EFFECT OF TAPER DESIGN AND APICAL PREPARATION ON THE QUALITY OF FILLING OF CALCIUM HYDROXIDE INTRA CANAL MEDICAMENT DELIVERED INTO SEMI CURVED CANALS BY THREE DIFFERENT TECHNIQUES: A RADIOGRAPHIC ANALYSIS

Abstract

Using an effective method for completely filling canals with calcium hydroxide paste may enhance its extent complex root canal system. Calcium hydroxide is still placed into canals by classical master apical file or lentulospiral. We have taken the present study with the aim to evaluate the efficacy of ultrasonic U file, lentulospiral, M4 headpiece and master apical file in placing calcium hydroxide into canals. In eighty extracted mandibular premolars canal preparation was done up to master apical file of F3. Samples were divided into four equal groups. Calcium hydroxide paste was places with an ultrasonic U file, #30K file attached on M4 handpiece, #30 Luentulospiral and #40 Master apical gutta percha. Radiographs were taken and scored by two examiners. Kruskal-Wallis analysis of variance test was used to determine statistical differences. Results of the present study showed that Ca(OH)2, delivered by ultrasonic U file and by lentulospiral  provided satisfactory fillings than M4 activation of file and master apical gutta percha.
Keywords: calcium hydroxide, placement technique, medicament filling,radiographic