João-Paulo-Mendes Tribst1, Pedro-Jacy-Santos Diamantino2, Maiara-Rodrigues de Freitas3, Isabela-Vitelli Tanaka2, Lais-Regiane Silva-Concílio1, Renata-Marques de Melo4, Guilherme-de Siqueira-Ferreira-Anzaloni Saavedra4. 1. DDS, MSc, PhD, Department of Dentistry, University of Taubaté (UNITAU), Taubaté 12020-270, SP, Brazil. 2. DDs, MSc, PhD student, Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, São Paulo, Brazil. 3. DDS, MSc, PhD student, Department of Dentistry, University of Taubaté (UNITAU), Taubaté 12020-270, SP, Brazil. 4. DDs, MSc, PhD, Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), Institute of Science and Technology, São José dos Campos, São Paulo, Brazil.
Abstract
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. Copyright:
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. Copyright:
Authors: Márcia Borba; Maico D de Araújo; Karen A Fukushima; Humberto N Yoshimura; Paulo F Cesar; Jason A Griggs; Alvaro Della Bona Journal: Dent Mater Date: 2011-05-04 Impact factor: 5.304
Authors: Dayanne Monielle Duarte Moura; Arthur Magno Medeiros de Araújo; Karina Barbosa de Souza; Aretha Heitor Veríssimo; João Paulo Mendes Tribst; Rodrigo Othávio de Assunção E Souza Journal: Braz Oral Res Date: 2020-03-16