Removal of White Mineral Trioxide Aggregate Cement: A Promising Approach. (8th September 2013)

• Record Type: Journal Article
• Authors: Saghiri, Mohammad Ali; Garcia-Godoy, Franklin; Gutmann, James L.; Sheibani, Nader; Asatourian, Armen; Lotfi, Mehrdad; Elyasi, Mayam
• Other Names: Abdalla Ali Academic Editor.
• Is Part Of: BioMed research international. Volume 2013(2013)
• Publication Date: 2013-09-08
• Subjects: Medicine -- Periodicals; Biology -- Periodicals; Biotechnology -- Periodicals; Life sciences -- Periodicals; 610.5
• DOI: 10.1155/2013/469164
• Languages: English
• ISSNs: 2314-6133

Abstract

Abstract : Removal of MTA from dentin by applying 37% hydrochloric acid (HCl) to reduce microhardness and push-out bond strength. Forty dentin slices were filled with WMTA and divided into two groups (n = 20 ). Ten slices remained untreated while others were exposed to either HCl or phosphate buffer saline (PBS) and all samples were subjected to pushout test. The mode of bond failures was determined by SEM analysis. Later, twenty glass tubes were filled with WMTA and divided into two groups (n = 10 ). One side of tube was exposed to HCl or PBS while the other side remained untreated and the microhardness was analyzed by testing machine. HCl showed significantly lower pushout strength and microhardness values (P = 0.0001 ), (P = 0.0001 ). HCl treated samples showed mixed bond failures dominantly, while PBS samples mostly showed adhesive failures. The results of this study can suggest the 37% HCl as an effective solution to aid the removal of MTA from the dentin surfaces.