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- W1570504169 abstract "De-Deus G, Brandão MC, Leal F, Reis C, Souza EM, Luna AS, Paciornik S, Fidel S. Lack of correlation between sealer penetration into dentinal tubules and sealability in nonbonded root fillings. International Endodontic Journal, 45, 642–651, 2012. Aim To determine the correlation between leakage and sealer penetration into dentinal tubule. Methodology The root canal of 60 mandibular central incisor teeth were prepared and filled under standardized conditions. Teeth were placed into a device to assess glucose penetration using 15 psi pressure application. After 1 h, glucose concentrations in the lower chamber were measured using an enzymatic reaction. Each specimen was then sectioned horizontally at 3, 6 and 8 mm from the apex, and a standard metallographic preparation was performed. The coronally facing surface of each slice was examined in a high-resolution stereomicroscope and under Confocal Laser Scanning Microscope. For each slice, the external outline of the root canal, the internal circumference of the root canal walls and the areas along the canal walls where the sealer had penetrated into the dentinal tubules (sealer tags) were outlined and measured. Afterwards, the percentage of the sealer penetration in each section was calculated. The Spearman correlation test was used to verify the correlation between the variables studied (glucose leakage and sealer penetration into dentinal tubules). Results The means and standard deviations of glucose leakage were 0.744 g L−1 (±0.5), and the percentage of the dentinal tubule sealer penetration varied between teeth from 5.6% to 42.21%, with an average of 13.7 ± 17.2%. The Spearman correlation test revealed no significant correlation between the two factors analysed (P = 0.082). The r2 value was equal to 0.12. Conclusions There was no significant correlation between sealability sealer penetration into dentinal tubles. The lack of correlation reported is of relevance as sealer penetration into dentinal tubules has been used as an advantageous property during the launch of new root filling materials and techniques." @default.
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- W1570504169 date "2012-03-14" @default.
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- W1570504169 title "Lack of correlation between sealer penetration into dentinal tubules and sealability in nonbonded root fillings" @default.
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- W1570504169 doi "https://doi.org/10.1111/j.1365-2591.2012.02023.x" @default.
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