scholarly journals Comparative evaluation of the subtractive and additive manufacturing on the color stability of fixed provisional prosthesis materials

2021 ◽  
Vol 37 (2) ◽  
pp. 73-80
Author(s):  
Young-Ji Lee ◽  
Sang-Chun Oh
Keyword(s):  
Additive Manufacturing ◽  
Comparative Evaluation ◽  
Color Stability

scholarly journals Comparative evaluation of color stability of three commercially available provisional restorative materials: An in vitro study

2021 ◽  
Vol 21 (2) ◽  
pp. 161
Author(s):  
CoraAbigail Coutinho ◽  
Divya Hegde ◽  
Vinita Sanjeevan ◽  
IvyFernandes Coutinho ◽  
Akansha Priya
Keyword(s):  
Comparative Evaluation ◽  
In Vitro Study ◽  
Color Stability ◽  
Vitro Study ◽  
Restorative Materials

scholarly journals The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study

2015 ◽  
Vol 5 (3) ◽  
pp. 81-85
Author(s):  
K Lekha ◽  
H Dharanendra Kumar
Keyword(s):  
Comparative Evaluation ◽  
Color Change ◽  
In Vitro Study ◽  
Color Stability ◽  
Acrylic Resin ◽  
Silicone Elastomer ◽  
Heat Cure ◽  
Outdoor Weathering ◽  
Cobalt Blue

ABSTRACT Maxillofacial prosthetic materials either resin or elastomer used for the fabrication of facial prostheses have their own physical and mechanical properties. Maxillofacial prosthesis frequent replacement because the elastomer or acrylic resin and its pigments undergo color changes. Purpose Evaluate the effect of outdoor weathering on color stability of silicone and heat-cure acrylic with two different pigments. Materials and methods Total of 80 circular disk specimens, 40 silicone elastomer and 40 heat-cure clear acrylic resin were fabricated in the prepared mold and two dry earth pigments burnt sienna and cobalt blue was added to the specimens and it was subjected to simulated outdoor weathering. Before and after weathering, CIE values of both control and weathering groups were recorded by using spectrophotometer and tabulated. The obtained data were subjected to statistical analysis. Results Silicone elastomer with burnt sienna showed more color change when exposed to weathering followed by silicone with cobalt blue. Heat-cure with cobalt blue had shown some color change, heat-cure and burnt sienna were the most color stable. Conclusion From the study, it can be concluded that heat-cure acrylic resin with burnt sienna most color stable than silicone elastomer. How to cite this article Lekha K, Kumar HD, Meshramkar R, Nadiger RK. The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study. Int J Prosthodont Restor Dent 2015;5(3):81-85.

Comparative Evaluation of the Reproductive Trueness of Zirconia Crowns Fabricated Using Additive Manufacturing and Conventional Milling

2021 ◽  
Author(s):  
Shoko Miura ◽  
Takafumi Fujita ◽  
Shohei Tsukada ◽  
Daisuke Teshigawra ◽  
Konatsu Saito-Murakami ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Comparative Evaluation ◽  
Zirconia Crowns

scholarly journals Comparative evaluation of the color stability of universal composites

2021 ◽  
Vol 11 (Suppl. 1) ◽  
pp. 234-237
Author(s):  
Merve Gürses ◽  
Nevin Çobanoğlu ◽  
Omar Faez Abdulateef
Keyword(s):  
Comparative Evaluation ◽  
Color Change ◽  
Native Speakers ◽  
Color Stability ◽  
Composite Resins ◽  
Control Group ◽  
Distilled Water ◽  
Color Changes ◽  
Before And After ◽  
Native Speakers Of English

Aim: The aim of this study is to compare the color stability of different universal composites and to evaluate the effects of keeping them in water for 1 week before coloring. Methodology: Filtek Ultimate (FU), Estelite Ʃ Quick (EQ), and Ceram X One (CX) composites were used. The specimens were kept in the dark, dry environment for 24 hours, then polished, and each composite group was divided into 3 groups: the control, the group that was kept in water for 1 week before coloring and coloring (n=7). The samples in the control group were kept in distilled water for 3 weeks. Samples in the coloring group were colored with coffee for 2 weeks (C), and the samples in the last group were kept in water for 1 week and then stained with coffee for 2 weeks (W+C) (n=7). Color measurements for all samples were taken twice, once before and once after the coloring period. The color changes of the samples were measured using the ∆E* parameter, which was calculated with before and after measurements.  Results: For all composite resins, the ΔE values of the samples in the W+C and C groups were significantly higher than those in the control group. When the composites were compared with each other, the differences between the ΔE values of the composites in the control, W+C, and C groups were not statistically significant. For FU and ESQ, at the end of the coloration period, there were no statistically significant differences between the W+C and C groups. However, for CX, the color change of the samples in the W+C group was significantly higher than that in  the C group. Conclusion: Storage in distilled water for 1 week before staining did not reduce the color change values of the samples. Thus, after composite restorations are performed, there is no need to advise patients to avoid staining foods, especially in the first week after restoration.   How to cite this article: Abdulateef OF, Çobanoğlu N, Gürses M. Comparative evaluation of the color stability of universal composites. Int Dent Res 2021;11(Suppl.1):234-7. https://doi.org/10.5577/intdentres.2021.vol11.suppl1.34   Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

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