EVALUATION OF COMPOSITE RESIN RESTORATIONS FOllOWING KINETIC AND MECHANICAl CAVITY I PREPARATION IN PERMANENT AND PRIMARY TEETH I

Abstract

The present study was conducted to evaluate the clinical performance of composite resin restoration following kinetic and mechanical cavity preparation in permanent and primary teeth. In addition to that, these two techniques were compared in terms of microleakage assessment, scanning electron microscope examination and shear bond strength test. I Clinical study I A total of 80 Class I cavity preparations were prepared (in 40 I permanent first molars and 40 primary second molars) of 20 children with an age range from 6 to 9 years. They were divided into two groups according to the technique of cavity preparation. Twenty permanent first molars and 20 primary second molars were prepared with air-abrasive technique and 20 permanent first molars and 20 primary second molars were prepared I mechanically.

Both groups were etched with 35% phosphoric acid and restored using

Scotchbond Multipurpose Adhesive System and ZlOO composite, according to I the manufacturer.

I Direct clinical evaluation was performed at 48 hours, 6 and 12 months using modified Ryge and Snyder criteria. Indirect evaluation has been I performed using Replica technique and examination was done using scanning electron microscope (SEM) at 48 hours, 6 and 12 months periodically. I The results showed that the clinical performance of the group prepared with alr•abraslon was more successful than mechanically prepared group In permanent and primary teeth, although there was no statistical significant difference between both groups. I I