Influence of Metallurgy and File Design in Micro Crack Formation in Root Canals - An in Vitro Study

Dr Jyothilekshmi B,Dr Afzal Abdul Salim,Dr Praveena S V,Dr Rajesh Pillai,Dr N O Varghese,Dr Sheila George,Dr Geetha Ramachandran,Dr Nikhil Murali

doi:10.34257/gjmrjvol20is2pg1

Abstract

Aim and Objectives: This study aims to compare the incidence of dentinal microcracks produced by Max Wire Technology (XP Endo Shaper-single files), Adaptive Pitch (Hero shaper – multiple files) and Controlled Memory (Hyflex – multiple files) files during root canal procedures in single- rooted teeth using a stereomicroscope. Materials and Methods: Sixty four single-rooted mandibular premolars with similar sizes and completed apices were selected. All specimens were decoronated using a diamond- coated bur with water cooling, leaving roots approximately 15 millimeter in length.Silicone impression material was used for covering the external surface of roots to simulate periodontal ligament space, and specimens were then embedded in the alginate impression material.

Highlights

A recently introduced single file system known as the XP-endo Shaper[10] (XP) (FKG Dentaire, LaThe irrevocable aim of endodontics is to create a three-dimensional flawless seal of the root canal system. (1) During endodontic treatmentChaux-de-Fonds, Switzerland) uses a rotary Ni-Ti snakeshaped instrument
Hero Shaper [8] (HS; Micro-Mega, Besancon, France) is a multiple file system with a triple helix cutting presented with minimal dentinal microcracks but no significant edge and a safe ended tip with variation in the helical difference was noticed
Group II: Teeth prepared with a single file system (XP ENDO SHAPER)((FKG Dentaire SA Switzerland) In XP groups, root canals were enlarged with a

Summary

Introduction

A recently introduced single file system known as the XP-endo Shaper[10] (XP) (FKG Dentaire, LaThe irrevocable aim of endodontics is to create a three-dimensional flawless seal of the root canal system. (1) During endodontic treatmentChaux-de-Fonds, Switzerland) uses a rotary Ni-Ti snakeshaped instrument. A recently introduced single file system known as the XP-endo Shaper[10] (XP) The Max Wire® and Booster Tip technologies combine to make the XP-endo Shaper a procedures, roots are susceptible to develop dentinal “One File Shaper.”. It has an initial taper of .01 in its M damage, quantity of which are influenced by numerous phase when it is cooled. Upon exposure to body factors like physical properties of teeth, [2] preparation temperature (350C), the taper changes to .04 according technique or various endodontic instruments that used, to the molecular memory of the A phase. XP can adapt to canal irregularities and The XP file was first placed in 350C water and has excellent resistance to cyclic fatigue placed in the root canal in order to enable phase

Objectives

Methods

Results

Discussion

Conclusion