Validation of an experimental polyurethane model for biomechanical studies on implant-supported prosthesis: compression tests
J. appl. oral sci
; 19(1): 47-51, Jan.-Feb. 2011. ilus, graf, tab
Article
in En
| LILACS
| ID: lil-578747
Responsible library:
BR1.1
ABSTRACT
OBJECTIVES:
The complexity and heterogeneity of human bone, as well as ethical issues, most always hinder the performance of clinical trials. Thus, in vitro studies become an important source of information for the understanding of biomechanical events on implant-supported prostheses, although study results cannot be considered reliable unless validation studies are conducted. The purpose of this work was to validate an artificial experimental model based on its modulus of elasticity, to simulate the performance of human bone in vivo in biomechanical studies of implant-supported prostheses. MATERIAL ANDMETHODS:
In this study, fast-curing polyurethane (F16 polyurethane, Axson) was used to build 40 specimens that were divided into five groups. The following reagent ratios (part A/part B) were used Group A (0.5/1.0), Group B (0.8/1.0), Group C (1.0/1.0), Group D (1.2/1.0), and Group E (1.5/1.0). A universal testing machine (Kratos model K - 2000 MP) was used to measure modulus of elasticity values by compression.RESULTS:
Mean modulus of elasticity values were Group A - 389.72 MPa, Group B - 529.19 MPa, Group C - 571.11 MPa, Group D - 470.35 MPa, Group E - 437.36 MPa.CONCLUSION:
The best mechanical characteristics and modulus of elasticity value comparable to that of human trabecular bone were obtained when A/B ratio was 11.Key words
Full text:
1
Collection:
01-internacional
Database:
LILACS
Main subject:
Polyurethanes
/
Dental Implants
/
Dental Prosthesis Design
/
Dental Prosthesis, Implant-Supported
Type of study:
Prognostic_studies
Aspects:
Ethics
Language:
En
Journal:
J. appl. oral sci
Journal subject:
ODONTOLOGIA
Year:
2011
Document type:
Article
/
Project document
Affiliation country:
Brazil
Country of publication:
Brazil