Evaluation of the Effect of Ultrasonic and Sonic Activation Systems on Root Canal Filling Quality in Resin Primary Molars: in vitro Study

Abstract

Objective: The aim of this study is to evaluate the effect of different filling methods on canal filling quality in resin primary molar teeth prepared with two different preparation techniques. Mate- rial and Methods: For the study, 60 maxillary primary second molar teeth obtained from resin block were used. Root canals were prepared using a manual #K-file (n=30) and a VDW Rotate™ System (n=30) rotary instrument. Each group was divided into 3 subgroups according to the filling technique used (n=10): Calci-Paste ® syringe (control group); Calci-Paste ® syringe and Uc-One ® (ultrasonic activation); Calci-Paste® syringe and Eddy ® (sonic activation). The quality of the canal filling (under filled, optimal filled, overfilled) and the pres- ence/absence of voids were assessed using cone beam computed to- mography. SPSS (Statistical Package for Social Science, IBM SPSS®, version 26, Chicago, USA) program was used for statistical analysis. Results: There was no significant difference between the different preparation and filling techniques in terms of filling volume and length, In the study, voids were detected in all three filling methods, but the highest void filling was found in the Calci-Paste ® syringe +ultrasonic activation group (48%). The manual preparation and syringe group had the most optimally filled teeth but there was no significant difference between the groups (For preparation methods p=0.573; for filling meth- ods p=0.976). Conclusion: In this study, it was found that sonic and ul- trasonic systems did not improve the quality of root canal filling in resin primary molars and ultrasonic activation caused more voids.