Contribution of EDTA and Shaping Technique in the Quality of Teeth Cleaning Infected: In Vitro Study

Ghodbane N,Najah Nawel,Sid R

doi:10.4172/2155-9538.1000210

Abstract

Study objective: The aim of our study was to compare the effectiveness of EDTA cleaning gel to 17% when combined with sodium hypochlorite (NaClO) to 2.5% during canal preparation, with respect to the use of NaClO alone. By using two preparation techniques, the manual technique using manual files steel and continuous rotation with the Hero-shapers system.Materials and methods: The study was conducted in vitro on infected teeth, freshly extracted single rooted. All teeth were carefully cleaned and sectioned at the JCD.On each tooth, a bacteriological sample was taken before and after treatment canal with sterile paper points and analysed according to microbiological standards.The study was conducted on a total of 84 teeth randomly divided into 4 groups of 21 teeth each as follows:The first group was prepared manually with steel instruments and received sodium hypochlorite at 2.5% as irrigating; the 2nd group was manually prepared with the instruments steel and received sodium hypochlorite at 2.5% associated with EDTA gel at 17% as irrigating; the 3rd group was prepared with rotary instruments Hero Shaper and received sodium hypochlorite at 2.5% as irrigating; the 4th group was prepared with rotary instruments Hero Shaper and received sodium hypochlorite at 2.5% associated with EDTA at 17% as irrigating. The results of bacteriological analysis were processed using Epi Info 3.3.2 software, retained significance index p <5%.Results: 23% of germ eradication for the teeth of the first group, 56% for the 2nd group, 47% for the 3rd group and 68% for the 4th group.Conclusion: The use of a chelating agent undeniably improves the quality of cleaning of the root canals, compared with the use of only sodium hypochlorite.

Highlights

The main goal of any endodontic treatment on an infected tooth is the elimination as complete as possible ductal contents, so as to achieve the closest possible level total aseptic [1].This goal can only be achieved by the mechanical action of the instruments that ensure the shaping of the canal, combined with the chemical action of irrigation solutions
The study was conducted on a total of 84 teeth randomly divided into 4 groups of 21 teeth each as follows: The first group was prepared manually with steel instruments and received sodium hypochlorite at 2.5% as irrigating; the 2nd group was manually prepared with the instruments steel and received sodium hypochlorite at 2.5% associated with EDTA gel at 17% as irrigating; the 3rd group was prepared with rotary instruments Hero Shaper and received sodium hypochlorite at 2.5% as irrigating; the 4th group was prepared with rotary instruments Hero Shaper and received sodium hypochlorite at 2.5% associated with EDTA at 17% as irrigating
The use of a chelating agent undeniably improves the quality of cleaning of the root canals, compared with the use of only sodium hypochlorite

Summary

Introduction

The main goal of any endodontic treatment on an infected tooth is the elimination as complete as possible ductal contents (necrotic pulp, necrotic debris, smear layer, microorganisms ...), so as to achieve the closest possible level total aseptic [1]. This goal can only be achieved by the mechanical action of the instruments that ensure the shaping of the canal, combined with the chemical action of irrigation solutions. Endodontic instruments which are used, whether manual or rotating have a purely mechanical role to expand the canal, to optimize the penetration of irrigation solution and allowing it to act in depth and dissolve the existing canal content and the layer of smear layer (SM) is generated by the instrumental action [3]. Its elimination is essential to have a better quality cleaning and prevent secondary bacterial growth that could hinder the prognosis of endodontic treatment [4,5]

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Discussion

Conclusion