Luminescence of selected dental composites in vitro.
OBJECTIVE
The work was motivated by the necessity to evaluate the emission changes of dental composites, as the emission under UV light is one of the important optical parameters of the hard tooth tissue.


METHODS
Fulfill extra, Artemis and Durafill VS materials in A3.5 shade were tested. Coffee, tea, red wine and distilled water (blank) were used as staining drinks. The samples were soaked for 7 days. Total luminescence matrices were collected with an interval of 1 nm in emission and 10nm in excitation, in the front-face geometry.


RESULTS
The exposure of dental composites to staining drinks caused a reduction in luminescence intensity by up to 40%, the magnitude of the reduction depending on the drink and on the composite material. In the special case of the intrinsically weak fluorescent Durafill VS, the exposure to coffee apparently caused an increase in luminescence intensity due to coffee components adsorbed on the sample surface.


CONCLUSIONS
It is important to improve the emission stability of dental composites. The presently proposed methods are effective in evaluating the emission of dental composites. Emission needs to be tested in addition to color, as the two parameters are uncorrelated.
Mazur-Koczorowska
Anna
A
Medical Faculty II, Poznań University of Medical Sciences, Bukowska 70, 60-812 Poznań, Poland.
Sikorska
Ewa
E
Krawczyk
Alina
A
Khmelinskii
Igor
I
Sikorski
Marek
M
Koczorowski
Ryszard
R
Stopa
Janina
J
D000327:Adsorption; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003069:Coffee; D003116:Color; D003124:Colorimetry; D003188:Composite Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D006801:Humans; D049449:Luminescence; D008422:Materials Testing; D011140:Polyurethanes / Q000737:chemistry; D013057:Spectrum Analysis; D013662:Tea; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry; D014920:Wine
D003069:Coffee; D003188:Composite Resins; D003764:Dental Materials; D011140:Polyurethanes; D013662:Tea; C515215:artemis composite resin; D014867:Water; D017438:Bisphenol A-Glycidyl Methacrylate; C039734:Durafill; C046503:formula F 70