The effectiveness of calcium hydroxide pastes: Calen™ and PMCC-Calen™ associated to chemo-mechanical preparation was assessed on Enterococcus faecalis grown within root canals. Seventy incisors were inserted into TSB medium, sterilized and contaminated with E. faecalis. Culture medium was replaced each 24 h and incubated at 37°C for 72 h. After chemo-mechanical preparation, root canals were flled with Calen™ or PMCC-Calen™ (7 or 14 days). Pastes were removed and teeth were inserted into test tubes containing Enterococcosel broth. Calen™ paste (maintained for 7 and 14 days) induced 70% elimination of enterococci and PMCC-Calen™ 100% elimination only after maintenance for 14 days. These medications were signifcantly more effective (p<0.001) than chemo-mechanical protocol alone and PMCC-Calen™ maintained for 7 days, both incapable to eliminate the viability of enterococci. Calcium hydroxide pastes demonstrated important adjuvant effects in the elimination of enterococci during chemo-mechanical preparation of root canal systems. When associated with PMCC, calcium hydroxide pastes should be maintained for at least 14 days.
CITATION STYLE
Lana, P. E. P., Scelza, M. F. Z., Silva, L. E., de Mattos-Guaraldi, A. L., & Hirata Júnior, R. (2009). Antimicrobial activity of calcium hydroxide pastes on Enterococcus faecalis cultivated in root canal systems. Brazilian Dental Journal, 20(1), 32–36. https://doi.org/10.1590/S0103-64402009000100005
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