EVALUATION OF SURFACE TOPOGRAPHIC CHANGES OF THREE DIFFERENT NITI ROTARY FILE SYSTEMS: A SEM STUDY.

Dr. Pragnya U; Dr. Vamsee Krishna N; Dr. Datta Prasad S; Dr. Sunil Kumar C; Dr. Sunil Kumar S; Dr. Chandra Babu K.S

Volume : IX, Issue : IV, April - 2020

EVALUATION OF SURFACE TOPOGRAPHIC CHANGES OF THREE DIFFERENT NITI ROTARY FILE SYSTEMS: A SEM STUDY.

Dr. Pragnya U, Dr. Vamsee Krishna N, Dr. Datta Prasad S, Dr. Sunil Kumar C, Dr. Sunil Kumar S, Dr. Chandra Babu K. S

Abstract :

Objective: This invitro study aimed to evaluate the surface topographic changes of ProTaper Universal, NeoEndo Flex and ProTaper Gold nickel titanium endodontic rotary instruments after root canal preparation. Materials and Methods: Forty–eight freshly extracted single rooted human teeth were selected and were randomly divided into three groups of sixteen teeth each and were instrumented with three different NiTi rotary file systems (Group I: ProTaper Universal, Group II: NeoEndo Flex, Group III: ProTaper Gold) according to manufacturers� instructions. All the instruments were evaluated for defects before use and after first, fifth and tenth use under scanning electron microscope (SEM). Scoring was given by a blind study. Results and Conclusion: The unused instruments did not show any significant surface defect. No significant difference was seen between the groups but the experimental results showed that NeoEndo Flex files had the least defects followed by ProTaper gold and ProTaper Universal instruments.