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Article: Microbial flora of root canal-treated teeth associated with asymptomatic periapical radiolucent lesions

TitleMicrobial flora of root canal-treated teeth associated with asymptomatic periapical radiolucent lesions
Authors
Issue Date2001
PublisherBlackwell Munksgaard. The Journal's web site is located at http://www.blackwellpublishing.com/journals/OMI
Citation
Oral Microbiology And Immunology, 2001, v. 16 n. 6, p. 332-337 How to Cite?
AbstractThis study aimed to investigate the composition of microflora in endodontically treated teeth associated with asymptomatic periapical lesions in southern Chinese patients. Twenty-four teeth which had received nonsurgical root canal treatment more than 4 years previously, and which presents an acceptable coronal restoration with a periapical radiolucent area, were re-treated nonsurgically. Bacteriological samples were obtained after removal of the old root canal filling. The samples were inoculated on enriched trypticase soy agar and four selective media for incubation at 37°C in both a carbon dioxide-enriched atmosphere and anaerobically. Eighteen teeth that had received guttapercha root canal fillings were grouped for analysis, 12 (66.7%) of which contained cultivable microorganisms. The total colony forming units per ml of transport medium ranged from 0 to 2.3×105. The number of bacterial genera recovered ranged between 0 and 6, with facultative gram-positive cocci being the most prevalent group of bacteria isolated. Facultative anaerobic bacteria were present in all, whereas strict anaerobic bacteria were found in 3 out of the 12 teeth with positive growth. The size of the periapical rarefaction did not show any relationship with the quantity of microorganisms recovered. Coagulase-negative staphylococci, streptococci and Pseudomonas aeruginosa were most frequently isolated in this group of patients. The possible origin of these organisms is discussed.
Persistent Identifierhttp://hdl.handle.net/10722/67157
ISSN
2011 Impact Factor: 2.807
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheung, GSPen_HK
dc.contributor.authorHo, MWMen_HK
dc.date.accessioned2010-09-06T05:52:26Z-
dc.date.available2010-09-06T05:52:26Z-
dc.date.issued2001en_HK
dc.identifier.citationOral Microbiology And Immunology, 2001, v. 16 n. 6, p. 332-337en_HK
dc.identifier.issn0902-0055en_HK
dc.identifier.urihttp://hdl.handle.net/10722/67157-
dc.description.abstractThis study aimed to investigate the composition of microflora in endodontically treated teeth associated with asymptomatic periapical lesions in southern Chinese patients. Twenty-four teeth which had received nonsurgical root canal treatment more than 4 years previously, and which presents an acceptable coronal restoration with a periapical radiolucent area, were re-treated nonsurgically. Bacteriological samples were obtained after removal of the old root canal filling. The samples were inoculated on enriched trypticase soy agar and four selective media for incubation at 37°C in both a carbon dioxide-enriched atmosphere and anaerobically. Eighteen teeth that had received guttapercha root canal fillings were grouped for analysis, 12 (66.7%) of which contained cultivable microorganisms. The total colony forming units per ml of transport medium ranged from 0 to 2.3×105. The number of bacterial genera recovered ranged between 0 and 6, with facultative gram-positive cocci being the most prevalent group of bacteria isolated. Facultative anaerobic bacteria were present in all, whereas strict anaerobic bacteria were found in 3 out of the 12 teeth with positive growth. The size of the periapical rarefaction did not show any relationship with the quantity of microorganisms recovered. Coagulase-negative staphylococci, streptococci and Pseudomonas aeruginosa were most frequently isolated in this group of patients. The possible origin of these organisms is discussed.en_HK
dc.languageengen_HK
dc.publisherBlackwell Munksgaard. The Journal's web site is located at http://www.blackwellpublishing.com/journals/OMIen_HK
dc.relation.ispartofOral Microbiology and Immunologyen_HK
dc.subject.meshBacteria - classification - growth & developmenten_HK
dc.subject.meshBacteria, Anaerobic - classification - growth & developmenten_HK
dc.subject.meshBacteriological Techniquesen_HK
dc.subject.meshChinaen_HK
dc.subject.meshColony Count, Microbialen_HK
dc.subject.meshConfidence Intervalsen_HK
dc.subject.meshDental Pulp Cavity - microbiologyen_HK
dc.subject.meshFollow-Up Studiesen_HK
dc.subject.meshGram-Positive Bacteria - classification - growth & developmenten_HK
dc.subject.meshGutta-Perchaen_HK
dc.subject.meshHumansen_HK
dc.subject.meshPeriapical Diseases - microbiologyen_HK
dc.subject.meshPseudomonas aeruginosa - growth & developmenten_HK
dc.subject.meshRetreatmenten_HK
dc.subject.meshRoot Canal Filling Materialsen_HK
dc.subject.meshRoot Canal Therapyen_HK
dc.subject.meshStaphylococcus - classification - growth & developmenten_HK
dc.subject.meshStatistics, Nonparametricen_HK
dc.subject.meshStreptococcus - classification - growth & developmenten_HK
dc.titleMicrobial flora of root canal-treated teeth associated with asymptomatic periapical radiolucent lesionsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0902-0055&volume=16&spage=332&epage=337&date=2001&atitle=Microbial+flora+of+root+canal-treated+teeth+associated+with+asymptomatic+periapical+radiolucent+lesionsen_HK
dc.identifier.emailCheung, GSP:spcheung@hkucc.hku.hken_HK
dc.identifier.authorityCheung, GSP=rp00016en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1034/j.1399-302X.2001.160603.xen_HK
dc.identifier.pmid11737655-
dc.identifier.scopuseid_2-s2.0-0035175386en_HK
dc.identifier.hkuros67548en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035175386&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume16en_HK
dc.identifier.issue6en_HK
dc.identifier.spage332en_HK
dc.identifier.epage337en_HK
dc.identifier.isiWOS:000172556600003-
dc.publisher.placeDenmarken_HK
dc.identifier.scopusauthoridCheung, GSP=7005809531en_HK
dc.identifier.scopusauthoridHo, MWM=7403080527en_HK

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