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Article: Factors associated with the removal of fractured NiTi instruments from root canal systems

TitleFactors associated with the removal of fractured NiTi instruments from root canal systems
Authors
Issue Date2004
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 Endodontology, 2004, v. 98 n. 5, p. 605-610 How to Cite?
AbstractObjective To evaluate the influence of various factors on the success or failure of attempts to remove fragments of separated NiTi instruments from root canals. Study design Instrument removal attempts were undertaken on 72 teeth with a separated NiTi instrument using a variety of techniques and armamentarium. Factors including type of tooth, degree of root canal curvature, location of fragment in relation to the root canal curvature, and radiographic length of fragment were analyzed. A success of treatment was defined as removal or complete bypassing of the fragments. Results The overall success rate was 53%. The success rate for ProFile fragments was 41% and for the NiTi K-file 60%. The success rate in maxillary teeth was higher than that in mandibular teeth. Of 52 instruments in molars, 28 were successfully removed or bypassed. Of the 12 fragments in premolars, only 2 were removed. All 8 cases in anterior teeth were retrieved completely. When the fragment was localized before the curvature, complete removal was achieved. When the fragments were located at and beyond the curvature, the success rates were 60% and 31%, respectively. In canals with a slight, moderate, and severe curvature, the success rates were 100%, 83%, and 43%, respectively. In general, the longer the fragment, the greater the chance for successful removal or bypass. Conclusions Favorable factors for removal of separated NiTi fragments are straight root canals, anterior teeth, localization before the curvature, fragments longer than 5 mm, and hand NiTi K-file.
Persistent Identifierhttp://hdl.handle.net/10722/154738
ISSN
2011 Impact Factor: 1.457
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorShen, Yen_US
dc.contributor.authorPeng, Ben_US
dc.contributor.authorCheung, GSPen_US
dc.date.accessioned2012-08-08T08:27:12Z-
dc.date.available2012-08-08T08:27:12Z-
dc.date.issued2004en_US
dc.identifier.citationOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology And Endodontology, 2004, v. 98 n. 5, p. 605-610en_US
dc.identifier.issn1079-2104en_US
dc.identifier.urihttp://hdl.handle.net/10722/154738-
dc.description.abstractObjective To evaluate the influence of various factors on the success or failure of attempts to remove fragments of separated NiTi instruments from root canals. Study design Instrument removal attempts were undertaken on 72 teeth with a separated NiTi instrument using a variety of techniques and armamentarium. Factors including type of tooth, degree of root canal curvature, location of fragment in relation to the root canal curvature, and radiographic length of fragment were analyzed. A success of treatment was defined as removal or complete bypassing of the fragments. Results The overall success rate was 53%. The success rate for ProFile fragments was 41% and for the NiTi K-file 60%. The success rate in maxillary teeth was higher than that in mandibular teeth. Of 52 instruments in molars, 28 were successfully removed or bypassed. Of the 12 fragments in premolars, only 2 were removed. All 8 cases in anterior teeth were retrieved completely. When the fragment was localized before the curvature, complete removal was achieved. When the fragments were located at and beyond the curvature, the success rates were 60% and 31%, respectively. In canals with a slight, moderate, and severe curvature, the success rates were 100%, 83%, and 43%, respectively. In general, the longer the fragment, the greater the chance for successful removal or bypass. Conclusions Favorable factors for removal of separated NiTi fragments are straight root canals, anterior teeth, localization before the curvature, fragments longer than 5 mm, and hand NiTi K-file.en_US
dc.languageengen_US
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/tripleoen_US
dc.relation.ispartofOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontologyen_US
dc.subject.meshBicuspid - Pathologyen_US
dc.subject.meshCuspid - Pathologyen_US
dc.subject.meshDental Alloysen_US
dc.subject.meshDental Pulp Cavity - Pathology - Radiographyen_US
dc.subject.meshEquipment Designen_US
dc.subject.meshEquipment Failureen_US
dc.subject.meshForeign Bodies - Pathology - Therapyen_US
dc.subject.meshHumansen_US
dc.subject.meshIncisor - Pathologyen_US
dc.subject.meshMandibleen_US
dc.subject.meshMaxillaen_US
dc.subject.meshMolar - Pathologyen_US
dc.subject.meshNickelen_US
dc.subject.meshRoot Canal Preparation - Adverse Effects - Instrumentationen_US
dc.subject.meshSurface Propertiesen_US
dc.subject.meshTitaniumen_US
dc.subject.meshTreatment Outcomeen_US
dc.titleFactors associated with the removal of fractured NiTi instruments from root canal systemsen_US
dc.typeArticleen_US
dc.identifier.emailCheung, GSP:spcheung@hkucc.hku.hken_US
dc.identifier.authorityCheung, GSP=rp00016en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.tripleo.2004.04.011en_US
dc.identifier.pmid15529134-
dc.identifier.scopuseid_2-s2.0-8644223426en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-8644223426&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume98en_US
dc.identifier.issue5en_US
dc.identifier.spage605en_US
dc.identifier.epage610en_US
dc.identifier.isiWOS:000225092100018-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridShen, Y=7404767171en_US
dc.identifier.scopusauthoridPeng, B=7102873002en_US
dc.identifier.scopusauthoridCheung, GSP=7005809531en_US

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