TY  - JOUR
AU  - Antonov, Milica
AU  - Lenhardt, Lea I.
AU  - Manojlović, Dragica
AU  - Milićević, Bojana R.
AU  - Dramićanin, Miroslav
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0042-84501600394A
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7927
AB  - Background/Aim. Discoloration of dental restorations makes them aesthetically unacceptable and is a frequent reason for replacement of composite restorations. The aim of this study was to evaluate changes of color and fluorescence of resin-based composites (RBCs) exposed to natural juices and energy drinks. Methods. Microhybrid composite Gradia Direct™ Extra Bleach White disc-shaped specimens (n = 35) were immersed in three different natural juices and four different energy drinks. Absorption spectra of natural juices and energy drinks, diffuse reflection and fluorescence of composite samples were measured prior and after seven-day immersion by spectrophotometer Thermo Evolution 600 and spectrofluorometer Fluorolog-3-221. Composite’s color was calculated from diffuse reflection spectra and expressed in CIELAB color space (Commission International de l’Eclairage). Results. All natural juices and energy drinks induced color change of resin based composites, but to the different extent. Only aronia and carrot juices induced total color change considerably higher than clinically acceptable threshold, 9.3 and 6.2, respectively. All energy drinks and aronia juice induced notable decrease in fluorescence; the highest change of 28% was evidenced in the case of aronia juice. Conclusion. Change of color and fluorescence will appear differently with various solutions due to different chemical composition and concentration of colorant species in different beverages. Solutions with higher optical absorption induced higher total color change. Discoloration of composites in aronia and carrot juices is similar to those earlier reported for red wine, tea and coffee.
T2  - Vojnosanitetski pregled
T1  - Discoloration of resin based composites in natural juices and energy drinks
T1  - Prebojavanje kompozita prirodnim sokovima i energetskim pićima
VL  - 75
IS  - 8
SP  - 787
EP  - 794
DO  - 10.2298/VSP161018394A
ER  - 

@article{
author = "Antonov, Milica and Lenhardt, Lea I. and Manojlović, Dragica and Milićević, Bojana R. and Dramićanin, Miroslav",
year = "2018",
abstract = "Background/Aim. Discoloration of dental restorations makes them aesthetically unacceptable and is a frequent reason for replacement of composite restorations. The aim of this study was to evaluate changes of color and fluorescence of resin-based composites (RBCs) exposed to natural juices and energy drinks. Methods. Microhybrid composite Gradia Direct™ Extra Bleach White disc-shaped specimens (n = 35) were immersed in three different natural juices and four different energy drinks. Absorption spectra of natural juices and energy drinks, diffuse reflection and fluorescence of composite samples were measured prior and after seven-day immersion by spectrophotometer Thermo Evolution 600 and spectrofluorometer Fluorolog-3-221. Composite’s color was calculated from diffuse reflection spectra and expressed in CIELAB color space (Commission International de l’Eclairage). Results. All natural juices and energy drinks induced color change of resin based composites, but to the different extent. Only aronia and carrot juices induced total color change considerably higher than clinically acceptable threshold, 9.3 and 6.2, respectively. All energy drinks and aronia juice induced notable decrease in fluorescence; the highest change of 28% was evidenced in the case of aronia juice. Conclusion. Change of color and fluorescence will appear differently with various solutions due to different chemical composition and concentration of colorant species in different beverages. Solutions with higher optical absorption induced higher total color change. Discoloration of composites in aronia and carrot juices is similar to those earlier reported for red wine, tea and coffee.",
journal = "Vojnosanitetski pregled",
title = "Discoloration of resin based composites in natural juices and energy drinks, Prebojavanje kompozita prirodnim sokovima i energetskim pićima",
volume = "75",
number = "8",
pages = "787-794",
doi = "10.2298/VSP161018394A"
}

Antonov, M., Lenhardt, L. I., Manojlović, D., Milićević, B. R.,& Dramićanin, M.. (2018). Discoloration of resin based composites in natural juices and energy drinks. in Vojnosanitetski pregled, 75(8), 787-794.
https://doi.org/10.2298/VSP161018394A

Antonov M, Lenhardt LI, Manojlović D, Milićević BR, Dramićanin M. Discoloration of resin based composites in natural juices and energy drinks. in Vojnosanitetski pregled. 2018;75(8):787-794.
doi:10.2298/VSP161018394A .

Antonov, Milica, Lenhardt, Lea I., Manojlović, Dragica, Milićević, Bojana R., Dramićanin, Miroslav, "Discoloration of resin based composites in natural juices and energy drinks" in Vojnosanitetski pregled, 75, no. 8 (2018):787-794,
https://doi.org/10.2298/VSP161018394A . .

TY  - JOUR
AU  - Antonov, Milica
AU  - Lenhardt, Lea I.
AU  - Manojlović, Dragica
AU  - Milićević, Bojana R.
AU  - Zeković, Ivana Lj.
AU  - Dramićanin, Miroslav
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1281
AB  - ObjectiveThe aim of this study was to evaluate changes of color and fluorescence of resin based composite exposed to beer. Materials and Methods84 samples (13 mm in diameter and 1.5 mm thick) of microhybrid composite Gradia Direct(TM) extra bleach white were immersed in 5 different beers (dark and light) or distilled water. Color and fluorescence were measured prior and after 1-, 7-, and 14-day immersion by Spectrophotometer Thermo Evolution 600 and Fluorolog-3-221 spectrofluorometer. ResultsResin based composites changed color after immersion in beers of different types. Beers with higher optical absorption induced greater color changes. The fluorescence intensity of composites was decreased after immersion in beer, but the shape of fluorescence spectra was not changed. 14-day immersion in Bernard dark beer caused the greatest changes in optical properties of composite: E*=9.0 and 57.6% reduced fluorescence. ConclusionDark and light beers changed optical properties of resin based composite. The color change come exclusively from the change of chroma. Clinical SignificanceTo fully meet esthetic criteria when using dental materials in restoration it is crucial to match optical properties of teeth and dental restoration at the moment of placement, but also to keep the match over the time. Considering that staining in beer causes changes in color and fluorescence of composites and that discoloration is a frequent reason for replacement of composite restorations, the data and conclusions on discoloration of dental restorations caused by beer consumption should aid dental professionals when reaching for high esthetics of modern dentistry.(J Esthet Restor Dent 28:330-338, 2016)
T2  - Journal of Esthetic and Restorative Dentistry
T1  - Changes of Color and Fluorescence of Resin Composites Immersed in Beer
VL  - 28
IS  - 5
SP  - 330
EP  - 338
DO  - 10.1111/jerd.12232
ER  - 

@article{
author = "Antonov, Milica and Lenhardt, Lea I. and Manojlović, Dragica and Milićević, Bojana R. and Zeković, Ivana Lj. and Dramićanin, Miroslav",
year = "2016",
abstract = "ObjectiveThe aim of this study was to evaluate changes of color and fluorescence of resin based composite exposed to beer. Materials and Methods84 samples (13 mm in diameter and 1.5 mm thick) of microhybrid composite Gradia Direct(TM) extra bleach white were immersed in 5 different beers (dark and light) or distilled water. Color and fluorescence were measured prior and after 1-, 7-, and 14-day immersion by Spectrophotometer Thermo Evolution 600 and Fluorolog-3-221 spectrofluorometer. ResultsResin based composites changed color after immersion in beers of different types. Beers with higher optical absorption induced greater color changes. The fluorescence intensity of composites was decreased after immersion in beer, but the shape of fluorescence spectra was not changed. 14-day immersion in Bernard dark beer caused the greatest changes in optical properties of composite: E*=9.0 and 57.6% reduced fluorescence. ConclusionDark and light beers changed optical properties of resin based composite. The color change come exclusively from the change of chroma. Clinical SignificanceTo fully meet esthetic criteria when using dental materials in restoration it is crucial to match optical properties of teeth and dental restoration at the moment of placement, but also to keep the match over the time. Considering that staining in beer causes changes in color and fluorescence of composites and that discoloration is a frequent reason for replacement of composite restorations, the data and conclusions on discoloration of dental restorations caused by beer consumption should aid dental professionals when reaching for high esthetics of modern dentistry.(J Esthet Restor Dent 28:330-338, 2016)",
journal = "Journal of Esthetic and Restorative Dentistry",
title = "Changes of Color and Fluorescence of Resin Composites Immersed in Beer",
volume = "28",
number = "5",
pages = "330-338",
doi = "10.1111/jerd.12232"
}

Antonov, M., Lenhardt, L. I., Manojlović, D., Milićević, B. R., Zeković, I. Lj.,& Dramićanin, M.. (2016). Changes of Color and Fluorescence of Resin Composites Immersed in Beer. in Journal of Esthetic and Restorative Dentistry, 28(5), 330-338.
https://doi.org/10.1111/jerd.12232

Antonov M, Lenhardt LI, Manojlović D, Milićević BR, Zeković IL, Dramićanin M. Changes of Color and Fluorescence of Resin Composites Immersed in Beer. in Journal of Esthetic and Restorative Dentistry. 2016;28(5):330-338.
doi:10.1111/jerd.12232 .

Antonov, Milica, Lenhardt, Lea I., Manojlović, Dragica, Milićević, Bojana R., Zeković, Ivana Lj., Dramićanin, Miroslav, "Changes of Color and Fluorescence of Resin Composites Immersed in Beer" in Journal of Esthetic and Restorative Dentistry, 28, no. 5 (2016):330-338,
https://doi.org/10.1111/jerd.12232 . .

TY  - JOUR
AU  - Manojlović, Dragan D.
AU  - Lenhardt, Lea I.
AU  - Milićević, Bojana R.
AU  - Antonov, Milica
AU  - Miletic, V.
AU  - Dramićanin, Miroslav
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/763
AB  - Colour changes in Gradia Direct (TM) composite after immersion in tea, coffee, red wine, Coca-Cola, Colgate mouthwash, and distilled water were evaluated using principal component analysis (PCA) and the CIELAB colour coordinates. The reflection spectra of the composites were used as input data for the PCA. The output data (scores and loadings) provided information about the magnitude and origin of the surface reflection changes after exposure to the staining solutions. The reflection spectra of the stained samples generally exhibited lower reflection in the blue spectral range, which was manifested in the lower content of the blue shade for the samples. Both analyses demonstrated the high staining abilities of tea, coffee, and red wine, which produced total colour changes of 4.31, 6.61, and 6.22, respectively, according to the CIELAB analysis. PCA revealed subtle changes in the reflection spectra of composites immersed in Coca-Cola, demonstrating Coca-Colas ability to stain the composite to a small degree.
T2  - Scientific Reports
T1  - Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis
VL  - 5
DO  - 10.1038/srep14638
ER  - 

@article{
author = "Manojlović, Dragan D. and Lenhardt, Lea I. and Milićević, Bojana R. and Antonov, Milica and Miletic, V. and Dramićanin, Miroslav",
year = "2015",
abstract = "Colour changes in Gradia Direct (TM) composite after immersion in tea, coffee, red wine, Coca-Cola, Colgate mouthwash, and distilled water were evaluated using principal component analysis (PCA) and the CIELAB colour coordinates. The reflection spectra of the composites were used as input data for the PCA. The output data (scores and loadings) provided information about the magnitude and origin of the surface reflection changes after exposure to the staining solutions. The reflection spectra of the stained samples generally exhibited lower reflection in the blue spectral range, which was manifested in the lower content of the blue shade for the samples. Both analyses demonstrated the high staining abilities of tea, coffee, and red wine, which produced total colour changes of 4.31, 6.61, and 6.22, respectively, according to the CIELAB analysis. PCA revealed subtle changes in the reflection spectra of composites immersed in Coca-Cola, demonstrating Coca-Colas ability to stain the composite to a small degree.",
journal = "Scientific Reports",
title = "Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis",
volume = "5",
doi = "10.1038/srep14638"
}

Manojlović, D. D., Lenhardt, L. I., Milićević, B. R., Antonov, M., Miletic, V.,& Dramićanin, M.. (2015). Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis. in Scientific Reports, 5.
https://doi.org/10.1038/srep14638

Manojlović DD, Lenhardt LI, Milićević BR, Antonov M, Miletic V, Dramićanin M. Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis. in Scientific Reports. 2015;5.
doi:10.1038/srep14638 .

Manojlović, Dragan D., Lenhardt, Lea I., Milićević, Bojana R., Antonov, Milica, Miletic, V., Dramićanin, Miroslav, "Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis" in Scientific Reports, 5 (2015),
https://doi.org/10.1038/srep14638 . .