Effect of cyclic loading and casting technique over marginal fit, stress and detorque in multi-unit implant-supported prostheses

• Grant number: 11/02841-7
• Support type: Scholarships in Brazil - Master
• Effective date (Start): March 01, 2012
• Effective date (End): February 28, 2013
• Field of knowledge: Health Sciences - Dentistry - Dental Clinics
• Principal researcher: Marcelo Ferraz Mesquita
• Grantee: Cláudia Lopes Brilhante Bhering
• Home Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil

Abstract

The aim of this study is to evaluate the influence of the obtainment method of prosthetic components and the effect of cyclic loading in the detorque of the prosthetic screws, and in the marginal misfit and stress of the prosthesis-implant system. Metal prosthetic frameworks will be manufactured simulating three-element fixed-partial prostheses supported by two implants or complete fixed prostheses supported by five implants. The frameworks will be waxed with entirely calcinable plastic cylinders or premachined metalloplastic cylinders. After waxed, the frameworks will be randomly distributed into the evaluation groups (n=10). Three groups with entirely calcinable components and three groups with overcastted components will be obtained for each framework design evaluated. Individual models will be manufactured for each framework. Framework marginal misfit and screw detorque will be evaluated in these models, before and after cyclic loading is performed (1 million cycles, 2Hz, 130N). Stress analyses will be performed using both strain gauge and finite element methods. The results obtained will be submitted to exploratory analysis, and the appropriate statistical tests will be applied. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BRILHANTE BHERING, CLAUDIA LOPES; VIEIRA MARQUES, ISABELLA DA SILVA; FERREIRA KOYAMA TAKAHASHI, JESSICA MIE; RICARDO BARAO, VALENTIM ADELINO; XEDIEK CONSANI, RAFAEL LEONARDO; MESQUITA, MARCELO FERRAZ. Fit and Stability of Screw-Retained Implant-Supported Frameworks Under Masticatory Simulation: Influence of Cylinder Type. JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY, v. 25, n. 6, p. 459-465, AUG 2016. Web of Science Citations: 4.

BRILHANTE BHERING, CLAUDIA LOPES; VIEIRA MARQUES, ISABELLA DA SILVA; FERREIRA KOYAMA TAKAHASHI, JESSICA MIE; RICARDO BARAO, VALENTIM ADELINO; XEDIEK CONSANI, RAFAEL LEONARDO; MESQUITA, MARCELO FERRAZ. The effect of casting and masticatory simulation on strain and misfit of implant-supported metal frameworks. Materials Science & Engineering C-Materials for Biological Applications, v. 62, p. 746-751, MAY 1 2016. Web of Science Citations: 6.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BHERING, Cláudia Lopes Brilhante. Effect of cyclic loading and casting technique over marginal fit, strain and loosening torque on frameworks of multi-unit implant-supported prostheses. 2013. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba.