Year : 2019

Volume : Volume 10

Issue : Issue 4

Address for correspondence :
Dr. Shailendra S. Sonawane.
sonawaneshailendra@gmail.com

Abstract

Background:  To evaluate and compare the dissolving ability of Carbonic acid (pH=5.4), 10% Citric Acid(10%) and Chlorhexidine Gluconate(2% ) on set White MTA and its effect on the hardness of surrounding sound dentin.  Materials and Method: 40 dentin disc of 2mm height were packed with white MTA mixed with sterile water in a ratio of 3:1. Specimen were kept in 100% humidity for 21 days and later embedded into the polymerising acrylic resin. Surface roughness and microhardness were checked by using computerised surface roughness tester and Vickers microhardness of White MTA and dentin respectively. The specimens were randomly divided into 4 groups and exposed to experimental chemicals Carbonic Acid (CAG), 10% Citric Acid (CA)S, 2% Chlorhexidine Gluconate (CHX) and Normal Saline (Control Group) for time intervals of 3 and 6 minutes. Surface roughness testing of White MTA and Vickers microhardness of dentin was done again at a time interval of 3 and 6 minutes. Data were analysed by ANOVA and Post-hoc test. Result: The results showed that Carbonic acid exposure significantly increases the surface roughness of white MTA after 3 and 6 min as compared with Citric acid, Chlorhexidine and Saline. Conclusions: The result of the present study indicate Carbonic acid was the most effective chemical for MTA dissolution at 21 days of the setting of White MTA. Carbonic acid and 10% citric acid-induced significant reduction in the surface microhardness of dentin except for 2% Chlorhexidine Gluconate

. Keywords: White MTA, Carbonic acid, 10% Citric Acid, Chlorhexidine Gluconate 2%, Dentin, Microhardness, Surface roughness.