Issue V10N01 | Year 2020 | Editorial Original Article | Pages 38 to 42
Objective: The objective of this study was to analyze, in micro-CT, the capacity of different methods for insertion of calcium hydroxide paste in the filling of lateral canals simulated in blocks of acrylic. Methods: A total of 72 acrylic blocks with lateral canals simulated in the coronal, middle and apical portions, were used and filled with calcium hydroxide paste, according to the following methods (n = 12): Group 1 – #30 K-file; Group 2 – Lentulo spiral; Group 3 – Ultrasonic agitation; Group 4 – Sonic agitation with EndoActivator; Group 5 – Syringe + Capillary Tips; Group 6 – Agitation with Easy Clean at low speed. For the groups that received agitation, the blocks were filled with the aid of a syringe and Capillary Tips. Each sample was scanned with SkyScan 1174, before and after the filling procedures, and the volume of calcium hydroxide was measured using CTAN software. The percentage of penetration of intracanal medication inside the simulated canals was calculated. Data were statistically compared (p < 0.05). Results: The agitation with EndoActivator and ultrasonic insert promoted a greater penetration of paste with significant statistical differences in relation to the #30 K-file group in the 3 levels analyzed (p < 0.05). Other statistical differences occurred in the comparison between the Easy Clean group and #30 K-file group in the coronal and middle thirds and in the comparison between Lentulo spiral group and #30 K-file group in the apical (p < 0.05). Conclusion: Methods which use agitation devices , such as ultrasonic insert, promoted higher filling of calcium hydroxide in simulated lateral canals. Pulpitis. Calcium Hydroxide. Ultrasonics.
Duque JA, Medeiros MAFW, Borges MMB, Vivan RR, Bramante CM, Duarte MAH. Comparison of different methods for insertion of calcium hydroxide paste in the filling of simulated lateral canals: in vitro evaluation. Dental Press Endod. 2020 Jan-Apr;10(1):38-42.