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Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution.
Miotto, Larissa N; Fais, Laiza M G; Ribeiro, Ana L R; Vaz, Luís G.
Afiliación
  • Miotto LN; Postgraduate student, Department of Dental Materials and Prosthodontics, Araraquara Dental School, São Paulo State University, Araraquara, Sao Paulo, Brazil.
  • Fais LM; Professor, Department of Dental Materials and Prosthodontics, Araraquara Dental School, São Paulo State University, Araraquara, Sao Paulo, Brazil. Electronic address: lamgf@hotmail.com.
  • Ribeiro AL; Professor, Faculdade de Ciências do Tocantins (FACIT), Araguaína, Tocantins, Brazil.
  • Vaz LG; Associate Professor, Department of Dental Materials and Prosthodontics, Araraquara Dental School, São Paulo State University, Araraquara, Sao Paulo, Brazil.
J Prosthet Dent ; 116(1): 102-11, 2016 Jul.
Article en En | MEDLINE | ID: mdl-26831918
STATEMENT OF PROBLEM: The mechanical properties of new titanium alloys with an elastic modulus closest to cortical bone have been studied. However, potentially damaging conditions experienced in the oral cavity, such as fluoride ions, can initiate a localized or crevice process of corrosive degradation in the alloy surfaces. PURPOSE: The purpose of this in vitro study was to evaluate the effects of long-term immersion in artificial saliva or in fluoride solution on mean roughness (Ra), Vickers hardness, and topography of the new titanium alloy Ti-35Nb-7Zr-5Ta (TNZT) compared with those of cp Ti and Ti-6Al-4V (TAV). MATERIAL AND METHODS: Disks (N=210) were divided into cp Ti, TAV, and TNZT and subdivided according to the following treatments: no immersion (N(-), control), immersion in artificial saliva (S), and immersion in fluoride (F) during periods equivalent to 5, 10, 15, and 20 years. The Ra and Vickers hardness were measured with a profilometer and a hardness tester. The topography was analyzed by scanning electronic microscopy. Data were compared using the Kruskal-Wallis and Dunn tests (α=.05). RESULTS: Values of Ra and hardness were significantly different among the metals (Ra: TAV
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Saliva Artificial / Titanio / Aleaciones Dentales / Fluoruros Idioma: En Revista: J Prosthet Dent Año: 2016 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos
Texto completo
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Saliva Artificial / Titanio / Aleaciones Dentales / Fluoruros Idioma: En Revista: J Prosthet Dent Año: 2016 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos