Evaluation of Different Root Canal Obturation Methods in Primary Teeth Using Cone Beam Computerized Tomography.

Objective: To evaluate the efficiency of 3 different obturation techniques; motor driven lentulospiral, hand held lentulospiral and reamer in primary anterior teeth and presence of voids by analyzing with CBCT.

Study Design: 60 single rooted extracted primary teeth were prepared and obturated with ZOE paste. Obturation methods were divided into three groups. GROUP I- motor driven lentulo spiral, II- hand held lentulo spiral and III- reamer. Obturated samples were scanned in CBCT machine and images were analysed for the evaluation of their quality of fill comprising presence, location and size of voids.

Results: At all the locations, Group II had maximum number of sites with voids when compared to other two groups. However, statistically significant intergroup differences were observed only at coronal third location (p=0.001) and overall assessment (p=0.003). Number of affected sites revealed the difference between Groups I and II be significant statistically (p=0.002) while the difference between Groups I and III and between Groups II and III was not significant statistically (p>0.05). At all the locations as well as for combined assessment, Group I had minimum mean size of the void.

Conclusion: Motor driven lentulo spiral technique demonstrated more number of optimal fills with fewer voids when compared to hand held lentulo spiral technique and reamer.