Effect of extrinsic characterization, polishing and glazing on the roughness and wear resistance of Y-FSZ against tooth enamel and feldspathic porcelain antagonists

• Grant number: 20/05467-8
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: November 01, 2020
• End date: June 30, 2024
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Renata Cristina Silveira Rodrigues Ferracioli
• Grantee: Paulo Eduardo Barros de Souza Oliveira
• Host Institution: Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

The fully stabilized zirconia (Y-FSZ) was introduced into the dental market being indicated to manufacturing anterior and posterior monolithic crowns, and has drawn the interest of the scientific community because presents high translucency associated with adequate mechanical properties. However, before cementation of the prosthetic restoration, it is necessary to selection a suitable surface finishing procedure that improves aesthetics and reduces surface roughness, while provides adequate wear resistance against of antagonist. The feldspathic porcelain is an aesthetic material that is used for many decades in dentistry, has several variations of indications and can be easily found as an antagonist. Therefore, the purpose of this study is to evaluate the effect of of extrinsic characterization, polishing and glazing on the wear resistance of Y-FSZ against dental enamel and feldspathic porcelain. For this, stylus tips specimens and antagonist discs will be made, the proposed surface finishes will be performed and then subjected to topography and surface roughness analysis, the wear resistance test and evaluated for vertical height loss, mass loss topography and surface roughness.