Antimicrobial activity of different concentrations of NaOCl and chlorhexidine using a contact test

Brazilian Dental Journal

Luciana Moura Sassone²  Rivail Antonio Sergio Fidel¹  Sandra Rivera Fidel¹  Marina Dias¹  Raphael Hirata Junior¹ 

[1] ,State University of Rio de Janeiro Faculty of Dentistry Rio de Janeiro RJ ,Brazil

关键词: antimicrobial activity;    sodium hypochlorite;    chlorhexidine;    endodontics;   

DOI  :  10.1590/S0103-64402003000200005

来源: SciELO

【 摘 要 】

The purpose of this study was to analyze the in vitro antimicrobial activity of sodium hypochlorite (1% and 5%) and chlorhexidine (0.12%, 0.5% and 1%). Bacterial samples (ATCC) of Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Porphyromonas gingivalis and Fusobacterium nucleatum were submitted to a contact test. Solutions were evaluated at different time intervals: immediately, 5 min, 15 min, and 30 min after contact and repeated 10 times. The results of the contact test showed that 0.12% chlorhexidine did not eliminate E. faecalis at any time interval, while 0.5% and 1% chlorhexidine and 1% and 5% sodium hypochlorite did. These results permit us to conclude that to obtain better antimicrobial activity, chlorhexidine in a concentration greater than 0.12% should be used.

【 授权许可】

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