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http://dx.doi.org/10.5395/JKACD.2007.32.4.327

EFFECT OF MICROLEAKAGE OF A SELF-ETCHING PRIMER ADHESIVE ACCORDING TO TYPES OF CUTTING INSTRUMENTS  

Kim, Yong-Hee (Department of Conservative Dentistry, College of Dentistry, Chosun University)
Park, Jae-Gu (Department of Conservative Dentistry, College of Dentistry, Chosun University)
Cho, Young-Gon (Department of Conservative Dentistry, College of Dentistry, Chosun University)
Publication Information
Restorative Dentistry and Endodontics / v.32, no.4, 2007 , pp. 327-334 More about this Journal
Abstract
The purpose of this study was to evaluate the effect of burs on microleakage of Class V resin restorations when a self-etching primer adhesive was used. Forty Class V cavities were prepared with four different cutting burs on extracted third molars, and divided into one of four equal groups (n = 10); Group 1-plain cut carbide bur (no. 245), Group 2-cross cut carbide bur (no. 557), Group 3-fine diamond bur (TF-21F), Group 4-standard diamond bur (EX-41). The occlusal and gingival margin of cavities was located in enamel and dentin, respectively. Cavities were treated with Clearfil SE Bond and restored with Clearfil AP-X. Specimens were thermocycled, immersed in a 2% methylene blue solution for 24 hours, and bisected longitudinally. They were observed leakages at enamel and dentinal margins. Data were analyzed using Mann-Whitney and Wilcoxon signed ranked test. The results of this study were as follows; 1. At enamel margin, microleakage of group 4 was statistically higher than those of group 1, 2 and 3 (p < 0.01). 2. At dentinal margin, microleakage of group 4 was statistically higher than group 3 (p < 0.01), but group 1 and 2 were not statistically different with group 3 and 4. 3. Enamel microleakage was statistically higher than dentinal microleakage in group 1, 2 and 3 (p < 0.05), but statistical difference between the microleakage of enamel and dentinal margin was not in Group 4. In conclusion, the use of coarse diamond bur showed high microleakage at both enamel and dentinal margin when Clearfil SE Bond was used in class V cavity.
Keywords
Microleakage; Self-etching primer; Cutting instruments; Smear layer;
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Times Cited By KSCI : 1  (Citation Analysis)
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