Validation of an experimental polyurethane model for biomechanical studies on implant supported prosthesis - tension tests
J. appl. oral sci
;
19(3): 244-248, May-June 2011. ilus, graf
Artigo
em Inglês
| LILACS
| ID: lil-588130
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.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Poliuretanos
/
Implantes Dentários
/
Prótese Dentária Fixada por Implante
/
Módulo de Elasticidade
Limite:
Humanos
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2011
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
Brasil
Instituição/País de afiliação:
University of São Paulo/BR
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