Abstract
Background—The aim was to determine the influence of sonic activation in the tubular dentine penetration of bioceramic sealers. Methods—Forty mesiobuccal curved root canals of mandibular molars with an apical diameter smaller than #30 were prepared, divided into two groups, and filled with EndoSequence BC sealer, with or without sonic activation during its placement. Roots were sectioned at 3 mm, 6 mm, and 9 mm from the apex, producing a sample size of 120. The samples were evaluated using a confocal laser scanning microscope and comparing these images to the images obtained from an operatory microscope. The percentage of sealer penetration and maximum sealer penetration were evaluated. Statistical analysis was performed using the two-tailed Mann–Whitney U test, where statistical significance was set to p < 0.05. Results—Sonic activation showed higher values for the percentage of sealer penetration when compared at the 9 mm level (p = 0.03). A higher value of maximum sealer penetration was observed at all levels when the sealer was activated. Conclusions—The sonic activation of bioceramic cement resulted in higher sealer penetration into dentinal tubules.
Highlights
Mineral trioxide aggregate (MTA) has been described as a bioactive and versatile material [1,2] and is used for procedures such as root-end fillings, apexification, perforation, vital pulp therapy, and regenerative procedures
The aim of the present study was to determine whether sonic activation increased the dentinal tubule penetration of EndoSequence BC sealer in curved root canals
At the 3 and 6 mm levels, a trend for increased infill was observed for the sonic activation group (BC+); this did not reach a statistically significant difference
Summary
Mineral trioxide aggregate (MTA) has been described as a bioactive and versatile material [1,2] and is used for procedures such as root-end fillings, apexification, perforation, vital pulp therapy, and regenerative procedures. Endosequence® BC sealer (Brasseler USA, Savannah, GA, USA) is a tricalcium-silicatebased root canal sealer; since it is premixed, it requires dentinal moisture to cure and can act as a stand-alone obturation system. This material is hydrophilic, highly radiopaque because it contains zirconium oxide and tantalum oxide, has no shrinkage, and forms hydroxyapatite upon setting [4]. Methods—Forty mesiobuccal curved root canals of mandibular molars with an apical diameter smaller than #30 were prepared, divided into two groups, and filled with EndoSequence BC sealer, with or without sonic activation during its placement.
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