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. 2012 Jan;3(1):19-23.
Epub 2012 May 3.

Microleakage in class V gingiva-shaded composite resin restorations

Claudio Poggio  1 , Marco Chiesa, Alberto Dagna, Marco Colombo, Andrea Scribante
Affiliations

Microleakage in class V gingiva-shaded composite resin restorations

Claudio Poggio et al. Ann Stomatol (Roma). 2012 Jan.

Abstract

The purpose of this study was to evaluate the microleakage in Class V cavities restored with a new gingiva-shaded microhybrid composite resin and with a conventional microhybrid composite resin using three different dentin bonding systems (DBS). Class V cavities were prepared in sixty freshly extracted human teeth with the incisal margin in enamel and the apical margin in dentin/cementum. Restored specimens, after thermocycling, were placed in 2% methylene blue solution for 24 hours. Longitudinal sections were obtained and studied with a stereomicroscope for assessment of the microleakage according to degree of dye penetration (scale 0-3). Data were analyzed with Kruskal-Wallis test and with Mann-Whitney U-test.IN THIS STUDY THERE WAS NO LEAKAGE IN ENAMEL: all the cavities showed no dye penetration at the incisal margins (located in enamel). None of the DBS used eliminated microleakage in apical margins (located in dentin or cementum): three-step total-etch and single-step self-etch were more effective in reducing microleakage in dentin margins when compared with two-step total-etch. This in vitro study concluded that microleakage in Class V cavities restored with the composite resins tested is similar.

Keywords: dentin bonding systems; gingiva-shaded composite resin; microleakage.

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Figures

Figure 1
Figure 1
Representative stereomicroscopic photograph of group 1 (Solobond Plus + Amaris Gingiva) original magnification 25x.
Figure 2
Figure 2
Representative stereomicroscopic photograph of group 2 (Solobond Plus+Amaris) original magnification 25x.
Figure 3
Figure 3
Representative stereomicroscopic photograph of group 3 (Solobond M+Amaris Gingiva) original magnification 25x.
Figure 4
Figure 4
Representative stereomicroscopic photograph of group 4 (Solobond M + Amaris) original magnification 25x.
Figure 5
Figure 5
Representative stereomicroscopic photograph of group 5 (Futurabond NR+Amaris Gingiva) original magnification 25x.
Figure 6
Figure 6
Representative stereomicroscopic photograph of group 6 (Futurabond NR+Amaris) original magnification 25x.
See this image and copyright information in PMC

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