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Article: Survival of first-time nonsurgical root canal treatment performed in a dental teaching hospital

TitleSurvival of first-time nonsurgical root canal treatment performed in a dental teaching hospital
Authors
Issue Date2002
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/tripleo
Citation
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, And Endodontics, 2002, v. 93 n. 5, p. 596-604 How to Cite?
AbstractObjective. The purpose of this study was to use survival analysis to evaluate the long-term treatment outcome of first-time, nonsurgical root canal therapy performed in a dental teaching hospital and to identify factors that might affect that outcome. Study design. One-tenth of all teeth treated between 1989 and 1994 were sampled. Patients were invited to return for a recall and were examined both clinically and radiographically. Any teeth that had been extracted or retreated or that were associated with a periapical radiolucency or presented with clinical signs and symptoms were deemed to have failed. An adjusted date of failure was calculated in the survival analysis by means of the Kaplan-Meier method. Ten covariables were further analyzed with the Cox regression model by using a backward stepwise regression method. Results. Of 550 sampled teeth, 251 were examined. The mean observation period was 74 months. The failure rate was 44% (n = 111), with a median survival time of 113 months (mean, 91 months). Use of the Cox Regression model revealed that tooth type was significant in affecting the survival time of the treatment. Radiographic presence of voids in the apical and middle thirds of root canal fillings was associated with a significantly lower mean survival time than the presence of voids found in the coronal third or no void at all. The use of a calcium hydroxide dressing after initial treatment was associated with a longer survival time than failure to use medication or dressing with Ledermix alone. Conclusion. Simple calculation of percentages did not provide sufficient information on the treatment prognosis. The survival of first-time root canal therapy was significantly influenced by the tooth type, radiographic location of voids in the root canal filling, and the intracanal medicament used. © 2002 Mosby, Inc. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/66120
ISSN
2011 Impact Factor: 1.457
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheung, GSPen_HK
dc.date.accessioned2010-09-06T05:43:44Z-
dc.date.available2010-09-06T05:43:44Z-
dc.date.issued2002en_HK
dc.identifier.citationOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, And Endodontics, 2002, v. 93 n. 5, p. 596-604en_HK
dc.identifier.issn1079-2104en_HK
dc.identifier.urihttp://hdl.handle.net/10722/66120-
dc.description.abstractObjective. The purpose of this study was to use survival analysis to evaluate the long-term treatment outcome of first-time, nonsurgical root canal therapy performed in a dental teaching hospital and to identify factors that might affect that outcome. Study design. One-tenth of all teeth treated between 1989 and 1994 were sampled. Patients were invited to return for a recall and were examined both clinically and radiographically. Any teeth that had been extracted or retreated or that were associated with a periapical radiolucency or presented with clinical signs and symptoms were deemed to have failed. An adjusted date of failure was calculated in the survival analysis by means of the Kaplan-Meier method. Ten covariables were further analyzed with the Cox regression model by using a backward stepwise regression method. Results. Of 550 sampled teeth, 251 were examined. The mean observation period was 74 months. The failure rate was 44% (n = 111), with a median survival time of 113 months (mean, 91 months). Use of the Cox Regression model revealed that tooth type was significant in affecting the survival time of the treatment. Radiographic presence of voids in the apical and middle thirds of root canal fillings was associated with a significantly lower mean survival time than the presence of voids found in the coronal third or no void at all. The use of a calcium hydroxide dressing after initial treatment was associated with a longer survival time than failure to use medication or dressing with Ledermix alone. Conclusion. Simple calculation of percentages did not provide sufficient information on the treatment prognosis. The survival of first-time root canal therapy was significantly influenced by the tooth type, radiographic location of voids in the root canal filling, and the intracanal medicament used. © 2002 Mosby, Inc. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/tripleoen_HK
dc.relation.ispartofOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodonticsen_HK
dc.rightsOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology. Copyright © Mosby, Inc.en_HK
dc.subject.meshCalcium Hydroxide - therapeutic useen_HK
dc.subject.meshDemeclocycline - therapeutic useen_HK
dc.subject.meshDental Pulp Cavity - radiographyen_HK
dc.subject.meshDrug Combinationsen_HK
dc.subject.meshEndodontics - educationen_HK
dc.subject.meshFemaleen_HK
dc.subject.meshFollow-Up Studiesen_HK
dc.subject.meshHospitals, Teachingen_HK
dc.subject.meshHumansen_HK
dc.subject.meshLinear Modelsen_HK
dc.subject.meshMaleen_HK
dc.subject.meshPeriapical Diseases - etiology - radiographyen_HK
dc.subject.meshPrognosisen_HK
dc.subject.meshProportional Hazards Modelsen_HK
dc.subject.meshRegression Analysisen_HK
dc.subject.meshRetreatmenten_HK
dc.subject.meshRoot Canal Filling Materials - therapeutic useen_HK
dc.subject.meshRoot Canal Irrigants - therapeutic useen_HK
dc.subject.meshRoot Canal Therapyen_HK
dc.subject.meshSurvival Analysisen_HK
dc.subject.meshTooth - pathologyen_HK
dc.subject.meshTooth Extractionen_HK
dc.subject.meshTreatment Failureen_HK
dc.subject.meshTreatment Outcomeen_HK
dc.subject.meshTriamcinolone Acetonide - therapeutic useen_HK
dc.titleSurvival of first-time nonsurgical root canal treatment performed in a dental teaching hospitalen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1079-2104&volume=93&spage=596&epage=604&date=2002&atitle=Survival+of+first-time+nonsurgical+root+canal+treatment+performed+in+a+dental+teaching+hospitalen_HK
dc.identifier.emailCheung, GSP:spcheung@hkucc.hku.hken_HK
dc.identifier.authorityCheung, GSP=rp00016en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1067/moe.2002.120254en_HK
dc.identifier.pmid12075211-
dc.identifier.scopuseid_2-s2.0-0036562115en_HK
dc.identifier.hkuros68074en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036562115&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume93en_HK
dc.identifier.issue5en_HK
dc.identifier.spage596en_HK
dc.identifier.epage604en_HK
dc.identifier.isiWOS:000176523800019-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridCheung, GSP=7005809531en_HK

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