J Korean Acad Conserv Dent.  2010 Sep;35(5):344-352. 10.5395/JKACD.2010.35.5.344.

Physical and chemical properties of experimental mixture of mineral trioxide aggregate and glass ionomer cement

• Jeong YN
• Yang SY
• Park BJ
• Park YJ
• Hwang YC
• Hwang IN
• Oh WM

• KMID: 2176432
• DOI: http://doi.org/10.5395/JKACD.2010.35.5.344

Abstract

OBJECTIVES
The purpose of this study was to determine the setting time, compressive strength, solubility, and pH of mineral trioxide aggregate (MTA) mixed with glass ionomer cement (GIC) and to compare these properties with those of MTA, GIC, IRM, and SuperEBA.
MATERIALS AND METHODS
Setting time, compressive strength, and solubility were determined according to the ISO 9917 or 6876 method. The pH of the test materials was determined using a pH meter with specified electrode for solid specimen.
RESULTS
The setting time of MTA mixed with GIC was significantly shorter than that of MTA. Compressive strength of MTA mixed with GIC was significantly lower than that of other materials at all time points for 7 days. Solubility of 1 : 1 and 2 : 1 specimen from MTA mixed with GIC was significantly higher than that of other materials. Solubility of 1 : 2 specimen was similar to that of MTA. The pH of MTA mixed with GIC was 2-4 immediately after mixing and increased to 5-7 after 1 day.
CONCLUSIONS
The setting time of MTA mixed with GIC was improved compared with MTA. However, other properties such as compressive strength and pH proved to be inferior to those of MTA. To be clinically feasible, further investigation is necessary to find the proper mixing ratio in order to improve the drawbacks of MTA without impairing the pre-existing advantages and to assess the biocompatibility.

Keyword

Compressive strength; Glass-ionomer cement; Mineral trioxide aggregate; pH; Setting time; Solubility

MeSH Terms

Acrylic Resins
Aluminum Compounds
Calcium Compounds
Compressive Strength
Drug Combinations
Electrodes
Glass
Glass Ionomer Cements
Glutamates
Guanine
Hydrogen-Ion Concentration
Oxides
Silicates
Silicon Dioxide
Solubility
Pemetrexed
Acrylic Resins
Aluminum Compounds
Calcium Compounds
Drug Combinations
Glass Ionomer Cements
Glutamates
Guanine
Oxides
Silicates
Silicon Dioxide

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