Comparison of microtensile bond strength of a resin composite to enamel conditioned by acid etching and Er,Cr:YSGG laser in human primary teeth

被引：4

作者：

Malekafzali B. ^{[1
]}

Fekrazad R. ^{[2
]}

Mirfasihi A. ^{[3
]}

Saedi S. ^{[3
]}

机构：

[1] Department of Paediatric Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran

[2] Laser Research Center in Medical Sciences (LRCMS), Periodontal Department, Dental Faculty, AJA University of Medical Sciences, Tehran

[3] Dental School, Shahid Beheshti University of Medical Sciences, Daneshjou Blv. Evin St, Tehran

来源：

European Archives of Paediatric Dentistry | 2015年 / 16卷 / 1期

关键词：

Enamel conditioning; Er; Cr:YSGG laser; Microtensile bond strength; Primary tooth;

D O I：

10.1007/s40368-014-0149-5

中图分类号：

学科分类号：

摘要：

Aim: This study was designed to compare the bond strength of composite resin restorations on the buccal surface of primary human canine after conditioning by conventional acid etching and Er,Cr:YSGG laser. Methods: Twenty sound primary canines were cut buccolingually into two halves and each half was randomly placed in Er,Cr:YSGG laser or acid etch group. The samples in the acid etch group were etched with 37 % phosphoric acid for 30 s. The samples in the laser group were prepared by Er,Cr:YSGG laser. The G6-Tips and 600 µm diameter were used with a 1.5 W of power output, pulse duration of 140 µs and repetition rate of 20 Hz. The bonding agent was applied on the buccal surface of each sample and layers of resin composite were placed. The samples’ bond strengths were evaluated by a microtensile test instrument. Results: The mean of microtensile bond strength was 18.55 ± 6.41 in the laser group and 24.62 ± 5.56 in acid etch group. Microtensile bond strength achieved by laser conditioning was significantly lower than microtensile bond strength achieved by the conventional acid etching. Statistics To compare the results between the acid etch and laser group, the paired t test was performed (p value < 0.001). Conclusion: Conditioning enamel in primary teeth by Er,Cr:YSGG laser, cannot be used as an alternative method for acid etching and cannot substitute this conventional method. © 2014, European Academy of Paediatric Dentistry.

引用

页码：57 / 62

页数：5

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