A COMPARATIVE ANALYSIS ON ADHESION OF AH PLUS SEALER TO HUMAN ROOT DENTIN, TREATED WITH RC-HELP, 10% CITRIC ACID & 17% EDTA USING ULTRASONIC IRRIGATION

Ashwini Marukar; Dr K.S.Satishkumar; Dr. Ratnakar P

Volume : VI, Issue : III, March - 2017

A COMPARATIVE ANALYSIS ON ADHESION OF AH PLUS SEALER TO HUMAN ROOT DENTIN, TREATED WITH RC-HELP, 10% CITRIC ACID & 17% EDTA USING ULTRASONIC IRRIGATION

Ashwini Marukar, Dr K. S. Satishkumar, Dr. Ratnakar P

Abstract :

Aim - The aim of this study is to evaluate the adhesion of AH PLUS sealer to human root dentin treated with 17% EDTA,10% citric acid and RC-HELP, using the push-out test.

Materials and Methods - 40 extracted mandibular first premolar teeth were included in the study. The teeth were decoronated using a diamond disc and water spray to obtain standardized 14mm long root segment. Working length was established by inserting K file #15 (Mani) 1 mm short of the apex. The root canals were enlarged using Protaper Ni-Ti instruments (Dentsply, Germany) to size #F2, at the working length. The teeth were divided into four groups according to the final irrigation regimen- Group I : Saline & 3% NaOCl, Group II : Freshly prepared 17% EDTA, Group III : RC-HELP , Group IV: Freshly prepared 10 % citric acid. The canals were dried using corresponding protaper paper points (Dentsply, Malleifer). After mixing the AH plus sealer (Dentsply, Germany), it was applied along the walls of the canals. Gutta-percha protaper master cone # F2 (Dentsply Maillefer) was lightly coated with sealer and inserted to the working length. After setting of the sealer, horizontal sections of 3-mm thickness were cut from 5 mm from the apex of each root. Each root section was then subjected to a compressive load via a universal testing machine and the values were recorded.

Results : Results showed that the control (Group1) presented a lower push−out bond strength value than the experimental groups (P < 0.05). 17% EDTA (Group II ) as the final irrigant provided the highest mean bond strength followed by RC-HELP (Group III) with and 10%CITRIC ACID(Group IV)