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The Effect of GaAlAs Laser, Sandblasting, and Primers on Bond Strength between Zirconia Ceramic and Direct Resin Composite after Thermocycling / O efeito do laser de GaAlAs, jateamento e primers na resistência de união entre cerâmica de zircônia e resina composta direta após termociclagem
Kukiattrakoon, Boonlert; Kosago, Pitchaporn.
  • Kukiattrakoon, Boonlert; Prince of Songkla University. Department of Conservative Dentistry and Dental Materials Research Unit (Second phase). Hat Yai. TH
  • Kosago, Pitchaporn; Prince of Songkla University. Department of Conservative Dentistry. Hat Yai. TH
Braz. dent. sci ; 24(3): 1-9, 2021. tab, ilus
Article in English | BBO, LILACS | ID: biblio-1281947
ABSTRACT

Objective:

This study was conducted to evaluate the shear bond strength (SBS) of resin composite on zirconia ceramic after different surface treatments and thermocycling. Material and

Methods:

Two hundred and seven zirconia specimens were divided into 9 groups and treated as follows Group C­no treatment (served as the control); Group PC­Clearfil Ceramic primer (CP); Group PZ­Z-Prime Plus primer (ZP); Group A­sandblasted with 50 µm Al2O3 at 0.25 MPa for 20 s at a distance of 10 mm; Group AC­sandblasted and coated with CP; Group AZ­sandblasted and coated with ZP; Group L­GaAlAs diode laser with 808 ± 5 mm wavelength, 3 watts power, and 10 Hz frequency; Group LC­GaAlAs diode laser coated with CP; and Group LZ­GaAlAs diode laser coated with ZP. All specimens were directly bonded with a resin composite cylinder using Adper Scotchbond Multi-purpose. Specimens were stored at 37ºC for 30 days and subjected to 2,500 thermocycles from 5ºC and 55ºC before the SBS was performed. One-way ANOVA and Tukey's HSD test (α = 0.05) were performed. Surface topography changes were evaluated with a scanning electron microscope (SEM).

Results:

Sandblasting combined with CP or ZP (25.08 ± 0.86 and 24.78 ± 0.13 MPa, respectively) yielded the highest SBS and was significantly different from other methods (p < 0.05). SEM showed various degrees of changes depending on different surface treatments.

Conclusion:

Surface treatment by sandblasting combined with a CP or ZP significantly provide the highest SBS between zirconia and resin composite (AU)
RESUMO

Objetivo:

Este estudo foi conduzido para avaliar a resistência ao cisalhamento (SBS) de resina composta em cerâmica de zircônia após diferentes tratamentos de superfície e termociclagem. Material e

Métodos:

Duzentos e sete espécimes de zircônia foram divididos em 9 grupos e tratados da seguinte forma Grupo C­ sem tratamento (serviu como controle); Grupo PC­Clearfil Ceramic primer (CP); Grupo PZ­Z-Prime Plus primer (ZP); Grupo A - jateado com 50 µm de Al2O3 a 0,25 MPa por 20 s a uma distância de 10 mm; Grupo AC - jateado e revestido com CP; Grupo AZ - jateado e revestido com ZP; Grupo L ­ Laser de diodo GaAlAs com comprimento de onda de 808 ± 5 mm, potência de 3 watts e frequência de 10 Hz; Grupo LC ­Laser de diodo GaAlAs revestido com CP; e Grupo LZ ­ Laser de diodo GaAlAs revestido com ZP. Todos os espécimes foram diretamente colados com um cilindro de resina composta usando Adper Scotchbond Multi-purpose. As amostras foram armazenadas a 37ºC por 30 dias e submetidas a 2.500 termociclos de 5ºC e 55ºC antes da realização do SBS. ANOVA unilateral e teste HSD de Tukey (α = 0,05) foram realizados. As mudanças na topografia da superfície foram avaliadas com um microscópio eletrônico de varredura (MEV).

Resultados:

O jato de areia combinado com CP ou ZP (25,08 ± 0,86 e 24,78 ± 0,13 MPa, respectivamente) rendeu o maior SBS e foi significativamente diferente dos outros métodos (p < 0,05). SEM mostrou vários graus de mudanças dependendo dos diferentes tratamentos de superfície.

Conclusão:

O tratamento de superfície por jato de areia combinado com um CP ou ZP fornece significativamente o maior SBS entre a zircônia e a resina composta (AU)
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Microscopy, Electron, Scanning / Composite Resins / Shear Strength Language: English Journal: Braz. dent. sci Journal subject: Dentistry / Sa£de Bucal Year: 2021 Type: Article Affiliation country: Thailand Institution/Affiliation country: Prince of Songkla University/TH / Prince of Songkla University/TH

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Full text: Available Index: LILACS (Americas) Main subject: Microscopy, Electron, Scanning / Composite Resins / Shear Strength Language: English Journal: Braz. dent. sci Journal subject: Dentistry / Sa£de Bucal Year: 2021 Type: Article Affiliation country: Thailand Institution/Affiliation country: Prince of Songkla University/TH / Prince of Songkla University/TH