Original Articles
Evaluation of Glass Ionomer Cement Restoration after Chemo-mechanical Removal of Caries
2018 Volume 61 Issue 3 Pages 190-199
Details
2018 Volume 61 Issue 3 Pages 190-199
Purpose: The purpose of this study was to evaluate the adhesive interface of both the cavity surface and glass ionomer cement after removing carious dentin by hand instrument by applying a chemo-mechanical caries removal agent and filling the site using several types of glass ionomer cement.
Methods: Twenty-five extracted human permanent teeth with cervical dental caries were used in this study. The chemo-mechanical caries removal agent was applied to the carious dentin surface that had been prepared using a prototype agent containing 10% bromelain and 20% limonene, then carious dentin was removed using a spoon excavator. After observing the cavity surface by stereomicroscopy, all specimens were divided into five groups of five teeth each. Each cavity was filled with Fuji IXGP EXTRA as a conventional glass ionomer cement, HY-BOND RESIGLASS as a resin-modified glass ionomer cement, and G-CEM, Adshield RM, IONOTITE-F as resin-type glass ionomer cements in each group. After 10,000 cycles of thermal cycling, a micro-leak test was performed. Finally, all specimens were bisected using a diamond saw disk, and observed by a scanning electron microscope (SEM).
Results: The micro-leakage test showed no specimens with no leakage. The highest leakage was observed in the Fuji IXGP EXTRA group. The specimens of the other four groups that were filled using resin-type glass ionomer cements showed similar good conditions with slight leakage. In the SEM observation, many specimens of the Fuji IXGP EXTRA group showed the formation of a gap between the cavity surface and glass ionomer cement, whereas the other four groups using resin-type glass ionomer cements showed almost no such gap formation.
Conclusion: Based on these results, resin-type glass ionomer cements are recommended as a better filling material than conventional glass ionomer cements for cavities in which chemo-mechanical caries removal agents and hand instruments have been used.
