Comparative evaluation of the sealing ability of filling materials on root end cavities treated with smear layer removing agents: A confocal laser scanning microscopic study.
Shah DK, Sanap-Tandale A, Aggarwal S, Sengar E, Borkar A, Shetty S. Comparative evaluation of the sealing ability of filling materials on root end cavities treated with smear layer removing agents: A confocal laser scanning microscopic study. J Conserv Dent 2019;22:495-9
Materials and Methods:
Sixty extracted single rooted teeth were instrumented and obturated
with gutta-percha. The apical 3 mm of each tooth was resected and 3 mm
root-end preparation was made using ultrasonic tip. 17% EDTA (n = 20), 0.2% Chitosan (n = 20) and 1% Phytic acid (n
= 20) was used as a smear layer removing agent and each above group was
further subdivided and restored with a root end filling material,
Biodentine (n = 10) and MTA Plus (n = 10). The samples
were coated with varnish except at the root end and after drying, they
were immersed in Rhodamine B dye for 24 h. The teeth were then rinsed,
sectioned longitudinally, and observed under CLSM.
Results: In
the present study, MTA Plus® treated with 1% Phytic acid showed the
least microleakage followed by Biodentine™ treated with 1% Phytic acid
which was statistically not significant. MTA Plus® treated
with 17% EDTA showed the highest microleakage when compared to other
tested groups. There was a significant difference in microleakage
between MTA Plus® and Biodentine™ when treated with 17% EDTA and 0.2%
Chitosan. However, more microleakage was seen with Biodentine™ group
than MTA plus® group.
Conclusion: Root end cavities restored
with MTA plus and treated with Phyitc acid showed superior sealing
ability. Furthermore, smear layer removing agents will aid in better
adaptability of root end filling material.
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