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

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 th...

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Bibliographic Details
Published in:Journal of applied oral science 2011-06, Vol.19 (3), p.244-248
Main Authors: Miyashiro, Mariane, Suedam, Valdey, Moretti Neto, Rafael Tobias, Ferreira, Paulo Martins, Rubo, José Henrique
Format: Article
Language:English
Subjects:
Analysis of Variance
Biomechanical Phenomena
Dental Implants
Dental Prosthesis, Implant-Supported - methods
Dentistry
DENTISTRY, ORAL SURGERY & MEDICINE
Elastic Modulus
Humans
Materials Testing
Models, Theoretical
Original
Polyurethanes
Polyurethanes - chemistry
Tensile Strength
Validation studies
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Summary: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. 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). 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. The concentration of choice for building the experimental model was 1/1.
ISSN:1678-7757
1678-7765
1678-7765
1678-7757
DOI:10.1590/S1678-77572011000300012