Apical microfiltration between two filling cements: bioceramic and resinous in unirradicular premolars prepared with protaper and sealed with lateral condensation

Abstract

Aim: To compare in vitro by the stereomiscroscope the lesser apical microfiltration in uniradicular premolars,
between the cement based on Epoxy Resin and Bioceramic cement. Method: The study was performed on 40
uniradicular dental pieces divided into two groups, the samples were prepared using the protaper system
and the obturation was performed using the lateral condensation technique, the first group was sealed with
Endosequence bioceramic cement and the second group with Cement based on AH-Plus epoxy resin, then sealed
with nail varnish up to 3mm from the apical part, then the samples were placed in the incubator at 37ºC,
waiting for the set time corresponding to each group according to the manufacturer’s instructions . The two
groups of the present study were submitted to 750 cycles of thermocycling, to provide an environment similar tothe oral cavity, then longitudinal cuts were made to the samples. The microfiltration was evaluated using the dye
diffusion method, immersed in 2% methylene blue for 6 days, then the specimens were subjected to a vacuum
pump. The teeth were cut longitudinally to be evaluated by the stereomicroscope. The statistical analysis was
through T-Student and Chi-Square. Results: Group A corresponds to Endosequence obtained a mean of 0,55mm
and Group B corresponds to AH-Plus 1,20mm with an estimated significance of p = 0,013. Conclusion: Both
obturation cements have significant differences, therefore Endosequence has less apical microfiltration than AHPlus.