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|Title:||The effect of sodium hypochlorite on Enterococcus faecalis when grown on dentine as a single- and multi-species biofilm|
|Citation:||Australian Endodontic Journal, 2014; 40(3):101-110|
|Benlee Yap, Peter S. Zilm, Nancy Briggs, Anthony H. Rogers and Peter C. Cathro|
|Abstract:||Enterococcus faecalis is often involved in the aetiology of apical periodontitis after endodontic treatment. This project aimed to establish, on dentine in vitro, a multi-species biofilm containing E. faecalis, and to determine if the organism had an increased resistance to sodium hypochlorite compared with an axenic biofilm. Biofilms were established on dentine discs in flow cells with either E. faecalis alone (axenic) or together with Fusobacterium nucleatum and Streptococcus sanguinis. Following treatment with either 0.9% sodium hypochlorite or saline, the viability of E. faecalis was determined by serial plating and qualitative analysis was performed by scanning electron microscopy and confocal laser scanning microscopy. Viable counts indicated that 0.9% NaOCl is highly effective against E. faecalis grown alone and as part of a multi-species biofilm (P = 0.0005 and P = 0.001, respectively). No significant difference in its survival in the two biofilm types was found (P = 0.8276).|
|Keywords:||endodontics; Enterococcus faecalis; multi-species biofilm; sodium hypochlorite|
|Rights:||© 2014 Australian Society of Endodontology|
|Appears in Collections:||Dentistry publications|
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