| 5-year follow-up of a prospective clinical study on various types of core restorations. | |
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MedLine Citation:
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PMID: 15754890 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: This study tested whether: (1) the survival rate of cast post-and-core restorations is better than the survival of direct post-and-core restorations and post-free all-composite cores; and (2)the survival of these buildup restorations is influenced by the remaining dentin height after preparation. MATERIALS AND METHODS: In a clinical trial, 18 operators made 319 core restorations in 249 patients. The restorations involved were: (1) cast post-and-core restorations; (2) direct post and composite core restorations; and (3) post-free all-composite cores. All restorations were made under single porcelain-fused-to-metal crowns. Treatments were allocated after dentin height assessment using balanced drawing. Failures were registered during a 5-year period. RESULTS: Fifteen restorations failed during the follow-up period. Five failures occurred during the first month; they were considered to be independent from clinical aging and excluded from further survival assessments. The overall survival was 96%+/-2%. No difference was found between the survivals of the different types of restorations. The factor "remaining dentin height" appeared to have a significant effect on the survival of post-and-core restorations (98%+/-2% survival for "substantial dentin height" vs 93%+/-3% for "minimal dentin height"). CONCLUSION: The type of post and core was not relevant with respect to survival. The amount of remaining dentin height after preparation influenced the longevity of a post-and-core restoration. |
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Authors:
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Nico H J Creugers; Arno G M Mentink; Wietske A Fokkinga; Cees M Kreulen |
Publication Detail:
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Type: Clinical Trial; Journal Article; Multicenter Study; Randomized Controlled Trial |
Journal Detail:
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Title: The International journal of prosthodontics Volume: 18 ISSN: 0893-2174 ISO Abbreviation: Int J Prosthodont Publication Date: 2005 Jan-Feb |
Date Detail:
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Created Date: 2005-03-09 Completed Date: 2005-03-29 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8900938 Medline TA: Int J Prosthodont Country: United States |
Other Details:
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Languages: eng Pagination: 34-9 Citation Subset: D |
Affiliation:
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Department of Oral Function and Prosthetic Dentistry, College of Dental Science, University Medical Centre Nijmegen, University of Nijmegen, Nijmegen 6500 HB, The Netherlands. n.creugers@dent.umcn.nl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Composite Resins Crowns Dental Casting Technique Dental Prosthesis Design* Dental Restoration Failure* Dentin / anatomy & histology Female Follow-Up Studies Guidelines as Topic Humans Life Tables Male Metal Ceramic Alloys Middle Aged Post and Core Technique* Prospective Studies Statistics, Nonparametric Survival Analysis Tooth Preparation, Prosthodontic* |
| Chemical | |
Reg. No./Substance:
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0/Composite Resins; 0/Metal Ceramic Alloys |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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