Influence of different surface protocols on dentin bond strength irradiated with Er,Cr:YSGG laser

被引：0
作者：
Valinhos Piccioni M.A.R. [1 ]
Girotto A.C. [1 ]
Saad J.R.C. [1 ]
de Campos E.A. [1 ]
机构：
[1] School of Dentistry of Araraquara, Universidade Estadual Paulista-UNESP, São Paulo, Rua Humaitá, 1680, SP, Araraquara
来源：
Lasers in Dental Science | 2019年 / 3卷 / 1期
关键词：
Dentin; Laser; Microshear bond strength; Self-etch adhesives;
D O I：
10.1007/s41547-019-00052-z
中图分类号：
学科分类号：
摘要：
Objectives: The aim of this study was to evaluate the influence of Er,Cr:YSGG laser irradiation on the bond strength of different self-etch adhesives systems in normal and artificially hypermineralized dentin. Method: Two hundred forty healthy bovine incisors were selected. The specimens were randomly divided into two different groups according to the type of dentin. The teeth of each group were randomly divided into five subgroups according to the adhesive system used: Clearfil SE Bond (Kuraray) and Single Bond Universal (3M ESPE). Each subgroup received different treatments: (1) adhesive system (control); (2) acid etching + laser etching + adhesive system; (3) laser etching + acid etching + adhesive system; (4) acid etching + adhesive system; and (5) laser etching + adhesive system. Matrices were positioned, filled with composite resin, and photoactivated for 40 s. After storage period of 24 h in a humid environment, the specimens were submitted to microshear bond strength testing. Subsequently, the fracture pattern of each sample was determined. Four specimens per group were prepared in order to evaluate the interface and/or appearance of resin tags. The data of microshear bond strength (μSBS) were analyzed by two-way ANOVA and Tukey’s (p < 0.05). Results: Lower μSBS values were found for the (3) and (5) in experiments with both adhesives. Conclusion: Single Bond Universal self-etching adhesive, after preliminary etching with phosphoric acid, showed highest μSBS values for both substrates in accordance with the manufacturer’s recommendations. The μSBS values were higher for the control treatment using Clearfil SE Bond for both substrates. It may be possible the option of employing the Clearfil SE Bond in dentin sclerotic without the need for complementary etching treatment. © 2019, Springer Nature Switzerland AG.
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页码：43 / 51
页数：8
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