Bauru Sch Dent, Dept Prosthodont, BR-17012901 Bauru, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Applied Oral Science; v. 19, n. 3, p. 244-248, MAY-JUN 2011.
Web of Science Citations: 4
Abstract

OBJECTIVES: The complexity and heterogeneity of human bone, as well as ethical issues, frequently hinder the development of clinical trials. The purpose of this in vitro study was to determine the modulus of elasticity of a polyurethane isotropic experimental model via tension tests, comparing the results to those reported in the literature for mandibular bone, in order to validate the use of such a model in lieu of mandibular bone in biomechanical studies. MATERIAL AND METHODS: Forty-five polyurethane test specimens were divided into 3 groups of 15 specimens each, according to the ratio (A/B) of polyurethane reagents (PU-1: 1/0.5, PU-2: 1/1, PU-3: 1/1.5). RESULTS: Tension tests were performed in each experimental group and the modulus of elasticity values found were 192.98 MPa (SD=57.20) for PU-1, 347.90 MPa (SD=109.54) for PU-2 and 304.64 MPa (SD=25.48) for PU-3. CONCLUSION: The concentration of choice for building the experimental model was 1/1. (AU)