J Dent Rehabil Appl Sci.  2018 Jun;34(2):89-96. 10.14368/jdras.2018.34.2.89.

Effect of delayed time, surface treatment, and repair material on shear bond strength of repaired bis-acryl composite resin

• Park JS
• Lee JI

• KMID: 2422650
• DOI: http://doi.org/10.14368/jdras.2018.34.2.89

Abstract

PURPOSE
The aim of this study was to evaluate the effect of delayed time, surface treatment, and repair materials on repair of bisacryl composite resin through comparison of shear bond strength and to evaluate the utility of bis-acryl composite resin repair using polymethyl methacrylate resin.
MATERIALS AND METHODS
A total of 90 bis-acryl composite resin specimens were fabricated and classified into 9 test groups, each of 10 pieces according to delayed time, surface treatment and repair material. The shear bond strength of each specimen was measured using a universal testing machine immediately after fabrication and analyzed using a statistical analysis program (IBM SPSS statistics 20). After the shear bond strength measurement, the fracture surface of the specimen was observed.
RESULTS
The highest shear bond strength (17.54 ± 3.14 MPa) was observed in the experimental group bonded immediately with a light-curing flowable composite resin using a bonding agent.
CONCLUSION
When repairing bis-acryl composite resin, it is necessary to consider whether to remake according to the delayed time. For effective repair, it is desirable to consider appropriate materials and surface treatment methods according to the site or purpose of use.

Keyword

bis-acryl composite resin; polymethylmethacrylate resin; bonding agent; silane; provisional restoration repair

MeSH Terms

Polymethyl Methacrylate
Polymethyl Methacrylate

Figure

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  Fig. 1 Fabricated specimen.

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  Fig. 2 Shear bond strength test.

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  Fig. 3 Failure mode of specimens. (A) Adhesive failure, (B) Cohesive failure, (C) Mixed failure.

Reference

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