title: Low-Fusing Porcelain Glaze Application on 3Y-TZP Surfaces can Enhance Zirconia-Porcelain Adhesion.
abstract: The aim of this study was to assess whether surface treatment improves zirconia-porcelain adhesion. The 3Y-TZP blocks were cut into squares, then polished and sintered. The zirconia surface treatments were performed as follows: no treatment (C); tribochemical silica coating (TBS); glaze application + hydrofluoric acid etching (GA); glaze application + hydrofluoric acid etching + silanization (GAS); deposition of silica nanofilm (NF). After treatments, veneering porcelain cylinders (3.3 x 3.3 mm) were built up on all specimens and fired. Then the specimens were subjected to thermal cycling (6000 cycles), and subjected to shear test. Fractures were analyzed by stereomicroscopy and SEM. Data were statistically analyzed by 1-way ANOVA and Tukey's test (5%). Zirconia-porcelain bond strength was affected by the ceramic surface treatments (p=0.0001). GA (19.5±3 MPa) and GAS (16.2±4 MPa) recorded the highest bond strength values, while control group had the lowest bond value (10.1±4 MPa). Adhesive failure of the samples predominated. Therefore, glaze application as 3Y-TZP treatment before veneering porcelain stratification may enhance zirconia-porcelain adhesion.
authors.affiliation: Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos Dental School, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil.
authors.forename: Lígia Tiaki
authors.initials: LT
authors.lastname: Yamamoto
authors.affiliation: Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos Dental School, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil.
authors.forename: Vinícius Anéas
authors.initials: VA
authors.lastname: Rodrigues
authors.affiliation: Department of Prosthodontics, Dental School, UFSM - Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
authors.forename: Lucio Strazzabosco
authors.initials: LS
authors.lastname: Dornelles
authors.affiliation: Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos Dental School, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil.
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Bottino
authors.affiliation: Department of Prosthodontics, Dental School, UFSM - Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
authors.forename: Luiz Felipe
authors.initials: LF
authors.lastname: Valandro
authors.affiliation: Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos Dental School, UNESP - Univ Estadual Paulista, São José dos Campos, SP, Brazil.
authors.forename: Renata Marques de
authors.initials: RM
authors.lastname: Melo
mesh_terms: D003776:Dental Porcelain / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D013499:Surface Properties; D015040:Zirconium / Q000737:chemistry*
chemical_list: D003776:Dental Porcelain; D015040:Zirconium; C028541:zirconium oxide