| Rigid versus Flexible Dentine-like Endodontic Posts-Clinical Testing of a Biomechanical Concept: Seven-year Results of a Randomized Controlled Clinical Pilot Trial on Endodontically Treated Abutment Teeth with Severe Hard Tissue Loss. | |
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MedLine Citation:
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PMID: 23146637 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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INTRODUCTION: This is the first clinical long-term pilot study that tested the biomimetic concept of using more flexible, dentine-like (low Young modulus) glass fiber-reinforced epoxy resin posts (GFREPs) compared with rather rigid, stiff (higher Young modulus) titanium posts (TPs) in order to improve the survival rate of severely damaged endodontically treated teeth. METHODS: Ninety-one subjects in need of postendodontic restorations in teeth with 2 or less remaining cavity walls were randomly assigned to receive either a tapered TP (n = 46) or a tapered GFREP (n = 45). The posts were adhesively luted using self-adhesive resin cement. The composite core build-ups were prepared ensuring a circumferential 2-mm ferrule. The primary endpoint was a loss of restoration for any reason. To study group differences, the log-rank test was calculated (P < .05). Hazard plots were constructed. RESULTS: After 84 months of observation (mean = 71.2 months), 7 restorations failed (ie, 4 GFREPs and 3 TPs). The failure modes were as follows: GFREP:root fracture (n = 3), core fracture (n = 1) and TP:endodontic failure (n = 3). No statistical difference was found between the survival rates (GFREPs = 90.2%, TPs = 93.5%, P = .642). The probability of no failure was comparable for both post materials (risk ratio; 95% confidence interval, 0.965-0.851/1.095). CONCLUSIONS: When using self-adhesive luted prefabricated posts in severely destroyed abutment teeth with 2 or less cavity walls and a 2-mm ferrule, postendodontic restorations achieved high long-term survival rates irrespective of the post material used (ie, glass fiber vs titanium). |
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Authors:
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Guido Sterzenbach; Alexandra Franke; Michael Naumann |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of endodontics Volume: 38 ISSN: 1878-3554 ISO Abbreviation: J Endod Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-11-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7511484 Medline TA: J Endod Country: United States |
Other Details:
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Languages: eng Pagination: 1557-63 Citation Subset: D |
Copyright Information:
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Copyright © 2012 American Association of Endodontists. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité-Universitätsmedizin Berlin, Berlin, Germany. Electronic address: guido.sterzenbach@charite.de. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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