Document Detail


The effectiveness of passive ultrasonic irrigation on intraradicular Enterococcus faecalis biofilms in extracted single-rooted human teeth.
MedLine Citation:
PMID:  20158536     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIM: To compare the efficacy of passive ultrasonic irrigation with 1% sodium hypochlorite, with that of conventional syringe irrigation with 1% sodium hypochlorite, on intraradicular Enterococcus faecalis biofilms in extracted single-rooted human teeth. METHODOLOGY: Biofilms of E. faecalis (strain OMGS 3202) were grown on the prepared root canal walls of 48 standardized root halves which had been longitudinally sectioned. Following reapproximation, the roots were divided into four groups of twelve. The two experimental groups were treated with conventional syringe irrigation with 1% sodium hypochlorite solution (experimental group A) and passive ultrasonic irrigation with 1% sodium hypochlorite solution (experimental group B). Of the two control groups, the first was treated with conventional syringe irrigation with sterile saline solution (control group C), whilst the second control group (D) received no irrigation. The root halves were processed for scanning electron microscopy. Three images (x 700), coronal, middle and apical, were taken of the twelve root halves in each of the four groups, using a standardized protocol. The images were randomized and biofilm coverage assessed independently by three calibrated examiners, using a four-point scoring system. RESULTS: There were no significant differences in the scores for remaining biofilm coverage between group A (conventional syringe irrigation with 1% sodium hypochlorite) and group B (passive ultrasonic irrigation with 1% sodium hypochlorite) at the three observed levels. There was a significant difference between both experimental groups (groups A and B) and group C (conventional syringe irrigation with sterile saline solution) (P < 0.001) at all three observed levels. CONCLUSIONS: Both conventional syringe irrigation and passive ultrasonic irrigation with 1% sodium hypochlorite were effective at completely removing intraradicular E. faecalis biofilms. Conventional syringe irrigation with sterile saline solution was only partially effective at removing the biofilms.
Authors:
B Bhuva; S Patel; R Wilson; S Niazi; D Beighton; F Mannocci
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International endodontic journal     Volume:  43     ISSN:  1365-2591     ISO Abbreviation:  Int Endod J     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-02-17     Completed Date:  2010-05-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8004996     Medline TA:  Int Endod J     Country:  England    
Other Details:
Languages:  eng     Pagination:  241-50     Citation Subset:  D    
Affiliation:
Department of Conservative Dentistry, King's College London Dental Institute, London, UK.
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MeSH Terms
Descriptor/Qualifier:
Biofilms / drug effects*
Chi-Square Distribution
Dental Pulp Cavity / microbiology*
Enterococcus faecalis / drug effects*
Humans
Irrigation / instrumentation
Microscopy, Electron, Scanning
Observer Variation
Root Canal Irrigants / administration & dosage*
Root Canal Preparation / instrumentation*
Sodium Hypochlorite / administration & dosage*
Ultrasonics
Grant Support
ID/Acronym/Agency:
//Department of Health
Chemical
Reg. No./Substance:
0/Root Canal Irrigants; 7681-52-9/Sodium Hypochlorite

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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