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Article: Evaluation of fibre post-supported restorations under simulated occlusal loading

TitleEvaluation of fibre post-supported restorations under simulated occlusal loading
Authors
Issue Date2012
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdent
Citation
Journal of Prosthetic Dentistry, 2012, v. 108 n. 3, p. 158-164 How to Cite?
AbstractSTATEMENT OF PROBLEM: There is a lack of information comparing the effect of a rigid versus flexible post on the marginal seal of post-and-core supported crowns subjected to long-term repeated loading. PURPOSE: The purpose of this study was to examine the leakage pattern of complete coverage restorations retained with either a metal or fiber-reinforced resin post under simulated occlusal loads. MATERIAL AND METHODS: Thirty-six maxillary central incisors were endodontically treated and provided with a post-and-core supported crown. One group was restored with a fiber-post (EasyPost Lux) and another was restored with a metal post (Parapost) (n=12). Both groups were loaded for 120,000 cycles to 70 N while immersed in a dye solution. A control group (n=12), similarly restored with a fiber post but not loaded, was also included. All teeth were transversely sectioned serially from the tooth-core interface towards the apex. Digital photographs were made to determine the extent of leakage on the buccal, mesial, palatal, and distal aspects along the depth of the post. A nonparametric Kruskal-Wallis test was used to determine any difference between groups (alpha=.05). RESULTS: Dye penetration occurred in all stress-cycled specimens and was more extensive on the palatal than other aspects. The fiber-post group cyclically stressed to 70 N showed a significantly greater amount of leakage than the control or the Parapost group (P<.05). CONCLUSIONS: In in vitro testing, the rigidity of the post influenced the seal of post-and-core-supported crowns at the palatal margin.
Persistent Identifierhttp://hdl.handle.net/10722/169161
ISSN
2014 Impact Factor: 1.753
2015 SCImago Journal Rankings: 0.507

 

DC FieldValueLanguage
dc.contributor.authorChang, JWWen_US
dc.contributor.authorSoo, Ien_US
dc.contributor.authorCheung, GSP-
dc.date.accessioned2012-10-18T08:44:53Z-
dc.date.available2012-10-18T08:44:53Z-
dc.date.issued2012en_US
dc.identifier.citationJournal of Prosthetic Dentistry, 2012, v. 108 n. 3, p. 158-164en_US
dc.identifier.issn0022-3913-
dc.identifier.urihttp://hdl.handle.net/10722/169161-
dc.description.abstractSTATEMENT OF PROBLEM: There is a lack of information comparing the effect of a rigid versus flexible post on the marginal seal of post-and-core supported crowns subjected to long-term repeated loading. PURPOSE: The purpose of this study was to examine the leakage pattern of complete coverage restorations retained with either a metal or fiber-reinforced resin post under simulated occlusal loads. MATERIAL AND METHODS: Thirty-six maxillary central incisors were endodontically treated and provided with a post-and-core supported crown. One group was restored with a fiber-post (EasyPost Lux) and another was restored with a metal post (Parapost) (n=12). Both groups were loaded for 120,000 cycles to 70 N while immersed in a dye solution. A control group (n=12), similarly restored with a fiber post but not loaded, was also included. All teeth were transversely sectioned serially from the tooth-core interface towards the apex. Digital photographs were made to determine the extent of leakage on the buccal, mesial, palatal, and distal aspects along the depth of the post. A nonparametric Kruskal-Wallis test was used to determine any difference between groups (alpha=.05). RESULTS: Dye penetration occurred in all stress-cycled specimens and was more extensive on the palatal than other aspects. The fiber-post group cyclically stressed to 70 N showed a significantly greater amount of leakage than the control or the Parapost group (P<.05). CONCLUSIONS: In in vitro testing, the rigidity of the post influenced the seal of post-and-core-supported crowns at the palatal margin.-
dc.languageengen_US
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdent-
dc.relation.ispartofJournal of Prosthetic Dentistryen_US
dc.titleEvaluation of fibre post-supported restorations under simulated occlusal loadingen_US
dc.typeArticleen_US
dc.identifier.emailChang, JWW: changww@hku.hken_US
dc.identifier.authorityChang, JWW=rp00046en_US
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0022-3913(12)60140-1-
dc.identifier.pmid22944311-
dc.identifier.scopuseid_2-s2.0-84865779729-
dc.identifier.hkuros211623en_US
dc.identifier.volume108en_US
dc.identifier.issue3en_US
dc.identifier.spage158en_US
dc.identifier.epage164en_US
dc.identifier.eissn1097-6841-
dc.publisher.placeUnited States-

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