Evaluation of the color stability of light cured composite resins according to the resin matrices

Dahye, Yu; Jung, Hyunjin; Choi, Sung‐Gil; Hwang, In-Nam

doi:10.14815/kjdm.2019.46.2.109

Cited by 2 publications

(2 citation statements)

References 29 publications

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“…특히 색상의 차이를 유발하는 빛의 흡수와 반사는 레진의 성분에 따라 다르게 나타 나기도 하며, 레진의 두께에 따라 색이 달라진다는 연구도 소개되었다 [12]. 현재까지 레진의 색 평가에 대한 연구는 동요치 고정에 사용되는 복 합레진의 색 [13], 레진의 표면처리 및 기질의 종류에 따른 색 안정성 [14,15], 복합 레진의 색상 및 색 안전성 [16,17]…”

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Color evaluation by thickness of interim restorative resin produced by digital light processing 3D printer

Kang

Kim

2021

J. Tech. Dent.

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The purpose of this in vitro study was to measure and compare the thickness-dependent color dimensions of digital light processing (DLP) three-dimensional (3D) printer and conventional interim restorative resin.Methods: Specimens (N=60) were fabricated using either subtractive manufacturing (S group) or DLP 3D printing (D group) material. All milled and 3D-printed specimens were allocated into three different groups (n=10) according to different thicknesses as follows: 1.0, 1.5, and 2.0 mm. Color measurements in the CIELab coordinates were made using a spectrophotometer under room light conditions (1,003 lux). The color differences (ΔE*) between the specimen and control target data were calculated. Data were analyzed using the oneway analysis of variance (ANOVA). Post hoc comparisons were conducted using Tukey's honestly significant difference method (α=0.05 for all tests). Results:The ΔL*, Δa*, Δb*, and ΔE* values of interim restorative resin produced by DLP 3D printing were obtained in terms of the specimen's thickness increased compared with the increases by subtractive manufacturing. When the thickness was similar, the color difference between subtractive manufacturing and DLP 3D printing was ≥5.5, which is a value required by the dentist for remanufacturing. Conclusion:Color was influenced by the thickness of the interim restorative resin produced by DLP 3D printing.

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Section: J Tdunclassified

Color evaluation by thickness of interim restorative resin produced by digital light processing 3D printer

Kang

Kim

2021

J. Tech. Dent.

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“…자주 사용되는 내복약 용액에 의해 서도 수복물의 색조 변화가 발생하며, 약품의 종류와 수복물에 따라 그 색 변화는 차이가 있다고 하였다 [7]. 이와 같은 외인성 착색뿐 아니라 내인성인 레진 기질 자체의 특성, 무기 필러의 양 과 크기, 광중합개시-촉진제와 중합도, 미중합 레진의 변성, 시 간의 경과 등의 요인들도 변색을 일으킨다 [8].…”

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Staining of restorative composite resins at various light curing times

Woo,

Kim

2023

Oral Biol Res

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This study aimed to assess the relationship between different degrees of conversion attained by different curing times and color change of composite resins. Disc-shaped specimens (2.0 mm in thickness and 8.0 mm in diameter) were made from two types of composite resins (Filtek Supreme Ultra and Tetric EvoCeram) with four different light curing times (5, 10, 15, and 20 sec). The degree of conversion was measured using Fourier transform infrared spectroscopy. Specimens were immersed in three solutions (water, coffee, and red wine) for 4 and 24 weeks. Color was measured by spectrophotometry (CM-700d), and the color differences (ΔE 00 ) were calculated. The difference in the degree of conversion according to different curing times were statistically significant and showed positive correlations (p<0.05). The degree of conversion and color change showed statistically significant negative correlation with Filtek Supreme Ultra and Tetric EvoCeram when aged in staining solutions: at 4 weeks, Filtek in wine (β=−0.648, R 2 =0.420, p=0.002), Filtek in coffee (β=−0.560, R 2 =0.314, p=0.01), Tetric in wine (β=−0.896, R 2 =0.804, p<0.001), and Tetric in coffee (β=−0.859, R 2 =0.738, p<0.001); at 24 weeks, Filtek in water (β=−0.594, R 2 =0.353, p=0.006), Filtek in wine (β=−0.656, R 2 =0.430, p=0.002), Filtek in coffee (β=−0.740, R 2 =0.548, p<0.001), Tetric in wine (β=−0.799, R 2 =0.639, p<0.001), and Tetric in coffee (β=−0.596, R 2 =0.738, p=0.006). A sufficient light curing time is needed for better color stability of composite resins exposed to common staining agents such as coffee and red wine.

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Evaluation of the color stability of light cured composite resins according to the resin matrices

Cited by 2 publications

References 29 publications

Color evaluation by thickness of interim restorative resin produced by digital light processing 3D printer

Color evaluation by thickness of interim restorative resin produced by digital light processing 3D printer

Staining of restorative composite resins at various light curing times

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