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Article: A preliminary investigation into the longevity and causes of failure of single unit extracoronal restorations

TitleA preliminary investigation into the longevity and causes of failure of single unit extracoronal restorations
Authors
Issue Date1991
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jdent
Citation
Journal Of Dentistry, 1991, v. 19 n. 3, p. 160-163 How to Cite?
AbstractFour types of single unit restoration, including porcelain jacket, full and partial veneer, and metal ceramic crowns provided at the Prince Philip Dental Hospital in Hong Kong were investigated for evidence of failure. Of the 4658 units of restoration provided between 1981 and 1989, 100 restorations of each type were selected at random by computer. The relevant patients were identified and invited to return for a review appointment. A total of 132 patients attended and 152 crowns were examined. The average length of service was 34 months at the date of examination. Using strict criteria, 21(14 per cent) restorations were deemed to have failed. Technical failure was the most prevalent cause of failure, followed by aesthetic complaints and endodontic problems. The failure rates ranged from 2.4 to 7.8 per cent per year for the different crowns in order of. partial veneer < full veneer < metal ceramic < porcelain jacket crowns. Fracture of restoration, which affected metal ceramic and porcelain jacket crowns, was the single most frequent cause of failure observed in this study. © 1991.
Persistent Identifierhttp://hdl.handle.net/10722/153753
ISSN
2015 Impact Factor: 3.109
2015 SCImago Journal Rankings: 1.029
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCheung, GSPen_US
dc.date.accessioned2012-08-08T08:21:24Z-
dc.date.available2012-08-08T08:21:24Z-
dc.date.issued1991en_US
dc.identifier.citationJournal Of Dentistry, 1991, v. 19 n. 3, p. 160-163en_US
dc.identifier.issn0300-5712en_US
dc.identifier.urihttp://hdl.handle.net/10722/153753-
dc.description.abstractFour types of single unit restoration, including porcelain jacket, full and partial veneer, and metal ceramic crowns provided at the Prince Philip Dental Hospital in Hong Kong were investigated for evidence of failure. Of the 4658 units of restoration provided between 1981 and 1989, 100 restorations of each type were selected at random by computer. The relevant patients were identified and invited to return for a review appointment. A total of 132 patients attended and 152 crowns were examined. The average length of service was 34 months at the date of examination. Using strict criteria, 21(14 per cent) restorations were deemed to have failed. Technical failure was the most prevalent cause of failure, followed by aesthetic complaints and endodontic problems. The failure rates ranged from 2.4 to 7.8 per cent per year for the different crowns in order of. partial veneer < full veneer < metal ceramic < porcelain jacket crowns. Fracture of restoration, which affected metal ceramic and porcelain jacket crowns, was the single most frequent cause of failure observed in this study. © 1991.en_US
dc.languageengen_US
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jdenten_US
dc.relation.ispartofJournal of Dentistryen_US
dc.subject.meshAdulten_US
dc.subject.meshAgeden_US
dc.subject.meshCrownsen_US
dc.subject.meshDental Alloysen_US
dc.subject.meshDental Porcelainen_US
dc.subject.meshDental Veneersen_US
dc.subject.meshDenture Designen_US
dc.subject.meshEsthetics, Dentalen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshMaleen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshProsthesis Failureen_US
dc.subject.meshRoot Canal Therapyen_US
dc.subject.meshSurface Propertiesen_US
dc.subject.meshTime Factorsen_US
dc.titleA preliminary investigation into the longevity and causes of failure of single unit extracoronal restorationsen_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.pmid1939816-
dc.identifier.scopuseid_2-s2.0-0026180337en_US
dc.identifier.volume19en_US
dc.identifier.issue3en_US
dc.identifier.spage160en_US
dc.identifier.epage163en_US
dc.identifier.isiWOS:A1991FT51600004-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridCheung, GSP=7005809531en_US

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