Comparison of Different Rotary Files and Dentinal Damage During Root Canal Treatment Seen in Stereomicroscope.

Abstract

Background: this study was conducted to assess the Comparison of different rotary files and dentinal damage during root canal treatment seen in stereomicroscope.

Material and methods: 5 experimental groups of twenty teeth each were formed from 100 freshly extracted mandibular premolars, and biomechanical preparation was carried out on each group. Unprepared teeth were in Group I, hand files were used in Group II, ProTaper rotary instruments were used in Group III, K3 rotary instruments were used in Group IV, and Easy RaCe rotary instruments were used in Group V. Following that, roots were cut horizontally 3, 6, and 9 mm from the apex, and they were examined under a stereomicroscope. Defects in the dentin were discovered. Chi-square analysis was used to examine groups.

Results: the groups were significantly different from each other (P = 0.006). Group I showed no defected roots. Dentinal defects were found in the Hand K-file, ProTaper, K3 SybronEndo, and Easy RaCe rotary groups. But the difference was nonsignificant among all rotary systems used in this study. Results showed that nonsignificant differences were present for the presence of dentinal defects.

Conclusion: use of rotary instruments could result in an increased chance for dentinal defects as compared to hand instrumentation.