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Do thermal treatments affect the mechanical behavior of porcelain-veneered zirconia? A systematic review and meta-analysis.
Rodrigues, Camila da Silva; Aurélio, Iana Lamadrid; Kaizer, Marina da Rosa; Zhang, Yu; May, Liliana Gressler.
Afiliação
  • Rodrigues CDS; Post-Graduate Program in Dental Science, Federal University of Santa Maria (UFSM), 1184 Floriano Peixoto, 7th floor, 97015-372, Santa Maria, RS, Brazil.
  • Aurélio IL; Post-Graduate Program in Dental Science, Federal University of Santa Maria (UFSM), 1184 Floriano Peixoto, 7th floor, 97015-372, Santa Maria, RS, Brazil.
  • Kaizer MDR; Department of Biomaterials and Biomimetics, New York University, 433 First Avenue, 8th floor, 10010, New York, NY, USA.
  • Zhang Y; Department of Biomaterials and Biomimetics, New York University, 433 First Avenue, 8th floor, 10010, New York, NY, USA.
  • May LG; Department of Restorative Dentistry, Federal University of Santa Maria (UFSM), 1184 Floriano Peixoto Street, 3rd floor, 97015-372, Santa Maria, RS, Brazil. Electronic address: liligmay@gmail.com.
Dent Mater ; 35(5): 807-817, 2019 05.
Article em En | MEDLINE | ID: mdl-30846374
OBJECTIVES: A systematic review of in vitro studies was conducted to assess the effect of thermal treatments on flexural strength or critical load to failure of porcelain-veneered zirconia (PVZ). SOURCES: Literature searches were performed up to June 2018 in PubMed/MEDLINE, Scopus and Web of Science databases, with no publication year or language limits. DATA: From 393 relevant studies, 21 were selected for full-text analysis, from which 7 failed to meet the inclusion criteria. The 14 remaining papers were included in the systematic review: 8 for meta-analysis and 6 restricted to descriptive analyses. Hand searching of reference lists resulted in no additional papers. STUDY SELECTION: In vitro studies using PVZ specimens testing the influence of thermal treatments on the fracture resistance to monotonic or cyclic loading. Papers evaluating cooling rate were divided into those applying fast cooling from above the porcelain glass transition temperature (Tg), or from below it. Meta-analyses were performed separately for flexural strength and critical load to failure, using random effects at a 5% significance level. CONCLUSIONS: Delaying furnace opening at a temperature below the porcelain Tg is advised for PVZ restorations, in order to improve their fracture resistance. Additional information is required to confirm the apparent beneficial effect of self-glaze and repeated veneer firings on the mechanical properties of these restorations. Finally, in order to obtain conclusive and relevant evidence regarding thermal treatments and the fracture resistance of PVZs, future studies should concentrate on anatomically-correct crown specimens.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Porcelana Dentária / Facetas Dentárias Tipo de estudo: Systematic_reviews Idioma: En Revista: Dent Mater Assunto da revista: ODONTOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Porcelana Dentária / Facetas Dentárias Tipo de estudo: Systematic_reviews Idioma: En Revista: Dent Mater Assunto da revista: ODONTOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido