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Article: Correlation of radiographic signs, inferior dental nerve exposure, and deficit in third molar surgery

TitleCorrelation of radiographic signs, inferior dental nerve exposure, and deficit in third molar surgery
Authors
KeywordsAdult
Article
Cohort Analysis
Controlled Study
Dental Surgery
Excision
Female
Human
Inferior Alveolar Nerve
Inferior Alveolar Nerve Injury
Major Clinical Study
Male
Molar Tooth
Nerve Injury
Panoramic Radiography
Postoperative Complication
Postoperative Period
Prediction
Prospective Study
Tooth Root Canal
Issue Date2011
PublisherWB Saunders Co. The Journal's web site is located at http://www.elsevier.com/locate/joms
Citation
Journal Of Oral And Maxillofacial Surgery, 2011, v. 69 n. 7, p. 1873-1879 How to Cite?
AbstractPurpose: To identify the specific radiographic signs on orthopantomograms that are positive predictors of intraoperative inferior dental nerve (IDN) exposure and postoperative IDN deficit in lower third molar surgery. Materials and Methods: A prospective clinical cohort of patients with lower third molars with specific radiographic signs showing a close proximity of the roots to the IDN who underwent total excision at our center from June 2006 to June 2008 were recruited as the study group. The prevalence of intraoperative IDN exposure and postoperative IDN deficit were recorded. The correlations between the various radiographic signs and the prevalence of IDN exposure and deficit were analyzed. The prevalence of IDN deficit in the sample was compared with an age-, gender-, and operator experience-matched control group of patients who had undergone lower third molar surgery without any of the radiographic signs present. Results: Patients with a total of 178 lower third molars with 1 or more of the specific radiographic signs present were recruited as the study group. The prevalence of IDN deficit in the study group (5.1%) was significantly greater than that in the control group (0.56%; P = .01). In the study group, darkening of root and displacement of the inferior dental canal by the root were radiographic signs significantly related to IDN exposure (P = .001 and P = .019, respectively). Darkening of the root was the only sign significantly related to a postoperative IDN deficit (P = .016). When 2 or more radiographic signs were present, the risk of a postoperative IDN deficit was significantly increased (P = .001). Conclusions: Darkening of the root and displacement of the inferior dental canal by the root were positive predictors of intraoperative IDN exposure. Darkening of the root or the presence of 2 or more radiographic signs were positive predictors of a postoperative IDN deficit. © 2011 American Association of Oral and Maxillofacial Surgeons.
Persistent Identifierhttp://hdl.handle.net/10722/141678
ISSN
2015 Impact Factor: 1.631
2015 SCImago Journal Rankings: 0.824
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, YYen_HK
dc.contributor.authorCheung, LKen_HK
dc.date.accessioned2011-09-27T02:57:45Z-
dc.date.available2011-09-27T02:57:45Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Oral And Maxillofacial Surgery, 2011, v. 69 n. 7, p. 1873-1879en_HK
dc.identifier.issn0278-2391en_HK
dc.identifier.urihttp://hdl.handle.net/10722/141678-
dc.description.abstractPurpose: To identify the specific radiographic signs on orthopantomograms that are positive predictors of intraoperative inferior dental nerve (IDN) exposure and postoperative IDN deficit in lower third molar surgery. Materials and Methods: A prospective clinical cohort of patients with lower third molars with specific radiographic signs showing a close proximity of the roots to the IDN who underwent total excision at our center from June 2006 to June 2008 were recruited as the study group. The prevalence of intraoperative IDN exposure and postoperative IDN deficit were recorded. The correlations between the various radiographic signs and the prevalence of IDN exposure and deficit were analyzed. The prevalence of IDN deficit in the sample was compared with an age-, gender-, and operator experience-matched control group of patients who had undergone lower third molar surgery without any of the radiographic signs present. Results: Patients with a total of 178 lower third molars with 1 or more of the specific radiographic signs present were recruited as the study group. The prevalence of IDN deficit in the study group (5.1%) was significantly greater than that in the control group (0.56%; P = .01). In the study group, darkening of root and displacement of the inferior dental canal by the root were radiographic signs significantly related to IDN exposure (P = .001 and P = .019, respectively). Darkening of the root was the only sign significantly related to a postoperative IDN deficit (P = .016). When 2 or more radiographic signs were present, the risk of a postoperative IDN deficit was significantly increased (P = .001). Conclusions: Darkening of the root and displacement of the inferior dental canal by the root were positive predictors of intraoperative IDN exposure. Darkening of the root or the presence of 2 or more radiographic signs were positive predictors of a postoperative IDN deficit. © 2011 American Association of Oral and Maxillofacial Surgeons.en_HK
dc.languageengen_US
dc.publisherWB Saunders Co. The Journal's web site is located at http://www.elsevier.com/locate/jomsen_HK
dc.relation.ispartofJournal of Oral and Maxillofacial Surgeryen_HK
dc.subjectAdulten_US
dc.subjectArticleen_US
dc.subjectCohort Analysisen_US
dc.subjectControlled Studyen_US
dc.subjectDental Surgeryen_US
dc.subjectExcisionen_US
dc.subjectFemaleen_US
dc.subjectHumanen_US
dc.subjectInferior Alveolar Nerveen_US
dc.subjectInferior Alveolar Nerve Injuryen_US
dc.subjectMajor Clinical Studyen_US
dc.subjectMaleen_US
dc.subjectMolar Toothen_US
dc.subjectNerve Injuryen_US
dc.subjectPanoramic Radiographyen_US
dc.subjectPostoperative Complicationen_US
dc.subjectPostoperative Perioden_US
dc.subjectPredictionen_US
dc.subjectProspective Studyen_US
dc.subjectTooth Root Canalen_US
dc.subject.meshAdolescenten_HK
dc.subject.meshAdulten_HK
dc.subject.meshAge Factorsen_HK
dc.subject.meshCase-Control Studiesen_HK
dc.subject.meshChin - innervationen_HK
dc.subject.meshCohort Studiesen_HK
dc.subject.meshFemaleen_HK
dc.subject.meshFollow-Up Studiesen_HK
dc.subject.meshHumansen_HK
dc.subject.meshIntraoperative Complicationsen_HK
dc.subject.meshLip - innervationen_HK
dc.subject.meshMaleen_HK
dc.subject.meshMandible - innervation - radiography - surgeryen_HK
dc.subject.meshMandibular Nerve - radiographyen_HK
dc.subject.meshMiddle Ageden_HK
dc.subject.meshMolar, Third - radiography - surgeryen_HK
dc.subject.meshPain Threshold - physiologyen_HK
dc.subject.meshPostoperative Complicationsen_HK
dc.subject.meshProspective Studiesen_HK
dc.subject.meshRadiography, Panoramicen_HK
dc.subject.meshRisk Factorsen_HK
dc.subject.meshSensory Thresholds - physiologyen_HK
dc.subject.meshTooth Extractionen_HK
dc.subject.meshTooth Root - radiographyen_HK
dc.subject.meshTooth Socket - innervation - pathologyen_HK
dc.subject.meshTooth, Impacted - radiography - surgeryen_HK
dc.subject.meshTouch - physiologyen_HK
dc.subject.meshTreatment Outcomeen_HK
dc.subject.meshTrigeminal Nerve Injuriesen_HK
dc.subject.meshYoung Adulten_HK
dc.titleCorrelation of radiographic signs, inferior dental nerve exposure, and deficit in third molar surgeryen_HK
dc.typeArticleen_HK
dc.identifier.emailLeung, YY:mleung04@hku.hken_HK
dc.identifier.emailCheung, LK:lkcheung@hkucc.hku.hken_HK
dc.identifier.authorityLeung, YY=rp01522en_HK
dc.identifier.authorityCheung, LK=rp00013en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.joms.2010.11.017en_HK
dc.identifier.pmid21371801-
dc.identifier.scopuseid_2-s2.0-79959378256en_HK
dc.identifier.hkuros201196-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79959378256&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume69en_HK
dc.identifier.issue7en_HK
dc.identifier.spage1873en_HK
dc.identifier.epage1879en_HK
dc.identifier.eissn1531-5053-
dc.identifier.isiWOS:000292495600018-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLeung, YY=34978641900en_HK
dc.identifier.scopusauthoridCheung, LK=7102302747en_HK

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