In-vitro Activity of Sodium-hypochlorite Gel on Bacteria Associated with Periodontitis

Overview

Journal Clin Oral Investig

Specialty Dentistry

Date 2016 Jan 14

PMID 26759339

Citations 30

Authors

Karolina Jurczyk

Sandor Nietzsche

Claudia Ender

Anton Sculean

Sigrun Eick

Affiliations

Soon will be listed here.

Abstract

Objectives: The aim of the present study was to assess the antimicrobial activity of a sodium hypochlorite formulation including its components against bacteria associated with periodontal disease.

Materials And Methods: Sodium hypochlorite formulation (NaOCl gel), its components sodium hypochlorite (NaOCl), and the activating vehicle were compared with 0.1 % chlorhexidine digluconate (CHX) solution. The antimicrobial activity was proven by determination of minimal inhibitory concentrations (MIC), minimal bactericidal concentrations, and killing assays. Furthermore, the influence on formation as well as on a 4-day-old 6-species biofilm was tested.

Results: Except for one strain (Parvimonas micra ATCC 33270 in case of NaOCl gel), the MICs both of the CHX solution and NaOCl gel did not exceed 10 % of the formulations' concentration. In general, MICs of the NaOCl gel were equal as of the CHX solution against Gram-negatives but higher against Gram-positive bacteria. CHX but not NaOCl gel clearly inhibited biofilm formation; however, the activity of NaOCl gel was more remarkable on a 4-day-old biofilm. NaOCl killed bacteria in the biofilm and interfered with the matrix.

Conclusions: The NaOCl gel acts antimicrobial in particular against Gram-negative species associated with periodontitis. Moreover, its component NaOCl hypochlorite is able to alter biofilm matrices.

Clinical Relevance: The NaOCl gel may represent a potential alternative for adjunctive topical antimicrobial treatment in periodontitis.

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