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Su L, Zhao Z, Xia J, Xia J, Nian Y, Shan K, Zhao D, He H, Li C. Protecting meat color: The interplay of betanin red and myoglobin through antioxidation and coloration. Food Chem 2024; 442:138410. [PMID: 38219566 DOI: 10.1016/j.foodchem.2024.138410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/01/2023] [Accepted: 01/08/2024] [Indexed: 01/16/2024]
Abstract
Myoglobin (Mb) responsible for meat color is easily oxidized resulting in meat discoloration. Here, betanin red (BR), as a natural pigment and antioxidant, was chosen for enhancing redness and inhibiting oxidation. Multiple spectroscopies, isothermal titration calorimetry and molecular docking demonstrated that BR changed the microenvironment of heme group and amino acid residues of Mb, inhibited the oxidation of oxymyoglobin. The main interaction force was hydrogen bond and one variable binding site provided a continuous protective barrier to realize antioxidation. The combination of antioxidation with the inherent red color of BR offered dual color protection effect on processed beef with the addition amount of 0.2 % BR. BR treatment enhanced the redness by 25.59 ∼ 53.24 % and the sensory acceptance by 4.89 ∼ 14.24 %, and decreased the lipid oxidation by 0.58 ∼ 15.92 %. This study paves a theoretical basis for the application of BR and its structural analogues in meat color protection and other quality improvement.
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Affiliation(s)
- Liuyu Su
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, MOST, Key Laboratory of Meat Processing, MARA, Jiangsu Collaborative Innovation Center of Meat Production, Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Zerun Zhao
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, MOST, Key Laboratory of Meat Processing, MARA, Jiangsu Collaborative Innovation Center of Meat Production, Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiulin Xia
- Suzhou Weizhixiang Food Co., LTD., Suzhou, Jiangsu, China
| | - Jing Xia
- Suzhou Weizhixiang Food Co., LTD., Suzhou, Jiangsu, China
| | - Yingqun Nian
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, MOST, Key Laboratory of Meat Processing, MARA, Jiangsu Collaborative Innovation Center of Meat Production, Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Kai Shan
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, MOST, Key Laboratory of Meat Processing, MARA, Jiangsu Collaborative Innovation Center of Meat Production, Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Di Zhao
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, MOST, Key Laboratory of Meat Processing, MARA, Jiangsu Collaborative Innovation Center of Meat Production, Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Hui He
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, MOST, Key Laboratory of Meat Processing, MARA, Jiangsu Collaborative Innovation Center of Meat Production, Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
| | - Chunbao Li
- State Key Laboratory of Meat Quality Control and Cultured Meat Development, MOST, Key Laboratory of Meat Processing, MARA, Jiangsu Collaborative Innovation Center of Meat Production, Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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Wessel GM, Xing L, Oulhen N. More than a colour; how pigment influences colourblind microbes. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230077. [PMID: 38497266 PMCID: PMC10945406 DOI: 10.1098/rstb.2023.0077] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/07/2023] [Indexed: 03/19/2024] Open
Abstract
Many animals have pigments when they themselves cannot see colour. Perhaps those pigments enable the animal to avoid predators, or to attract mates. Maybe even those pigmented surfaces are hosts for microbes, even when the microbes do not see colour. Do some pigments then serve as a chemical signal for a good or bad microbial substrate? Maybe pigments attract or repel various microbe types? Echinoderms serve as an important model to test the mechanisms of pigment-based microbial interactions. Echinoderms are marine benthic organisms, ranging from intertidal habitats to depths of thousands of metres and are exposed to large varieties of microbes. They are also highly pigmented, with a diverse variety of colours between and even within species. Here we focus on one type of pigment (naphthoquinones) made by polyketide synthase, modified by flavin-dependent monoxygenases, and on one type of function, microbial interaction. Recent successes in targeted gene inactivation by CRISPR/Cas9 in sea urchins supports the contention that colour is more than it seems. Here we dissect the players, and their interactions to better understand how such host factors influence a microbial colonization. This article is part of the theme issue 'Sculpting the microbiome: how host factors determine and respond to microbial colonization'.
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Affiliation(s)
- Gary M. Wessel
- Department of Molecular Biology, Cellular Biology, and Biochemistry, Brown University, Providence, RI 02912, USA
| | - Lili Xing
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Chinese Academy of Sciences, Qingdao 266071, People's Republic of China
- CAS Engineering Laboratory for Marine Ranching, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Nathalie Oulhen
- Department of Molecular Biology, Cellular Biology, and Biochemistry, Brown University, Providence, RI 02912, USA
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3
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Medina-Plaza C, DuBois A, Tomasino E, Oberholster A. Effect of storing conditions (lighting, temperature and bottle color) on rosé wine attributes. Food Chem 2024; 439:138032. [PMID: 38039610 DOI: 10.1016/j.foodchem.2023.138032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 12/03/2023]
Abstract
The majority of rosé wines are bottled in clear bottles as color is an important factor in consumer preference. Post-bottling wine can be exposed to UV-visible light and temperature fluctuations resulting in quality degradation. This study investigated the impact of bottle color (flint and antique green), light exposure (darkness, LED and fluorescent bulb), and temperature (12 °C and 22 °C) on rosé wine quality using a full factorial design with three different wines (Grenache, Pinot noir and Zinfandel). The impact on chemical composition, color, phenolics and aromatics was determined. Projective mapping was carried out for sensorial analysis. Changes in the aromatics, color and phenolic composition were detectable after three months and more noticeable after six months of storage. Overall, all variables studied impacted rosé wine characteristics significantly. However, higher temperature in combination with clear glass bottles under fluorescent light were the most detrimental conditions.
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Affiliation(s)
- Cristina Medina-Plaza
- Department of Viticulture and Enology, University of California-Davis, 595 Hilgard Ln, Davis, CA 95616, USA.
| | - Aubrey DuBois
- Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331, USA; Department of Food Science & Human Nutrition, Michigan State University, East Lansing, MI 48823, USA
| | - Elizabeth Tomasino
- Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331, USA
| | - Anita Oberholster
- Department of Viticulture and Enology, University of California-Davis, 595 Hilgard Ln, Davis, CA 95616, USA.
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Liu Z, Wang H, Zhang J, Chen Q, He W, Zhang Y, Luo Y, Tang H, Wang Y, Wang X. Comparative metabolomics profiling highlights unique color variation and bitter taste formation of Chinese cherry fruits. Food Chem 2024; 439:138072. [PMID: 38043274 DOI: 10.1016/j.foodchem.2023.138072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/24/2023] [Accepted: 11/21/2023] [Indexed: 12/05/2023]
Abstract
Chinese cherry [Cerasus pseudocerasus (Lindl.) G.Don], native to China, is an economically important fruit crop with attractive colors and delicious flavors. However, the specific metabolites present in cherry fruits have remained unknown. Here, we firstly characterized 1439 metabolite components of Chinese cherry fruits, predominantly including amino acids, flavonoids, and phenolic acids. Moreover, we screened ten biomarkers of Chinese cherry accessions by ROC curve analysis. Among 250 flavonoids, 26 structurally unique anthocyanins collectively determined fruit color, with cyanidins playing a dominant role. Differences in accumulated metabolites between anthocyanin and proanthocyanidin pathways were likely responsible for the variation in fruit color, ranging from yellow to black purple. Meanwhile, we found limocitrin-7-O-glucoside, along with eight other compounds, as underlying contributors to bitter off-taste experienced in fruits. This study provides insights into the regulatory network of metabolites involved in color variation and bitterness formation and genetic improvement of Chinese cherry fruits.
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Affiliation(s)
- Zhenshan Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Hao Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Jing Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Qing Chen
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Chengdu, Sichuan 611130, China.
| | - Wen He
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Chengdu, Sichuan 611130, China
| | - Yong Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Ya Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Haoru Tang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
| | - Yan Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Chengdu, Sichuan 611130, China.
| | - Xiaorong Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; Key Laboratory of Agricultural Bioinformatics, Ministry of Education, Chengdu, Sichuan 611130, China.
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Keefe MS, Luk HY, Rolloque JJS, Jiwan NC, McCollum TB, Sekiguchi Y. The weight, urine colour and thirst Venn diagram is an accurate tool compared with urinary and blood markers for hydration assessment at morning and afternoon timepoints in euhydrated and free-living individuals. Br J Nutr 2024; 131:1181-1188. [PMID: 38012859 PMCID: PMC10918520 DOI: 10.1017/s000711452300274x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/03/2023] [Accepted: 11/20/2023] [Indexed: 11/29/2023]
Abstract
The weight, urine colour and thirst (WUT) Venn diagram is a practical hydration assessment tool; however, it has only been investigated during first-morning. This study investigated accuracy of the WUT Venn diagram at morning and afternoon timepoints compared with blood and urine markers. Twelve men (21 ± 2 years; 81·0 ± 15·9 kg) and twelve women (22 ± 3 years; 68·8 ± 15·2 kg) completed the study. Body mass, urine colour, urine specific gravity (USG), urine osmolality (UOSM), thirst and plasma osmolality (POSM) were collected at first-morning and afternoon for 3 consecutive days in free-living (FL) and euhydrated states. Number of markers indicating dehydration levels were categorised into either 3, 2, 1 or 0 WUT markers. Receiver operating characteristics analysis calculated the sensitivity and specificity of 1, 2 or 3 hydration markers in detecting dehydration or euhydration. Specificity values across morning and afternoon exhibited high diagnostic accuracy for USG (0·890-1·000), UOSM (0·869-1·000) and POSM (0·787-0·990) when 2 and 3 WUT markers were met. Sensitivity values across both timepoints exhibited high diagnostic accuracy for USG (0·826-0·941) and UOSM (0·826-0·941), but not POSM in the afternoon (0·324) when 0 and 1 WUT markers were met. The WUT Venn diagram is accurate in detecting dehydration for WUT2 and WUT3 based off USG, UOSM and POSM during first-morning and afternoon. Applied medical, sport and occupational practitioners can use this tool in field settings for hydration assessment not only at various timepoints throughout the day but also in FL individuals.
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Affiliation(s)
- Marcos S. Keefe
- Sports Performance Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX79407, USA
| | - Hui-Ying Luk
- Applied Physiology Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Jan-Joseph S. Rolloque
- Sports Performance Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX79407, USA
| | - Nigel C. Jiwan
- Applied Physiology Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Tyler B. McCollum
- Sports Performance Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX79407, USA
| | - Yasuki Sekiguchi
- Sports Performance Laboratory, Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX79407, USA
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Friedman NR, Remeš V. Dorsal and Ventral Plumage Coloration Evolve as Distinct Modules with Different Environmental Correlations. Am Nat 2024; 203:528-534. [PMID: 38489773 DOI: 10.1086/728766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
AbstractMany animals exhibit contrast between their dorsal coloration and their ventral coloration. If selection acts differently on dorsal versus ventral coloration, ancestral covariance between these traits should break down, eventually leading to independent modules of trait evolution. Here, we compare the evolution of feather color across body regions for a clade of Australasian songbirds (Meliphagoidea). We find evidence for three modules of covarying color regions. Among these modules, ventral feathers evolve with high lability, evolving at three times the rate of dorsal plumage and 20 times the rate of flight feathers. While both dorsal plumage and ventral plumage are darker in areas with more precipitation and vegetation, we find that dorsal plumage is twice as similar to colors in satellite photos of background substrates. Overall, differential selection on ventral and dorsal colors likely maintains these as distinct modules over evolutionary timescales-a novel explanation for dorsoventral contrast in pigmentation.
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Morel LL, de Holanda GA, Perroni AP, de Moraes RR, Boscato N. Effect of shade and opacity on color differences and translucency of resin composite veneers over lighter and darker substrates. Odontology 2024; 112:355-363. [PMID: 37589926 DOI: 10.1007/s10266-023-00842-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/20/2023] [Indexed: 08/18/2023]
Abstract
To evaluate color differences (ΔE00) and translucency parameters (TP) from mono, bi, and trilayer resin composite veneers using different opacities and shades of resin composite over lighter and darker simulated tooth-colored substrates. Mono, bi, and trilayer veneers (1.5 mm) (n = 12) were made using two shades (A1 and A2) and three opacities (enamel, body, and dentin) of resin composite over simulated lighter (A1) and darker (C4, and C4+) tooth-colored substrates. CIEDE2000 formula was used to calculate ΔE00 considering simulated tooth-colored substrate versus opacities in distinct mono, bi, and trilayer combinations of resin composite over the simulated tooth-colored substrate. The TP was calculated using color coordinates measured over standard white and black backgrounds. Differences in ΔE00 and TP values were calculated with a Three-way Analysis of Variance followed by Tukey's post-hoc test. A1E and A1B monolayer veneers showed similar TP values. Significantly higher ΔE00 values were observed over darker (C4 and C4+), and lower over lighter (A1) simulated tooth-colored substrate. Bilayer and trilayer veneers using dentin opacity provided similar ΔE00 values over the darker tooth-colored substrate. Distinct shades and opacities of resin composite layer combinations over lighter and darker tooth-colored substrates significantly affected TP and ΔE00 values. A1 shade and dentin opacity of monolayer resin composite veneers yielded higher ΔE00 values over darker tooth-colored substrates.
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Affiliation(s)
| | | | | | | | - Noéli Boscato
- Universidade Federal de Pelotas, Pelotas, RS, Brazil.
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8
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Tsaregorodtseva O, Frazier L, Stolterfoht B, Kaup B. Do linguistic stimuli activate experiential colour traces related to the entities they refer to and, if so, under what circumstances? Q J Exp Psychol (Hove) 2024; 77:694-715. [PMID: 37649148 PMCID: PMC10960311 DOI: 10.1177/17470218231200489] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 03/02/2023] [Accepted: 05/09/2023] [Indexed: 09/01/2023]
Abstract
The simulation view of language comprehension holds that lexical-semantic access prompts the re-enactment of sensorimotor experiences that regularly accompany word use. For the colour domain, this suggests that reading about a stop sign reactivates experiences involving the perception of the stop sign and hence experiences involving the colour red. However, it is still not clear what circumstances would limit reactivation of colour experiences during comprehension, if the activation takes place. To address this question, we varied in our study the conditions in which the target colour stimuli appeared. The experimental stimuli were individual words (Experiment (Exp.) 1, Exp. 7, 8) or sentences (Exp. 2-6) referring to objects with a typical colour of either green or red (e.g., cucumber or raspberry). Across experiments, we manipulated the presence of fillers (present or not), and whether fillers referred to objects with other colour (e.g., honey) or objects without any particular colour (e.g., car). The stimuli were presented along with two clickable "yes" and "no" buttons, one of which was red and the other green. Location and button colour varied from trial to trial. The tasks were lexical decision (Exp. 1, Exp. 7-8) and sensibility judgement (Exp. 2-6). We observed faster response times in the match vs mismatch condition in all word-based experiments, but only in those sentence-based experiments that did not have fillers. This suggests that comprehenders indeed reactivate colour experiences when processing linguistic stimuli referring to objects with a typical colour, but this activation seems to occur only under certain circumstances.
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Affiliation(s)
- Oksana Tsaregorodtseva
- Department of Psychology, Language and Cognition Research Group, University of Tübingen, Tubingen, Germany
| | - Lyn Frazier
- Department of Linguistics, University of Massachusetts Amherst, Amherst, MA, USA
| | | | - Barbara Kaup
- Department of Psychology, Language and Cognition Research Group, University of Tübingen, Tubingen, Germany
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Fidan M, Yağci Ö. Effect of aging and fiber-reinforcement on color stability, translucency, and microhardness of single-shade resin composites versus multi-shade resin composite. J ESTHET RESTOR DENT 2024; 36:632-642. [PMID: 37622399 DOI: 10.1111/jerd.13125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/23/2023] [Accepted: 08/07/2023] [Indexed: 08/26/2023]
Abstract
OBJECTIVE The purpose of this study was to evaluate the effect of aging and fiber-reinforcement on the color stability, translucency, and microhardness of single-shade resin composites versus multi-shade resin composite. MATERIALS AND METHODS Four resin composites (Filtek Z250, Omnichroma, Vittra APS Unique, Zenchroma) were tested. Three subgroups of specimens were prepared for each of the composites: control, polyethylene fiber-reinforcement, and glass fiber-reinforcement- groups (n = 10/per group). The samples were subjected to aging for 10,000 thermal cycles. Color differences (ΔE00 ) were calculated after aging. Relative translucency parameter (RTP00 ) and microhardness values were calculated before and after aging. A two-way analysis of variance and the generalized linear model was used (p < 0.05). RESULTS The lowest and highest ΔE00 values were found for Filtek Z250 (0.6 ± 0.2) and Omnichroma resin composites (1.6 ± 0.4), respectively. The ΔE00 value of the polyethylene fiber-reinforcement group (1.2 ± 0.6) was significantly higher than the ΔE00 value of the glass fiber-reinforcement group (1.0 ± 0.4, p < 0.001). The RTP00 value of the glass fiber-reinforcement group (1.92 ± 0.78) was significantly higher than the RTP00 value of the polyethylene fiber-reinforcement group (1.72 ± 0.77, p < 0.001). The highest microhardness values were found in glass fiber-reinforcement group (76.48 ± 17.07, p < 0.001). CONCLUSION Single-shade resin composites were more translucent, had higher color change, and lower hardness than multi-shade resin composite. For relative translucency and microhardness, statistical significance was found in the material and fiber type interaction. The glass fiber-reinforcement provided higher translucency, lower color change and higher microhardness values than polyethylene fiber-reinforcement group after aging. Thermocycling had a significant impact on the color stability, translucency parameter, and microhardness of the tested resin composite materials. CLINICAL SIGNIFICANCE Single-shade resin composite materials have greater color-changing potential. The glass fiber-reinforcement optimize resin material mechanical properties and color stability more than polyethylene fiber-reinforcement.
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Affiliation(s)
- Muhammet Fidan
- Department of Restorative Dentistry, Faculty of Dentistry, Usak University, Usak, Turkey
| | - Özhan Yağci
- Department of Restorative Dentistry, Faculty of Dentistry, Usak University, Usak, Turkey
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Xu Y, Zhu XY, Feng H, Yu XP, Wang Y, Rong X, Qi TY. The value of quantitative contrast-enhanced ultrasonography analysis in evaluating central retinal artery microcirculation in patients with diabetes mellitus: comparison with colour Doppler imaging. Clin Radiol 2024; 79:e560-e566. [PMID: 38336532 DOI: 10.1016/j.crad.2024.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/12/2023] [Accepted: 01/12/2024] [Indexed: 02/12/2024]
Abstract
AIM To compare the efficacy of quantitative contrast-enhanced ultrasonography (CEUS) analysis and colour Doppler ultrasound (CDU) in evaluating central retinal artery (CRA) microcirculation in patients with diabetes mellitus (DM). MATERIALS AND METHODS In this prospective study, a total of 55 patients (98 eyes) with DM were enrolled as the study group. They were compared to 46 age-matched healthy volunteers (92 eyes) who were selected as the control group. Each patient underwent CDU and subsequent CEUS examination. CDU and quantitative CEUS parameters were evaluated. The diagnostic efficiency of the diagnostic performance of CEUS and CDU was evaluated and compared, and the scale thresholds of predictive indicators for the diagnosis of proliferative diabetic retinopathy (PDR) were evaluated using receiver operating characteristics (ROC) curve analyses. RESULTS Group pairwise comparisons showed that the end diastolic velocity (EDV) and arrival time (AT) of CRA were significant predictors for PDR by CDU and by quantitative CEUS analysis, respectively (all p<0.05). The ROC curve analysis showed that the area under the curve value of AT was significantly higher than that of EDV (0.875 versus 0.634, p=0.0002). Accordingly, an AT cut-off value of 1.07 seconds resulted a sensitivity of 90.62 % and a specificity of 79.31 %. CONCLUSION Quantitative CEUS analysis can improve the accuracy of clinical staging of diabetic retinopathy for the patients with DM, and the AT showed the best diagnostic efficiency.
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Affiliation(s)
- Y Xu
- Department of Ultrasound, Medical Imaging Center, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, 225012, China
| | - X Y Zhu
- Department of Ophthalmology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, 225012, China
| | - H Feng
- Department of Ultrasound, Medical Imaging Center, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, 225012, China
| | - X P Yu
- Department of Ultrasound, Medical Imaging Center, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, 225012, China
| | - Y Wang
- Department of Ophthalmology, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, 225012, China
| | - X Rong
- Department of Ultrasound, Medical Imaging Center, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, 225012, China
| | - T Y Qi
- Department of Ultrasound, Medical Imaging Center, Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, 225012, China.
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Chen S, Zhu J, Yu M, Jin C, Huang C. Effect of aging and bleaching on the color stability and surface roughness of a recently introduced single-shade composite resin. J Dent 2024; 143:104917. [PMID: 38431188 DOI: 10.1016/j.jdent.2024.104917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 03/05/2024] Open
Abstract
OBJECTIVES To assess the effects of aging and bleaching procedures on the color stability and surface roughness of a new single-shade composite versus multi-shade composite resins. METHODS A single-shade composite resin (Charisma Diamond One, CDO) and 3 multi-shade composite resins (Tetric NCeram, Filtek Z350 XT, Clearfil Majesty Posterior) were tested. Thirty specimens of each material were subjected to one of the aging procedures respectively: immersion in distilled water (12 days/37 °C), immersion in coffee (12 days/37 °C), or water thermocycling (10,000 cycles/5-55 °C). All specimens underwent in-office bleaching after aging. Kruskal-Wallis tests and analysis of variance were used for statistical analysis (α=0.05). RESULTS All materials exhibited a change of color (ΔE00), translucency (RTP), whiteness (WID) and surface roughness parameters (Sa,Sv) after aging and bleaching procedures. CDO showed the highest ΔE00 among all resins with the highest RTP value, regardless of the aging procedures. Immersion in coffee led to the significantly highest ∆E00 values and lowest RTP values for nearly all resins. Positive ΔWID1 (WID(bleaching)-WID(baseline)) values were found in distilled water immersion and thermocycling groups, while negative ΔWID1 values were found in the coffee immersion group for all materials. Besides, positive ΔWID2 (WID(bleaching)-WID(aging)) values were found in all aging groups for nearly all materials. All materials showed an increasing trend in Sa and Sv after bleaching. CONCLUSIONS CDO showed more pronounced discoloration than multi-shade composite resins. Although the whiteness of all resins increased after bleaching, none was completely restored in the coffee immersion group. Bleaching significantly increased the surface roughness of all materials. CLINICAL SIGNIFICANCE Charisma Diamond One is more susceptible to discoloration, which may affect its long-term success rate. Bleaching could partially reduce the color change of the composite resins but did not return them completely to their original state. The roughness of the resins increased after bleaching, prompting dentists to repolish them after bleaching.
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Affiliation(s)
- Siyang Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China
| | - Jiakang Zhu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China
| | - Miaoyang Yu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China
| | - Chunxiao Jin
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China
| | - Cui Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China.
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12
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Denzer ML, Piao D, Pfeiffer M, Mafi G, Ramanathan R. Novel needle-probe single-fiber reflectance spectroscopy to quantify sub-surface myoglobin forms in beef psoas major steaks during retail display. Meat Sci 2024; 210:109439. [PMID: 38295670 DOI: 10.1016/j.meatsci.2024.109439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/14/2024] [Accepted: 01/22/2024] [Indexed: 02/07/2024]
Abstract
Meat discoloration starts at the interface between the bright red oxymyoglobin layer and the interior deoxymyoglobin layer. Currently, limited tools are available to characterize myoglobin forms formed within the sub-surface of meat. The objective was to demonstrate a needle-probe based single-fiber reflectance (SfR) spectroscopy approach for characterizing sub-surface myoglobin forms of beef psoas major muscles during retail storage. A 400-μm fiber was placed in a 17-gauge needle, and the assembly was inserted into the muscle at five depths of 1 mm increment and 1 cm lateral shift. Metmyoglobin content increased at all depths during display and content at 1 mm was greater compared to that of 2 to 5 mm depth. The a* values decreased (P < 0.05) during retail display aligning with the sub-surface formation of metmyoglobin. In summary, the results suggest that needle-probe SfR spectroscopy can determine interior myoglobin forms and characterize meat discoloration.
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Affiliation(s)
- Morgan L Denzer
- Department of Food and Animal Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Daqing Piao
- School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078, USA
| | - Morgan Pfeiffer
- Department of Food and Animal Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Gretchen Mafi
- Department of Food and Animal Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Ranjith Ramanathan
- Department of Food and Animal Sciences, Oklahoma State University, Stillwater, OK 74078, USA.
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13
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Julião M, Cruz M. The color purple: Purple urine bag syndrome: Identifying the phenomenon to ease unnecessary anxiety, fear, and distress. Palliat Support Care 2024; 22:424-426. [PMID: 37435644 DOI: 10.1017/s1478951523000949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
OBJECTIVES Purple urine bag syndrome (PUBS) is a condition that causes an intense purple discoloration of the urine, predominately in frail, dependent, and bedridden persons who are chronically catheterized and have urinary tract infections. Despite being considered a benign syndrome, PUBS can cause great anxiety, fear, and distress in health professionals, chronically ill persons, and caregivers or family members who provide care. METHODS We report the case of a 98-year-old institutionalized woman with Alzheimer's dementia with a long-term urinary catheter who developed PUBS. RESULTS Although alarming and distressing for the resident and the health-care team, PUBS was resolved by treating the underlying urinary tract infection and applying good genital hygiene and catheter replacement. SIGNIFICANCE OF RESULTS Identifying PUBS and its clinical features and management proved to be significantly helpful in ameliorating the anxiety, fear, and distress around the phenomenon.
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Affiliation(s)
- Miguel Julião
- Equipa Comunitária de Suporte em Cuidados Paliativos de Sintra, Sintra, Portugal
- Inválidos do Comércio IPSS, Lisboa, Portugal
| | - Mário Cruz
- Inválidos do Comércio IPSS, Lisboa, Portugal
- Escola de Psicologia e Ciências da Vida, Universidade Lusófona, Lisboa, Portugal
- USF Tapada, ACeS Sintra, Sintra, Portugal
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14
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Sun M, Gao X. Rapid color categorization revealed by frequency-tagging-based EEG. Vision Res 2024; 217:108365. [PMID: 38368707 DOI: 10.1016/j.visres.2024.108365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 09/08/2023] [Accepted: 01/25/2024] [Indexed: 02/20/2024]
Abstract
There has been much debate on whether color categories affect how we perceive color. Recent theories have put emphasis on the role of top-down influence on color perception that the original continuous color space in the visual cortex may be transformed into categorical encoding due to top-down modulation. To test the influence of color categories on color perception, we adopted an RSVP paradigm, where color stimuli were presented at a fast speed of 100 ms per stimulus and were forward and backward masked by the preceding and following stimuli. Moreover, no explicit color naming or categorization was required. In theory, backward masking with such a short interval in a passive viewing task should constrain top-down influence from higher-level brain areas. To measure any potentially subtle differences in brain response elicited by different color categories, we embedded a sensitive frequency-tagging-based EEG paradigm within the RSVP stimuli stream where the oddball color stimuli were encoded with a different frequency from the base color stimuli. We showed that EEG responses to cross-category oddball colors at the frequency where the oddball stimuli were presented was significantly larger than the responses to within-category oddball colors. Our study suggested that the visual cortex can automatically and implicitly encode color categories when color stimuli are presented rapidly.
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Affiliation(s)
- Mengdan Sun
- Department of Psychology, Soochow University, Suzhou, China
| | - Xiaoqing Gao
- Center for Psychological Sciences, Zhejiang University, Hangzhou, China.
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15
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Candan M, Ünal M. The effect of various inhaled asthma medications on the color stability of paediatric dental restorative materials. BMC Oral Health 2024; 24:384. [PMID: 38528493 DOI: 10.1186/s12903-024-04118-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 03/07/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND The purpose of the study is to analyse the effects of different inhaled asthma medications (IAMs) on the color change of dental restorative materials (DRMs). METHODS In total, 192 samples were taken from six different DRMs: [Filtek Z550 (nanohybrid composite), Fusio Liquid Dentin (Self-adhering flowable composite), Filtek Ultimate (nanofilled flowable composite), Dyract XP (compomer), Fuji II LC (resin-modified glass ionomer), Fuji IX Fast (self-cured-packable glass ionomer), (n = 32)]. After the initial color values (CIELab) of DRMs were measured by using a spectrophotometer, each sample was exposed to the same IAMs via nebulizer according to the four different inhaled therapies and measurements were repeated on the 7th & 21st days. RESULTS In all IAM groups, DRM with the least amount of ΔE was nanohybrid composite, while the highest ΔE was found in Fuji II LC. Among all experimental groups, only Fuji II LC which was administered the combined medication, exceeded the clinically unacceptable threshold (ΔE = 3.3) on 7th & 21st days. CONCLUSIONS Consequently, important factors affecting the susceptibility to color stability are the type of IAMs, the administration time-dosage, and the type of DRMs.
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Affiliation(s)
- Merve Candan
- Department of Paediatric Dentistry, Faculty of Dentistry, Eskişehir Osmangazi University, Eskişehir, Turkey.
| | - Murat Ünal
- Department of Paediatric Dentistry, Faculty of Dentistry, Sivas Cumhuriyet University, Sivas, Turkey
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16
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Wallis NJ, Sumanasekera NT, Raffan E. Obesity risk factors in British Labrador retrievers: Effect of sex, neuter status, age, chocolate coat colour and food motivation. Vet Rec 2024; 194:e3410. [PMID: 37747436 DOI: 10.1002/vetr.3410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 08/11/2023] [Accepted: 08/17/2023] [Indexed: 09/26/2023]
Abstract
BACKGROUND Canine obesity is a complex disease affected by genetic, endocrine and environmental factors. It is associated with reduced lifespan and many comorbidities. Prevalence differs by breed, with Labrador retrievers at high risk. Past data on how biological risk factors impact weight gain have been contradictory, possibly because they were obtained from genetically heterogeneous populations. METHODS We investigated risk factors for canine obesity in a population of British Labrador retrievers (n = 521) with high-quality data on obesity, weight, owner-reported food motivation and related characteristics. We used linear regression to assess known and novel risk factors for obesity. RESULTS We found that neutering increased obesity in males (p < 0.001) but not females (p = 0.37). Older age was associated with obesity in female Labradors (p = 0.013) but not males (p = 0.49). We identified two new risk factors for obesity in Labrador retrievers: chocolate coat colour (p < 0.001) and high food motivation (p < 0.001). LIMITATIONS Strategic recruitment to collect both obese and lean dogs means this cohort is not suitable for assessing obesity prevalence in UK Labrador retrievers. CONCLUSION Studying this genetically homogeneous population informs our knowledge of common risk factors for obesity and expands those relevant to Labrador retrievers.
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Affiliation(s)
- Natalie J Wallis
- Department of Physiology, Development, and Neuroscience, University of Cambridge, Cambridge, UK
| | - Natasha T Sumanasekera
- Department of Physiology, Development, and Neuroscience, University of Cambridge, Cambridge, UK
| | - Eleanor Raffan
- Department of Physiology, Development, and Neuroscience, University of Cambridge, Cambridge, UK
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17
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Affiliation(s)
- Bao-Ping Xu
- Anhui University of Traditional Chinese Medicine, Lu'an, China
| | - Xiao-Tao Wang
- Ehu Branch of Xishan People's Hospital of Wuxi City, Wuxi, China
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18
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Twomey CR, Brainard DH, Plotkin JB. History constrains the evolution of efficient color naming, enabling historical inference. Proc Natl Acad Sci U S A 2024; 121:e2313603121. [PMID: 38416682 DOI: 10.1073/pnas.2313603121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 12/16/2023] [Indexed: 03/01/2024] Open
Abstract
Color naming in natural languages is not arbitrary: It reflects efficient partitions of perceptual color space [T. Regier, P. Kay, N. Khetarpal, Proc. Natl. Acad. Sci. U.S.A. 104, 1436-1441 (2007)] modulated by the relative needs to communicate about different colors [C. Twomey, G. Roberts, D. Brainard, J. Plotkin, Proc. Natl. Acad. Sci. U.S.A. 118, e2109237118 (2021)]. These psychophysical and communicative constraints help explain why languages around the world have remarkably similar, but not identical, mappings of colors to color terms. Languages converge on a small set of efficient representations.But languages also evolve, and the number of terms in a color vocabulary may change over time. Here we show that history, i.e. the existence of an antecedent color vocabulary, acts as a nonadaptive constraint that biases the choice of efficient solution as a language transitions from a vocabulary of size [Formula: see text] to [Formula: see text] terms. Moreover, as efficient vocabularies evolve to include more terms they explore a smaller fraction of all possible efficient vocabularies compared to equally sized vocabularies constructed de novo. This path dependence of the cultural evolution of color naming presents an opportunity. Historical constraints can be used to reconstruct ancestral color vocabularies, allowing us to answer long-standing questions about the evolutionary sequences of color words, and enabling us to draw inferences from phylogenetic patterns of language change.
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Affiliation(s)
- Colin R Twomey
- Data Driven Discovery Initiative, University of Pennsylvania, Philadelphia, PA 19104
- Department of Biology, University of Pennsylvania, Philadelphia, PA 19104
| | - David H Brainard
- Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104
| | - Joshua B Plotkin
- Department of Biology, University of Pennsylvania, Philadelphia, PA 19104
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de Oliveira MN, Vidigal MTC, Vieira W, Lins-Candeiro CL, Oliveira LM, Nascimento GG, da Silva GR, Paranhos LR. Assessment of color changes and adverse effects of over-the-counter bleaching protocols: a systematic review and network meta-analysis. Clin Oral Investig 2024; 28:189. [PMID: 38430338 DOI: 10.1007/s00784-024-05595-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 02/28/2024] [Indexed: 03/03/2024]
Abstract
OBJECTIVES To assess color change efficacy and the adverse effects of varied over-the-counter (OTC) bleaching protocols. METHODOLOGY The study included randomized clinical trials evaluating color changes from OTC bleaching agents. Nine databases were searched, including the partial capture of the grey literature. The RoB2 tool analyzed the individual risk of bias in the studies. Frequentist network meta-analyses compared treatments through common comparators (∆Eab* and ∆SGU color changes, and tooth sensitivity), integrating direct and indirect estimates and using the mean and risk differences as effect measures with respective 95% confidence intervals. The GRADE approach assessed the certainty of the evidence. RESULTS Overall, 37 remaining studies constituted the qualitative analysis, and ten composed the meta-analyses. The total sample included 1,932 individuals. ∆Eab* was significantly higher in groups 6% hydrogen peroxide (HP) strips (≥ 14 h). ∆SGU was significantly higher in groups at-home 10% carbamide peroxide (CP) (≥ 14 h), followed by 6% HP strips (≥ 14 h) and 3% HP strips (≥ 14 h). At-home 10% CP (7-13 h) and placebo showed lower risks of tooth sensitivity without significant differences between these treatments. CONCLUSION Considering the low level of evidence, OTC products presented satisfactory short-term effects on tooth bleaching compared to the placebo, with little to no impact on dentin hypersensitivity and gingival irritation. CLINICAL RELEVANCE OTC products are proving to be practical alternatives for tooth whitening. However, patients should be advised about the possible risks of carrying out such procedures without professional supervision.
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Affiliation(s)
- Murilo Navarro de Oliveira
- School of Dentistry, University Center-UNIFAE, São João da Boa Vista, SP, Brazil
- Postgraduate Program in Dentistry, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Maria Tereza Campos Vidigal
- Postgraduate Program in Dentistry, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Walbert Vieira
- Division of Endodontics, Department of Restorative Dentistry, School of Dentistry, State University of Campinas, Piracicaba, SP, Brazil
| | - Caio Luiz Lins-Candeiro
- Postgraduate Program in Dentistry, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Leandro Machado Oliveira
- Department of Stomatology, Postgraduate Program in Dentistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Gustavo G Nascimento
- Duke-NUS Medical School, Oral Health Academic Programme, Singapore, Singapore
- Dental Research Institute Singapore, National Dental Centre Singapore, Singapore, Singapore
| | - Gisele Rodrigues da Silva
- Department of Operative Dentistry and Dental Materials, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Luiz Renato Paranhos
- Department of Preventive and Community Dentistry, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil.
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Sasany R, Donmez MB, de Paula MS, Kahveci Ç, Ceylan G, Yilmaz B, Çakmak G. Stainability and translucency of potassium aluminum sulfate applied computer-aided design and computer-aided manufacturing materials after coffee thermocycling. J ESTHET RESTOR DENT 2024; 36:477-483. [PMID: 37877244 DOI: 10.1111/jerd.13154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 10/04/2023] [Accepted: 10/09/2023] [Indexed: 10/26/2023]
Abstract
OBJECTIVE The purpose of this in vitro study was to evaluate the effect of potassium aluminum sulfate (alum) application on the stainability and translucency of computer-aided design and computer-aided manufacturing (CAD-CAM) materials after coffee thermocycling (CTC). MATERIALS AND METHODS Disk-shaped specimens (Ø10 × 1 mm; N = 200) were fabricated by using additively (Crowntec [CT] and Varseo Smile Crown Plus [VS]) and subtractively manufactured (Brilliant Crios [RCR], CEREC Block [FC], and Vita Enamic [VE]) CAD-CAM materials and polished. All specimens were randomly divided into two groups as alum applied and control (n = 10). All specimens were then subjected to CTC (10,000 cycles at 5-55°C) and color coordinates were measured at each time interval. Color differences (ΔE00 ) and relative translucency parameters (RTPs) were calculated and the data were statistically analyzed (a = 0.05). RESULTS Among tested time intervals, alum applied specimens had their lowest ΔE00 after alum application (p ≤ 0.006), except for FC (p = 0.177). In addition, alum applied RCR had lower ΔE00 values than its control specimens (p = 0.029). Alum applied specimens had their lowest RTP after CTC (p < 0.001) and alum application decreased the RTP of CT (p = 0.010). CTC reduced the RTP of all materials in control groups (p < 0.001). Alum applied CT had higher RTP than its control specimens (p = 0.049). CONCLUSIONS Alum application's effect on color change varied depending on the material and alum mostly resulted in clinically acceptable changes in translucency. CTC led to unacceptable color and translucency changes based on previously reported threshold values. CLINICAL SIGNIFICANCE Optical properties of CAD-CAM materials and the sustainability of these properties over time is critical for longevity. Alum may improve the color stability of reinforced composite resin when subjected to long-term coffee consumption.
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Affiliation(s)
- Rafat Sasany
- Department of Prosthodontics, Faculty of Dentistry, Biruni University, İstanbul, Turkey
| | - Mustafa Borga Donmez
- Department of Prosthodontics, Faculty of Dentistry, Istinye University, İstanbul, Turkey
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Marcella Silva de Paula
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Department of Prevention and Oral Rehabilitation, Universidade Federal de Goiás (UFG), Goiânia, Brazil
| | | | - Gözlem Ceylan
- Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey
| | - Burak Yilmaz
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
- Division of Restorative and Prosthetic Dentistry, The Ohio State University, Columbus, Ohio, USA
| | - Gülce Çakmak
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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Gómez-Polo C, Fraile JF, López NQ, Muñoz MP, Lobato M, Montero J. Three-dimensional representation of the Vita Toothguide 3D-Master: An in vivo clinical study. J ESTHET RESTOR DENT 2024; 36:421-428. [PMID: 38053482 DOI: 10.1111/jerd.13173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 10/21/2023] [Accepted: 11/09/2023] [Indexed: 12/07/2023]
Abstract
STATEMENT OF PROBLEM The Vita Toothguide 3D-Master (Vita Zahnfabrik) is considered the dental shade guide in which the three dimensions of color - lightness, hue, and chroma - are most well-ordered in the CIELAB color space. No research has yet explored how well the Vita Toothguide 3D-Master is ordered in the 3D color space by recording color coordinates in vivo. PURPOSE To evaluate the spatial color distribution of the Vita Toothguide 3D-Master's lightness, chroma, and hue groups and its 26 physical shade tabs. MATERIALS AND METHODS The dental color (L*, C*, h°, a*, and b* color coordinates) of a healthy maxillary central incisor was recorded for 1361 participants (aged between 18 and 89 years) using a Vita Easyshade Compact spectrophotometer (Vita Zahnfabrik). The R 2.7.2. statistics program was used to create the visual representations. RESULTS The five lightness levels are those that are best distributed in the color space, in relation to the L* coordinates, followed by the chroma group and, finally, the hue group. The 5M1, 5M2, and 5M3 physical shade tabs are situated at a greater distance apart from the other tabs in the color space. CONCLUSIONS The Vita Toothguide 3D-Master's 26 physical shade tabs are satisfactorily distributed in three-dimensional space, although strict mathematical criteria are not followed. The natural dental shades that fall lower on the lightness scale are the most poorly represented by the physical shade tabs. CLINICAL IMPLICATIONS Darker teeth are poorly represented by the Vita Toothguide 3D-Master's physical shade tabs. The spatial distribution of dental shade guides needs to be improved to ensure they provide homogeneous coverage of the entire chromatic spectrum corresponding to natural teeth. This would help reduce the errors inherent to the subjective visual color selection process.
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Affiliation(s)
- Cristina Gómez-Polo
- Department of Surgery, School of Medicine, University of Salamanca, Salamanca, Spain
| | - Javier Flores Fraile
- Department of Surgery, School of Medicine, University of Salamanca, Salamanca, Spain
| | - Norberto Quispe López
- Department of Surgery, School of Medicine, University of Salamanca, Salamanca, Spain
| | - Maria Portillo Muñoz
- Department of Surgery, School of Medicine, University of Salamanca, Salamanca, Spain
| | - Maria Lobato
- Department of Surgery, School of Medicine, University of Salamanca, Salamanca, Spain
| | - Javier Montero
- Department of Surgery, School of Medicine, University of Salamanca, Salamanca, Spain
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22
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Polic D, Yıldırım Y, Merilaita S, Franzén M, Forsman A. Genetic structure, UV-vision, wing coloration and size coincide with colour polymorphism in Fabriciana adippe butterflies. Mol Ecol 2024; 33:e17272. [PMID: 38240162 DOI: 10.1111/mec.17272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 12/18/2023] [Accepted: 01/08/2024] [Indexed: 02/22/2024]
Abstract
Colour polymorphisms have long served as model systems in evolutionary studies and continue to inform about processes involved in the origin and dynamics of biodiversity. Modern sequencing tools allow for evaluating whether phenotypic differences between morphs reflect genetic differentiation rather than developmental plasticity, and for investigating whether polymorphisms represent intermediate stages of diversification towards speciation. We investigated phenotypic and genetic differentiation between two colour morphs of the butterfly Fabriciana adippe using a combination of ddRAD-sequencing and comparisons of body size, colour patterns and optical properties of bright wing spots. The silvery-spotted adippe form had larger and darker wings and reflected UV light, while the yellow cleodoxa form displayed more green scales and reflected very little UV, showcasing that they constitute distinct and alternative integrated phenotypes. Genomic analyses revealed genetic structuring according to source population, and to colour morph, suggesting that the phenotypic differentiation reflects evolutionary modifications. We report 17 outlier loci associated with colour morph, including ultraviolet-sensitive visual pigment (UVRh1), which is associated with intraspecific communication and mate choice in butterflies. Together with the demonstration that the wings of the adippe (but essentially not the cleodoxa) morph reflect UV light, that UV reflectance is higher in females than males and that morphs differ in wing size, this suggests that these colour morphs might represent genetically integrated phenotypes, possibly adapted to different microhabitats. We propose that non-random mating might contribute to the differentiation and maintenance of the polymorphism.
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Affiliation(s)
- Daniela Polic
- Department of Biology and Environmental Science, Linnaeus University, Kalmar, Sweden
| | - Yeşerin Yıldırım
- Department of Biology and Environmental Science, Linnaeus University, Kalmar, Sweden
| | - Sami Merilaita
- Department of Biology, University of Turku, Turku, Finland
| | - Markus Franzén
- Department of Biology and Environmental Science, Linnaeus University, Kalmar, Sweden
| | - Anders Forsman
- Department of Biology and Environmental Science, Linnaeus University, Kalmar, Sweden
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Tejada-Casado M, Pérez MM, Della Bona A, Lübbe H, Ghinea R, Herrera LJ. Chroma-dependence of CIEDE2000 acceptability thresholds for dentistry. J ESTHET RESTOR DENT 2024; 36:469-476. [PMID: 37861306 DOI: 10.1111/jerd.13153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/25/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023]
Abstract
OBJECTIVES Determine visual 50:50% color difference acceptability thresholds (AT) for regions of the dental color space with varying chromaticity. METHODS A 40-observer panel belonging to two different groups (dentists and laypersons) evaluated 144 dental resin composites pairs (divided in three different sets of 48 pairs according to chroma value: Low Chroma (LC), Medium Chroma (MC) and High Chroma (HC) placed 40 cm away and inside of a viewing cabinet (D65 Standard light source; diffuse/0° geometry). A Takagi-Sugeno-Kang (TSK) fuzzy approximation was used for fitting the data points and calculate the 50:50% acceptability thresholds in CIEDE2000. A paired t-test was used to evaluate the statistical significance between thresholds differences and Bonferroni correction was applied. RESULTS The CIEDE2000 50:50% AT were ∆E00 = 2.84, ∆E00 = 2.31 and ∆E00 = 1.80 for LC, MC and HC sets of sample pairs, respectively. The 50:50% AT values were statistically significant between the different sets of sample pairs, as well as the 50:50% AT values obtained for different observer groups. CONCLUSIONS 50:50% CIEDE2000 acceptability thresholds for dentistry are significantly different depending on the chromaticity of the samples. Observers show higher acceptability for more achromatic samples (low chroma value) than for more chromatic samples. CLINICAL SIGNIFICANCE The difference in the AT for distinct regions of the dental color space can assist professionals as a quality control tool to assess clinical performance and interpret visual and instrumental findings in clinical dentistry, dental research, and subsequent standardization processes.
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Affiliation(s)
- Maria Tejada-Casado
- Department of Optics, Faculty of Science, University of Granada, Granada, Spain
| | - María M Pérez
- Department of Optics, Faculty of Science, University of Granada, Granada, Spain
| | - Alvaro Della Bona
- Post-Graduate Program in Dentistry, Dental School, University of Passo Fundo, Passo Fundo, RS, Brazil
| | - Henning Lübbe
- Vita Zahnfabrik H. Rauter GmbH & Co. KG, Bad-Säckingen, Germany
| | - Razvan Ghinea
- Department of Optics, Faculty of Science, University of Granada, Granada, Spain
- Department of Physics, University of Craiova, Craiova, Romania
| | - Luis Javier Herrera
- Department of Computer Architecture and Computer Technology, E.T.S.I.I.T. University of Granada, Granada, Spain
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You H, Huang X, Zhang X, Jin P, Xu Z, Zhai J, Gao F, Jia Y. A novel n-UV convertible colour-tunable emitting oxynitride phosphor: Realization based on Ce 3+ -Tb 3+ energy transfer. LUMINESCENCE 2024; 39:e4701. [PMID: 38441275 DOI: 10.1002/bio.4701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 03/07/2024]
Abstract
In the present work, a novel n-UV convertible colour-tunable emitting phosphor was obtained based on the efficient Ce3+ -Tb3+ energy transfer in the Y10 Al2 Si3 O18 N4 host. By properly controlling the ratio of Ce3+ /Tb3+ , the colour hue of the obtained powder covered the blue and green regions, under excitation of 365 nm. The steady-state and dynamic-state luminescence measurement was performed to shed light on the related mechanism, which was justified by the electronic dipole-quadrupole dominating the related energy transfer process. Preliminary studies showed that Y10 Al2 Si3 O18 N4 :Ce3+ ,Tb3+ can be promising as an inorganic phosphor for white LED applications.
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Affiliation(s)
- Huanhuan You
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Hebei Street 438, Qinhuangdao, China
| | - Xiaoyu Huang
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Hebei Street 438, Qinhuangdao, China
| | - Xingda Zhang
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Hebei Street 438, Qinhuangdao, China
| | - Piaopiao Jin
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Hebei Street 438, Qinhuangdao, China
| | - Zhaopeng Xu
- The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, School of Information Science and Engineering, Yanshan University, Qinhuangdao, China
| | - Jing Zhai
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Hebei Street 438, Qinhuangdao, China
| | - Faming Gao
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Hebei Street 438, Qinhuangdao, China
| | - Yongchao Jia
- Hebei Key Laboratory of Applied Chemistry, Yanshan University, Hebei Street 438, Qinhuangdao, China
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Jiang NW, Cheng YL, Huang HL, Zhong BJ, Bi W, Yu H. Correlation between patient satisfaction and color changes after tooth bleaching. J ESTHET RESTOR DENT 2024; 36:437-444. [PMID: 38303586 DOI: 10.1111/jerd.13200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 02/03/2024]
Abstract
OBJECTIVE This study aimed to investigate the relationship between patient satisfaction of outcomes and tooth color changes during and after tooth bleaching. METHODS In this clinical trial, 63 volunteers participated in an in-office bleaching procedure using a 40% hydrogen peroxide gel. The treatment consisted of two sessions, each comprising two 30-min applications of the bleaching gel. The L*, a*, and b* values of six maxillary anterior teeth were measured at baseline (T1), after the first bleaching session (T2), after the second bleaching session (T3), 1 week after the second in-office bleaching session (T4), and 3 weeks after the second in-office bleaching session (T5). The color differences (ΔE00 ) were calculated using CIEDE2000. A satisfaction scale with a score ranging from 0 to 3 was used to record participants' level of satisfaction with their tooth color at each time point. The data were statistically analyzed using repeated measures analysis of variance and logistic regression (α = 0.05). RESULTS Significant correlations were observed between ΔL*, Δb*, and ΔE00 values at T3 and patient satisfaction (all p < 0.05). The regression model indicated a more pronounced impact of Δb* on patient satisfaction compared to ΔL*. The established regression models were as follows: Logit (PL*b* ) = -4.354 + 0.271ΔL* - 0.585Δb* and Logit (PΔE00 ) = -2.552 + 0.521ΔE00 . The findings suggested a minimum ΔE00 value of 4.90 for satisfactory results. A minimum ΔE00 value of 3.9, 5.0, and 6.8 was necessary for central incisors, lateral incisors, and canines, respectively, to achieve a satisfactory result. CONCLUSIONS The ΔL*, Δb*, and ΔE00 values were found to be significantly correlated with patient satisfaction after bleaching. Δb* was identified as having a greater influence on patient satisfaction than ΔL* values in the regression model. Furthermore, attaining a minimum ΔE00 value of 4.90 is necessary to achieve satisfactory outcomes. A greater ΔE00 value is needed for canines than for incisors to achieve equivalent patient satisfaction. CLINICAL SIGNIFICANCE This study emphasizes the importance of considering the extent of color change needed to achieve patient satisfaction after tooth bleaching procedures.
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Affiliation(s)
- Neng-Wu Jiang
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- Department of Stomatology, Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, China
| | - Yi-Ling Cheng
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- VIP Clinic, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Huo-Lian Huang
- Department of Stomatology, Xiamen Chang Gung Hospital, Xiamen, China
| | - Bing-Jie Zhong
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Wei Bi
- Department of Stomatology, Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, China
| | - Hao Yu
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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Murali G, Kodandaramaiah U, Merilaita S. Habitat heterogeneity limits prey colour polymorphism maintained via negative frequency-dependent selection. J Evol Biol 2024; 37:274-282. [PMID: 38300757 DOI: 10.1093/jeb/voae013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/11/2023] [Accepted: 01/16/2024] [Indexed: 02/03/2024]
Abstract
The persistence of non-neutral trait polymorphism is enigmatic because stabilizing selection is expected to deplete variation. In cryptically coloured prey, negative frequency-dependent selection due to search image formation by predators has been proposed to favour rare variants, promoting polymorphism. However, in a heterogeneous environment, locally varying disruptive selection favours patch type-specific optima, resulting in spatial segregation of colour variants. Here, we address whether negative frequency-dependent selection can overcome selection posed by habitat heterogeneity to promote local polymorphism using an individual-based model. In addition, we compare how prey and predator mobility may modify the outcome. Our model revealed that frequency-dependent predation could strongly promote local prey polymorphism, but only when differences between morphs in patch-specific fitness were small. The effect of frequency-dependent predation depended on the predator adjustment of search image and was hampered by the prey population structure. Gene flow due to prey movement counteracted local selection, promoted local polymorphism to some extent, and relaxed the conditions for polymorphism due to frequency-dependent predation. Importantly, abrupt spatial changes in morph frequencies decreased the probability that mobile frequency-dependent predators could maintain local prey polymorphism. Overall, our study suggests that in a spatially heterogeneous environment, negative frequency-dependent selection may help maintain local polymorphism but only under a limited range of conditions.
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Affiliation(s)
- Gopal Murali
- IISER-TVM Centre for Research and Education in Ecology and Evolution (ICREEE), School of Biology, Thiruvananthapuram, India
| | - Ullasa Kodandaramaiah
- IISER-TVM Centre for Research and Education in Ecology and Evolution (ICREEE), School of Biology, Thiruvananthapuram, India
| | - Sami Merilaita
- Department of Biology, University of Turku, Turku, Finland
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Yu N, Ouyang Z. Effects of background colour, polarity, and saturation on digital icon status recognition and visual search performance. Ergonomics 2024; 67:433-445. [PMID: 37376815 DOI: 10.1080/00140139.2023.2226849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023]
Abstract
Visual design form is an important factor affecting users' cognition of icons, which plays an important role in visual search and the perception of the status shown by icons. In the graphical user interface, the icon colour is regularly used to indicate the running state of a function. The aim of this study was to investigate the effects of icon colour features on user perception and visual search performance under different background colours. There were three independent variables in the study, including background colour (white and black), icon polarity (positive and negative), and icon saturation (60, 80, and 100%). Thirty-one participants were recruited for the experiment. Task performance and eye movement results indicated that white background as well as positive polarity and 80% saturation icons brought the best performances. The findings of this study provide useful guidelines for designing more efficient and user-friendly icons and interfaces in the future.Practitioner summary: This study was to investigate the effects of icon colour features (polarity and saturation) on user perception and visual search performance under different colour backgrounds. Task performance and eye movement results indicated that white background as well as positive polarity and 80% saturation icons brought the best performances.
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Affiliation(s)
- Na Yu
- College of Furnishings and Industrial Design, Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China
| | - Ziwei Ouyang
- College of Art and Design, Nanjing Forestry University, Nanjing, China
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Liu Q, Wang L, He L, Lu Y, Wang L, Fu S, Luo X, Zhang Y. Metabolome and Transcriptome Reveal Chlorophyll, Carotenoid, and Anthocyanin Jointly Regulate the Color Formation of Triadica sebifera. Physiol Plant 2024; 176:e14248. [PMID: 38488424 DOI: 10.1111/ppl.14248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 02/16/2024] [Indexed: 03/19/2024]
Abstract
The Chinese tallow tree (Triadica sebifera) is an economically important plant on account of its ornamental value and oil-producing seeds. Leaf colour is a key characteristic of T. sebifera, with yellow-, red- and purple-leaved varieties providing visually impressive displays during autumn. In this study, we performed metabolomic and transcriptomic analyses to gain a better understanding of the mechanisms underlying leaf colour development in purple-leaved T. sebifera at three stages during the autumnal colour transition, namely, green, hemi-purple, and purple leaves. We accordingly detected 370 flavonoid metabolites and 10 anthocyanins, among the latter of which, cyanidin-3-xyloside and peonidin-3-O-glucoside were identified as the predominant compounds in hemi-purple and purple leaves. Transcriptomic analysis revealed that structural genes associated with the anthocyanin biosynthetic pathway, chlorophyll synthesis pathway and carotenoid synthesis pathway were significantly differential expressed at the three assessed colour stages. Additionally, transcription factors associated with the MYB-bHLH-WD40 complex, including 22 R2R3-MYBs, 79 bHLHs and 44 WD40 genes, were identified as candidate regulators of the anthocyanin biosynthetic pathway. Moreover, on the basis of the identified differentially accumulated anthocyanins and key genes, we generated genetic and metabolic regulatory networks for anthocyanin biosynthesis in T. sebifera. These findings provide comprehensive information on the leaf transcriptome and three pigments of T. sebifera, thereby shedding new light on the mechanisms underlying the autumnal colouring of the leaves of this tree.
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Affiliation(s)
- Qing Liu
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Leijia Wang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Lina He
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Yongkang Lu
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Lin Wang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Songling Fu
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
| | - Xumei Luo
- Anhui Academy of Forestry, People's Republic of China
| | - Yanping Zhang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, AnHui Agricultural University, People's Republic of China
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Curwen C, Timmers R, Schiavio A. Action, emotion, and music-colour synaesthesia: an examination of sensorimotor and emotional responses in synaesthetes and non-synaesthetes. Psychol Res 2024; 88:348-362. [PMID: 37453940 PMCID: PMC10857979 DOI: 10.1007/s00426-023-01856-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/27/2023] [Indexed: 07/18/2023]
Abstract
Synaesthesia has been conceptualised as a joining of sensory experiences. Taking a holistic, embodied perspective, we investigate in this paper the role of action and emotion, testing hypotheses related to (1) changes to action-related qualities of a musical stimulus affect the resulting synaesthetic experience; (2) a comparable relationship exists between music, sensorimotor and emotional responses in synaesthetes and the general population; and (3) sensorimotor responses are more strongly associated with synaesthesia than emotion. 29 synaesthetes and 33 non-synaesthetes listened to 12 musical excerpts performed on a musical instrument they had first-hand experience playing, an instrument never played before, and a deadpan performance generated by notation software, i.e., a performance without expression. They evaluated the intensity of their experience of the music using a list of dimensions that relate to sensorimotor, emotional or synaesthetic sensations. Results demonstrated that the intensity of listeners' responses was most strongly influenced by whether or not music is performed by a human, more so than familiarity with a particular instrument. Furthermore, our findings reveal a shared relationship between emotional and sensorimotor responses among both synaesthetes and non-synaesthetes. Yet it was sensorimotor intensity that was shown to be fundamentally associated with the intensity of the synaesthetic response. Overall, the research argues for, and gives first evidence of a key role of action in shaping the experiences of music-colour synaesthesia.
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Affiliation(s)
- Caroline Curwen
- Department of Music, The University of Sheffield, Jessop Building, 34 Leavygreave Road, Sheffield, S3 7RD, UK.
| | - Renee Timmers
- Department of Music, The University of Sheffield, Jessop Building, 34 Leavygreave Road, Sheffield, S3 7RD, UK
| | - Andrea Schiavio
- School of Arts and Creative Technologies, University of York, Sally Baldwin Building D, York, YO10 5DD, UK
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30
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Yağcı Ö, Fidan M. Influence of Thickness on the Translucency Parameter and Whiteness Index of Single-Shade Resin Composites. Oper Dent 2024; 49:189-199. [PMID: 38349843 DOI: 10.2341/23-053-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2023] [Indexed: 02/15/2024]
Abstract
The study aimed to evaluate the effect of thickness on the translucency parameter (TP) and whiteness index for dentistry (WID) of single-shade resin composites compared with a multi-shade resin composite after thermocycling. A total of 100 resin composite samples of five brands (Filtek Z250, Omnichroma, Vittra APS Unique, Zenchroma, and Charisma Diamond One) with thicknesses of 2 mm and 4 mm were prepared (n=10). CIE L*a*b* coordinates were obtained using a spectrophotometer. The resin composite samples were subjected to 10,000 thermocycles. Before and after thermocycling, TP values were calculated with the CIEDE2000 formula, and whiteness values were calculated using the WID. The influence of thickness, resin composite, and aging on these variables was analyzed using the generalized linear model (p<0.05). Omnichroma and Filtek Z250 exhibited, respectively, the highest and the lowest TP00 values compared with the other resin materials (p<0.001). The TP00 values of Zenchroma and Diamond One were similar (p>0.05). Vittra APS Unique had a lower TP than Zenchroma and Diamond One (p<0.001). Before thermocycling, the highest WID showed the combination of Vittra APS Unique with thicknesses of 2 mm (48.33±1.18). After thermocycling, the highest WID was shown in the combination of Vittra APS Unique with thicknesses of 2 mm (45.33±0.55) and 4 mm (46.23±0.94) (p<0.001). After thermocycling, the lowest WID was for the combination of Filtek Z250 with thicknesses 2 mm (21.16±0.93) and 4 mm (20.70±0.91) (p<0.001). The TP and WID values of the resin composites varied across different composites and thicknesses. Single-shade resin composites of different thicknesses demonstrated higher translucency and whiteness values than multi-shade resin composite, both before and after thermocycling.
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Affiliation(s)
- Ö Yağcı
- Özhan Yağcı, DDS, Department of Restorative Dentistry, Faculty of Dentistry, Uşak University, Turkey
| | - M Fidan
- *Muhammet Fidan, DDS, Department of Restorative Dentistry, Faculty of Dentistry, Uşak University, Turkey
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31
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An H. Ceramic veneer shade evaluation using a multi colored 3D-printed model-A case report. J ESTHET RESTOR DENT 2024; 36:415-420. [PMID: 37737648 DOI: 10.1111/jerd.13138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/18/2023] [Accepted: 09/10/2023] [Indexed: 09/23/2023]
Abstract
OBJECTIVE This article demonstrates the use of a multicolored 3D-printed model for laboratory shade evaluation of ceramic veneers. CLINICAL CONSIDERATIONS A young female patient presented with peg lateral incisors and diastemata between her maxillary incisors. Four ceramic veneers for her maxillary incisors were fabricated using a digital workflow. A multicolored 3D-printed model was manufactured using material jetting technology. The multicolored model and try-in pastes were used to evaluate and adjust the shade of the veneers. Clinically acceptable color matching was achieved, the veneers were delivered without further chairside shade adjustments. CONCLUSIONS Successful color evaluation and adjustment were achieved using the combination of multicolored 3D-printed model and try-in pastes. The use of this approach saved time for stump shade taking and fabrication of tooth-colored dies. CLINICAL SIGNIFICANCE A multicolored 3D-printed model can be a useful tool for color evaluation and adjustment of ceramic restorations.
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Affiliation(s)
- Hongseok An
- Department of Oral Rehabilitation and Biosciences, Oregon Health & Science University School of Dentistry, Portland, Oregon, USA
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32
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Hampé-Kautz V, Roman T, Schwob T, Cournault B, Etienne O. In-vivo repeatability of three intra-oral spectrophotometers. J ESTHET RESTOR DENT 2024; 36:520-526. [PMID: 38168888 DOI: 10.1111/jerd.13182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/16/2023] [Accepted: 11/29/2023] [Indexed: 01/05/2024]
Abstract
OBJECTIVE The objective was to assess the repeatability of three spectrophotometers, based on the CIELCh factors and shadeguide reference measurements. MATERIALS AND METHODS Color analysis was performed using three devices: Rayplicker, Easyshade 4, and Easyshade V. Five repeated measures were performed by the same operator, on the right central maxillary incisor of 30 patients. The CIELCh factors were retrieved and the intra-class correlation was calculated. The Vita Classical and Vita 3D Master shadeguides were used to evaluate the respective Fleiss' Kappa factors. RESULTS Rayplicker and Easyshade V demonstrated strong intra-class correlation based on the CIELCh factors: 0.98, 0.99, and 0.91 for Rayplicker, and 0.95, 0.99, and 0.93 for Easyshade V, for the L*, C*, and h* parameters, respectively. Regarding the repeatability of the shadeguide data, while Easyshade 4 had the best repeatability when using the Vita Classical as a reference, Rayplicker and Easyshade V showed better repeatability when using the Vita 3D Master. CONCLUSION These findings suggest that both Rayplicker and Easyshade V are reliable devices for measuring CIELCh parameters. In terms of shadeguide references, the reliability of spectrophotometers is generally lower compared to the CIELCh measurements. CLINICAL SIGNIFICANCE Given their good repeatability, both the Rayplicker and the Easyshade V spectrophotometers are reliable tools for prosthetic dental practices.
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Affiliation(s)
| | - Tatiana Roman
- Robert Frank Dental Faculty, University of Strasbourg, Strasbourg, France
- INSERM U1121, Strasbourg, France
- Icube UMR7357, Strasbourg, France
| | - Thibault Schwob
- Robert Frank Dental Faculty, University of Strasbourg, Strasbourg, France
| | - Bérangère Cournault
- Robert Frank Dental Faculty, University of Strasbourg, Strasbourg, France
- INSERM U1121, Strasbourg, France
| | - Olivier Etienne
- Robert Frank Dental Faculty, University of Strasbourg, Strasbourg, France
- INSERM U1121, Strasbourg, France
- Icube UMR7357, Strasbourg, France
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Hardan L, Bourgi R, Hernández-Escamilla T, Piva E, Devoto W, Lukomska-Szymanska M, Cuevas-Suárez CE. Color stability of dual-cured and light-cured resin cements: A systematic review and meta-analysis of in vitro studies. J Prosthodont 2024; 33:212-220. [PMID: 37653684 DOI: 10.1111/jopr.13757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/04/2023] [Accepted: 08/21/2023] [Indexed: 09/02/2023] Open
Abstract
PURPOSE This systematic review and meta-analysis aimed to evaluate the difference in the color stability of light-cured and dual-cured resin cements. MATERIALS AND METHODS Two separate reviewers used the PubMed, Scopus, Web of Science, Embase, and Scielo databases to execute the systematic review. For the analysis, studies that evaluated the color stability of dual-cured and light-cured resin cements over time were used. The random effects model was used in the meta-analysis. Analyses of subgroups were carried out based on the aging technique. The methodological quality of each in vitro study was evaluated in accordance with the parameters of a prior systematic review. RESULTS From all databases, a total of 2223 articles were retrieved. Following the screening of titles and abstracts, 44 studies were selected for full text review, and a total of 27 articles were used for the qualitative analysis. Finally, 23 articles remained for the qualitative analysis. The majority of studies were labeled as having a medium risk of bias. The global analysis showed that the dual-cure resin cements had considerably greater differences in the color change (p = 0.006). A high heterogeneity index (86%) was found in the analysis. CONCLUSIONS The best available in vitro evidence suggests that dual-polymerizing cement has higher color variation than light-polymerized materials. To reduce the likelihood of color change after the luting of thin ceramic restorations, clinicians should employ light-polymerizable resin cements.
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Affiliation(s)
- Louis Hardan
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut, Lebanon
| | - Rim Bourgi
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut, Lebanon
- Department of Biomaterials and Bioengineering, University of Strasbourg, Strasbourg, France
| | - Triana Hernández-Escamilla
- Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, Hidalgo, Mexico
| | - Evandro Piva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | | | | | - Carlos Enrique Cuevas-Suárez
- Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, Hidalgo, Mexico
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Sugai R, Kobayashi M, Niizuma Y, Mizukami H, Koyasu M, Shiba T, Kitahara N, Manabe A. Color stability of bleached tooth enamel brushed with different stain-removing toothpastes. J ESTHET RESTOR DENT 2024; 36:484-493. [PMID: 37933985 DOI: 10.1111/jerd.13163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 09/26/2023] [Accepted: 10/23/2023] [Indexed: 11/08/2023]
Abstract
OBJECTIVE The effects of four toothpastes on the color stability of in-office bleached tooth specimens were determined. MATERIALS AND METHODS We evaluated an experimental toothpaste (EXP) and three commercially available toothpastes: Colgate Optic White (OPW), Aquafresh White & Protect (AWP), and Crest 3D White (CDW). OPW, AWP, and CDW contained inorganic abrasives, whereas EXP and AWP contained sodium polyphosphate. Forty-eight randomly selected human-extracted maxillary central incisors were bleached and brushed twice daily over 30 days. We analyzed the final color difference (ΔE*ab, ΔE00 , ΔWID ), arithmetic average surface roughness (Ra) of the enamel measured on days 0 and 30, and scanning electron microscopy images of enamel surfaces and toothpastes. ΔE*ab, ΔE00 , ΔWID , and Ra were analyzed using one-way analysis of variance and Tukey's test (α = 0.05). RESULTS ΔE*ab and ΔE00 values were significantly lower after toothbrushing with EXP, OPW, and CDW than with AWP. OPW induced the greatest positive ΔWID . Ra was significantly increased by OPW and CDW, but slightly increased by AWP, with cube-like particles, and EXP, with no particle-like structures. CONCLUSIONS Only EXP stabilized the color of bleached teeth without increasing the enamel surface roughness. Sodium polyphosphate with approximately 10 phosphate groups was effective at removing stains. CLINICAL SIGNIFICANCE The effect of toothpaste on the color stability of bleached teeth depends on the constituting abrasives and chemical components. Polyphosphoric acid has different stain-removal effects depending on its degree of polymerization. Additionally, although certain types of abrasives may be effective for color stability, they also increase the surface roughness of the enamel.
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Affiliation(s)
- Rintaro Sugai
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry, Tokyo, Japan
| | - Mikihiro Kobayashi
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry, Tokyo, Japan
| | - Yuiko Niizuma
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry, Tokyo, Japan
| | - Hiroyuki Mizukami
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry, Tokyo, Japan
| | - Masahiro Koyasu
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry, Tokyo, Japan
| | - Toshikazu Shiba
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry, Tokyo, Japan
| | - Nobuya Kitahara
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry, Tokyo, Japan
| | - Atsufumi Manabe
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry, Tokyo, Japan
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Liu G, Yang L, Gao L, Ma Y, Wu X, Wang X, Hao Z. Durability of infiltrated resin application on white spot lesions after different challenges: An ex vivo study. J Prosthet Dent 2024; 131:500-507. [PMID: 35256186 DOI: 10.1016/j.prosdent.2022.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 02/02/2022] [Accepted: 02/02/2022] [Indexed: 11/29/2022]
Abstract
STATEMENT OF PROBLEM Infiltrated resin has been widely used as a minimally invasive approach to masking white spot lesions and reinforcing demineralized enamel. Recent evidence confirms its satisfactory effect in the short term, but studies focusing on its long-term performance are lacking. PURPOSE The purpose of this ex vivo study was to evaluate the durability of infiltrated resin on white spot lesions after pH cycling and long-term thermocycling, staining, and toothbrushing. MATERIAL AND METHODS Four axial surfaces of 25 extracted human molars were sectioned and fabricated as specimens. The enamel surface of each specimen was prepared in 3 areas: sound enamel, demineralized enamel (white spot lesions), and demineralized enamel treated by infiltrated resin. Then, 4 specimens of each molar were allocated to different challenges simulating a 10-year follow-up: pH cycling, thermocycling, staining, and toothbrushing. The surface roughness, microhardness, and CIELab color values were measured before and after different treatments. A scanning electron microscope (SEM) was used to observe representative specimens. Linear mixed models were used to evaluate the effect of different treatments on microhardness, roughness, and color differences (ΔE) (α=.05). RESULTS Resin infiltration reduced the surface roughness and increased the microhardness of demineralized lesions, (P<.001) but the values of sound enamel at baseline were not reached. The pH cycling led to the greatest roughness values (515.6 ±56.9 nm) on resin-infiltrated lesions, followed by thermocycling (450.7 ±64.7 nm), toothbrushing (291.2 ±43.5 nm), and staining (183.6 ±49.3 nm) (all P<.001). Only pH cycling significantly decreased the microhardness of resin-infiltrated lesions (81.6 ±14.8 HV 0.2) after progressive demineralization (P<.001). No clinically identified differences were found between resin-infiltrated white spot lesions and sound enamel (ΔE=3.4 ±2.0) at baseline. However, resin-infiltrated lesions demonstrated significantly greater discoloration after pH cycling (ΔE=8.0 ±4.5, P<.001), thermocycling (ΔE=5.4 ±2.0, P=.014), and staining treatments (ΔE=10.4 ±3.2, P<.001) than sound enamel. CONCLUSIONS Infiltrated resin application reduced surface roughness, improved microhardness, and masked white spot lesions immediately. However, it could not reestablish the characteristics of sound enamel completely and resist chemical and mechanical challenges over time.
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Affiliation(s)
- Gen Liu
- Postgraduate student, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Ling Yang
- Associate Chief Physician, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Li Gao
- Associate Chief Physician, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Yuanyuan Ma
- Associate Chief Physician, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Xiangnan Wu
- Assistant Research Fellow, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Xiaodong Wang
- Associate Chief Physician, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China
| | - Zhichao Hao
- Lecturer, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, PR China.
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Kato T, Hikichi T, Kobayakawa M, Nakamura J, Takasumi M, Hashimoto M, Kobashi R, Yanagita T, Takagi T, Suzuki R, Sugimoto M, Asama H, Sato Y, Ohira H. L-Menthol for Color Difference Change Between Early Gastric Cancer and Surrounding Mucosa: A Prospective Study. Dig Dis Sci 2024; 69:922-932. [PMID: 38170335 DOI: 10.1007/s10620-023-08239-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND L-Menthol sprayed on early gastric cancer (EGC) has been reported to improve the visibility of the lesion. However, its impact when used in combination with novel image-enhanced endoscopy has not been investigated. AIM This study aimed to evaluate the visual effect of spraying L-menthol on EGC under linked color imaging (LCI). METHODS This open-label, single-arm, prospective study investigated the color difference between EGC and the surrounding mucosa (ΔEG) before and after spraying L-menthol. The primary endpoint was the percentage of lesions with ΔEG ≥ 5 on LCI. The percentage of lesions with ΔEG ≥ 5 on white light imaging (WLI) and blue laser imaging (BLI), ΔEG before and after spraying L-menthol, and percentage of lesions with increased ΔEG after spraying L-menthol constituted the secondary endpoints. RESULTS Sixty patients were included in the final analysis. 100% lesions had ΔEG ≥ 5, both before and after spraying L-menthol on LCI, with similar results observed in WLI as well as BLI. The median ΔEG on LCI, WLI, and BLI increased after spraying L-menthol (LCI: 16.9 vs. 21.5, p < 0.01; WLI: 10.4 vs. 13.4, p < 0.01; BLI; 12.1 vs. 15.7, before and after, respectively, p < 0.01); and LCI demonstrated the highest percentage of lesions with increased ΔEG (LCI, WLI, and BLI: 98.3%, 81.7%, and 76.7%, respectively, p < 0.01). CONCLUSION Although spraying L-menthol did not improve the visibility of EGC under LCI observation, a significant increase in ΔEG was observed in LCI (jRCTs 021200027).
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Affiliation(s)
- Tsunetaka Kato
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima-City, Fukushima, 960-1295, Japan
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Takuto Hikichi
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima-City, Fukushima, 960-1295, Japan.
| | - Masao Kobayakawa
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima-City, Fukushima, 960-1295, Japan
- Medical Research Center, Fukushima Medical University, Fukushima-City, Fukushima, Japan
| | - Jun Nakamura
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima-City, Fukushima, 960-1295, Japan
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Mika Takasumi
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Minami Hashimoto
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima-City, Fukushima, 960-1295, Japan
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Ryoichiro Kobashi
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima-City, Fukushima, 960-1295, Japan
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Takumi Yanagita
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima-City, Fukushima, 960-1295, Japan
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Tadayuki Takagi
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Rei Suzuki
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Mitsuru Sugimoto
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Hiroyuki Asama
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Yuki Sato
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
| | - Hiromasa Ohira
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima-City, Fukushima, Japan
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Seibt ACMD, Nerhing P, Pinton MB, Santos SP, Leães YSV, De Oliveira FDC, Robalo SS, Casarin BC, Dos Santos BA, Barin JS, Wagner R, De Menezes CR, Campagnol PCB, Cichoski AJ. Green technologies applied to low-NaCl fresh sausages production: Impact on oxidative stability, color formation, microbiological properties, volatile compounds, and sensory profile. Meat Sci 2024; 209:109418. [PMID: 38113656 DOI: 10.1016/j.meatsci.2023.109418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/24/2023] [Accepted: 12/10/2023] [Indexed: 12/21/2023]
Abstract
The influence of different concentrations of NaCl (2.5% and 1.75%), basic electrolyzed water (BEW), and ultrasound (US, 25 kHz, 159 W) on the quality of fresh sausages was studied. During storage at 5 °C, TBARS, pH, Eh, aw, nitrous pigments, and bacterial evolution were evaluated at three specific time intervals: 1d, 15d, and 30d. At the same time, the volatile compounds and sensory profile were specifically assessed on both the 1d and 30d. Notably, sausages with 1.75% NaCl and BEW displayed higher pH values (up to 6.30) and nitrous pigment formation, alongside reduced Eh (as low as 40.55 mV) and TBARS values (ranging from 0.016 to 0.134 mg MDA/kg sample), compared to the 2.5% NaCl variants. Protein content ranged between 13.01% and 13.75%, while lipid content was between 18.23% and 18.86%, consistent across all treatments. Psychrotrophic lactic bacteria showed a significant increase in low-NaCl sausages, ranging from 5.77 to 7.59 log CFU/g, indicative of potential preservative benefits. The sensory analysis favored the TUSBEW70 treatment for its salty flavor on the 30th day, reflecting a positive sensory acceptance. The study highlights that employing US and BEW in sausage preparation with reduced NaCl content (1.75%) maintains quality comparable to higher salt (2.5%) counterparts. These findings are crucial for meat processing, presenting a viable approach to producing healthier sausages with reduced sodium content without compromising quality, aligning with consumer health preferences and industry standards.
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Affiliation(s)
| | - Priscila Nerhing
- Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Mariana Basso Pinton
- Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Suelen Priscila Santos
- Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Yasmim Sena Vaz Leães
- Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | | | - Silvino Sasso Robalo
- Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Bianca Campos Casarin
- Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | | | - Juliano Smanioto Barin
- Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil
| | - Roger Wagner
- Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, Rio Grande do Sul, Brazil
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Çakmak G, Weber FA, Donmez MB, Kahveci Ç, Schimmel M, Yilmaz B. Effect of coffee thermocycling on the surface roughness and stainability of denture base materials with different chemical compositions manufactured with additive and subtractive technologies. J ESTHET RESTOR DENT 2024; 36:453-459. [PMID: 37705502 DOI: 10.1111/jerd.13136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/23/2023] [Accepted: 08/29/2023] [Indexed: 09/15/2023]
Abstract
OBJECTIVE To evaluate the effect of coffee thermocycling (CTC) on the surface roughness (Ra ) and stainability of denture base materials with different chemical compositions fabricated by using additive and subtractive manufacturing. MATERIALS AND METHODS Disk-shaped specimens were additively (FREEPRINT denture, AM) or subtractively (G-CAM, GSM and M-PM, SM) fabricated from three pink denture base materials in different chemical compositions (n = 10). Ra was measured before and after polishing, while color coordinates were measured after polishing. Specimens were subjected to CTC (5000 cycles) and measurements were repeated. Color differences (ΔE00 ) after CTC were calculated. Ra among different time intervals within materials was evaluated by using repeated measures analysis of variance (ANOVA), while 1-way ANOVA was used to evaluate the Ra of different materials within each time interval and the ΔE00 values. Color coordinates within each material were compared by using paired samples t-tests (α = 0.05). RESULTS Ra before polishing was the highest for all materials (p < 0.001), while SM had its lowest Ra after CTC and AM had its lowest Ra after polishing (p ≤ 0.008). Before polishing, AM had the highest Ra among the materials (p < 0.001). After polishing, SM had higher Ra than AM (p < 0.001). After CTC, GSM had the lowest Ra (p ≤ 0.048). SM had the lowest (p ≤ 0.031) and AM had the highest (p < 0.001) ΔE00 . CTC decreased the a* and b* values of SM and AM (p ≤ 0.017), and increased the L* values of AM (p < 0.001). CONCLUSIONS Polishing significantly reduced the surface roughness of all materials. CTC did not increase the surface roughness of materials above the clinically acceptable threshold. Only AM had perceptible color change when previously reported threshold values for denture base materials were considered. CLINICAL SIGNIFICANCE Tested denture base materials may have similar surface stability after coffee thermocycling. However, subtractively manufactured denture base materials may have improved color stability when subjected to long-term coffee consumption.
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Affiliation(s)
- Gülce Çakmak
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Franziska Alexandra Weber
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Zahnarztpraxis Landmesser, Spiez, Switzerland
- Zahnarztpraxis Krebs, Oey, Switzerland
| | - Mustafa Borga Donmez
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Department of Prosthodontics, Faculty of Dentistry, Istinye University, İstanbul, Turkey
| | | | - Martin Schimmel
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Burak Yilmaz
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
- Division of Restorative and Prosthetic Dentistry, The Ohio State University, Columbus, Ohio, USA
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Santer RD, Allen WL. Optimising the colour of traps requires an insect's eye view. Pest Manag Sci 2024; 80:931-934. [PMID: 37755337 DOI: 10.1002/ps.7790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/19/2023] [Accepted: 09/27/2023] [Indexed: 09/28/2023]
Abstract
Colour is a critical property of many traps used to control or monitor insect pests, and applied entomologists continue to devote time and effort to improving colour for greater trapping efficiency. This work has often been guided by human colour perceptions, which differ greatly from those of the pests being studied. As a result, trap development can be a laborious process that is heavily reliant on trial and error. However, the responses of an insect's photoreceptors to a given trap colour can be calculated using well-established procedures. Photoreceptor responses represent sensory inputs that drive insect behaviour, and if their relationship to insect attraction can be determined or hypothesised, they provide metrics that can guide the rational optimisation of trap colour. This approach has recently been used successfully in separate studies of tsetse flies and thrips, but could be applied to a wide diversity of pest insects. Here we describe this approach to facilitate its use by applied entomologists. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Roger D Santer
- Department of Life Sciences, Aberystwyth University, Aberystwyth, UK
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Favoreto MW, Parreiras SO, Wendlinger M, Carneiro TDS, Lenhani MI, Borges CPF, Reis A, Loguercio AD. Evaluation of hydrogen peroxide permeability, color change, and physical-chemical properties on the in-office dental bleaching with different mixing tip. J ESTHET RESTOR DENT 2024; 36:460-468. [PMID: 37728145 DOI: 10.1111/jerd.13134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/25/2023] [Accepted: 08/26/2023] [Indexed: 09/21/2023]
Abstract
OBJECTIVE This study aims to assess hydrogen peroxide (HP) penetration into the pulp chamber, color change (CC), physical-chemical properties, and material wastage (MW) and material used (MU) in mixing tips when using in-office bleaching gels with two different mixing tips. MATERIALS AND METHODS Forty teeth were divided into five groups (n = 8) based on the bleaching gels used (Pola Office +37.5% [PO+] and Whiteness HP Automixx Plus 35% [AM+]) and the mixing tip types (T-Mixer and Helical). A negative control group was treated with ultra-purified water. HP concentration was measured using UV-Vis, and CC was evaluated with a digital spectrophotometer. Initial concentration, pH, and viscosity were measured through Titration, a Digital pH meter, and Rheometer, respectively. MW and MU were measured using a precise analytical balance. Statistical analysis included two-way ANOVA, Tukey's, and Dunnett's test (α = 0.05). RESULTS A higher HP concentration was observed with PO+ with the Helical mixing tip in comparison with AM+ (p = 0.01). No significant differences in CC or MU were found for different mixing tips (p = 0.001). The T-mixer mixing tip resulted in significantly less MW (p < 0.00001) and improved mixture homogeneity and viscosity. CONCLUSIONS Utilizing a T-mixer with self-mixing bleaching gels achieves comparable CC while reducing MW. Moreover, it decreases HP penetration when using PO+. CLINICAL SIGNIFICANCE For the application of a self-mixing in-office bleaching gel, a T-mixer mixing tip should be recommended, as it reduces the penetration of hydrogen peroxide into the pulp chamber when using PO+, while also minimizing gel wastage.
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Affiliation(s)
| | - Sibelli Olivieri Parreiras
- Department of Restorative Dentistry, Universidad Autónoma de Baja California, Mexicali, Baja California, Mexico
| | - Michel Wendlinger
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Taynara De Souza Carneiro
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
- Area of Stomatology, IDIBO Research Group, Health Sciences Faculty, Rey Juan Carlos University, Madrid, Spain
| | - Mariah Ignez Lenhani
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | | | - Alessandra Reis
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Alessandro D Loguercio
- Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Brazil
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Hong X, Xiang Y, Wang Z, Li J, Zou R, Gao P. Contextual modulation of the red-attractiveness effect: Differences in affiliation and competitive settings. Acta Psychol (Amst) 2024; 243:104171. [PMID: 38320412 DOI: 10.1016/j.actpsy.2024.104171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/08/2024] Open
Abstract
Color is not just about aesthetics but also communicates specific information and has important implications for psychological functioning. It has been shown that the color red enhances perceived attractiveness when evaluating the opposite sex, which we call the red-attractiveness effect. However, few studies have attached importance to the social context in which attractiveness ratings are made, which means that the red-attractiveness effect is rarely explained by analyzing the role of social context. We conducted two experiments to test the red-attractiveness effect in Chinese culture and the influence of context (affiliation or competitive) on the red-attractiveness effect. Experiment 1 (160 Chinese college students, 80 males) showed that the opposite-sex target in red, compared to white, was rated more attractive, and the red-attractiveness effect was applicable to Chinese culture. Experiment 2 (480 Chinese college students, 240 males) found that perceived attractiveness was strengthened in the affiliation context and weakened in the competitive context, that is, the main effect of context was significant. We did not find any significant effect of the color red in either context, that is, the color main effect was not significant. However, the results indicate that red can enhance perceived attractiveness when evaluating the opposite sex. This study demonstrates that the red attractiveness effect may exist in different cultural backgrounds and contexts.
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Affiliation(s)
- Xiaobin Hong
- Department of Psychology, Wuhan Sports University, Wuhan 430079, China; Hubei Key Laboratory of Exercise Training and Monitoring, Wuhan Sports University, Wuhan 430079, China
| | - Yuxiu Xiang
- Department of Psychology, Wuhan Sports University, Wuhan 430079, China
| | - Zhonghuan Wang
- Department of Psychology, Wuhan Sports University, Wuhan 430079, China
| | - Jinkun Li
- Department of Psychology, Wuhan Sports University, Wuhan 430079, China
| | - Rong Zou
- Department of Psychology, Wuhan Sports University, Wuhan 430079, China; Hubei Key Laboratory of Exercise Training and Monitoring, Wuhan Sports University, Wuhan 430079, China
| | - Ping Gao
- Research Center for Sports and Health Innovation and Development, Wuhan Sports University, Wuhan, China.
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Recknagel H, Leitão HG, Elmer KR. Genetic basis and expression of ventral colour in polymorphic common lizards. Mol Ecol 2024; 33:e17278. [PMID: 38268086 DOI: 10.1111/mec.17278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/15/2023] [Accepted: 01/08/2024] [Indexed: 01/26/2024]
Abstract
Colour is an important visual cue that can correlate with sex, behaviour, life history or ecological strategies, and has evolved divergently and convergently across animal lineages. Its genetic basis in non-model organisms is rarely known, but such information is vital for determining the drivers and mechanisms of colour evolution. Leveraging genetic admixture in a rare contact zone between oviparous and viviparous common lizards (Zootoca vivipara), we show that females (N = 558) of the two otherwise morphologically indistinguishable reproductive modes differ in their ventral colouration (from pale to vibrant yellow) and intensity of melanic patterning. We find no association between female colouration and reproductive investment, and no evidence for selection on colour. Using a combination of genetic mapping and transcriptomic evidence, we identified two candidate genes associated with ventral colour differentiation, DGAT2 and PMEL. These are genes known to be involved in carotenoid metabolism and melanin synthesis respectively. Ventral melanic spots were associated with two genomic regions, including a SNP close to protein tyrosine phosphatase (PTP) genes. Using genome re-sequencing data, our results show that fixed coding mutations in the candidate genes cannot account for differences in colouration. Taken together, our findings show that the evolution of ventral colouration and its associations across common lizard lineages is variable. A potential genetic mechanism explaining the flexibility of ventral colouration may be that colouration in common lizards, but also across squamates, is predominantly driven by regulatory genetic variation.
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Affiliation(s)
- Hans Recknagel
- School of Biodiversity, One Health and Veterinary Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
| | - Henrique G Leitão
- School of Biodiversity, One Health and Veterinary Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
| | - Kathryn R Elmer
- School of Biodiversity, One Health and Veterinary Medicine, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, UK
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Molaei M, Mohammadzadeh A, Ghasemi A, Badiee M. Effect of dry and wet finishing and polishing on color change and opacity of nanofill and nanohybrid composites. BMC Oral Health 2024; 24:287. [PMID: 38419033 PMCID: PMC10903010 DOI: 10.1186/s12903-024-03944-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 01/26/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND As superior esthetic is one of the main reasons for using composite resins, it is very important to be familiar with factors and techniques affecting their optical properties and appearance. AIM The aim of this study was comparing the effect of finishing and polishing with and without water coolant, on the color change and opacity of composite resin materials. METHODS Composites used for preparing samples were Z250 (microhybrid), Z350XT (nanofilled), and Z550 (nanohybrid). Then divided into 4 groups of 5 depending on finishing and polishing technique (dry or wet) and time (immediate and after twenty-four hours). After polishing, samples were assessed using a spectrophotometer. Color change and opacity were determined. Data was analyzed using Kolmogorov-Smirnov, ANOVA and Tukey HSD tests. RESULTS Type of material at both time had a significant effect on ΔE and opacity. Our results in dry and wet technique immediately(T0) showed that the highest and lowest ΔE and opacity belong to Z350XT (p < 0.001). After Twenty-four hours (T24), opacity of Z250 in wet condition was higher than dry condition (p < 0.001). CONCLUSIONS Wet or dry technique was only effective on color in immediate polishing. Regarding opacity, technique was only effective in case of delayed polishing.
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Affiliation(s)
- Mehdi Molaei
- School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Anoosh Mohammadzadeh
- School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Ghasemi
- Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Badiee
- School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
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Hatab S, Waraich M, Amin D, Mahon C. Christmas tree fir green is not the intensive care unit's favourite colour. BMJ Case Rep 2024; 17:e258011. [PMID: 38409188 PMCID: PMC10900396 DOI: 10.1136/bcr-2023-258011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024] Open
Abstract
A patient in her 60s presented to a district general hospital with headache, loss of consciousness, and vomiting. She was diagnosed with a subarachnoid haemorrhage secondary to an anterior communicating artery aneurysm and was transferred to a tertiary unit for coiling of the aneurysm under the neurosurgical team. She was intubated and had close observational monitoring, where it was noted that her oxygen saturations, obtained using finger-pulse oximetry, varied between 94% and 100%. Each fingernail had a different acrylic nail polish colour which we believe resulted in these inconsistent readings. The dark forest green colour consistently gave a significantly lower oxygen saturation reading when compared with our control, which was the arterial blood gas oxygen saturation, whereas orange and purple were most like our control. We therefore found that the varied colours painted on acrylic nails affected oxygen saturation readings differently. This difference could affect treatment pathways for patients in theatre and the intensive care unit.
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Affiliation(s)
- Sultan Hatab
- Critical Care, National Hospital for Neurology and Neurosurgery, London, UK
| | - Manprit Waraich
- Critical Care, National Hospital for Neurology and Neurosurgery, London, UK
| | - Danyal Amin
- Critical Care, National Hospital for Neurology and Neurosurgery, London, UK
| | - Ciara Mahon
- Critical Care, National Hospital for Neurology and Neurosurgery, London, UK
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Çakır Kılınç NN, Yıldız P. Do mouthwashes affect the optical properties of resin cement? BMC Oral Health 2024; 24:275. [PMID: 38403580 PMCID: PMC10894495 DOI: 10.1186/s12903-024-04044-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 02/17/2024] [Indexed: 02/27/2024] Open
Abstract
OBJECTIVES The objective of this study was to evaluate the effect of mouthwashes on the optical properties of resin cement. MATERIALS AND METHODS One hundred and 60 resin cement discs (6x2mm) were produced from 4 different brands of resin cement (Panavia V5, Estecem II, RelyX Veneer, NX3) with the help of a Teflon mould. The discs were divided into 4 subgroups, 1 of which served as the control group, to be immersed in mouthwashes after measuring the initial L, a, and b values on white and black backgrounds. Colour measurements were repeated after the 1st and 7th days. The collected data were used to calculate the ∆E00 value to measure colour stability, the translucency parameter (TP00), and the contrast ratio parameter (CR) to compare translucency change. Data were statistically analysed using mixed-design analysis of ANOVA and the Bonferroni-Dunn test. Repeated measures ANOVA was used for dependent results (α = 0.05). RESULTS On the ∆E00, TP00, and CR parameters; the joint effect of resin groups, mouthwash groups, and measurement times were found to be statistically significant. The ∆E00 (colour difference) parameter; the joint effect of resin groups, mouthwash groups, and measurement times was found to be statistically significant. The TP00; the joint effect of resin groups, mouthwash groups, and measurement times were found to be statistically significant. The CR parameter; the joint effect of resin groups, mouthwash groups, and measurement times was found to be statistically significant. In the Estecem II (Tokuyama) group, the means of Listerine Cool Mint (Johnson & Johnson) was above acceptable limits in both time periods. In the Panavia V5 (Kuraray Noritake) group, the color change was above acceptable limits in all time periods and in all mouthwash groups. Among the resin materials used, Estecem II (Tokuyama) shows the most color change. Listerine Cool Mint (Johnson & Johnson) caused more color change than other mouthwashes at all times. CONCLUSIONS Within the limitations of this study; the colour stability and translucency value of resin cement depend on both the resin cement content and the mouthwash. Long-term use of mouthwash may adversely affect the optical properties of the resin cement. CLINICAL RELEVANCE Clinicians should take into account the fact that mouthwash use and the composition of the resin cement employed will have an impact on the colour of laminate veneers.
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Affiliation(s)
| | - Pınar Yıldız
- Nimet Bayraktar Oral and Dental Health Center, Kayseri, Turkey.
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Ma S, Zhou H, Ren T, Yu ER, Feng B, Wang J, Zhang C, Zhou C, Li Y. Integrated transcriptome and metabolome analysis revealed that HaMYB1 modulates anthocyanin accumulation to deepen sunflower flower color. Plant Cell Rep 2024; 43:74. [PMID: 38379014 PMCID: PMC10879246 DOI: 10.1007/s00299-023-03098-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 09/25/2023] [Indexed: 02/22/2024]
Abstract
KEY MESSAGE HanMYB1 was found to play positive roles in the modulation of anthocyanins metabolism based on the integrative analysis of different color cultivars and the related molecular genetic analyses. As a high value ornamental and edible crop with various colors, sunflowers (Helianthus annuus L.) provide an ideal system to understand the formation of flower color. Anthocyanins are major pigments in higher plants, which is associated with development of flower colors and ability of oxidation resistance. Here, we performed an integrative analysis of the transcriptome and flavonoid metabolome in five sunflower cultivars with different flower colors. According to differentially expressed genes and differentially accumulated flavonoids, these cultivars could be grouped into yellow and red. The results showed that more anthocyanins were accumulated in the red group flowers, especially the chrysanthemin. Some anthocyanins biosynthesis-related genes like UFGT (UDP-glycose flavonoid glycosyltransferase) also expressed more in the red group flowers. A MYB transcriptional factor, HanMYB1, was found to play vital positive roles in the modulation of anthocyanins metabolism by the integrative analysis. Overexpressed HanMYB1 in tobacco could deepen the flower color, increase the accumulation of anthocyanins and directly active the express of UFGT genes. Our findings indicated that the MYB transcriptional factors provide new insight into the dynamic regulation of the anthocyanin biosynthesis in facilitating sunflower color formation and anthocyanin accumulation.
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Affiliation(s)
- Siqi Ma
- Marine Agriculture Research Center/Key Laboratory of Synthetic Biology of Ministry of Agriculture and Rural Affairs, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Hanlin Zhou
- Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement/Biotechnology Research Center, China Three Gorges University, Yichang, 443002, China
| | - Tingting Ren
- Marine Agriculture Research Center/Key Laboratory of Synthetic Biology of Ministry of Agriculture and Rural Affairs, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Er-Ru Yu
- Guizhou Institute of Oil Crops, Guizhou Academy of Agricultural Science, Guiyang, 550006, China
| | - Bin Feng
- Guizhou Institute of Oil Crops, Guizhou Academy of Agricultural Science, Guiyang, 550006, China
| | - Juying Wang
- Technical Innovation Center for Comprehensive Utilization of Saline-Alkali Land in Huangsanjiao Agricultural High-Tech, Dongying, 257000, China
| | - Chengsheng Zhang
- Marine Agriculture Research Center/Key Laboratory of Synthetic Biology of Ministry of Agriculture and Rural Affairs, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Chao Zhou
- Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement/Biotechnology Research Center, China Three Gorges University, Yichang, 443002, China.
| | - Yiqiang Li
- Marine Agriculture Research Center/Key Laboratory of Synthetic Biology of Ministry of Agriculture and Rural Affairs, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China.
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Yılmaz D, Sabatini GP, Kahveci Ç, Yoon HI, Yilmaz B, Çakmak G, Dönmez MB. Effect of Material Thickness and Coffee Thermocycling on the Color Stability and Translucency of Additively and Subtractively Manufactured Resin-Based Materials for Definitive Restorations. INT J PROSTHODONT 2024; 37:143-150. [PMID: 37988420 DOI: 10.11607/ijp.8870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
PURPOSE To evaluate the effect of material thickness and coffee thermocycling on the optical properties of definitive resin-based materials created via additive manufacturing (AM) and subtractive manufacturing (SM). MATERIALS AND METHODS Specimens were prepared in three thicknesses (1, 1.5, and 2 mm) from three AM (3D-CB, 3D-TH, and 3D-CT) and two SM (G-CAM and VE) resin-based materials (n = 15 per material and thickness combination). Color coordinates of each specimen were measured after polishing and after 10,000 cycles of coffee thermocycling. Color differences (ΔE00s) and relative translucency parameter (RTP) values were calculated. After logarithmic transformation, ΔE00 values were analyzed with two-way ANOVA, while RTP values were analyzed with generalized linear model test (α = .05). RESULTS 3D-TH had the highest pooled ΔE00 and G-CAM had the lowest (P ≤ .004). 3D-CB had higher pooled ΔE00 than VE and 3D-CT (P ≤ .002). For the SM group, the 1.5-mm and 2-mm 3DCT specimens and 1-mm 3D-TH specimens had lower ΔE00 than 1.5-mm and 2-mm 3D-TH specimens (P ≤ .036). Most of the AM specimens and 1-mm VE specimens had higher ΔE00 than 2-mm G-CAM specimens (P ≤ .029). Further, most AM specimens had higher ΔE00 than 1.5-mm G-CAM specimens (P ≤ .006). RTP values increased in order of 3D-CT, G-CAM, VE, 3D-CB, and 3D-TH specimens (P < .001). Increased thickness and coffee thermocycling mostly reduced RTP (P < .001). CONCLUSIONS 3D-TH typically had higher color change values than SM specimens, while G-CAM typically had lower color change values than AM specimens. Only the 1.5-mm and 2-mm 3D-TH specimens had unacceptable color changes. Thickness and coffee thermocycling mostly reduced the translucency.
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Allan SA. Color, pattern, and background contrast affect attraction of Euxesta eluta and Chaetopsis massyla (Diptera: Ulidiidae). Environ Entomol 2024; 53:67-76. [PMID: 38204206 DOI: 10.1093/ee/nvad120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/28/2023] [Accepted: 12/07/2023] [Indexed: 01/12/2024]
Abstract
Euxesta eluta Loew and Chaetopsis massyla Walker (Diptera: Ulidiidae) are primary pests of sweet corn in Florida. Attraction of adult flies to various visual stimuli was evaluated in the laboratory to provide insight into the potential development of enhanced trapping strategies. In assays evaluating different colored sticky traps, more E. eluta were collected on light blue, mid blue, lime green, and orange yellow traps, whereas attraction of C. massyla was greater to lime green and fluorescent green traps. In a comparison of yellow 3-dimensional shapes, more E. eluta were collected on yellow cylinders than on spheres or cubes; however, more C. massyla were collected on cylinders than on cubes or spheres. When colored traps were placed against a white background, more E. eluta were collected on lime green compared with yellow, blue, and orange traps; however, when placed against a black background, attraction to the lime green trap was reduced. Against the white background attraction of C. massyla, was strongest to yellow, then lime green and orange traps, followed by blue, but with a black background, differences between traps collections were reduced. The addition of ultraviolet (UV) reflectance to yellow increased the attraction of E. eluta, but C. massyla were more attracted to yellows without UV reflection or fluorescence. Black patterns on yellow traps affected attraction, with E. eluta more attracted to wide stripes, a large square, or many small squares, whereas C. massyla was more strongly attracted to stripes. Utilization of these visual attributes could be useful in improving surveillance for these species.
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Affiliation(s)
- Sandra A Allan
- United States Department of Agriculture, Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, USA
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Sayed ME, Jain S, Ageeli AA, Alnajdi AK, Zain AA, Alali M, Alhazmi AAA, Alsubaiy EF, Alshehri AH, Alshahrani AA, Alamri M, Al Wadei MH, Jokhadar HF, Mattoo K. Influence of Chairside Simulated Adjustment (Finishing and Polishing) Protocol and Chlorhexidine Mouthwash Immersion on Color Stability and Translucency of 2 and 3 Preshaded Multilayered Monolithic Zirconia. Med Sci Monit 2024; 30:e943404. [PMID: 38374614 PMCID: PMC10893764 DOI: 10.12659/msm.943404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 12/22/2023] [Indexed: 02/21/2024] Open
Abstract
BACKGROUND Preshaded monolithic zirconia (MLZ) is reported to have high translucency. This study aimed to assess the effect of chlorhexidine gluconate (ChG) mouthwash on color and translucency parameter (TP) of 2 different preshaded MLZ dental ceramics after clinical adjustment. MATERIAL AND METHODS Two MLZ disk-shaped specimens [NPM (Nacera Pearl Multi-Shade) (n=72) and CZM (Ceramill Zolid FX Multilayer)] (n=72) were simulated for clinical adjustment, finished, and polished using 2 adjustment kits [recommended kit, third-party kit: Diasynt Plus and SUN (n=12 each)] and later immersed in ChG mouthwash (Avohex) for 2 weeks. Difference in color (ΔE) and TP (Y) were calculated using the CIELab formula after measuring the coordinates (Lab) with a colorimeter. Individual changes in color and TP were assessed on the Clinical acceptance (perceptible) threshold (CAT/CPT) and Translucency perception threshold (TPT), respectively. Differences between the 2 ceramics were assessed using one-way ANOVA and post hoc tests, with all differences considered significant at P<0.05. RESULTS NPM and CZM differed in color at baseline despite having the same Vita shade combination. Between the 2 preshaded MLZ ceramics, NPM showed significant changes in color when adjusted with a third-party kit. Chlorhexidine produced changes in color and TP that were designated as clinically perceptible (ΔE=1.0 to 3.3) on the CAT/CPT and TPT scales, irrespective of the adjustment kit used. ChG produced the least or no changes in glazed MLZ specimens. CONCLUSIONS ChG mouthwash, whenever prescribed for preshaded MLZ restoration, should be adjusted prior to final glazing to avoid clinical adjustments that adversely affects color and translucency of the restoration.
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Affiliation(s)
- Mohammed E. Sayed
- Department of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Saurabh Jain
- Department of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Abrar A. Ageeli
- Dental Director Center and Specialty Dental Center, Ministry of Health, Dental Public Health, Jazan, Saudi Arabia
| | | | - Asma Ahmed Zain
- Intern Clinic, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Maimonah Alali
- Intern Clinic, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | | | - Ebrahim Fihaid Alsubaiy
- Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Abdullah Hasan Alshehri
- Department of Prosthodontics, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Ahid Amer Alshahrani
- Department of Dental Technology, Applied Medical Science, King Khalid University, Abha, Saudi Arabia
| | - Mohammad Alamri
- Department of Restorative Dental Science, Faculty of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Mohammed H. Al Wadei
- Department of Restorative Dental Science, Faculty of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Hossam F. Jokhadar
- Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Khurshid Mattoo
- Department of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
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Fathy H, Haroun H, Riad M. The optical behavior of nano filled resin composite loaded with graphene oxide nanoparticles. BMC Oral Health 2024; 24:239. [PMID: 38355530 PMCID: PMC10868066 DOI: 10.1186/s12903-023-03798-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/18/2023] [Indexed: 02/16/2024] Open
Abstract
OBJECTIVES Assessment of the effect of incorporation of graphene oxide nanoparticles (GONPs), different concentrations into resin composite with different thicknesses on its color modulation. MATERIALS AND METHODS GONPs were prepared using the chemical reduction method and characterized using a transmission electron microscope and X-ray diffraction. The minimum concentrations of GONPs that provided the most effective antibacterial action (0.05 wt% and 0.2 wt%.) were prepared to be the concentration added to the tested resin composite. Calculations were done to find the required volume of the GONPs solution needed according to the mass of the resin composite. 70 nano-filled resin composite discs were prepared with 10 mm diameter × 3 mm height. 10 resin composite discs were prepared without GONPs incorporation and served as a control (G0). The other 60 resin composite specimens were divided into 2 equal groups (G1& G2) according to the concentration of the loaded nanoparticles in the specimens. Each group was divided into 3 equal subgroups according to the thickness of the resin composite containing GONPs; [T1: GONPs dispersed in the bottom 1 mm of the disc, while the top 2 mm of the disc was of resin composite only. T2: GONPs dispersed only in the bottom 2 mm of the disc and T3: GONPs dispersed in the total thickness of the disc (3 mm)]. ∆E values were calculated using a Vita Easy shade Spectrophotometer. RESULTS Incorporation of GONPs into resin composite induced significant color change and among all the 6 experimental groups, G1T1 group (of 0.05 wt% concentration GONPs dispersed only in the bottom 1 mm of the disc) showed a non-significant color change. CONCLUSION Dispersion of GONPs has a detectable effect on the color change of resin composite. Meanwhile, dispersion in low concentration for only the bottom 1 mm thickness of resin composite has an undetectable effect on its color.
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Affiliation(s)
- Heba Fathy
- Faculty of Dentistry, Modern University for Technology and Information (MTI), Cairo, 11571, Egypt
| | - Hassan Haroun
- Faculty of Dentistry, Modern University for Technology and Information (MTI), Cairo, 11571, Egypt
| | - Mona Riad
- Faculty of Dentistry, Cairo University, 11 El-Saraya St, Manial, Cairo, 11553, Egypt.
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