In Vitro Evaluation of Different Solvents for Retrieval of Mineral Trioxide Aggregate and Calcium-Enriched Mixture Nooshin Sadat Shojaee a, Alireza Adl b*, Fereshte Sobhnamayan a, Azam Khademi c, Mina Hamedi c a Department of Endodontics, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran; b Department of Endodontics, Biomaterials Research Center, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran; c Student, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran
ARTICLE INFO
Article Type: Original Article Received: 05 Feb 2016 Revised: 11 May 2016 Accepted: 31 May 2016 Doi: 10.7508/iej.2016.03.015 *Corresponding author: Alireza Adl, Department of Endodontics, Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran. Tel: +98-713 6263193-4 E-mail: [email protected]
ABSTRACT
Introduction: The purpose of this study was to evaluate the effect of different solvents; carbonic acid (H2CO3), hydrochloric acid (HCl), chlorhexidine (CHX) and sodium hypochlorite (NaOCl) on the surface hardness of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement. Methods and Materials: Plexiglass molds were prepared and filled with Angelus MTA or CEM cement and then exposed to 2% carbonic acid, 37% hydrochloric acid, 2% chlorhexidine, 5.25% sodium hypochlorite and normal saline at intervals of 1 and 21 days, respectively (n=4). Surface microhardness of all specimens was analyzed by a universal testing machine and an electron microscope for some selected samples. Data were analyzed using the three-way ANOVA. Subgroup analysis was performed by Student’s t-test, One-way ANOVA and Tukey’s tests. The level of significance was set at 0.05. Results: On the first day, all solvents and on 21st day HCl, and H2CO3 were more effective in reducing the microhardness of MTA compared to CEM cement (P
ARTICLE INFO
Article Type: Original Article Received: 05 Feb 2016 Revised: 11 May 2016 Accepted: 31 May 2016 Doi: 10.7508/iej.2016.03.015 *Corresponding author: Alireza Adl, Department of Endodontics, Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran. Tel: +98-713 6263193-4 E-mail: [email protected]
ABSTRACT
Introduction: The purpose of this study was to evaluate the effect of different solvents; carbonic acid (H2CO3), hydrochloric acid (HCl), chlorhexidine (CHX) and sodium hypochlorite (NaOCl) on the surface hardness of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement. Methods and Materials: Plexiglass molds were prepared and filled with Angelus MTA or CEM cement and then exposed to 2% carbonic acid, 37% hydrochloric acid, 2% chlorhexidine, 5.25% sodium hypochlorite and normal saline at intervals of 1 and 21 days, respectively (n=4). Surface microhardness of all specimens was analyzed by a universal testing machine and an electron microscope for some selected samples. Data were analyzed using the three-way ANOVA. Subgroup analysis was performed by Student’s t-test, One-way ANOVA and Tukey’s tests. The level of significance was set at 0.05. Results: On the first day, all solvents and on 21st day HCl, and H2CO3 were more effective in reducing the microhardness of MTA compared to CEM cement (P
