Open AccessEffect of active application of self-etching ceramic primer on the long-term bond strength of different dental CAD/CAM materials
Author(s) -
João Paulo Mendes Tribst,
Pedro Jacy Santos Diamantino,
Maiara-Rodrigues de Freitas,
I. Tanaka,
Laís Regiane Silva-Concílio,
Renata Marques de Melo,
G.F.S.A. Saavedra
Publication year - 2021
Publication title -
journal of clinical and experimental dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.481
H-Index - 23
ISSN - 1989-5488
DOI - 10.4317/jced.58723
Subject(s) - materials science , bond strength , composite material , ceramic , silane , primer (cosmetics) , lithium disilicate , cubic zirconia , dental porcelain , universal testing machine , ultimate tensile strength , adhesive , chemistry , layer (electronics) , organic chemistry
Background The objective of this in vitro study was to evaluate the effect of the active application of self-etching ceramic primer (ME&P) on the bond strength of different dental CAD/CAM materials (Lithium Disilicate ceramic (LD), Leucite ceramic (LE), Zirconia reinforced lithium silicate ceramic (ZLS), and Hybrid ceramic (HC)) with thermocycling aging.Material and Methods The samples were randomly divided into 16 groups (n = 20). Dual resin cement cylinders were made and light cured for 10 s (1.200 mW/cm2) for the shear bond strength test. 3-way ANOVA revealed that the factors were statistically significant ( P < 0.05).Results The aging process had a negative impact on the bond strength for all groups except for Lithium Disilicate, with active application. ZLS and LE showed promising results with high bond strength values for the ME&P active application; however, after aging the bond strength value was significantly reduced. HC showed reduced bond strength values regardless the ME&P application.Conclusions In order to obtain a durable bond strength, the recommended protocol of 20 s of active application followed by 40 s of sitting time in the self-etching ceramic primer should be followed when using reinforced-glass ceramics as restorative materials. Key words: Dentistry, dental materials, silane, shear strength, computer-aided design