Evaluation of Apical Microleakage of Endodontically Treated Teeth Sealed With Three Different Root Canal Sealers

Abstract

Different materials are used during endodontically treating of teeth as root canal sealers. Thus, this study was done to evaluate the sealing ability of three different types of root canal sealers on the apical part of the tooth. Materials and Methods: 50 sound human teeth were instrumented by using a rotary ProTaper nickel-titanium files under crown down technique. The samples were divided randomly into 3 groups (n=10), additionally two groups were used as +ve controls, first group usedEndofill sealer (PD product dentairesSA,Switzerland), and group two used Tagadseal sealer (technical general United kingdom),and the third group used AH plus sealer (Dentsply, Switzerland). All teeth were obturated using the single cone technique with the sealers, then the whole root surface was coated with two layers of aspecial type of nail varnish, except the apical 1 mm, then all teeth were placed into 2 % methylene blue dye liquid for one week at 37o C. After that they were removed from the dye , the nail varnish was removed. The positive controls (n=10) were left unfilled and coated as described earlier. Then the tooth was splited longitudinally and each half examined under a stereomicroscope with magnification: 10 X. A computer software was ued taken by a digital camera. Analyzing of data was done by One-Way Anova and Duncan,s Test analysis among the means of microleakage of the three types of sealers. All tests were computed at 5% significance level.Results: showed statistically significant difference among groups. Group 3 (AH plus) showed abtter seal among ( Tg and Endofill) groups while Tg and Endofill showed no significant difference between both. Conclusions: Under the conditions of this study, the AH plus sealer provided a better sealing ability than Endofill and Tagadseal sealers, but long term in vivo study is important to prove it