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Stomatologia 1997, 54(1):33-37
Research study
EVALUATION OF THE CORONAL MICROLEAKAGE IN THREE ROOT CANAL FILLING TECHNIQUES
P. BELTES, O. PANTELÉDOU, A. PLASTIRAS
SUMMARY The purpose of this study was to evaluate the effect of three root canal filling techniques on the coronal microleakage: the lateral condensation of gutta-percha cones, the vertical condensation of warmed gutta-percha and the injection of the thermoplasticized gutta-percha with Ultrafil system. Fifty-one anterior, single-rooted, freshly extracted, permanent teeth were used in this study. The teeth were prepared using a step-back technique and divided into three groups (A, B and C) of 15 teeth each. Additionally, six teeth served as positive and negative controls. Group A teeth were obturated with laterally condensed gutta-percha, group B with vertically condensed warmed gutta-percha and group C with thermoplasticized gutta-percha. All teeth were stored in artificial saliva for 28 days and afterwards immersed in india ink for 48 hours, decalcified, cleared and examined under a stereoscopic microscope at x16 magnification to measure the coronal linear dye penetration. The mean value of coronal microleakage for group A was 2.79mm, for group B 2.68mm and for group C 2.36mm. No statistically significant differences were observed between the three groups (p>0.05).
KEY WORDS: Root canal obturation, Coronal microleakage.
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