Effect of Time of Interradilarcular Preparation on Apical Microleakage of Endodontically Treated Teeth

Abstract

Purpose: This study was conducted to evaluate apical leakage of post space preparation when performed at different time intervals immediately after root canal obturation (after setting of the sealer used) or delayed after two weeks. Materials and methods: Forty-five extracted human anterior single rooted teeth were selected and placed in sterile physiologic saline solutions. Teeth were decoronated perpendicular to their long axis and 2mm above the cemento-enamel junction (CEJ). The canals were filed to mater apical file size #40 using step-back tech. The root canals were enlarged and flared to size #55. The specimens were divided randomly into 3 equal groups(15 samples each) , according to type of sealer that used during root canal treatment group Professor and Chairman