Leakage of five root canal sealers.
ABSTRACT The aim of this study was to examine the apical sealing ability of five root canal sealers using a fluid transport model.
A comparison of root canal scalers AH26, AH Plus, Diaket, Apexit, and Ketac-Endo were tested on 60 single-rooted teeth. The coronal part of each tooth was removed at the amelo-cemento junction, and also 3 mm of the root tip. Root canals were instrumented using the 'step-back' technique with Gates Glidden drills and irrigated with 2.5% NaOCl. The specimens were divided into five groups of 10 samples each and filled with test materials and gutta-percha points by the cold lateral condensation technique. Ten teeth were used as a control group, out of which five served as negative and five as positive controls. The leakage was measured by the movement of an air bubble in a capillary glass tube connected to the experimental root section.
The differences in leakage amongst Ketac-Endo (0.318 microL: SD 0.084), AH26 (0.319 microL; SD 0.075), AH Plus (0.330L; SD 0.085) Apexit (0.360 microL; SD 0.127) and Diaket (0.387 microL; SD 0.140) were not statistically significant (P > 0.05).
Under the conditions of this study, all five sealers produced a satisfactory seal.
Article: In vitro study of microbial leakage in roots filled with EndoREZ sealer/EndoREZ Points and AH Plus sealer/conventional gutta-percha points.[show abstract] [hide abstract]
ABSTRACT: The aim of this study was to determine and compare the microbial leakage of roots filled with EndoREZ sealer/EndoREZ Points and AH Plus sealer/ conventional gutta-percha points. 60 single-rooted teeth were prepared using step-back technique. The smear layer was removed with 18% EDTA. Teeth were divided into two experimental groups (n=25 each group) and two controls (n=5 each group). In AH Plus group root canals were obturated with AH Plus sealer/gutta-percha and in EndoREZ group with EndoREZ sealer/EndoREZ Points. Five teeth were served as negative controls and five as positive controls. All teeth were inserted into Eppendorf plastic tubes and suspended in glass bottles containing sterile Schaedler broth. The coronal chambers were filled with the mix of human saliva and broth (ratio 3:1). The medium was changed every 7 days. Microbial growth in the broth was evaluated every day up to the end of experiment. Leakage in the root canals of the teeth from experimental groups occurred between 4 and 75 days. The mean leakage in AH Plus group was 18.86 days, while in EndoREZ group it was 28.28. No statistically significant difference in microbial leakage between two tested filling materials was found. Both types of root fillings - EndoREZ sealer/EndoREZ Points and AH Plus sealer/gutta-percha points - showed microbial leakage.Stomatologija / issued by public institution "Odontologijos studija" ... [et al.] 02/2009; 11(1):21-5.
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ABSTRACT: The goal of this study was to check whether leakage results of the same specimens measured by 2 different leakage models are similar. Canine root canals were prepared and filled with cold gutta-percha cones and 1 of 4 sealers (20 canals for each sealer). The 80 specimens were first connected to a fluid transport model where air-bubble movement was measured. The same specimens were later connected to a glucose penetration model where the concentration of glucose was measured. In both models, a headspace pressure of 30 kPa was used to accelerate leakage. In both models, 4 sealers ranked the same regarding the leakage they allowed, and a significant correlation between the results of the 2 models was confined (Spearman test coefficient = 0.65; P = .000001). Under the conditions of this study, leakage results of 80 specimens recorded in the fluid transport model and glucose penetration model were similar.Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics 07/2008; 106(2):309-13. · 1.50 Impact Factor
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ABSTRACT: Original paper SUMMARY Using dye penetration method we investigated apical leakage of root canals, obturated with different gutta-percha techniques. Forty single root extracted human teeth were selected and randomly divided into four groups a) lateral condensation of gutta-percha, b) vertical condensation of gutta-percha withToucn Heat, c) Thermafil and d) Obtura II. Sealers AH26 was used for all groups. The apical leakage was measured using the dye penetration method. Scaling of dye penetration was in value of mil-limeter. Results were further analyzed by Games-Howell test, Dunett-t test and Kruskal-Wallis test. A significant difference in apical leakage was shown in group filled withToucn Heat (P<0.05). Significant difference in apical leakage between groups lateral condensation, Thermafil and Obtura II was not found (P>0.05) Under the conditions of this study the results suggested that lateral condensation Thermafil and Obtura II may produce acceptable obturation of root canals.MATERIA SOCIO MEDICA. 01/2009; 21(1):27-30.