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Article: Linear dimensional change of heat-cured acrylic resin complete dentures after reline and rebase.

TitleLinear dimensional change of heat-cured acrylic resin complete dentures after reline and rebase.
Authors
Issue Date1998
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdent
Citation
The Journal Of Prosthetic Dentistry, 1998, v. 80 n. 2, p. 238-245 How to Cite?
AbstractSTATEMENT OF PROBLEM: Relining and rebasing of complete dentures are common procedures to improve the fit of the prostheses. After relining or rebasing, adjustments may be required because of dimensional change that occurs during reprocessing of the denture when new denture base material is polymerized. PURPOSE: This study analyzed the linear dimensional change of heat cured acrylic resin that occurs during reline and rebase procedures for complete dentures. MATERIAL AND METHODS: Twenty-two maxillary and mandibular complete denture bases with artificial teeth were saturated by immersion in distilled water at 37 degrees C +/- 1 degree C. Fine crosses were marked on the incisal edges of the central incisors and the supporting cusps of the second molar teeth. Distances between the marks were measured with a high resolution traveling microscope. Heat-cured acrylic resin was processed by a long curing cycle of 72 degrees C for 6.5 hours, then heated to 100 degrees C for over 30 minutes and kept at 100 degrees C for 1 hour. The relined or rebased denture was allowed to cool slowly in the water bath for 48 hours to reach ambient temperature. The reference-crosses were measured immediately after careful deflasking. RESULTS: In the relining procedure, all incisor-molar and intermolar distances exhibited shrinkage of 0.3%, despite different shapes of maxillary and mandibular dentures. Results of the rebasing procedure were similar to that of the reline expect that only 0.1% intermolar shrinkage was found on the maxillary denture. CONCLUSION: Shrinkage was approximately 0.15 mm for an interarch distance of 50 mm. This degree of change is both clinically undetectable and insignificant. Using this processing cycle for acrylic resin in reline or rebase procedures did not cause clinically significant dimensional changes to complete dentures.
Persistent Identifierhttp://hdl.handle.net/10722/154031
ISSN
2014 Impact Factor: 1.753
2015 SCImago Journal Rankings: 0.507
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPow, EHen_US
dc.contributor.authorChow, TWen_US
dc.contributor.authorClark, RKen_US
dc.date.accessioned2012-08-08T08:22:54Z-
dc.date.available2012-08-08T08:22:54Z-
dc.date.issued1998en_US
dc.identifier.citationThe Journal Of Prosthetic Dentistry, 1998, v. 80 n. 2, p. 238-245en_US
dc.identifier.issn0022-3913en_US
dc.identifier.urihttp://hdl.handle.net/10722/154031-
dc.description.abstractSTATEMENT OF PROBLEM: Relining and rebasing of complete dentures are common procedures to improve the fit of the prostheses. After relining or rebasing, adjustments may be required because of dimensional change that occurs during reprocessing of the denture when new denture base material is polymerized. PURPOSE: This study analyzed the linear dimensional change of heat cured acrylic resin that occurs during reline and rebase procedures for complete dentures. MATERIAL AND METHODS: Twenty-two maxillary and mandibular complete denture bases with artificial teeth were saturated by immersion in distilled water at 37 degrees C +/- 1 degree C. Fine crosses were marked on the incisal edges of the central incisors and the supporting cusps of the second molar teeth. Distances between the marks were measured with a high resolution traveling microscope. Heat-cured acrylic resin was processed by a long curing cycle of 72 degrees C for 6.5 hours, then heated to 100 degrees C for over 30 minutes and kept at 100 degrees C for 1 hour. The relined or rebased denture was allowed to cool slowly in the water bath for 48 hours to reach ambient temperature. The reference-crosses were measured immediately after careful deflasking. RESULTS: In the relining procedure, all incisor-molar and intermolar distances exhibited shrinkage of 0.3%, despite different shapes of maxillary and mandibular dentures. Results of the rebasing procedure were similar to that of the reline expect that only 0.1% intermolar shrinkage was found on the maxillary denture. CONCLUSION: Shrinkage was approximately 0.15 mm for an interarch distance of 50 mm. This degree of change is both clinically undetectable and insignificant. Using this processing cycle for acrylic resin in reline or rebase procedures did not cause clinically significant dimensional changes to complete dentures.en_US
dc.languageengen_US
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdenten_US
dc.relation.ispartofThe Journal of prosthetic dentistryen_US
dc.rightsJournal of Prosthetic Dentistry. Copyright © Mosby, Inc.-
dc.subject.meshAcrylic Resins - Chemistryen_US
dc.subject.meshAnalysis Of Varianceen_US
dc.subject.meshChemistry, Physicalen_US
dc.subject.meshDental Archen_US
dc.subject.meshDenture Basesen_US
dc.subject.meshDenture Rebasingen_US
dc.subject.meshDenture, Completeen_US
dc.subject.meshDenture, Complete, Loweren_US
dc.subject.meshDenture, Complete, Upperen_US
dc.subject.meshHot Temperatureen_US
dc.subject.meshHumansen_US
dc.subject.meshIncisoren_US
dc.subject.meshMolaren_US
dc.subject.meshMultivariate Analysisen_US
dc.subject.meshPhysicochemical Phenomenaen_US
dc.subject.meshPolymers - Chemistryen_US
dc.subject.meshSurface Propertiesen_US
dc.subject.meshTooth, Artificialen_US
dc.subject.meshWateren_US
dc.titleLinear dimensional change of heat-cured acrylic resin complete dentures after reline and rebase.en_US
dc.typeArticleen_US
dc.identifier.emailPow, EH:ehnpow@hku.hken_US
dc.identifier.emailChow, TW:twchow@hku.hken_US
dc.identifier.authorityPow, EH=rp00030en_US
dc.identifier.authorityChow, TW=rp00009en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid9710829-
dc.identifier.scopuseid_2-s2.0-0032138211en_US
dc.identifier.hkuros45791-
dc.identifier.volume80en_US
dc.identifier.issue2en_US
dc.identifier.spage238en_US
dc.identifier.epage245en_US
dc.identifier.isiWOS:000075344800017-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridPow, EH=6603825799en_US
dc.identifier.scopusauthoridChow, TW=7203012369en_US
dc.identifier.scopusauthoridClark, RK=7406318698en_US

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