Objective: The aim of the present study was to evaluate the reduction in bacterial loading uing MTAD as an irrigating solution in pulpectomized primary teeth.
Study Design: A randomized, controlled clinical trial was performed that included primary teeth with pulp necrosis. Sixty necrotic canals were included, 30 irrigated with MTAD (experimental group) and 30 with 1% Na0Cl solution (control group); in all cases, 2 microbiological samples from within the canals were taken with sterile paper points, the first after the canal opening and before the first irrigation, and the second after instrumentation and final irrigation, before obturation. All samples were evaluated by Agar plate method.
Results: The results were statistically analyzed by student 't' test. After analyzing samples before and after irrigation in the control group (NaOCl), we found a significant decrease of bacterial load ( p = < 0.001). The same occurred in the MTAD group samples ( p = < 0.001). When both groups were compared post irrigation, a statistically significant difference was observed in favor of MTAD.
Conclusion: MTAD can be suggested as an alternative irrigant for pulpectomy of necrotic teeth.
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