Improvement of the properties of mineral trioxide aggregate by mixing with hydration accelerators.
J Endod
; 37(10): 1433-6, 2011 Oct.
Article
en En
| MEDLINE
| ID: mdl-21924197
ABSTRACT
INTRODUCTION:
Mineral trioxide aggregate (MTA) is used widely in endodontic therapy. This study examined the setting time, compressive strength, and pH of MTA mixed with several hydration accelerators (calcium chloride, low-dose citric acid, calcium lactate gluconate solution).METHODS:
Group 1 (control) was obtained by mixing MTA with distilled water. In group 2, MTA containing 10% calcium chloride was mixed with distilled water. In group 3, MTA was mixed with 0.1% citric acid. In group 4, MTA was mixed with a calcium lactate gluconate solution. The setting time, compressive strength, and pH were examined.RESULTS:
The setting time of MTA mixed with hydration accelerators was significantly shorter than that of MTA mixed with water (P < .01). In particular, replacing distilled water with a calcium lactate gluconate solution provided a significant decrease in setting time. The compressive strengths of MTA mixed with hydration accelerators were significantly lower than that of MTA mixed with water (P < .01), but those values increased with time. The pH of MTA mixed with hydration accelerators was significantly lower than that of MTA mixed with water (P < .01) but stable at a high level (pH 11-12).CONCLUSIONS:
Hydration accelerators improved the setting time of MTA. Nevertheless, more study will be needed to improve MTA without impairing its preexisting advantages.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Óxidos
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Materiales de Obturación del Conducto Radicular
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Silicatos
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Compuestos de Calcio
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Compuestos de Aluminio
Idioma:
En
Revista:
J Endod
Año:
2011
Tipo del documento:
Article