Abstract

Introduction:
The oval-shaped canals are challenging to clean as the cross-section of the canals is oval and the file is triangular making cleaning and shaping a challenge. This enables bacteria and organic debris to cause pathogenesis of apical periodontitis in root canal treated teeth. The TruShape 3D and Xp Endo Shaper have improved metallurgy that imparts greater flexibility. The present study has focused on the ability to disinfect root filled teeth.


Methodology:
Based on the radiographic criteria the teeth with oval-shaped canals were selected and using the E faecalis strain 29212 they were inoculated with using BHI in tubes placed in an incubator. After 4 weeks the teeth were divided into 3 groups : Group 1: TruShape 3D , Group 2: Xp Endo Shaper and Group 3: Protaper Gold. Baseline sampling S1 was done, after instrumentation S2 sampling was done. The paper points were used that were plated on Columbia agar with sheep blood and then the colonies were counted.

Results:
The One Way Anova , Tuckeys post Hoc tests were used . The results were statistically significant. Protaper had 60% percentage decrease in CFU, TruShape 3D showed 57% decrease and 55% decrease was reported for XP Endo Shaper.

Conclusion:
TruShape 3D is more suitable for oval-shaped canals than XP Endo Shaper, However more studies are required on this topic.

Key words: Oval-Shaped Canals,TruShape 3D, Xp Endo Shaper