Reliability, failure modes and fit of prosthetic single crowns

• Grant number: 13/10021-5
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2014
• End date: December 31, 2016
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: José Henrique Rubo
• Grantee: José Henrique Rubo
• Host Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil
• Associated researchers: Fernanda Ferruzzi Lima ; Fernanda Furtado Piras

Abstract

The use of new technologies and new dental materials is justified when they present some advantage over their predecessors, whether by simplifying the manufacturing process, reducing cost or improving in their physical, optical and mechanical properties ; factors that should culminate in satisfactory clinical performance. The aim of this study is to evaluate the influence of the material and manufacturing technology in reliability and failure modes of prosthetic crowns subjected to cyclic fatigue testing in the presence of water. Crowns will be fabricated using different materials and technologies: cast Cobalt-chromium + ceramic, laser sintered cobalt-chromium + ceramic, CAD / CAM zirconia + ceramic, lightcured microhybrid composite resin and CAD / CAM nano-ceramic composite resin. Each material will define a group of 21 specimens that will be subjected to mouth-motion fatigue testing in the presence of water. The specimens will be evaluated for crack propagation and fracture of the crown. Use level probability Weibull curves and reliability for a mission of 50,000 cycles at 200N will be calculated using the data obtained. Most significant specimens will be submitted to fractographic analysis and compared to prosthetic crowns clinically fractured. (AU)

Scientific publications

(7)

(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)

FERRUZZI, FERNANDA; FERRAIRO, BRUNNA M.; PIRAS, FERNANDA F.; SANCHES BORGES, ANA FLAVIA; RUBO, JOSE HENRIQUE. Fatigue survival and damage modes of lithium disilicate and resin nanoceramic crowns. Journal of Applied Oral Science, v. 27, 2019. (13/10021-5, 11/18061-0)

PIRAS, FERNANDA FURTADO; FERRUZZI, FERNANDA; FERRAIRO, BRUNNA MOTA; RAMALHO, ILANA SANTOS; BONFANTE, ESTEVAM AUGUSTO; RUBO, JOSE HENRIQUE. Analysis of correlation between optical and microtomography measurements of cementation space in CAD-CAM ceramic crowns. JOURNAL OF PROSTHETIC DENTISTRY, v. 124, n. 1, JUL 2020. (13/10021-5)

PIRAS, FERNANDA FURTADO; FERRUZZI, FERNANDA; FERRAIRO, BRUNNA MOTA; MOSQUIM, VICTOR; RAMALHO, ILANA SANTOS; BONFANTE, ESTEVAM AUGUSTO; RUBO, JOSE HENRIQUE. RESEARCH AND EDUCATION Correlation between 2D and 3D measurements of cement space in CAD-CAM crowns. JOURNAL OF PROSTHETIC DENTISTRY, v. 128, n. 4, p. 7-pg., 2022-10-26. (12/19078-7, 13/10021-5, 16/01921-0)

RAMOS-TONELLO, CARLA M.; LISBOA-FILHO, PAULO N.; ARRUDA, LARISA B.; TOKUHARA, CINTIA K.; OLIVEIRA, RODRIGO C.; FURUSE, ADILSON Y.; RUBO, JOSE H.; BORGES, ANA FLAVIA S.. Titanium dioxide nanotubes addition to self-adhesive resin cement: Effect on physical and biological properties. Dental Materials, v. 33, n. 7, p. 866-875, JUL 2017. (13/10021-5)

EDWARDS REZENDE, CARLOS EDUARDO; SANCHES BORGES, ANA FLAVIA; GONZAGA, CARLA CASTIGLIA; DUAN, YUANYUAN; RUBO, JOSE HENRIQUE; GRIGG, JASON ALAN. Effect of cement space on stress distribution in Y-TZP based crowns. Dental Materials, v. 33, n. 2, p. 144-151, FEB 2017. (11/18061-0, 13/10021-5)

FERRAIRO, BRUNNA MOTA; PIRAS, FERNANDA FURTADO; LIMA, FERANDA FERRUZZI; HONORIO, HEITOR MARQUES; HUNGARO DUARTE, MARCO ANTONIO; SANCHES BORGES, ANA FLAVIA; RUBO, JOSE HENRIQUE. Comparison of marginal adaptation and internal fit of monolithic lithium disilicate crowns produced by 4 different CAD/CAM systems. CLINICAL ORAL INVESTIGATIONS, v. 25, n. 4, AUG 2020. (13/10021-5)

EDWARDS REZENDE, CARLOS EDUARDO; SANCHES BORGES, ANA FLAVIA; MACEDO, RANDER MOREIRA; RUBO, JOSE HENRIQUE; GRIGGS, JASON ALAN. Dimensional changes from the sintering process and fit of Y-TZP copings: Micro-CT analysis. Dental Materials, v. 33, n. 11, p. E405-E413, NOV 2017. (11/18061-0, 13/10021-5)