title: In vitro antibacterial efficacy of a new chlorhexidine slow-release device.
abstract: OBJECTIVE
  The aim of this study was to evaluate and compare the antibacterial effect of chlorhexidine and calcium hydroxide slow-release devices on oral bacteria.
  
  
  METHODS
  The agar diffusion test was used to evaluate the antibacterial effect of the slow-release devices Activ Point (chlorhexidine; Roeko) and Calcium Hydroxide Plus Point (Roeko) on 8 anaerobic and 2 facultative oral bacterial strains, as well as 2 bacterial cultures randomly sampled from necrotic root canals and incubated in anaerobic and aerobic broth for 48 hours. The efficiency of the medicaments against the various strains was evaluated using a nonparametric test (Friedman type) and a second nonparametric test (Wilcoxon's signed rank test).
  
  
  RESULTS
  Activ Point produced significantly larger inhibition zones (P < .001) than the calcium hydroxide slow-release device around all tested bacterial strains.
  
  
  CONCLUSIONS
  The chlorhexidine slow-release device (Activ Point) exhibited significant antibacterial activity in the agar diffusion test and merits study as an intracanal medicament.
authors: Department of Endodontology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University Aviv, Israel. linsh@post.tau.ac.il
authors: Shaul
authors: S
authors: Lin
authors: Liran
authors: L
authors: Levin
authors: Ervin I
authors: EI
authors: Weiss
authors: Micha
authors: M
authors: Peled
authors: Zvi
authors: Z
authors: Fuss