The effect of MTAD as a final root canal irrigants on the coronal bacterial leakage of obturated root canals.
10.5395/JKACD.2008.33.4.397
- Author:
Tae Woo KIM
1
;
Seok Woo CHANG
;
Dong Sung PARK
Author Information
1. Department of Conservative Dentistry, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea. dspark@skku.edu
- Publication Type:Original Article
- Keywords:
MTAD;
Irrigation;
Bacterial leakage;
Enterococcus faecalis
- MeSH:
Bismuth;
Brain;
Culture Media;
Dental Pulp Cavity;
Edetic Acid;
Enterococcus faecalis;
Epoxy Resins;
Gutta-Percha;
Heart;
Humans;
Meristem;
Molar;
Root Canal Filling Materials;
Root Canal Irrigants;
Silver;
Sodium;
Sodium Hypochlorite;
Titanium;
Tooth
- From:Journal of Korean Academy of Conservative Dentistry
2008;33(4):397-404
- CountryRepublic of Korea
- Language:English
-
Abstract:
The purpose of this study was to evaluate the effects of MTAD, EDTA and sodium hypochlorite(NaOCl) as final irrigants on coronal leakage resistance to Enterococcus faecalis. Forty extracted human maxillary molars were used in this experiment. The teeth were randomly divided into positive control group (Group 1; n = 5), negative control group (Group 2; n = 5) and three experimental groups (n = 30). In Group 3 (n = 10), the root canals were irrigated with sodium hypochlorite. In Group 4 (n = 10) and 5 (n = 10), the root canals were irrigated with sodium hypochlorite and rinsed with EDTA and MTAD, respectively. The teeth in each group were cleaned and shaped to #40 profile with .04 taper, and obturated with gutta-percha and AH-26 root canal sealer. The coronal portion of each tooth was placed in contact with inoculum of Enterococcus faecalis in Brain Heart Infusion (BHI) culture media. Each root tip was placed in a vial containing sterile culture media. The vials were placed in anaerobic chamber and observed everyday for turbidity for 180 days. Statistical analysis was performed using Fisher's Exact Test. After 180 days, Group 3, 4, and 5 showed 7, 4 and 5 leaking samples respectively. The differences in leakage resistance were not statistically significant among Group 3, 4 and 5.
