s followed by group 3, 1 and 2. Post – hoc tests show that the skini syringe with navitip was the best among the 4 root canal filling techniques followed by endodontic pressure syringe, lentulospiral and insulin syringe.

DISCUSSION

The primary aim of this study was to compare the pre and postobturated volumes of root canals filled by the four different obturating techniques namely lentulospiral, insulin syringe, endodontic pressure syringe and skini syringe with navi tip using CBCT technique. The present study was therefore designed to keep the two factors constant- use of single technique of biomechanical preparation and a single obturating material and then assessing the quality of fill by the four different techniques using CBCT. Zinc oxide eugenol (ZOE) is one of the most widely used preparations for primary tooth pulpectomies as several authors have reported moderate to high success rate in preserving chronically infected teeth using this material. Therefore, in the present study ZOE was chosen as a root canal filling material. The difference in the consistencies of the ZOE mixtures was attributable to the physical limitations of the different techniques. Consequently, in all the four techniques ZOE mixtures were prepared according to manufacturer’s recommendation or technique limitations. It has been reported in the literature that all of the techniques used in the present study- lentulospirals, insulin syringe, endodontic pressure syringe and skini syringe with navi tip can deliver ZOE to optimally fill the root canals of primary teeth.

The depth and quality of fill of the root canal filling technique for primary teeth can be done by evaluating and comparing through 3-D imaging system like CBCT. In 2000, limited cone beam computed tomography (LCBCT) was introduced for 3D imaging of dentoalveolar regions at a lower radiation dose and cost compared with CT. CBCT has cone shaped X-ray beam that captures a cylindrical or spherical 3D volume of data using a simple and direct relationship between beam source and sensor. One of the major advantages is that the clinician can easily apply simple software to evaluate the areas of interest in any plane. This technique can provide more accurate 3D information in both pre and post-treatment assessment of root canals that are highly accurate and quantifiable