Physical and Biological Properties of a High-Plasticity Tricalcium Silicate Cement.

Arthur Dias Galarça,Evandro Piva,Giana da Silveira Lima,Alvaro Henrique Borges,Adriana Fernandes da Silva,Orlando Aguirre Guedes,Thiago Machado Pereira,Wellington Luiz de Oliveira Da Rosa,Neftalí Lenin Villarreal Carreño,Tiago Machado Da Silva

doi:10.1155/2018/8063262

Abstract

Introduction Mineral Trioxide Aggregate (MTA) is a tricalcium-based silicate, dicalcium silicate matrix. Despite its good biologic properties, some clinicians still claim to have difficulties in handling MTA after its preparation due to its sandy consistency. The aim of the present study was to evaluate the physicochemical properties and cytotoxicity of MTA Repair HP (Angelus, Londrina, PR, Brazil) compared with MTA Angelus (Angelus, Londrina, PR, Brazil). Materials and Method The properties assessed were particle size, setting time, flow, film thickness, radiopacity, water solubility, compressive strength, and cytotoxicity. Statistical analysis was performed considering p < 0.05 as statistically significant. Results For radiopacity, water absorption and solubility MTA Repair HP were statistically similar to MTA Angelus. The MTA Angelus had statistically different film thickness values, higher than MTA Repair HP (p < 0.05). Besides, MTA Angelus showed a lower and statistically different compressive strength after 28 days than MTA Repair HP (p<0.05). Additionally, MTA Repair HP set more slowly (p < 0.05). Relative to cell viability, MTA Repair HP was statistically similar to MTA Angelus after 24 and 48 h in cell viability. Conclusions The MTA Repair HP presented similar cell viability, lower film thickness, higher flow, setting time, and compressive strength values after 28 days than MTA Angelus. In general, the MTA Repair HP presented physicochemical and biological properties similar to the MTA Angelus.

Highlights

Mineral Trioxide Aggregate (MTA) is a tricalcium-based silicate, dicalcium silicate matrix
MTA Repair HP (Angelus, Londrina, PR, Brazil) has been introduced [12] and, according to the manufacturer, this material is easy to manipulate compared to earlier tricalcium-silicate based cements
The setting time, flow, and film thickness were determined in accordance with methods recommended by the International Organization for Standardization (ISO) specification number 6876:2012 [13]

Summary

Introduction

Mineral Trioxide Aggregate (MTA) is a tricalcium-based silicate, dicalcium silicate matrix. Despite its good biologic properties, some clinicians still claim to have difficulties in handling MTA after its preparation due to its sandy consistency. The MTA Repair HP presented similar cell viability, lower film thickness, higher flow, setting time, and compressive strength values after 28 days than MTA Angelus. Original products contained tricalcium aluminate, tetracalcium aluminoferrite, gypsum, and bismuth oxide [3] Knowledge about this hydraulic cement increased, and its physical and biological properties expanded [4]. Despite its good biologic properties, some clinicians still claim to have difficulties in handling this material after its preparation due to its sandy consistency [9, 10]. MTA Repair HP (Angelus, Londrina, PR, Brazil) has been introduced [12] and, according to the manufacturer, this material is easy to manipulate compared to earlier tricalcium-silicate based cements

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Methods

Results

Conclusion