Color Difference Research Articles

Convective Drying with the Application of Ultrasonic Pre-Treatment: The Effect of Applied Conditions on the Selected Properties of Dried Apples

The aim of this study was to evaluate the effect of ultrasound used as a preliminary treatment and drying temperature on the properties of dried apples (var. Golden Delicious). The aim of the work was also to optimise the process in terms of reducing the drying time and obtaining a product with specific properties. The apple tissue was sonicated for various times from 30 to 60 min. Then, the tissue was air-dried with a constant air flow of 55 to 85 °C. The work determined the dry substance content, water activity, colour parameters, content, antioxidant activity, and hygroscopicity of the dried material. The drying kinetics were also analysed. The results showed that the decrease in sonification time increased the dry matter content and reduced water activity. Also, the decrease in drying temperature caused a smaller intake of water and led to a lower hygroscopicity of dried apples. The selected parameters of the process had a positive effect on the preservation of bioactive compounds and led to an increase in antioxidant activity. Experimental results were adapted by a second-order polynomial model, where analysis of variance was utilized to define optimal drying conditions. Therefore, considering the shortest drying time, the lowest colour difference, ΔE, and the highest antioxidant activity, the best condition for the drying of apple tissue can be obtained with the application of 30 min of samples sonication and drying of apples at a temperature of 80.9 °C.

Prediction of the thermal degradation–induced colour change of acrylonitrile butadiene styrene products as a function of temperature and titanium dioxide content

In this study, we examined the thermal degradation–induced colour change of acrylonitrile butadiene styrene (ABS)–based titanium dioxide (TiO2)–doped products as a function of TiO2 content and temperature. Based on the time–temperature superposition (tTS) principle and the CIELAB colour space, we proposed a methodology for developing a robust model to estimate the long-term colour change of polymers doped with TiO2 at elevated temperatures. We used 800 h of measurement data to develop the model and validated the colour change predictions of the model in 1600 h. The average colour difference between the measured and modelled results at the application temperature range (below 80 °C) was <1.5, smaller than the just noticeable difference (JND) in the CIELAB colour space. We found that above a certain TiO2 content (approximately 3 wt%), the colour retention of the ABS/TiO2 specimens can no longer be improved by increasing their TiO2 content. To show the applicability of the model, we present two simple case studies predicting the colour and appearance of a polymer product under constant and variable heat loads. The proposed methodology provides an excellent tool for design, as it can be used to determine the optimum amount of TiO2. Moreover, it accelerates and simplifies the design process.

Feature Weighted Cycle Generative Adversarial Network with Facial Landmark Recognition and Perceptual Color Distance for Enhanced Face Animation Generation

We propose an anime style transfer model to generate anime faces from human face images. We improve the model by modifying the normalization function to obtain more feature information. To make the face feature position of the anime face similar to the human face, we propose facial landmark loss to calculate the error between the generated image and the real human face image. To avoid obvious color deviation in the generated images, we introduced perceptual color loss into the loss function. In addition, due to the lack of reasonable metrics to evaluate the quality of the animated images, we propose the use of Fréchet anime inception distance to calculate the distance between the distribution of the generated animated images and the real animated images in high-dimensional space, so as to understand the quality of the generated animated images. In the user survey, up to 74.46% of users think that the image produced by the proposed method is the best compared with other models. Also, the proposed method reaches a score of 126.05 for Fréchet anime inception distance. Our model performs the best in both user studies and FAID, showing that we have achieved better performance in human visual perception and model distribution. According to the experimental results and user feedback, our proposed method can generate results with better quality compared to existing methods.

A New Bivalve Species Glauconome huangheensis of the Genus Glauconome J. E. Gray, 1828 (Bivalvia, Venerida, Cyrenoidea, Glauconomidae), from Shandong, China

The family Glauconomidae has few species, limited molecular data description, and insufficient research attention. The biodiversity of Glauconomidae within China deserves further exploration. In recent years, the taxonomic status of Glauconomidae has undergone changes, and some studies have found a close relationship between Glauconomidae and the family Cyrenidae based on molecular data, suggesting that Glauconomidae should be classified under the superfamily Cyrenoidea. However, both domestic and international research has mainly focused on only four species of Glauconomidae, indicating an urgent need for more species data support. Recently, 46 specimens of Glauconomidae were collected in the Yellow River Estuary in Dongying City of Shandong Province in China. Through a comparative analysis of shell morphology and molecular phylogenetic analysis of COI and 16S rRNA, two species of Glauconomidae was discovered. One is Glauconome angulata Reeve, 1844, and the other is a new species of Glauconomidae found in the Yellow River, named Glauconome huangheensis sp. nov. The G. huangheensis sp. nov. exhibits distinct differences in shell shape and shell color compared to other species of Glauconomidae, resembling G. angulata. There are also significant differences in shell color, shell sculpture, ligament size, and shell thickness. Furthermore, the molecular phylogenetic analysis based on COI and 16S rRNA genes supports the validity of G. huangheensis sp. nov. as a species. It indicates a close phylogenetic relationship with G. angulata, making them sister species. This study provides a redescription of the morphological characteristics of G. angulata and G. huangheensis sp. nov., laying the foundation for the morphological classification, biodiversity research, and conservation of Glauconomidae species.

Comparison of different drying technologies for green tea: Changes in color, non-volatile and volatile compounds

Drying technology plays a pivotal role in tea processing. Herein, the differences in color, non-volatile, and volatile components of green tea under various drying methods were investigated. The results indicated that vacuum freeze-microwave increased the L* and b* values, and decreased the a* values of tea leaves. Moreover, vacuum freeze-microwave drying resulted in higher polyphenol content than the other three drying methods although there was no significant difference. A total of 43 volatile compounds were identified. Of these, 2-propanone, ethanol(D), ethanol(M), ethyl acetate(M), 2-methyl-1-butanol, and 2-methylthiophene were found to play an important role in the above discrimination (VIP >1.5). Dry extraction showed a higher content of volatile components than wet extraction. Regardless of the extraction conditions, vacuum freeze-microwave drying exhibited a stronger signal intensity and more volatile components than other drying methods. This study provides a reference for analyzing the quality differences of green tea by different drying methods.

Comprehensive Analysis of Geographical Impact on Flavor Profiles of Braised Chicken Across Eastern, Central, and Western China Using GC-IMS, E-Nose Techniques and Sensory Evaluation

The geographical influence on the flavor profiles and color differences of Braised Chicken from Eastern, Central, and Western China was investigated using headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS), electronic nose (E-nose) analysis, color-measuring instruments and sensory evaluation. To ensure the reproducibility and reliability, five types of braised chicken varieties were collected for five batches across six months. The model of E-nose PCA can effectively distinguish the five braised chicken samples. The five types of braised chicken showed distinct color differences. A total of 54 volatile compounds were identified by HS-GC-IMS, including 18 aldehydes,14 alcohols,10 ketones,5 esters,1 acid,1 furan, and 5 terpenes. The PLS-DA analysis revealed that the flavor of Daokou Braised Chicken (DZ) was significantly associated with aldehydes and ketones, Jingning Braised Chicken (JN) flavor characteristics were linked to alcohols such as heptanol and 1-pentanol, Fuli Ji Braised Chicken (FLJ) flavor was attributed to terpenes including 1,8-cineole and linalool. The flavor profiles of Professor Huang Braised Chicken (PH) were similar to that of Daokou Braised Chicken (DK), with green, fruity, and pungent aromas. The sensory analysis showed that the five types braised chicken had significant differences (P < 0.05), with PH Braised Chicken, DZ Braised Chicken, and JN Braised Chicken exhibiting a more intense meat flavor. This comprehensive analysis of the geographical influence on the flavor profiles and color variations of braised chicken provided a theoretical foundation for enhancing its flavor and overall quality.

Influence of dietary replacement of soybean meal with crawfish shell meals on the growth, skin coloration and muscle texture of Oujiang color common carp (Cyprinus carpio var. color)

An 8-week growth experiment was conducted to investigate the effects of different levels of crawfish shell meals (Procambarus clarkii, CSM) replacement of soybean meal (SM) on growth, feed utilization, antioxidant response, body color and muscle quality of Oujiang color common carp (3.0 ± 0.5g, Cyprinus carpio var. Color), and to assess the suitable range of CSM replacement of soybean meal and its effects on fish. Three isonitrogenous and isolipidic experimental diets were formulated to replace SM by equal proportion (1:1, w: w) of CSM at 0, 25, or 50% (designated as CSM0, CSM25, or CSM50, respectively). The results showed that weight gain (WG) as well as hepatic superoxide dismutase (SOD) activities were significantly (P < 0.05) higher in the CSM25group compared to the CSM0 group. In addition, there were no significant (P > 0.05) differences in growth performance, feed utilization, skin color, and muscle texture parameters between CSM50 and CSM0 groups, except for the overall ash content, which was significantly (P < 0.05) higher in CSM50 than CSM0 group. Therefore, it was feasible to replace 50% of SM with CSM in Oujiang color common carp diets without negative effects on serum biochemical indices, antioxidant and immune responses, skin color or muscle texture. These findings suggested that CSM could be a potential alternative protein source in diets of Oujiang color common carp.

Recyclable and non‐recyclable packaging films with different barrier properties: Effect of processing and storage time on quality of mashed potato and ground carrot

AbstractThe aim of this study was to evaluate if high barrier recyclable material polyethylene/ethylene vinyl alcohol (PE/EVOH) can be an alternative non‐recyclable polyamides (PA)/PE laminate and also if high barrier is required or recyclable PE material with low barrier properties is good enough to maintain the quality of thermally processed mashed potato and ground carrot. The oxygen transmission rate (OTR) of the PA/PE and PE films decreased after heat treatment, while no change was observed for PE/EVOH films. Food contact did not impact the OTR of PA/PE and PE/EVOH films, while the OTR of PE films decreased. The water vapor transmission rate (WVTR) of PA/PE and PE/EVOH films increased after heat treatment. In general, the WVTR of films increased after food contact. The tensile strength of all films was only reduced up to 3–4 weeks of food contact. After 10 weeks, the PE film showed significantly lower hue values and a larger total color difference than the two other films. Light exposure reduced the hue values and increased total color difference after 6 weeks of storage. The odor and flavor of both mashed potatoes and ground carrots were affected by light exposure. The mashed potato showed a slight reduction in freshness‐odor for all materials with storage time. For flavor, mashed potato and ground carrot showed similar trends; flavor was scored unacceptable when packaged in PE films after 6 weeks, but when packaged in PA/PE and PE/EVOH films, the flavor was still acceptable after 10 weeks of storage.

Comprehensive impact of pre-treatment methods on white radish quality, water migration, and microstructure

The preprocessing stage is crucial in vegetable processing, significantly influencing the final product's quality. This study investigates the effects of various pre-pre-treatment methods, including cutting, blanching, osmotic, and ultrasound-assisted osmotic treatment, on the quality characteristics, water migration, and microstructure of white radish. The results showed that osmosis and ultrasound-assisted osmosis has the least effect on the total color difference (ΔE) and the greatest water loss (WL) (p < 0.05); blanching has the least effect on the hardness and eutectic points (p < 0.05); and the blanching-ultrasound-assisted osmosis has the greatest solid gain (p < 0.05). The increase of WL led to a decrease in hardness (−0.82). By analyzing the quality characteristics of different pre-treatment methods, contributing to the development of suitable pre-treatment methods for different products and optimization pre-treatments according to requirements. The mechanism of quality characteristics of pre-treatments on products is the future research direction.

Hierarchical sodium titanate supported PdO for high-performance eye-readable hydrogen-leakage detection

PdO pigment is considered as a promising material for eye-readable hydrogen detection. However, the aggregation of the support material will encapsulate PdO nanoparticles and thus significantly weaken the sensing performance. To solve this problem, sodium titanate microscale hierarchical sphere (NTO MHS) is selected as a new support. Thanks to the aggregation-resistant morphology, NTO MHS ensures thoroughly exposure of PdO and facilitates its complete reduction in H2. Therefore, even with a lower PdO loading amount than previous reports, PdO-decorated NTO (PdO-NTO) demonstrates an overall better performance, with a dramatic color difference of 55 and 44 in 4% and 0.3% H2, respectively. The enormous color change at such a low concentration promises PdO-NTO as an outstanding eye-readable hydrogen-leakage warning label. Moreover, we show that the used sensing material can be collected and reactivated repeatedly, further reducing the overall cost. This work highlights the importance of support material designing for PdO-based hydrogen sensors.

Cellular and Molecular Basis of Environment-Induced Color Change in a Tree Frog

Background color matching is essential for camouflage and thermoregulation in ectothermic vertebrates, yet several key cellular-level questions remain unresolved. For instance, it is unclear whether the number of chromatophores or the activity of individual chromatophores plays a more critical role in this process. Using single-cell RNA sequencing (scRNA-seq), we investigated the cellular and molecular mechanisms underlying color change in Rhacophorus dugritei, which adapted to its background by displaying light-green skin on white and black skin on black within two days. We identified two types of chromatophores in their skin, both responsible for the observed color differences. Our findings reveal that morphological color change (MCC) is the dominant process, with the number of chromatophores being more influential in driving color change than the transcriptional activity of melanogenesis in individual cells. Additionally, melanophores from darker individuals exhibited increased activity in energy metabolism pathways, while those from lighter individuals showed stronger immune-related gene expression, suggesting that background adaptation involves more than just morphological changes. Overall, this study successfully applied single-cell sequencing technology to investigate skin pigmentation in a non-model organism. Our results suggest that MCC driven by chromatophore proliferation is a key mechanism of background adaptation, offering new insights into amphibian color adaptation and environmental adaptation in other vertebrates.

Xyloglucan based edible coating in combination with Borassus flabellifer seed coat extract for extending strawberry postharvest shelf life

In this study, xyloglucan (XG) based edible coatings were developed and combined with a bioactive compound, Borassus flabellifer seed coat extract (BFE). The effect of designed edible coatings on the quality of strawberry fruits was investigated over an 8-day storage under ambient conditions. The results revealed the preservation effects in intrinsic properties of coated strawberries that the XG/BFE coated strawberries showed superior maintenance of qualitative parameters over uncoated strawberries, showing delayed weight loss, pH, and total soluble solids, tritratable acidity, retained firmness and lightness, as well as minimized the total color difference at the end of storage. Furthermore, the inclusion of BFE significantly enhanced the antimicrobial properties of developed edible coatings, evidenced by reduced microbial load. These results paved a solid way for designing the active edible XG/BFE coating for maintaining the postharvest quality and extending the shelf life of strawberries under ambient conditions.

Starch-pectin smart tag containing purple carrot peel anthocyanins as a potential indicator of analogous meat freshness

Smart films of starch/pectin and purple carrot peel (PCP) containing anthocyanins were developed, characterized, and used as pH-responsive tags to monitor plant-based chicken analogous. This study innovates by incorporating PCP in the film solution both as an extract and as a powder, and the resulting tags were applied to a plant-based food. PCP powder <100-mesh was directly incorporated into the film-forming suspension. For powder >100-mesh, two extracts were tested: an aqueous solution and a 1 % NADES solution added to the film-forming suspension. Quantification of PCP anthocyanins by HPLC showed a higher extraction under acidic conditions (1664 mg C3G equivalents 100 g−1). Films with PCP presented greater light protection. Films with 15 % and 25 % PCP and those with added extract showed better tensile strength (3.0–3.6 MPa), elongation at break (16–20 %) and a water contact angle of 52°. All films responded to pH variations (1 to 14) and ammonia vapor and showed ΔE* values >5. After 3 days, films used as smart tags monitoring chicken analogous presented noticeable color differences for PCPNADES (55 ± 8) and 15%PCP (40 ± 1). PCP showed strong potential as a pigmenting agent in films, especially as an aqueous extract with NADES for use as pH-responsive tags in chicken analogous.

A novel approach for the replacement of accuracy and precision measurements with the visual instrument agreement scale (VIAS) in evaluating the performance of four intraoral scanners and one shade measurement device

ObjectivesThe terms 'accuracy' and 'precision' are tightly defined in color science but are often used ambiguously in dental research. This study introduces the visual instrument agreement scale (VIAS), a new method for determining visual-instrumental agreement in dental colorimetry by comparing visually perceived and measured color differences. Materials and MethodsIn-vivo tooth color measurements were taken from 16 participants using four intraoral scanners (Primescan, Medit i700, Carestream CS3700, Trios 3) and one spectrophotometer (Vita Easyshade V). Visual shade assessment was also performed by one expert observer using the 3D Master shade guide. Statistical significance testing was conducted using the STRESS index to calculate VIAS, and the F-statistic was used to evaluate device performance. ResultsCarestream CS3700 achieved the highest visual-instrumental agreement with a VIAS score of 82%, performing significantly better than the other devices. Primescan, Medit i700, and Trios 3 showed scores of 76%, 75%, and 72%, respectively, with no significant differences between them. Vita Easyshade V scored 57%, performing significantly worse than the other devices. ConclusionsThe overall performance of the intraoral scanners was strong, with Carestream CS3700 approaching excellent performance. The VIAS method offers a practical, color science-based framework for evaluating visual-instrumental agreement and can be easily replicated using the freely available toolbox. Clinical SignificanceIntraoral scanners performed surprisingly better than a spectrophotometer specifically designed for tooth color measurement and which is often regarded as the gold standard. Additionally, VIAS offers a new, scientifically grounded approach for testing visual-instrumental agreement in dental colorimetry.

Investigating the Multifaceted Changes in Physicochemical and Nutritional Attributes of Chicken-Based Nutri Cereal Mix under Cold Plasma Treatment

In this study multifaceted changes in physicochemical and nutritional properties of nutri-cereal mix (NCM) under cold plasma treatment (CPT) were investigated. In present investigation NCM was prepared and treated under CPT using a DBD-based plasma source for 5 min, 10 min, and 15 min at 9 kv. The results revealed that the water and oil absorbing capacity of cold plasma treated Nutri cereal mix (CPT-NCM) increased with increasing CPT time. The carbohydrate content in CPT-NCM decreased with increasing CPT time. From the colour analysis it was observed that the total colour difference (TCD) and whiteness index (WI) increased from 0.23 (NCM -5) to 0.97 (NCM -15), and 55.11 (NCM -5) to 56.08 (NCM -15), respectively. Additionally, the differential scanning calorimetry (DSC) analysis suggested that the thermostability of CPT-NCM is likely affected by NCM levels and changes in protein structure and conformation. The diffractograms and micrographs confirmed the crystallinity and microstructural changes in protein content, respectively. Amino acid profiling confirmed that NCM -10 comprises the higher amount of most of the analysed amino acids. Overall, the current study recommends that CPT enhances the physicochemical and nutritional properties of NCM, making it suitable for producing a variety of food products with improved quality characteristics.

Wood-based phase change energy storage composite material with reversible thermochromic properties

With the continuous increase in global energy demand and environmental challenges, the efficient utilization and storage of energy have become critical areas of scientific research. This study presents the preparation and performance assessment of a wood-based phase change composite (TPW) with reversible thermochromic properties. Thermogravimetric analysis (TG) confirmed thermal stability across 26 °C to 270 °C, while differential scanning calorimetry (DSC) demonstrated that TPW has good thermal cycling performance, and suitable phase change temperature at about 34 °C. Thermal insulation tests showed that TPW can reduce heat exchange between inside and outside environment, maintaining the internal temperature for longer time. Below the transition temperature, the material displays a bluish-purple color, transitioning to light yellow upon heating, with a notable color difference (ΔE⁎) increase from 3.46 to 67.89. Since the phase transition temperature close to human body temperature, enhances TPW’s compatibility for applications in home decor, temperature indicators, and anti-counterfeit labeling. This research contributes novel insights and foundational data for advancing wood-based functional materials in sustainable applications.

Comparison of Optical Properties in Single-Shade and Multi-Shade Composite Resins

This study aimed to evaluate the differences in optical properties, such as color and translucency, between single-shade composite resins (Omnichroma) and multi-shade composite resins (Filtek Z350XT). Furthermore, the study assessed the influence of the surrounding structure’s shades on the shade matching of Omnichroma. Two types of disc-shaped specimens were prepared: Single specimen (diameter, 8.0 mm; thickness, 1.0 and 2.0 mm), consisting of either Omnichroma or Filtek Z350XT in the A1B, A2B, and A3B shades, and dual specimen (diameter, 8.0 mm; thickness, 2.0 mm), featuring a bottom layer (diameter, 8.0 mm; thickness, 1.0 mm) of Filtek Z350XT in the A1B, A2B, and A3B shades, and a top layer (diameter, 8.0 mm; thickness, 1.0 mm) filled with Omnichroma. Commission Internationale d’Eclairage &lt;i&gt;L&lt;sup&gt;*&lt;/sup&gt;a&lt;sup&gt;*&lt;/sup&gt;b&lt;sup&gt;*&lt;/sup&gt;&lt;/i&gt; color measurements and calculations for color differences (Δ&lt;i&gt;E&lt;sup&gt;*&lt;/sup&gt;&lt;sub&gt;ab&lt;/sub&gt;&lt;/i&gt;) and translucency parameters (TP) of each specimen were performed. Omnichroma exhibited a lighter, more greenish, and blueish color compared to the Filtek Z350XT in A1B, A2B, and A3B shades. With increased thickness, Omnichroma became more yellowish, whereas Filtek Z350XT became less yellowish. Additionally, when Omnichroma was applied over Filtek Z350XT in dual specimens, the yellowness increased further beyond Omnichroma’s original yellowness level. Consequently, Omnichroma achieved clinically acceptable shade matching, especially in the A3 shade, because it aligns well with the original high yellowness of the A3 shade. Additionally, Omnichroma’s superior shade-matching ability was attributed to its higher translucency compared to Filtek Z350XT. Therefore, Omnichroma might be considered useful in pediatric dentistry by simplifying the shade selection process.

Underwater image enhancement through color deviation detection-guided peak flattening

Underwater images frequently exhibit color deviation and blurring. Color deviation arises from the selective spectral absorption of light, whereas blurring results from particle scattering within the water. These challenges impede the performance of high-level visual perception tasks. To improve the underwater image quality, we propose an adaptive method for underwater image enhancement that employs color deviation detection-guided peak flattening. Utilizing six features identified through statistical analysis of the latest underwater real-image datasets, we develop a color deviation detection model for underwater images, which employs ensemble learning to quantify the extent of color deviation. Subsequently, we devise the peak flattening algorithm to achieve histogram adaptive partition conversion. The conversion range is determined by the estimated color deviation value, eliminating the need for iteration. For channels with severe color deviation, we employ the weighted fusion to restore partial gray distribution. Comparisons with state-of-the-art methods demonstrate that the proposed method significantly improves contrast and color fidelity, particularly in images with severe degradation.

Infrared drying effects on the quality of jujube and process optimization using response surface methodology

This study developed a specialized laboratory-scale apparatus utilizing infrared technology to optimize the infrared drying process and investigate water transfer dynamics and structural transformations during infrared radiation drying (IRD) of jujube. Key parameters, including rehydration ratio, color deviation, and Vitamin C (VC) retention rate, were assessed for Xinjiang gray jujube were assessed. Additionally. Comparative analyses were conducted to evaluate microstructural, physicochemical, and volatile component differences between IRD and hot air drying (HAD) methodologies. Response surface analysis was employed to optimize IRD parameters. The results identified optimal conditions as an infrared temperature of 55 °C, a loading capacity of 490 g, and an infrared radiation distance of 11 cm, resulting in a rehydration ratio of 1.75, a color deviation of 3.01, and a VC retention rate of 59.10g/100g. IRD demonstrated superior performance compared to HAD, with a 34.88g/100g improvement in VC retention rate and a 42.90g/100g reduction in drying time. Additionally, jujube dried using IRD exhibited a denser microstructure than those dried by HAD. These findings highlight the effectiveness of IRD in accelerating drying processes while maintaining high jujube quality, thereby providing a robust theoretical foundation for future jujube drying research.

Visibility of Recurrent Caries Through Universal Shade Resin Composite Restorations

This in vitro study aimed to investigate whether color differences in the stained cavity floor simulating recurrent caries can be detected using various restored resin composites. Artificial teeth were made with conventional resin composite (Estellite Sigma Quick A3; ET), and class V cavities were prepared. To simulate the color of caries, a dot was marked in the center of the cavity floor using four different magic pens. The cavities were filled with ET and two universal shade resin composites (UC, Omnichroma; OMI, Essentia Universal; ESS). For photographic analysis, a standard correction color chart was used. The color difference (ΔE00) between (i) the lab value at the center of the cavity and (ii) the average lab value at 1 mm mesial and distal to the center of the cavity was calculated. The data were statistically746o-way ANOVA (p &lt; 0.05). For visual analysis, 25 dentists were asked to complete a questionnaire to determine whether the color differences were noticeable. In the photographic analysis, UC showed larger ΔE00 values than ET in all colors. Visual analysis revealed higher detection rates for UC than ET. Universal shade resin composite tends to reflect the color of the cavity more effectively than conventional resin composite.