Effects of different preparation techniques on the microleakage of compomer and resin fissure sealants

PubMed ID: 14998210Purpose: The aim of this study was to compare the microleakage of a compomer and resin sealant in vitro using different surface preparation techniques. Methods: Microleakage of a compomer (Dyract Seal, De Trey) and a resin sealant (Helioseal F, Vivadent) was investigated on 125 intact third molars. Materials and the surface preparation techniques were: Group 1- phosphoric acid (37%)+Helioseal F; Group 2 - AlO2 air abrasion+Helioseal F; Group 3 - nonrinse conditioner (NRC)+Prime&Bond+Dyract Seal; Group 4 - phosphoric acid+Dyract Seal; Group 5 - AlO2 air abrasion+Dyract Seal. Results: Pretreatment with phosphoric acid produced the lowest microleakage scores when applied with compomer and resin fissure sealants and there was no statistical difference (P>.05). Conclusions: Compomer sealant used with a nonrinse conditioner (NRC) was not as successful as pretreatment with phosphoric acid etching, whereas AlO2 air abrasion pretreatment was ineffective in preventing microleakage in both sealants