J Korean Acad Conserv Dent.  2005 Jan;30(1):49-57. 10.5395/JKACD.2005.30.1.049.

Microtensile bond strength of all-in-one adhesive to caries-affected dentin

• Moon JD
• Park JK
• Hur B
• Kim HC

• KMID: 1986996
• DOI: http://doi.org/10.5395/JKACD.2005.30.1.049

Abstract

The purpose of this study was to evaluate the effect of multiple application of all-in-one dentin adhesive system on microtensile bond strength to caries-affected dentin. Twenty one extracted human molars with occlusal caries extending into mid-dentin were prepared by grinding the occlusal surface flat. The carious lesions were excavated with the aid of caries detector dye. The following adhesives were applied to caries-affected dentin according to manufacturer's directions; Scotchbond(TM) Multi-Purpose in SM group, Adper Prompt L-Pop(TM) 1 coat in LP1 group, 2 coats in LP2 group, 3 coats in LP3 group, Xeno(R) III 1 coat in XN1 group, 2 coats in XN2 group, and 3 coats in XN3 group. After application of the adhesives, a cylinder of resin-based composite was built up on the occlusal surface. Each tooth was sectioned vertically to obtain the 1 x 1 mm2 sticks. The microtensile bond strength was determined. Each specimen was observed under SEM to examine the failure mode. Data were analyzed with one-way ANOVA. The results of this study were as follows; 1. The microtensile bond strength values were; SM (14.38 +/- 2.01 MPa), LP1 (9.15 +/- 1.81 MPa), LP2 (14.08 +/- 1.75 MPa), LP3 (14.06 +/- 1.45 MPa), XN1 (13.65 +/- 1.95 MPa), XN2 (13.98 +/- 1.60 MPa), XN3 (13.88 +/- 1.66 MPa). LP1 was significantly lower than the other groups in bond strength (p < 0.05). All groups except LP1 were not significantly different in bond strength (p > 0.05). 2. In LP1, there were a higher number of specimens showing adhesive failure. Most specimens of all groups except LP1 showed mixed failure.

Keyword

Caries-affected dentin; Microtensile bond strength; All-in-one adhesive; Failure mode; Multiple application

MeSH Terms

Adhesives*
Dentin*
Humans
Molar
Tooth
Adhesives

Figure

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  Figure 1 Adhesive failure.

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  Figure 2 Mixed failure.

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  Figure 3 Cohesive failure in resin.

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  Figure 4 Cohesive failure in dentin.

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  Figure 5 SEM photomicrograph of the resin/dentin interface produced by Scotchbond™ Multi-Purpose (× 500).

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  Figure 6 SEM photomicrograph of the resin/dentin interface produced by Adper Prompt L-Pop™ 1 coat (× 500).

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  Figure 7 SEM photomicrograph of the resin/dentin interface produced by Adper Prompt L-Pop™ 2 coats (× 500).

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  Figure 8 SEM photomicrograph of the resin/dentin interface produced by Adper Prompt L-Pop™ 3 coats (× 1000).

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  Figure 9 SEM photomicrograph of the resin/dentin interface produced by Xeno® III 1 coat (× 500).

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  Figure 10 SEM photomicrograph of the resin/dentin interface produced by Xeno® III 2 coats (× 500).

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  Figure 11 SEM photomicrograph of the resin/dentin interface produced by Xeno® III 3 coats (× 500).

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