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The influence of filling technique on depth of tubule penetration by root canal sealer: a study using light microscopy and digital image processing



The influence of filling technique on depth of tubule penetration by root canal sealer: a study using light microscopy and digital image processing



Australian Endodontic Journal 30(1): 23-28



The purpose of this study was to compare the depth of sealer penetration into dentinal tubules by three root-filling techniques using light microscopy and digital image processing. Thirty-two maxillary central incisors were prepared. Two teeth were separated for the control group. The rest were divided into three equal groups and obturated as following--G1: lateral condensation; G2: warm vertical compaction of gutta-percha and G3: Thermafil system. Each sample was sectioned longitudinally and prepared for microscopic analysis. A sequence of photomicrographs with magnifications of X50, X200 and X500 were taken. Through digital image analysis and processing, measurements for each field were obtained. A non-parametric ANOVA Kruskal-Wallis analysis was used to determine whether there were significant differences among the groups. Significant differences between G2 and G1 (p = 0.034) and between G3 and G1 (p = 0.021) were identified. There were no significant differences between G2 and G3 (p > 0.05). The results of this research suggest that samples root-filled by thermoplasticised gutta-percha techniques lead to deeper penetration of the root canal sealer into the dentinal tubules.

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Accession: 050656073

Download citation: RISBibTeXText

PMID: 15116906

DOI: 10.1111/j.1747-4477.2004.tb00164.x


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