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KMID : 0362320110360060477
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Journal of Korean Academy of Operative Dentistry
2011 Volume.36 No. 6 p.477 ~ p.482
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Microshear bond strength of a self-etching primer adhesive to enamel according to the type of bur
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Jeong Jin-Ho
Cho Young-Gon
Lee Myung-Seon
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Abstract
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Objectives:The purpose of this study was to compare the microshear bond strength (uSBS) to enamel prepared with different burs and to determine what type of bur were chosen when a self-etching primer adhesive was used
Materials and Methods:Enamel of forty-two human molars were used. They were divided into one of six groups (n = 7), Group 1, coarse (125 - 150 μm) diamond bur; Group 2, standard (106 - 125 μm) diamond bur; Group 3, fine (53 - 63 μm) diamond bur; Group 4, extrafine (20 - 30 μm) diamond bur; Group 5, plain-cut carbide bur (no. 245); Group 6, cross-cut carbide bur (no. 557). Clearfil SE Bond and Clearfil AP-X (Kuraray Medical Inc.) was bonded to enamel surface. The bonded specimens were subjected to uSBS testing
Results:The uSBS of Group 4 was the highest among groups and it was significantly higher than that of Groups 1, 2, 3, and 6 (p < 0.05), but it was not significantly different from that of Group 5.
Conclusions:Different burs used on enamel surface affected the microshear bond strengths of a self-etching primer adhesive to the enamel surface. In the case of Clearfil SE Bond, extrafine diamond and plain-cut carbide bur are recommended for bonding to enamel.
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KEYWORD
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Bond strength, Enamel, Self-etching primer adhesive, Type of bur
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