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Effect of ZrO2 coating on wax pattern before inclusion in phosphate-bonded investment on the fusibility, porosity, surface reaction (a-case) and marginal misfit of crowns cast titanium

Abstract

The titanium has innumerable favorable characteristics, including: biocompatibility, high resistance to the corrosion, low density, high relation strength/mass, high ductility, low thermal conductivity, as well as adjusted mechanical properties that favor its increasing application in structures of denture. However, despite the current period of training of development reached with the available methods of casting, some defects still are frequent, as incomplete casting, internal porosity and extreme formation of reaction layer. The intention of this study is to evaluate the effect of the covering of the wax standard with paste of ZrO2 on the fluidity and the occurrence of internal porosity in casting titanium, the analysis of the reaction layer and marginal unfit of casting crowns propitiated by three phosphate investment: Rematitan Plus (specific for titanium), Rema Exact and Castorit Super-C (alternative) compared with Extreme, specific the Rematitan covering for titanium, to the magnesium base, free of phosphate and silica (group has controlled). Thus, the proposal was to gain subsidies for the study of the viability of the covering use of lesser cost for the casting of structures of prostheses in titanium, what it collaborates for the popularization of this important material. (AU)

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VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

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)
FERREIRA PIERALINI, ANELISE RODOLFO; NOGUEIRA, FABIANE; RIBEIRO, RICARDO FARIA; ADABO, GELSON LUIS. IMPROVEMENT TO THE MARGINAL COPING FIT OF COMMERCIALLY PURE TITANIUM CAST IN PHOSPHATE-BONDED INVESTMENT BY USING A SIMPLE PATTERN COATING TECHNIQUE. JOURNAL OF PROSTHETIC DENTISTRY, v. 108, n. 1, p. 51-57, JUL 2012. Web of Science Citations: 2.
PIERALINI, ANELISE R. F.; BENJAMIN, CAMILA M.; RIBEIRO, RICARDO FARIA; SCAF, GULNARA; ADABO, GELSON LUIS. The Effect of Coating Patterns with Spinel-Based Investment on the Castability and Porosity of Titanium Cast into Three Phosphate-Bonded Investments. JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY, v. 19, n. 7, p. 517-522, OCT 2010. Web of Science Citations: 8.
SICKNAN SOARES DA ROCHA; FABIANE NOGUEIRA; ANELISE RODOLFO FERREIRA PIERALINI; RICARDO FARIA RIBEIRO; GELSON LUIS ADABO. Effect of phosphate-bonded investments on titanium reaction layer and crown fit. Brazilian Oral Research, v. 24, n. 2, p. -, Jun. 2010.

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