Journal of Conservative Dentistry
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Year : 2003  |  Volume : 6  |  Issue : 1  |  Page : 13-17

Evaluation Of Microleakage Of Glass Ionomer Sealant In Etched And Non-Etched Enamel – A Stereomicroscopic Study



Correspondence Address:
Dheeraj Setia


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A stereomicroscopic microleakage study was conducted to test whether etching of enamel would improve adhesion of glass ionomer sealants to non-invasive fissure enamel. Forty eight extracted human premolars were divided into 2 equal groups, their crowns were cleaned with pumice and stored in 0.5% thymol solution. In group 1, enamel was etched for 45 seconds with 37% phosphoric acid and in group 2, enamel was not etched. Glass ionomer sealant was applied to all 48 teeth, then they were thermocycled in water (120 cycles between 0o and 56oC) and stained with 0.5% methylene blue solution. Teeth were sectioned at cervix, roots were discarded, crowns were sectioned in buccolingual direction by microtome. Statistically significant difference in amounts of microleakage were found in group 1 and group 2. Minimum microleakage was detected in 66.7% of the etched teeth, whereas extensive microleakage was observed in 55% of non-etched teeth. Results suggested that etching prior to application enhances the bonding of glass ionomer sealant to fissure enamel.


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