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Effect of different surface treatments and multimode adhesive application on the Weibull characteristics, wettability, surface topography and adhesion to CAD/CAM lithium disilicate ceramic
Souza, Karina Barbosa; Moura, Dayanne Monielle Duarte; Silva, Sarah Emille Gomes da; Araújo, Gabriela Monteiro de; Pinto, Rafael de Almeida Spinelli; Leite, Fabíola Pessôa Pereira; Özcan, Mutlu; Souza, Rodrigo Othávio de Assunção e.
Affiliation
  • Souza, Karina Barbosa; Universidade Federal do Rio Grande do Norte. Departamento de Odontologia. Natal. BR
  • Moura, Dayanne Monielle Duarte; Universidade Federal do Rio Grande do Norte. Departamento de Odontologia. Natal. BR
  • Silva, Sarah Emille Gomes da; Universidade Federal do Rio Grande do Norte. Departamento de Odontologia. Natal. BR
  • Araújo, Gabriela Monteiro de; Universidade Federal do Rio Grande do Norte. Departamento de Odontologia. Natal. BR
  • Pinto, Rafael de Almeida Spinelli; Universidade Federal de Juiz de Fora. Departamento de Odontologia. Juiz de Fora. BR
  • Leite, Fabíola Pessôa Pereira; Universidade Federal de Juiz de Fora. Departamento de Odontologia. Juiz de Fora. BR
  • Özcan, Mutlu; University of Zurich. Division of Dental Biomaterials. Clinic for Reconstructive Dentistry, Center of Dental Medicine. Zurich. CH
  • Souza, Rodrigo Othávio de Assunção e; Universidade Federal do Rio Grande do Norte. Departamento de Odontologia. Natal. BR
J. appl. oral sci ; 28: e20200122, 2020. tab, graf
Article in En | LILACS, BBO | ID: biblio-1143143
Responsible library: BR1.1
ABSTRACT
Abstract This paper aims to evaluate the effect of different surface treatments on surface topography, wettability, and shear bond strength of resin cement to glass ceramic.

Methodology:

For SBS test, 32 blocks (7x7x2 mm) of lithium disilicate were obtained and randomly divided into eight groups (four blocks per group) according to each surface treatment (HF 20 s, 60 s, 120 s + silanization/S or Scotch Bond Universal/ SBU) and the Monobond Etch & Prime - MEP application followed or not by SBU. On each treated surface ceramic block, up to four dual-curing resin cement cylinders were prepared and light-cured for 40s (N=120/n=15). The specimens were thermocycled (10,000 cycles, 5-55°C, 30 s) and the SBS test (50KgF, 0.5 mm/min) was performed. Furthermore, failure analysis, wettability, AFM, and SEM were carried out. SBS data (MPa) were analyzed using Student's t-test, two-way ANOVA, Tukey's test (5%) and Weibull's analysis.

Results:

For HF experimental groups, two-way ANOVA presented the factors "etching time" and "bonding agent" as significant (p<0.05). After silane application, the HF groups presented similar bond strength. SBU application compromised the SBS, except for 120s etching time (HF120sS 23.39ᵃ±6.48 MPa; HF120sSBU 18.76ᵃ±8.81MPa). For MEP groups, SBU application did not significantly affect the results (p=0.41). The MEP group presented the highest Weibull modulus (4.08A) and they were statistically different exclusively from the HF20sSBU (0.58B).

Conclusion:

The HF 20s, 60s, 120 s followed by silane, promoted similar resin-bond strength to ceramic and the SBU application after HF or MEP did not increase the SBS.
Subject(s)
Key words

Full text: 1 Index: LILACS Main subject: Ceramics / Dental Bonding / Wettability / Dental Porcelain Language: En Journal: J. appl. oral sci Journal subject: ODONTOLOGIA Year: 2020 Type: Article

Full text: 1 Index: LILACS Main subject: Ceramics / Dental Bonding / Wettability / Dental Porcelain Language: En Journal: J. appl. oral sci Journal subject: ODONTOLOGIA Year: 2020 Type: Article