تاثير دستگاه ايرپوليش بر ريزنشت دو ماده كامپوزيت فيلتك Z250 و گلاس آينومر ويترمر در ترميم هاي كلاس V

The Effect of Air Polishing System on the Microleakage of Composite and Glass Inomer Cervical Restorations

Introduction: In some studies, ultrasonic scalers could increase the microleakage in teeth restored with tooth colored restorations; in a few others, air polish system caused surface roughness on the tooth colored restoration surfaces. The aim ofthis research was to compare the effect ofair polishing system on microleakage of2250 Filtek composite and Vitremer glass inomer in cervical restorations. Methods: Seventy two extractedpremolar teeth were collected and randomly divided into two equal groups. In all the teeth, standard class V cavities were prepared in cervical regions on the buccal side. Halfofthe teeth were filled with 2250 Filtek composite and the other halfwith Vitremer glass inomer. The specimens were thermo cycled. Halfofthe specimens on each group were subjected to air polish system from 3 mm distance Microscope with 32 magnifications was usedfor microleakage measurements. Results: Air polish system caused increased microleakage in both groups (p value < 0.01) and Vitremer 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 ofcomposite 250 Filtek and Vitremer glass inomer, we advise to use it with caution in teethfilled with composites. It is not advised to use air polish system in teeth filled with glass inomer.