Comparison of Flow and Solubility Properties of Mineral Trioxide Aggregate Cement with Two Additive Plasticizing Agents: An In Vitro Study| Stephy Publishers

 


SOJ Dental and Oral Disorder - (SOJDOD) | Stephy Publishers

Abstract

Proposition: To evaluate the physical properties of flow and solubility of pure and improved mineral trioxide aggregate (MTA) cement with the addition of two plasticizing agents: sodium ether polycarboxylate and sodium naphthalene sulfonate at three different concentrations.

Material and Methods: Flow and solubility tests were carried out using the established methodology recommended by the 57 ANSI/ADA and ISO 6876:2012 standards. Pure MTA was used as control group and was compared to the MTA containing sodium ether polycarboxylate and sodium naphthalene sulfonate at concentrations of 0.5%, 1.0% and 1.5%. Data were analyzed by one-way analysis of variance followed by a post-hoc Tukey test at a 5% significance level.

Results: Sodium ether polycarboxylate increased the MTA flow at the three concentrations. The flow increased with increasing concentration (P<0.05). Sodium sulfonate naphthalene also facilitated flow, though it was inferior to sodium ether polycarboxylate. Sodium naphthalene sulfonate promoted a significant increase in the solubility of MTA (p=0.000).

Conclusions: The additives improved the physical properties of MTA. Sodium ether polycarboxylate was found to be superior to sodium naphthalene sulfonate at all concentrations.

Keywords: Endodontic cement, MTA, Additives, Physical properties

Introduction
Several materials are commercially available for the treatment of endodontic lesions. However, with advancing scientific progress, the need to develop new materials with more accurate responses and concrete results arose. On this concern, Mineral trioxide aggregate (MTA)is a promising material with clinically innovative characteristics. The formulation of MTA is like commercial Portland cement, except for the addition of bismuth oxide, offering radio capacity to the material. MTA exhibits low contraction and long setting time,3 low degree of solubility, biocompatibility, osteo inductive capacity, adequate pH, non resorbable properties, and induces the calcareous carbonation of damaged zones.

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