Effect of cutting instruments on the dentin bond strength of a self-etch adhesive

Young-Gon Lee; So-Ra Moon; Young-Gon Cho

doi:10.5395/JKACD.2010.35.1.013

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Basic Research Effect of cutting instruments on the dentin bond strength of a self-etch adhesive: Young-Gon Lee, So-Ra Moon, Young-Gon Cho; Journal of Korean Academy of Conservative Dentistry 2010;35(1):13-19.
DOI: https://doi.org/10.5395/JKACD.2010.35.1.013
Published online: January 31, 2010

Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea.

Corresponding Author: Young-Gon Cho. Department of Conservative Dentistry, Chosun University, 421 Seosuk-dong, Dong-gu, Gwangju, 501-825, Korea. Tel: 82-62-220-3840, Fax: 82-62-232-9064, ygcho@chosun.ac.kr

• Received: November 22, 2009 • Revised: December 18, 2009 • Accepted: December 28, 2009

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Abstract
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Abstract

The purpose of this study was to compare the microshear bond strength of a self-etching primer adhesive to dentin prepared with different diamond points, carbide burs and SiC papers, and also to determine which SiC paper yield similar strength to that of dentinal surface prepared with points or burs.

Fifty-six human molar were sectioned to expose the occlusal dentinal surfaces of crowns and slabs of 1.2 mm thick were made. Dentinal surfaces were removed with three diamond points, two carbide burs, and three SiC papers. They were divided into one of eight equal groups (n = 7); Group 1: standard diamond point(TF-12), Group 2: fine diamond point (TF-12F), Group 3: extrafine diamond point (TF-12EF), Group 4: plain-cut carbide bur (no. 245), Group 5: cross-cut carbide bur (no. 557), Group 6 : P 120-grade SiC paper, Group 7: P 220-grade SiC paper, Group 8: P 800-grade SiC paper.

Clearfil SE Bond was applied on dentinal surface and Clearfil AP-X was placed on dentinal surface using Tygon tubes. After the bonded specimens were subjected to uSBS testing, the mean uSBS (n = 20 for each group) was statistically compared using one-way ANOVA and Tukey HSD test.

In conclusion, the use of extrafine diamond point is recommended for improved bonding of Clearfil SE Bond to dentin. Also the use of P 220-grade SiC paper in vitro will be yield the results closer to dentinal surface prepared with fine diamond point or carbide burs in vivo.
Keywords: Dentin surface roghness; Microshear bond strength; Self-etch adhesive; Diamond points; Carbide burs; SiC papers

REFERENCES

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Table 1

Group classification by type and coarseness of bur

( ): grit size of diamond burs and SiC (Silicon Carbide) papers

Table 2

Mean microshear bond strength (MPa) to dentin

G1: Standard diamond, G2: Fine diamond, G3: Extrafine diamond,G4: Cross-cut carbide bur, G5: Plain-cut carbide bur, G6: P 120-grade SiC paper, G7: P 220-grade SiC paper, G8: P 800-grade SiC paper. Superscripts of the other letter indicate values of statistically significant difference by Tukey HSD statistics

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Effect of cutting instruments on the dentin bond strength of a self-etch adhesive

J Korean Acad Conserv Dent. 2010;35(1):13-19. Published online January 31, 2010

DOI: https://doi.org/10.5395/JKACD.2010.35.1.013

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Effect of cutting instruments on the dentin bond strength of a self-etch adhesive

Table 1

Group classification by type and coarseness of bur

( ): grit size of diamond burs and SiC (Silicon Carbide) papers

Table 2

Mean microshear bond strength (MPa) to dentin

Table 1 Group classification by type and coarseness of bur

( ): grit size of diamond burs and SiC (Silicon Carbide) papers

Table 2 Mean microshear bond strength (MPa) to dentin