Setting time and thermal expansion of two endodontic cements
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/09/2008
|
Resumo |
The purpose of this study was to evaluate the setting time and the thermal expansion coefficient of 2 endodontic cements, MTA-Angelus and a novel cement called CER. The setting time was determined in accordance to ANSI/ADA specifications no. 57. Three samples of 10 mm diameter and 2 mm thickness were prepared for each cement. The thermal expansion measurements were performed by strain gauge technique. Four samples of each cement were prepared using silicone rings of 5 mm diameter and 2 mm thickness. The data were analyzed statistically using the Student t test. The setting time obtained for the MTA-Angelus and CER cements was 15 (SD 1) min and 7 (SD 1) min, respectively. The linear coefficient of thermal expansion was 8.86 (SD 0.28) mu strain/degrees C for MTA-Angelus and 11.76 (SD 1.20) mu strain/degrees C for CER. The statistical analysis showed significant difference (P < .05) in the setting time and linear coefficient of thermal expansion between the 2 cements. The CER cement has a coefficient of expansion similar to dentin, which could contribute to a decrease of microleakage degree. |
Formato |
E77-E79 |
Identificador |
http://dx.doi.org/10.1016/j.tripleo.2008.04.021 Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology. New York: Mosby-elsevier, v. 106, n. 3, p. E77-E79, 2008. 1079-2104 http://hdl.handle.net/11449/10056 10.1016/j.tripleo.2008.04.021 WOS:000258449300038 |
Idioma(s) |
eng |
Publicador |
Mosby-elsevier |
Relação |
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |