J Korean Acad Conserv Dent.  2011 Nov;36(6):477-482. 10.5395/JKACD.2011.36.6.477.

Microshear bond strength of a self-etching primer adhesive to enamel according to the type of bur

Affiliations
  • 1Department of Conservative Dentistry, Chosun University School of Dentistry, Gwangju, Korea. ygcho@mail.ac.kr
  • 2Department of Dental Hygiene, SeoYeong University, Gwangju, Korea.

Abstract


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 microm) diamond bur; Group 2, standard (106 - 125 microm) diamond bur; Group 3, fine (53 - 63 microm) diamond bur; Group 4, extrafine (20 - 30 microm) 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.

Keyword

Bond strength; Enamel; Self-etching primer adhesive; Type of bur

MeSH Terms

Adhesives
Dental Enamel
Diamond
Humans
Methacrylates
Molar
Resin Cements
Adhesives
Diamond
Methacrylates
Resin Cements

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