Efficacy of Protaper Universal , R Endo , Peezo Reamer on gutta percha removal : A stereomicroscopic analysis

Aim: The aim of this study is to compare the efficacy of Protaper Universal,R-Endo,Peezo Reamer for gutta percha removal during re-treatment by stereomicroscopic analysis. Materials and methods: A total of 20 extracted human maxillary single rooted teeth were selected. Canal preparation was carried out by the sequential use of Kfiles up to size 30 at working length and then divided into one control group(n=5)that is group I and three experimental groups II,III,IV (n=5 each).The experimental groups were obturated by lateral compaction of gutta percha using zinc oxide eugenol sealer. During retreatment xylene severed as solvent in all groups. In group II Protaper Universal ,group III R-Endo, group IV Peezo Reamer were used for gutta percha removal. Stereomicroscope was used to check the efficacy and statistically analysed. Results: Among the three experimental groups stereomicroscopic analysis showed greatest efficacy of group III at coronal, middle and apical sections when their summation was done. Conclusion: R-endo showed superior gutta percha removal efficacy over Protaper Universal and Peezo Reamer.