J Korean Acad Conserv Dent.  2008 Mar;33(2):125-132. 10.5395/JKACD.2008.33.2.125.

The effect of different bonding systems on shear bond strength of repaired composite resin

• Seon EM
• Kim HC
• Hur B
• Park JK

• KMID: 1986757
• DOI: http://doi.org/10.5395/JKACD.2008.33.2.125

Abstract

The purpose of this study is to compare the shear bond strength of repaired composite resin with different bonding agents and evaluate the effect of bonding agents on composite repair strength. Forty composite specimens (Z-250) were prepared and aged for 1week by thermocycling between 5 and 55degrees C with a dwell time of 30s. After air abrasion with 50 microm aluminum oxide, following different bonding agents were applied (n = 10); SB group: Scotchbond multipurpose adhesive (3 step Total-Etch system); SE group: Clearfil SE bond (2 step Self-Etch system); XP group: XP bond (2 step Total-Etch system); XE group: XenoIII (1 step Self-Etch system). After bonding procedure was completed, new composite resin (Z-250) was applied to the mold and cured. For control group, 10 specimens were prepared. Seven days after repair, shear bond strength was measured. Data was statistically analyzed using one-way ANOVA and Tukey's test (p < 0.05). The means and standard deviations of shear bond strength (MPa +/- S.D.) per group were as follows: SB group: 17.06; SE group: 19.10; XP group: 14.44; XE group: 13.57; Control Group: 19.40. No significant difference found in each group. Within the limit of this study, it was concluded that the different type of bonding system was not affect on the shear bond strength of repaired composite resin.

Keyword

Composite repair; Aluminum oxide sandblasting; Bonding system; Shear bond strength

MeSH Terms

Adhesives
Aged
Aluminum Oxide
Fungi
Humans
Resin Cements
Adhesives
Aluminum Oxide
Resin Cements

Figure

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  Figure 1 Shear bond test machine.

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