مجله دانشکده دندانپزشکی اصفهان (Jan 2008)
The effect of air polishing system on the microleakage of composite and glass inomer cervical restorations
Abstract
Introduction: In some studies, ultrasonic scalers could increase the microleakage in teeth restoredwith tooth colored restorations; in a few others, air polish system caused surface roughness on thetooth colored restoration surfaces. The aim of this research was to compare the effect of airpolishing system on microleakage of Z250 Filtek composite and Vitremer glass inomer in cervicalrestorations.Methods: Seventy two extracted premolar teeth were collected and randomly divided into twoequal groups. In all the teeth, standard class V cavities were prepared in cervical regions on thebuccal side. Half of the teeth were filled with Z250 Filtek composite and the other half withVitremer glass inomer. The specimens were thermo cycled. Half of the specimens on each groupwere subjected to air polish system from 3 mm distance Microscope with 32 magnifications wasused for microleakage measurements.Results: Air polish system caused increased microleakage in both groups (p value < 0.01) andVitremer glass inomer had significantly more leakage than composite 250 Filtek (p value < 0.001).Leakage at the enamel margins was significantly less than at the dentin margin in both two groups ,but the difference was only statistically significant for Vitremer glass inomer (p value < 0.05).Discussion: As air polish system application causes increased microleakage of composite 250Filtek and Vitremer glass inomer, we advise to use it with caution in teeth filled with composites. Itis not advised to use air polish system in teeth filled with glass inomer.Key words: Composite, Gloss inomer, Air polish system, Microleakage.
