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Surface treatment and adhesion approaches on polymer-infiltrated ceramic network: influence on the bond strength to resin cement
May, Michele Mirian; Rodrigues, Camila da Silva; Rosa, Juliane Bortolotto da; Hermann, Júlia Persio; May, Liliana Gressler.
Afiliação
  • May, Michele Mirian; Federal University of Santa Maria. Santa Maria. BR
  • Rodrigues, Camila da Silva; Federal University of Santa Maria. Santa Maria. BR
  • Rosa, Juliane Bortolotto da; Federal University of Santa Maria. Santa Maria. BR
  • Hermann, Júlia Persio; s.af
  • May, Liliana Gressler; Federal University of Santa Maria. Santa Maria. BR
Braz. j. oral sci ; 20: e211670, jan.-dez. 2021. ilus
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1254259
Biblioteca responsável: BR218.1
ABSTRACT

Aim:

To evaluate the effect of different surface treatments and adhesive approaches on the microshear bond strength of resin cement to a polymer-infiltrated ceramic network (PICN).

Methods:

PICN blocks were randomly assigned into 9 groups (n=10) CTRL no treatment; HF 5% hydrofluoric acid etching; HF-S HF + silane; HF-S-A HF-S + adhesive (Adper Single Bond 2); HF-UA HF + universal adhesive (Single Bond Universal); SB sandblasting with 50 µm Al2O3 particles; SB-S SB + silane; SB-S-A SB-S + adhesive; SB-UA SB + universal adhesive. Resin cement microcylinders (Ø = 0.96 mm; height = 1 mm) (RelyX Ultimate) were built upon the PICN surface after roughness and contact angle measurements. Next, microshear bonding tests (µSBS) were performed (0.5 mm/min) after water storage (37ºC, 90 days) and thermocycling (12,000 cycles; 5ºC-55ºC). Failure modes were observed under stereomicroscope. Bond strength data were analyzed by two-way ANOVA/Tukey's test and t-tests. Kruskal-Wallis/Dunn's tests were conducted for roughness and contact angle data (α = 0.05).

Results:

A rougher surface and lower contact angles were observed for Sandblasting. HF-S (18.54 ± 2.03 MPa), SB-S (19.00 ± 1.66 MPa) and SB-UA (18.07 ± 2.36 MPa) provided the highest bond strength values, followed by the other treated groups. The CTRL group resulted in lower bond strength (7.18 ± 2.34 MPa).

Conclusion:

Hydrofluoric acid etching followed by silane application and sandblasting followed by silane or universal adhesive are useful clinical steps to enhance bonding to PICN. Adhesive applications after HF etching have no advantages in bonding to PICN
Assuntos

Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: BBO - Odontologia / LILACS Assunto principal: Propriedades de Superfície / Cerâmica / Adesivos Dentinários / Cimentos de Resina / Abrasão Dental por Ar / Ácido Fluorídrico Idioma: Inglês Revista: Braz. j. oral sci Assunto da revista: Odontologia Ano de publicação: 2021 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: Federal University of Santa Maria/BR

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: BBO - Odontologia / LILACS Assunto principal: Propriedades de Superfície / Cerâmica / Adesivos Dentinários / Cimentos de Resina / Abrasão Dental por Ar / Ácido Fluorídrico Idioma: Inglês Revista: Braz. j. oral sci Assunto da revista: Odontologia Ano de publicação: 2021 Tipo de documento: Artigo País de afiliação: Brasil Instituição/País de afiliação: Federal University of Santa Maria/BR
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