Silva Uriel Paulo Coelho, Maia Andréa Peixoto, Silva Isaias Donizeti, Miranda Milton Edson, Brandt William Cunha
Department of Dental Prosthesis, College Morgana Potrich and College Sul Americana, Goiânia, Goiás, Brazil.
Department of Prosthodontics, São Leopoldo Mandic, Campinas, São Paulo, Brazil.
Eur J Dent. 2021 Oct;15(4):720-726. doi: 10.1055/s-0041-1729457. Epub 2021 Jul 7.
This study aimed to evaluate the bond strength between lithium disilicate ceramic and resinous cement when silane (Prosil, FGM) was applied in different amounts of layers under heating or not.
Sixty IPS E-max CAD ceramic (Ivoclar) was used. They were conditioned with 10% hydrofluoric acid for 20 seconds. The samples were distributed in six groups ( = 10): 1Sil, 1 layer of silane without heating; 1SilAq, 1 layer of silane with heating; 2Sil, 2 layers without heating; 2SilAq, 2 layers with heating; 3Sil, 3 layers without heating; and 3SilAq, 3 layers with heating. After each layer, a jet of cold air was applied for 20 seconds in groups 1Sil, 2Sil, 3Sil, and jet of hot air (50°C) in groups 1SilAq, 2SilAq, and 3SilAq. Subsequently, an adhesive layer was applied, and fourcylinders were made on the ceramic with a resin cement AllCemVeneer and photoactivated for 20 seconds. The samples were stored at 37°C for 24 hours and analyzed to the microshear test at EMIC.
Data were submitted to ANOVA and Tukey's test (α = 0.05).
The results showed that there was no statistical interaction between the factors studied. The "heating" factor was not statistically significant; however, the "silane layers" factor showed differences between groups. The analysis of the results showed that the use of one (66%) or two layers (67%) of silane regardless of heating, produced higher values of bond strength, when compared with the group of three layers (62%).
The use of silane with one or two layers provided a greater bond strength between lithium disilicate ceramic and resinous cement and that the heating did not influence the results.
本研究旨在评估在加热或不加热的情况下，不同层数应用硅烷（Prosil，FGM）时二硅酸锂陶瓷与树脂水门汀之间的粘结强度。
使用60个IPS E-max CAD陶瓷（义获嘉）。用10%氢氟酸处理20秒。将样本分为六组（每组n = 10）：1Sil，1层硅烷，不加热；1SilAq，1层硅烷，加热；2Sil，2层，不加热；2SilAq，2层，加热；3Sil，3层，不加热；3SilAq，3层，加热。在1Sil、2Sil、3Sil组中，每层涂覆后施加20秒冷空气流，在1SilAq、2SilAq、3SilAq组中施加热空气流（50°C）。随后，涂覆粘结层，并用树脂水门汀AllCemVeneer在陶瓷上制作四个圆柱体，并光固化20秒。样本在37°C下储存24小时，并在EMIC进行微剪切试验分析。
数据采用方差分析和Tukey检验（α = 0.05）。
结果表明，所研究的因素之间不存在统计学交互作用。“加热”因素无统计学意义；然而，“硅烷层数”因素在组间存在差异。结果分析表明，与三层组（62%）相比，无论是否加热，使用一层（66%）或两层（67%）硅烷时，粘结强度值更高。
使用一层或两层硅烷可在二硅酸锂陶瓷与树脂水门汀之间提供更大的粘结强度，且加热不影响结果。
