Assessment of shear bond strength and microleakage of fissure sealant following enamel deproteinization: An in vitro study.

G Bayrak,Y Yildirim,S Selvi-Kuvvetli,D Ozturk,E Gurdogan-Guler

doi:10.4317/jced.56281

G Bayrak, Y Yildirim + Show 3 more

Open Access

https://doi.org/10.4317/jced.56281

Copy DOI

Abstract

BackgroundTo evaluate the effect of two different deproteinizing agents (5.25% sodium hypochlorite and Papacarie®) prior to acid etching on the shear bond strength and microleakage of a fissure sealant material. Material and MethodsA total of 123 extracted noncarious human third molar teeth were randomly divided into three groups for each test: acid etching alone (control) (C), sodium hypochlorite (NaOCl), and Papacarie Duo® (PC). The shear bond strength tests were performed using a universal testing machine, and microleakage was evaluated using a dye penetration method. ResultsThe mean shear bond strength values obtained in Group C were significantly lower than those of Group NaOCl and Group PC (p=0.0001). There were no significant differences between Group NaOCl and Group PC (p>0.05). No statistically significant difference was observed among the groups in terms of microleakage (p>0.05). ConclusionsPapacarie Duo® and 5.25% sodium hypochlorite treatments before etching increased the shear bond strength of the fissure sealant. However, pre-treatment with these agents did not decrease the microleakage between teeth and sealant. Key words:Deproteinization, microleakage, papain, dental seal, shear bond strength.

Highlights

Pit and fissure sealants are commonly used to prevent caries formation in permanent molars, especially in individuals with a higher risk of dental caries
Garrocho-Rangel et al [9] demonstrated that 5.25% NaOCl deproteinization prior to enamel etching resulted in lower rates of microleakage between the enamel surface and the fissure sealant material than conventional H3PO4 etching alone
Other studies concluded that deproteinization prior to or after etching did not change the topographic features of the enamel surface; the use of 37% H3PO4 alone remains the best method for enamel pretreatment [11,13]

Summary

Introduction

Pit and fissure sealants are commonly used to prevent caries formation in permanent molars, especially in individuals with a higher risk of dental caries. The effects of enamel deproteinization using 5.25% sodium hypochlorite (NaOCl) prior to phosphoric acid (H3PO4) on the etching patterns as well as on the shear bond strength have been investigated previously [11,12,13]. Garrocho-Rangel et al [9] demonstrated that 5.25% NaOCl deproteinization prior to enamel etching resulted in lower rates of microleakage between the enamel surface and the fissure sealant material than conventional H3PO4 etching alone. To evaluate the effect of two different deproteinizing agents (5.25% sodium hypochlorite and Papacarie®) prior to acid etching on the shear bond strength and microleakage of a fissure sealant material. Conclusions: Papacarie Duo® and 5.25% sodium hypochlorite treatments before etching increased the shear bond strength of the fissure sealant. Pre-treatment with these agents did not decrease the microleakage between teeth and sealant

Methods

Results

Discussion

Conclusion