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Article: Subgingival microbiota of shallow periodontal pockets in individuals after head and neck irradiation

TitleSubgingival microbiota of shallow periodontal pockets in individuals after head and neck irradiation
Authors
KeywordsChinese
Gingivitis
Head and neck irradiation
Microbiology
Nasopharyngeal carcinoma
Subgingival plaque
Issue Date1998
PublisherBlackwell Munksgaard. The Journal's web site is located at http://www.blackwellpublishing.com/journals/OMI
Citation
Oral Microbiology And Immunology, 1998, v. 13 n. 1, p. 1-10 How to Cite?
AbstractThis study aimed at investigating the subgingival plaque microorganisms of shallow pockets (≤5 mm) in subjects who previously received irradiation in the head and neck region for treatment of nasopharyngeal carcinoma. Direct microscopy and anaerobic culture were used. Subgingival paper point samples were taken from 6 tooth-sites (one/sextant) per subject for direct microscopy (n=108). Another set of paper points was taken from the deepest of the previously selected sites (one per subject) with: group A) no bleeding on probing to the sulcus depth (n=9) and group B) bleeding on probing to the sulcus depth (n=6) for microscopic and anaerobic culture study. Under the microscope, the microflora was found to be a complex mixture comprising gram-positive and gram-negative cocci, rods and filaments, fusiforms, curved rods and spirochetes. Low level of fungi were observed and mycelia were occasionally detected. There was no significant variation in the plaque bacterial morphotypes observable according to sites of isolation and no significant difference between group A and group B in morphotypes of the different microflora. The predominant cultivable microflora comprised several species of facultative and obligate anaerobic bacteria: Gemella, Peptostreptococcus, Staphylococus, Stomatococcus, Streptococcus, Actinomyces, Eubacterium, Lactobacillus, Propionibacterium, Neisseria, Veillonella, Bacteroides, Campylobacter, Capnocytophaga, Fusobacterium, Kingella, Porphyromonas and Prevotella species. There was no difference between the two groups except the significantly higher proportion of Kingella dentrificans isolated from group B sites. However, colonization of the gingival sulcus in these individuals by microbes that are normal flora of: skin (Peptostreptococcus prevotii and Propionibacterium granulosum) and gut (Eubacterium aerofaciens, Fusobacterium mortiferum and Fusobacterium varium) was detected. These findings appear to suggest that the major components of the subgingival microflora of shallow sites in previously head- and neck-irradiated individuals are similar to that of gingivitis sites in the normal population although they may contain bacterial or fungal species uncommon in normal subjects.
Persistent Identifierhttp://hdl.handle.net/10722/55438
ISSN
2011 Impact Factor: 2.807
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, WKen_HK
dc.contributor.authorJin, LJen_HK
dc.contributor.authorSamaranayake, LPen_HK
dc.contributor.authorChiu, GKCen_HK
dc.date.accessioned2009-08-06T03:37:06Z-
dc.date.available2009-08-06T03:37:06Z-
dc.date.issued1998en_HK
dc.identifier.citationOral Microbiology And Immunology, 1998, v. 13 n. 1, p. 1-10en_HK
dc.identifier.issn0902-0055en_HK
dc.identifier.urihttp://hdl.handle.net/10722/55438-
dc.description.abstractThis study aimed at investigating the subgingival plaque microorganisms of shallow pockets (≤5 mm) in subjects who previously received irradiation in the head and neck region for treatment of nasopharyngeal carcinoma. Direct microscopy and anaerobic culture were used. Subgingival paper point samples were taken from 6 tooth-sites (one/sextant) per subject for direct microscopy (n=108). Another set of paper points was taken from the deepest of the previously selected sites (one per subject) with: group A) no bleeding on probing to the sulcus depth (n=9) and group B) bleeding on probing to the sulcus depth (n=6) for microscopic and anaerobic culture study. Under the microscope, the microflora was found to be a complex mixture comprising gram-positive and gram-negative cocci, rods and filaments, fusiforms, curved rods and spirochetes. Low level of fungi were observed and mycelia were occasionally detected. There was no significant variation in the plaque bacterial morphotypes observable according to sites of isolation and no significant difference between group A and group B in morphotypes of the different microflora. The predominant cultivable microflora comprised several species of facultative and obligate anaerobic bacteria: Gemella, Peptostreptococcus, Staphylococus, Stomatococcus, Streptococcus, Actinomyces, Eubacterium, Lactobacillus, Propionibacterium, Neisseria, Veillonella, Bacteroides, Campylobacter, Capnocytophaga, Fusobacterium, Kingella, Porphyromonas and Prevotella species. There was no difference between the two groups except the significantly higher proportion of Kingella dentrificans isolated from group B sites. However, colonization of the gingival sulcus in these individuals by microbes that are normal flora of: skin (Peptostreptococcus prevotii and Propionibacterium granulosum) and gut (Eubacterium aerofaciens, Fusobacterium mortiferum and Fusobacterium varium) was detected. These findings appear to suggest that the major components of the subgingival microflora of shallow sites in previously head- and neck-irradiated individuals are similar to that of gingivitis sites in the normal population although they may contain bacterial or fungal species uncommon in normal subjects.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.rightsThe definitive version is available at www.blackwell-synergy.comen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectChineseen_HK
dc.subjectGingivitisen_HK
dc.subjectHead and neck irradiationen_HK
dc.subjectMicrobiologyen_HK
dc.subjectNasopharyngeal carcinomaen_HK
dc.subjectSubgingival plaqueen_HK
dc.subject.meshPeriodontal Pocket - microbiologyen_HK
dc.subject.meshNasopharyngeal Neoplasms - microbiology - radiotherapyen_HK
dc.subject.meshGingiva - microbiologyen_HK
dc.subject.meshCranial Irradiationen_HK
dc.subject.meshCarcinoma - microbiology - radiotherapyen_HK
dc.titleSubgingival microbiota of shallow periodontal pockets in individuals after head and neck irradiationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0902-0055&volume=13&issue=1&spage=1&epage=10&date=1998&atitle=Subgingival+microbiota+of+shallow+periodontal+pockets+in+individuals+after+head+and+neck+irradiationen_HK
dc.identifier.emailLeung, WK:ewkleung@hkucc.hku.hken_HK
dc.identifier.emailJin, LJ:ljjin@hkucc.hku.hken_HK
dc.identifier.emailSamaranayake, LP:lakshman@hku.hken_HK
dc.identifier.authorityLeung, WK=rp00019en_HK
dc.identifier.authorityJin, LJ=rp00028en_HK
dc.identifier.authoritySamaranayake, LP=rp00023en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1111/j.1399-302X.1998.tb00743.xen_HK
dc.identifier.pmid9573815-
dc.identifier.scopuseid_2-s2.0-0032007824en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032007824&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume13en_HK
dc.identifier.issue1en_HK
dc.identifier.spage1en_HK
dc.identifier.epage10en_HK
dc.identifier.isiWOS:000071691200001-
dc.publisher.placeDenmarken_HK
dc.identifier.scopusauthoridLeung, WK=25224691800en_HK
dc.identifier.scopusauthoridJin, LJ=7403328850en_HK
dc.identifier.scopusauthoridSamaranayake, LP=7102761002en_HK
dc.identifier.scopusauthoridChiu, GKC=35830714800en_HK

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