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Article: Color stability of provisional prosthodontic materials

TitleColor stability of provisional prosthodontic materials
Authors
Issue Date2004
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdent
Citation
Journal Of Prosthetic Dentistry, 2004, v. 91 n. 5, p. 447-452 How to Cite?
AbstractStatement of problem Discoloration of provisional prosthodontic materials may result in patient dissatisfaction and additional expense for replacement. Purpose The purpose of this study was to determine the color stability of 5 provisional prosthodontic materials before and after immersion in distilled water or coffee for 20 days or exposure to ultraviolet (UV) light for 24 hours. Material and methods A total of 105 disc-shaped specimens (20±0.1 mm by 1±0.05 mm) were fabricated with 5 provisional prosthodontic materials: polyethyl methacrylate resins (Trim II), polymethyl methacrylate resins (Duralay; Alike), and bis-acryl methacrylate resin (Luxatemp; Integrity), according to manufacturers' instructions (n=21). Seven specimens of each material were randomly selected and immersed individually in distilled water (60°C) or coffee (37°C) for 20 days or exposed to UV irradiation for 24 hours, respectively. Color was measured as CIE L*a *b* with a colorimeter before and after the immersion or UV exposure. Color change (ΔE) was calculated and data were analyzed with 1-way ANOVA and the Tukey multiple comparisons test (α=.05). Results For specimens immersed in water, the color change of bis-acryl-methacrylate-based provisional materials (Integrity and Luxatemp) was significantly less than that of 3 methyl/ethyl methacrylate-based provisional materials (Trim II, Alike, and Duralay) (P<.002). After immersion in coffee, the 3 methyl/ethyl methacrylate-based provisional materials exhibited significantly less color change compared to the 2 bis-acryl methacrylate-based provisional materials (P<.0001). After ultraviolet irradiation, 2 bis-acryl methacrylate-based provisional materials showed significantly less color change than any of the 3 methyl/ethyl methacrylate-based provisional materials (P<.0001). Conclusion Luxatemp and Integrity (bis-acryl-methacrylate-based resins) demonstrated acceptable color stability and were the most color-stable provisional prosthodontic materials tested compared to the methyl/ethyl methacrylate-based resins.
Persistent Identifierhttp://hdl.handle.net/10722/65975
ISSN
2014 Impact Factor: 1.753
2015 SCImago Journal Rankings: 0.507
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSham, ASKen_HK
dc.contributor.authorChu, FCSen_HK
dc.contributor.authorChai, Jen_HK
dc.contributor.authorChow, TWen_HK
dc.date.accessioned2010-09-06T05:42:33Z-
dc.date.available2010-09-06T05:42:33Z-
dc.date.issued2004en_HK
dc.identifier.citationJournal Of Prosthetic Dentistry, 2004, v. 91 n. 5, p. 447-452en_HK
dc.identifier.issn0022-3913en_HK
dc.identifier.urihttp://hdl.handle.net/10722/65975-
dc.description.abstractStatement of problem Discoloration of provisional prosthodontic materials may result in patient dissatisfaction and additional expense for replacement. Purpose The purpose of this study was to determine the color stability of 5 provisional prosthodontic materials before and after immersion in distilled water or coffee for 20 days or exposure to ultraviolet (UV) light for 24 hours. Material and methods A total of 105 disc-shaped specimens (20±0.1 mm by 1±0.05 mm) were fabricated with 5 provisional prosthodontic materials: polyethyl methacrylate resins (Trim II), polymethyl methacrylate resins (Duralay; Alike), and bis-acryl methacrylate resin (Luxatemp; Integrity), according to manufacturers' instructions (n=21). Seven specimens of each material were randomly selected and immersed individually in distilled water (60°C) or coffee (37°C) for 20 days or exposed to UV irradiation for 24 hours, respectively. Color was measured as CIE L*a *b* with a colorimeter before and after the immersion or UV exposure. Color change (ΔE) was calculated and data were analyzed with 1-way ANOVA and the Tukey multiple comparisons test (α=.05). Results For specimens immersed in water, the color change of bis-acryl-methacrylate-based provisional materials (Integrity and Luxatemp) was significantly less than that of 3 methyl/ethyl methacrylate-based provisional materials (Trim II, Alike, and Duralay) (P<.002). After immersion in coffee, the 3 methyl/ethyl methacrylate-based provisional materials exhibited significantly less color change compared to the 2 bis-acryl methacrylate-based provisional materials (P<.0001). After ultraviolet irradiation, 2 bis-acryl methacrylate-based provisional materials showed significantly less color change than any of the 3 methyl/ethyl methacrylate-based provisional materials (P<.0001). Conclusion Luxatemp and Integrity (bis-acryl-methacrylate-based resins) demonstrated acceptable color stability and were the most color-stable provisional prosthodontic materials tested compared to the methyl/ethyl methacrylate-based resins.en_HK
dc.languageengen_HK
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdenten_HK
dc.relation.ispartofJournal of Prosthetic Dentistryen_HK
dc.rightsJournal of Prosthetic Dentistry. Copyright © Mosby, Inc.en_HK
dc.subject.meshAnalysis of Varianceen_HK
dc.subject.meshBisphenol A-Glycidyl Methacrylate - chemistryen_HK
dc.subject.meshCoffee - chemistryen_HK
dc.subject.meshColorimetry - instrumentationen_HK
dc.subject.meshDental Materials - chemistry - radiation effectsen_HK
dc.subject.meshDental Prosthesisen_HK
dc.subject.meshHumansen_HK
dc.subject.meshImmersionen_HK
dc.subject.meshMaterials Testingen_HK
dc.subject.meshMethylmethacrylates - chemistryen_HK
dc.subject.meshPolymethacrylic Acids - chemistryen_HK
dc.subject.meshProsthesis Coloringen_HK
dc.subject.meshTime Factorsen_HK
dc.subject.meshUltraviolet Raysen_HK
dc.subject.meshWater - chemistryen_HK
dc.titleColor stability of provisional prosthodontic materialsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-3913&volume=91&spage=447&epage=452&date=2004&atitle=Color+stability+of+provisional+prosthodontic+materialsen_HK
dc.identifier.emailChu, FCS: cschu@hkucc.hku.hken_HK
dc.identifier.emailChow, TW: twchow@hku.hken_HK
dc.identifier.authorityChu, FCS=rp00035en_HK
dc.identifier.authorityChow, TW=rp00009en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.prosdent.2004.03.005en_HK
dc.identifier.pmid15153852-
dc.identifier.scopuseid_2-s2.0-2442498461en_HK
dc.identifier.hkuros90182en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-2442498461&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume91en_HK
dc.identifier.issue5en_HK
dc.identifier.spage447en_HK
dc.identifier.epage452en_HK
dc.identifier.isiWOS:000221531500009-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridSham, ASK=35887294400en_HK
dc.identifier.scopusauthoridChu, FCS=7201881096en_HK
dc.identifier.scopusauthoridChai, J=7202678911en_HK
dc.identifier.scopusauthoridChow, TW=7203012369en_HK

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