Effect of exposure time on the color stability of resin-based restorative materials when polymerized with quartz–tungsten halogen and LED light

The objective of this study was to investigate the effect of exposure time on color stability of resin-based restorative materials when polymerized with quartz–tungsten halogen light (QTH) or light-emitting diode light (LED). Eight samples of Ceram-X Mono, Dyract eXtra, and Tetric EvoCeram each were...

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Bibliographic Details
Published in:Clinical oral investigations 2010-10, Vol.14 (5), p.599-605
Main Authors: Rüttermann, Stefan, Suyoun, Kim, Raab, Wolfgang H.-M., Janda, Ralf
Format: Article
Language:English
Subjects:
Chemistry, Pharmaceutical
Color
Compomers - chemistry
Composite Resins - chemistry
Composite Resins - radiation effects
Curing Lights, Dental - classification
Dental Materials - chemistry
Dental Materials - radiation effects
Dentistry
Humans
Materials Testing
Medicine
Original Article
Polymerization - radiation effects
Surface Properties
Temperature
Time Factors
Ultraviolet Rays
Water - chemistry
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Summary:The objective of this study was to investigate the effect of exposure time on color stability of resin-based restorative materials when polymerized with quartz–tungsten halogen light (QTH) or light-emitting diode light (LED). Eight samples of Ceram-X Mono, Dyract eXtra, and Tetric EvoCeram each were cured for 10, 20, and 60 s with QTH or LED. The CIE-Lab values ( L *, a *, b *) were measured prior to and after performing water storage or a Suntest, and Δ L , Δ a , Δ b , and Δ E were calculated. Statistical analysis ( p  
ISSN:1432-6981
1436-3771
DOI:10.1007/s00784-009-0316-y