Color stability of provisional restorative materials after accelerated aging

2001 ◽  
Vol 10 (4) ◽  
pp. 212-216
Author(s):  
Pamela G. Doray ◽  
Dongfang Li ◽  
John M. Powers
Keyword(s):  
Accelerated Aging ◽  
Color Stability ◽  
Restorative Materials

scholarly journals Color Stability of New Composite Restorative Materials Under Accelerated Aging

1980 ◽  
Vol 59 (12) ◽  
pp. 2071-2074 ◽  
Author(s):  
J.M. Powers ◽  
P.L. Fan ◽  
C.N. Raptis
Keyword(s):  
Accelerated Aging ◽  
Color Stability ◽  
Restorative Materials

Accelerated Aging Affects Color Stability of Provisional Restorative Materials

1997 ◽  
Vol 6 (3) ◽  
pp. 183-188 ◽  
Author(s):  
Pamela G. Doray ◽  
Xinzhi Wang ◽  
John M. Powers ◽  
John O. Burgess
Keyword(s):  
Accelerated Aging ◽  
Color Stability ◽  
Restorative Materials

Color stability of provisional restorative materials after accelerated aging

2001 ◽  
Vol 10 (4) ◽  
pp. 212-216 ◽  
Author(s):  
Pamela G. Doray ◽  
Dongfang Li ◽  
John M. Powers
Keyword(s):  
Accelerated Aging ◽  
Color Stability ◽  
Restorative Materials

Color Stability and Degree of Cure of Direct Composite Restoratives After Accelerated Aging

2007 ◽  
Vol 32 (4) ◽  
pp. 406-411 ◽  
Author(s):  
A. Sarafianou ◽  
S. Iosifidou ◽  
T. Papadopoulos ◽  
G. Eliades
Keyword(s):  
Clinical Relevance ◽  
Accelerated Aging ◽  
Color Stability ◽  
Degree Of Cure ◽  
Color Changes ◽  
Direct Light ◽  
Restorative Materials

Clinical Relevance Accelerated hydrothermal- and photo-aging of direct light-cured composite restorative materials induced visually perceptible but clinically acceptable total color changes, along with a reduction in the amount of remaining C=C bonds.

Assessment of Color Stability of Treated Leathers with Silicone Oil and Polyethylene Glycol

2014 ◽  
Vol 1 (1) ◽  
pp. 24-34
Author(s):  
Alireza K. ◽  
Hossein Ahmadi ◽  
Mohsen Mohammadi
Keyword(s):  
Ascorbic Acid ◽  
Polyethylene Glycol ◽  
Treatment Process ◽  
Color Change ◽  
Silicone Oil ◽  
Accelerated Aging ◽  
Color Stability ◽  
Antioxidant Additive ◽  
Before And After ◽  
Aesthetic Values

Lubricants and leather dressings are the most common treatments of dry and water logged historical leathers. Color change has a great importance during the time and treatment process, due to visual and aesthetic values of historic leather relics. Polyethylene glycol (PEG) and silicone oil (SiO) are frequently used leather dressings in the conservation procedures. Therefore, color stability of treated leathers with PEG and SiO were investigated before and after heat accelerated aging. Moreover, application of ascorbic acid was evaluated as an antioxidant additive for PEG (PEG+AA).Color change after treatment and aging were studied by colorimetry technique in the CIE *L*a*b system. Results indicated to severe color alteration in PEG treated and aged leathers with or without ascorbic acid. Whereas, SiO treated samples showed better stability and minimum color shift after aging. Silicone oil was characterized as the best dressing for historical leathers with compared to PEG and PEG+AA, due to its high stability and aesthetical properties.

Color stability of the resin cements with accelerated aging

2008 ◽  
Vol 33 (4) ◽  
pp. 389 ◽  
Author(s):  
Ha-Jeung Song ◽  
Su-Jung Park ◽  
Yun-Chan Hwang ◽  
Won-Mann Oh ◽  
In-Nam Hwang
Keyword(s):  
Accelerated Aging ◽  
Color Stability ◽  
Resin Cements

scholarly journals Evaluation of color stability of different temporary restorative materials

2015 ◽  
Vol 44 (5) ◽  
pp. 262-267 ◽  
Author(s):  
José Vitor Quinelli Mazaro ◽  
Luiz Miguel Minani ◽  
Adriana Cristina Zavanelli ◽  
Caroline Cantieri de Mello ◽  
Cleidiel Aparecido Araújo Lemos
Keyword(s):  
Storage Time ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
Time Interval ◽  
Acrylic Resins ◽  
Significant Difference ◽  
Restorative Materials ◽  
Before And After ◽  
Level Of Significance

AbstractIntroductionTemporary restorative materials are widely used, however, little is know about their color stability.Objectiveto evaluate the color stability of the following temporary restorative materials: acrylic and bis-acrylic resins after immersion in pigmenting solutions for different periods of storage.Material and methodFour materials were tested (Dêncor/Clássico, Protemp 4/3M ESPE; Structur 2 SC/Voco; Luxatemp AM Plus/DMG) and 30 test specimens (15 mm in diameter and 2 mm thick) per material were fabricated. They were divided according to the storage medium (artificial saliva, saliva + cola type soda, and saliva + coffee) and storage time intervals (2, 5, 7 and 15 days). Color measurements were made before and after immersions, with use of a spectrophotometer, by means of the CIE L*a*b* system. The data were analyzed by the analysis of variance and the Tukey Test, at a level of significance of 5%.ResultAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). When bis-acrylic resins were compared no significant difference was observed between the resins Structur and Luxatemp (p=0.767). As regards solutions tested, coffee showed the highest color change values (p<0.001), and the longer the storage time interval, the greater was the color change in all the temporary restorative materials analyzed (p<0.001).ConclusionAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). Coffee caused the greatest color change, and immersion time was determinant in color stability of the temporary materials analyzed.

Color stability of sealed composite resin restorative materials after ultraviolet artificial aging and immersion in staining solutions

2011 ◽  
Vol 105 (4) ◽  
pp. 236-241 ◽  
Author(s):  
Anderson Catelan ◽  
André Luiz Fraga Briso ◽  
Renato Hermann Sundfeld ◽  
Marcelo Coelho Goiato ◽  
Paulo Henrique dos Santos
Keyword(s):  
Artificial Aging ◽  
Composite Resin ◽  
Color Stability ◽  
Restorative Materials

scholarly journals Color Stability of a Pigmented Elastomer for Maxillofacial Appliances

1979 ◽  
Vol 58 (5) ◽  
pp. 1450-1454 ◽  
Author(s):  
Andrew Koran ◽  
Robert Yu ◽  
John M. Powers ◽  
Robert G. Craig
Keyword(s):  
Accelerated Aging ◽  
Color Stability ◽  
Clinical Use ◽  
Reflection Spectrophotometry ◽  
Excellent Color

The color stability of a series of eleven maxillofacial pigments was determined after accelerated aging using reflection spectrophotometry. The results indicate that seven of the pigments demonstrated good to excellent color stability, while four of the pigments were less promising for clinical use.

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