Strength of a feldspar ceramic according to the thickness and polymerization mode of the resin cement coating.
Dent Mater J
; 30(3): 323-9, 2011.
Article
in En
| MEDLINE
| ID: mdl-21597223
The aim of this study was to evaluate, in vitro, the biaxial flexural strength (ISO 6872) of a feldspathic ceramic (VM7, Vita Zahnfabrik) coated with a resin cement with different thicknesses and polymerization mode. Control groups consisted in VM7 with and without acid etching with 10% hydrofluoric acid for 1 min. Experimental groups comprised VM7 etched, silanated and coated with Variolink II (Ivoclar Vivadent) cement, that was polymerized through the porcelain in light-cure and dual-cure modes, with thickness ≤150 µm or >150 µm. The specimens (n=15) were subjected to the biaxial flexural strength essay and analyzed fractographically. Parametric (Dunnet, Anova 2-way, Tukey) and non-parametric tests (Weibull) were used to evaluate results. Ceramic disks coated with resin cements of either activation modes and thicknesses exhibited higher flexural strength while the Weibull moduli did not present significant differences for a confidence interval of 95%.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Potassium Compounds
/
Resin Cements
/
Coated Materials, Biocompatible
/
Dental Porcelain
/
Aluminum Silicates
Limits:
Humans
Language:
En
Journal:
Dent Mater J
Year:
2011
Document type:
Article
Affiliation country:
Brazil
Country of publication:
Japan