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Color and Luminescence stability of selected dental materials in vitro

2012-02Journal article Restricted access
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dc.contributor.authorGawriolek, Maria
dc.contributor.authorSikorska, Ewa
dc.contributor.authorFerreira, Luís F. V.
dc.contributor.authorCosta, Alexandre I.
dc.contributor.authorKhmelinskii, Igor
dc.contributor.authorSikorski, Marek
dc.contributor.authorKoczorowski, Ryszord
dc.contributor.authorKrawczyk, Alina
dc.date.accessioned2015-09-08T14:01:32Z
dc.date.available2015-09-08T14:01:32Z
dc.date.issued2012-02
dc.description.abstractTo study luminescence, reflectance, and color stability of dental composites and ceramics. Materials and Methods: IPS e.max, IPS Classic, Gradia, and Sinfony materials were tested, both unpolished (as-cast) and polished specimens. Coffee, tea, red wine, and distilled water (control) were used as staining drinks. Disk-shaped specimens were soaked in the staining drinks for up to 5 days. Color was measured by a colorimeter. Fluorescence was recorded using a spectrofluorometer, in the front-face geometry. Time-resolved fluorescence spectra were recorded using a laser nanosecond spectrofluorometer. Results: The exposure of the examined dental materials to staining drinks caused changes in color of the composites and ceramics, with the polished specimens exhibiting significantly lower color changes as compared to unpolished specimens. Composites exhibited lower color stability as compared to ceramic materials. Water also caused perceptible color changes in most materials. The materials tested demonstrated significantly different initial luminescence intensities. Upon exposure to staining drinks, luminescence became weaker by up to 40%, dependent on the drink and the material. Time-resolved luminescence spectra exhibited some red shift of the emission band at longer times, with the lifetimes in the range of tens of nanoseconds. Conclusions: Unpolished specimens with a more developed surface have lower color stability. Specimens stored in water develop some changes in their visual appearance. The presently proposed methods are effective in evaluating the luminescence of dental materials. Luminescence needs to be tested in addition to color, as the two characteristics are uncorrelated. It is important to further improve the color and luminescence stability of dental materials.por
dc.identifier.citationGAWRIOLEK, M.; [et al] – Color and Luminescence stability of selected dental materials in vitro. Journal of Prosthodontics. ISSN: 1059941X. Vol. 21, nr. 2 (2012), pp. 112-122por
dc.identifier.doi10.1111/j.1532-849X.2011.00808.x
dc.identifier.issn1059941X
dc.identifier.urihttp://hdl.handle.net/10400.21/5098
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherAmerican College of Prosthodontistspor
dc.subjectColor and Luminescencepor
dc.subjectColor Difference Valuespor
dc.subjectColor Parameterspor
dc.subjectDental Compositespor
dc.subjectLaser-Induced Luminescencepor
dc.subjectStabilitypor
dc.subjectStaining Drinkspor
dc.subjectTotal Luminescence Matricespor
dc.subjectColor Difference Values
dc.subjectResin Composites
dc.subjectFluorescent Emission
dc.subjectBenzil Inclusion
dc.subjectDifferent Drinks
dc.subjectTooth
dc.subjectPorcelain
dc.subjectColorimeter
dc.subjectEnamel
dc.subjectShades
dc.subjectLight
dc.titleColor and Luminescence stability of selected dental materials in vitropor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceMalden
oaire.citation.endPage122por
oaire.citation.issue2por
oaire.citation.startPage112por
oaire.citation.titleJournal of Prosthodonticspor
oaire.citation.volume21por
rcaap.rightsclosedAccesspor
rcaap.typearticlepor

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