In vitro Evaluation of the Efficacy of 2% Carbonic Acid and 2% Acetic Acid on Retrieval of Mineral Trioxide Aggregate and their Effect on Microhardness of Dentin.
BACKGROUND
In this in vitro study, the efficacy of 2% carbonic acid and 2% acetic acid on the surface, microhardness of white mineral trioxide aggregate (MTA) and dentin after 1 day of setting and 21 days of setting of MTA is measured.


METHODS
Tooth molds were made using 60 single-rooted premolars by slicing them to 4 mm in the mid-root region. White MTA (Angelus) was mixed and packed in the molds. Three experimental groups were formed and exposed to 2% carbonic acid, 2% acetic acid, and saline for 10 minutes on 1 and 21 days of setting respectively. Vickers hardness test of white MTA and dentin was done before and after exposure. Data were subjected to analysis of variance (ANOVA) and post hoc tests.


RESULTS
The results show that 2% acetic acid was significantly effective in reducing the microhardness of white MTA compared to 2% carbonic acid and saline on exposure for 10 minutes.


CONCLUSIONS
The results of the present study indicate that 2% acetic acid has maximum efficacy in reducing the surface microhardness of partial and completely set MTA, followed by 2% carbonic acid.


CONCLUSIONS
The following study will help find an adjunct for retrieval of MTA, which was found difficult with the existing methods.
Professor and Head, Department of Conservative Dentistry and Endodontics, SMBT Dental College and Hospital, Sangamner, Maharashtra, India, Phone: +917798686067, e-mail: abrahamsathish@yahoo.in.
Sathish
S
Abraham
Department of Conservative Dentistry and Endodontics, SMBT Dental College and Hospital, Sangamner, Maharashtra, India.
Aradhana B
AB
Kamble
Department of Conservative Dentistry and Endodontics, SMBT Dental College and Hospital, Sangamner, Maharashtra, India.
Pooja
P
Gupta
Department of Conservative Dentistry and Endodontics, SMBT Dental College and Hospital, Sangamner, Maharashtra, India.
Archana
A
Satpute
Department of Conservative Dentistry and Endodontics, SMBT Dental College and Hospital, Sangamner, Maharashtra, India.
Salil
S
Chaudhari
Department of Conservative Dentistry and Endodontics, SMBT Dental College and Hospital, Sangamner, Maharashtra, India.
Pushpak
P
Ladhe
D019342:Acetic Acid / Q000737:chemistry*; D017607:Aluminum Compounds / Q000737:chemistry*; D001641:Bicuspid; D017610:Calcium Compounds / Q000737:chemistry*; D002255:Carbonic Acid / Q000737:chemistry*; D003804:Dentin / Q000187:drug effects*; D004338:Drug Combinations; D006244:Hardness; D066298:In Vitro Techniques; D010087:Oxides / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D013499:Surface Properties
D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate; D002255:Carbonic Acid; D019342:Acetic Acid
Acetic acid; Dentin; Microhardness; Mineral trioxide aggregate.