Effect of soft chelating irrigation on the sealing ability of GP/AH Plus root fillings.
10.5395/JKACD.2009.34.6.484
- Author:
Yi Suk YU
1
;
Tae Gun KIM
;
Kwang Won LEE
;
Mi Kyung YU
Author Information
1. Department of Conservative Dentistry, School of Dentistry, Chonbuk National University, Korea. mkyou102@hanmail.net
- Publication Type:Original Article
- Keywords:
Sealing ability;
Chelating solution;
EDTA;
HEBP;
Leakage;
Smear layer
- MeSH:
Dental Pulp Cavity;
Dentin;
Edetic Acid;
Epoxy Resins;
Glucose;
Gutta-Percha;
Humidity;
Root Canal Filling Materials;
Smear Layer;
Spectrophotometry;
Tooth
- From:Journal of Korean Academy of Conservative Dentistry
2009;34(6):484-490
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to evaluate the effect of soft chelating irrigant on the sealing ability of root fillings by using a glucose leakage test. A total of 45 single-rooted teeth were selected for the study. The teeth were decoronated leaving a total length of 13mm. The root canals prepared using K3 NiTi rotary instruments to an apical dimension of size 45(0.06 taper). The specimens were then randomly divided into 3 experimental groups of 13 roots each and 2 control groups of 3 roots each. Specimen in each group were prepared with different irrigation protocols : group 1, 2.5% NaOCl; group 2, 2.5% NaOCl and 17% EDTA; group 3, 2.5% NaOCl and 15% HEBP. The root canals were filled with gutta-percha and AH Plus sealer using lateral condensation. After 7 days in 37degrees C, 100% humidity, the coronal-to-apical microleakage was evaluated quantitatively using a glucose leakage model. The leaked glucose concentration was measured with spectrophotometry at 1, 4, 7, 14, 21 and 28 days. There was a tendency of increase in leakage in all experimental groups during experimental period. HEBP-treated dentin showed no significant difference with EDTA-treated dentin during experimental period. From the 21th day onward, HEBP-treated dentin showed significantly lower leakage than smear-covered dentin. HEBP-treated dentin displayed a similar sealing pattern to EDTA-treated dentin and a better sealing ability than smear-covered dentin. Consequently, a soft chelator(HEBP) could be considered as the possible alternative to EDTA.
