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Article: Residual periodontal defects distal to the mandibular second molar 6-36 months after impacted third molar extraction: A retrospective cross-sectional study of young adults

TitleResidual periodontal defects distal to the mandibular second molar 6-36 months after impacted third molar extraction: A retrospective cross-sectional study of young adults
Authors
KeywordsExtraction
Impacted tooth
Periodontal pocket
Periodontitis
Third molar
Issue Date2002
PublisherBlackwell Munksgaard. The Journal's web site is located at http://www.blackwellpublishing.com/journals/CPE
Citation
Journal Of Clinical Periodontology, 2002, v. 29 n. 11, p. 1004-1011 How to Cite?
AbstractAim: This retrospective study investigated the periodontal conditions distal to mandibular second molars 6-36 months after routine surgical extraction of adjacent impacted third molars. Method: Subjects were randomly selected by systematic sampling from computer records of 3211 surgical mandibular third molar extractions in the Hong Kong dental teaching hospital. Records and pre-extraction radiographs of the selected cases were retrieved. Selected subjects (n = 283) were invited for an interview followed by a clinical examination. Community Periodontal Index (CPI) protocol was used for the assessment of the general periodontal status (excluding the mandibular second molar of interest, i.e. the subject tooth) followed by a detailed periodontal examination of the subject tooth. Results: In all, 158 subjects, aged 29 ± 7 years, were examined with only 6% (nine subjects) having a highest CPI score of 4 (excluding the subject tooth), but local periodontal defects were prevalent at the distal surface of subject mandibular second molars: mean probing pocket depth (PPD) was 5.4 ± 1.9 mm with 67% (106 subjects) exhibiting PPD ≥ 5 mm and 23% (36 subjects) exhibiting PPD ≥ 7 mm; mean recession was 0.8 ± 1.0 mm; bleeding on probing 96% and suppuration on probing 5%. Multiple linear regression analysis was used to analyse the effects of 12 independent variables on the PPD at the distal surface of the involved mandibular second molar. Three possible risk indicators (P < 0.001, R 2 = 0.27) associated with localised increased PPD at the distal surface of the mandibular second molars were identified: 1) third molar 'mesio-angular' impaction; 2) pre-extraction crestal radiolucency and 3) inadequate post-extraction local plaque control. Conclusion: The results suggest that periodontal breakdown initiated and established on the distal surface of a mandibular second molar in the vicinity of a 'mesio-angular' impacted third molar evidenced by pre-extraction crestal radiolucency in association with inadequate plaque control after extraction can predispose to a persistent localised periodontal problem. © Blackwell Munksgaard, 2002.
Persistent Identifierhttp://hdl.handle.net/10722/55448
ISSN
2015 Impact Factor: 3.915
2015 SCImago Journal Rankings: 1.848
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKwok, WKen_HK
dc.contributor.authorLiu, JKSen_HK
dc.contributor.authorLo, ECMen_HK
dc.contributor.authorCorbet, EFen_HK
dc.contributor.authorLeung, WKen_HK
dc.date.accessioned2009-08-06T03:37:47Z-
dc.date.available2009-08-06T03:37:47Z-
dc.date.issued2002en_HK
dc.identifier.citationJournal Of Clinical Periodontology, 2002, v. 29 n. 11, p. 1004-1011en_HK
dc.identifier.issn0303-6979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/55448-
dc.description.abstractAim: This retrospective study investigated the periodontal conditions distal to mandibular second molars 6-36 months after routine surgical extraction of adjacent impacted third molars. Method: Subjects were randomly selected by systematic sampling from computer records of 3211 surgical mandibular third molar extractions in the Hong Kong dental teaching hospital. Records and pre-extraction radiographs of the selected cases were retrieved. Selected subjects (n = 283) were invited for an interview followed by a clinical examination. Community Periodontal Index (CPI) protocol was used for the assessment of the general periodontal status (excluding the mandibular second molar of interest, i.e. the subject tooth) followed by a detailed periodontal examination of the subject tooth. Results: In all, 158 subjects, aged 29 ± 7 years, were examined with only 6% (nine subjects) having a highest CPI score of 4 (excluding the subject tooth), but local periodontal defects were prevalent at the distal surface of subject mandibular second molars: mean probing pocket depth (PPD) was 5.4 ± 1.9 mm with 67% (106 subjects) exhibiting PPD ≥ 5 mm and 23% (36 subjects) exhibiting PPD ≥ 7 mm; mean recession was 0.8 ± 1.0 mm; bleeding on probing 96% and suppuration on probing 5%. Multiple linear regression analysis was used to analyse the effects of 12 independent variables on the PPD at the distal surface of the involved mandibular second molar. Three possible risk indicators (P < 0.001, R 2 = 0.27) associated with localised increased PPD at the distal surface of the mandibular second molars were identified: 1) third molar 'mesio-angular' impaction; 2) pre-extraction crestal radiolucency and 3) inadequate post-extraction local plaque control. Conclusion: The results suggest that periodontal breakdown initiated and established on the distal surface of a mandibular second molar in the vicinity of a 'mesio-angular' impacted third molar evidenced by pre-extraction crestal radiolucency in association with inadequate plaque control after extraction can predispose to a persistent localised periodontal problem. © Blackwell Munksgaard, 2002.en_HK
dc.languageengen_HK
dc.publisherBlackwell Munksgaard. The Journal's web site is located at http://www.blackwellpublishing.com/journals/CPEen_HK
dc.relation.ispartofJournal of Clinical Periodontologyen_HK
dc.rightsThe definitive version is available at www.blackwell-synergy.comen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectExtractionen_HK
dc.subjectImpacted toothen_HK
dc.subjectPeriodontal pocketen_HK
dc.subjectPeriodontitisen_HK
dc.subjectThird molaren_HK
dc.subject.meshPeriodontal Diseases - classification - etiologyen_HK
dc.subject.meshTooth Extraction - adverse effectsen_HK
dc.subject.meshTooth, Impacted - surgeryen_HK
dc.subject.meshMolar, Third - surgeryen_HK
dc.subject.meshMolar - pathologyen_HK
dc.titleResidual periodontal defects distal to the mandibular second molar 6-36 months after impacted third molar extraction: A retrospective cross-sectional study of young adultsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0303-6979&volume=29&issue=11&spage=1004&epage=1011&date=2002&atitle=Residual+periodontal+defects+distal+to+the+mandibular+second+molar+6–36months+after+impacted+third+molar+extraction:+A+retrospective+cross-sectional+study+of+young+adultsen_HK
dc.identifier.emailLo, ECM:hrdplcm@hkucc.hku.hken_HK
dc.identifier.emailCorbet, EF:efcorbet@hku.hken_HK
dc.identifier.emailLeung, WK:ewkleung@hkucc.hku.hken_HK
dc.identifier.authorityLo, ECM=rp00015en_HK
dc.identifier.authorityCorbet, EF=rp00005en_HK
dc.identifier.authorityLeung, WK=rp00019en_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1034/j.1600-051X.2002.291105.xen_HK
dc.identifier.pmid12472993-
dc.identifier.scopuseid_2-s2.0-0036834261en_HK
dc.identifier.hkuros80747-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036834261&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume29en_HK
dc.identifier.issue11en_HK
dc.identifier.spage1004en_HK
dc.identifier.epage1011en_HK
dc.identifier.isiWOS:000179751200005-
dc.publisher.placeDenmarken_HK
dc.identifier.scopusauthoridKwok, WK=15122510900en_HK
dc.identifier.scopusauthoridLiu, JKS=8590604700en_HK
dc.identifier.scopusauthoridLo, ECM=7101705982en_HK
dc.identifier.scopusauthoridCorbet, EF=35609873200en_HK
dc.identifier.scopusauthoridLeung, WK=25224691800en_HK

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