Ítalo C Carvalho, Rayssa C Barbosa, Carlos R G Torres, Alessandra B Borges, Mariane C Mailart
{"title":"厚度对生物活性修复材料颜色、透明度和荧光的影响。","authors":"Ítalo C Carvalho, Rayssa C Barbosa, Carlos R G Torres, Alessandra B Borges, Mariane C Mailart","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the influence of thickness on the color, translucency, and fluorescence of bioactive restorative materials.</p><p><strong>Methods: </strong>Cylindrical specimens were prepared in 1 and 2 mm-thicknesses with bioactive materials (n= 12): bioactive composite (Activa BioACTIVE Restorative - ABR); alkasite (Cention N - CNN); glass-hybrid material (EQUIA Forte Fil - EFF); and bovine enamel/dentin - ED, as control. The color (CIELAB coordinates) of the specimens was measured using a spectrophotometer against a white and black background, and the translucency parameter (TP₀₀) was calculated. The fluorescence was assessed using a spectrofluorophotometer. Data were analyzed with two-way ANOVA and Tukey's test (α= 0.05).</p><p><strong>Results: </strong>ABR and CNN exhibited reduced L*, a* and b* values over a white background at 2 mm compared with 1 mm. No differences in CIELAB coordinates were detected between the thicknesses when materials were measured against the black background. For both thicknesses, ABR exhibited the highest TP₀₀ values, and EFF the lowest. At 2 mm, CNN and ED presented similar translucency. ED showed the highest fluorescence values, followed by ABR, CNN, and EFF. The thickness influenced CIELAB parameters of the bioactive materials tested only when a white background was used. The bioactive composite exhibited a reduction in both L* and b* values as the thickness increased. In contrast, alkasite reduced only in L*, while glass-hybrid decreased in b*. As the thicknesses increased, the translucency parameter decreased for the bioactive restorative materials. The thicknesses had no effect on fluorescence of the materials.</p><p><strong>Clinical significance: </strong>Variations in the thickness of bioactive materials affect CIELAB coordinates only when applied against a white background. Therefore, dentists should consider the intraoral background when using these materials. While thickness does not affect fluorescence, greater thickness reduces translucency.</p>","PeriodicalId":7538,"journal":{"name":"American journal of dentistry","volume":"38 2","pages":"87-92"},"PeriodicalIF":0.9000,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of thickness on color, translucency, and fluorescence of bioactive restorative materials.\",\"authors\":\"Ítalo C Carvalho, Rayssa C Barbosa, Carlos R G Torres, Alessandra B Borges, Mariane C Mailart\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Purpose: </strong>To evaluate the influence of thickness on the color, translucency, and fluorescence of bioactive restorative materials.</p><p><strong>Methods: </strong>Cylindrical specimens were prepared in 1 and 2 mm-thicknesses with bioactive materials (n= 12): bioactive composite (Activa BioACTIVE Restorative - ABR); alkasite (Cention N - CNN); glass-hybrid material (EQUIA Forte Fil - EFF); and bovine enamel/dentin - ED, as control. The color (CIELAB coordinates) of the specimens was measured using a spectrophotometer against a white and black background, and the translucency parameter (TP₀₀) was calculated. The fluorescence was assessed using a spectrofluorophotometer. Data were analyzed with two-way ANOVA and Tukey's test (α= 0.05).</p><p><strong>Results: </strong>ABR and CNN exhibited reduced L*, a* and b* values over a white background at 2 mm compared with 1 mm. No differences in CIELAB coordinates were detected between the thicknesses when materials were measured against the black background. For both thicknesses, ABR exhibited the highest TP₀₀ values, and EFF the lowest. At 2 mm, CNN and ED presented similar translucency. ED showed the highest fluorescence values, followed by ABR, CNN, and EFF. The thickness influenced CIELAB parameters of the bioactive materials tested only when a white background was used. The bioactive composite exhibited a reduction in both L* and b* values as the thickness increased. In contrast, alkasite reduced only in L*, while glass-hybrid decreased in b*. As the thicknesses increased, the translucency parameter decreased for the bioactive restorative materials. The thicknesses had no effect on fluorescence of the materials.</p><p><strong>Clinical significance: </strong>Variations in the thickness of bioactive materials affect CIELAB coordinates only when applied against a white background. Therefore, dentists should consider the intraoral background when using these materials. While thickness does not affect fluorescence, greater thickness reduces translucency.</p>\",\"PeriodicalId\":7538,\"journal\":{\"name\":\"American journal of dentistry\",\"volume\":\"38 2\",\"pages\":\"87-92\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2025-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"American journal of dentistry\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"American journal of dentistry","FirstCategoryId":"3","ListUrlMain":"","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
Influence of thickness on color, translucency, and fluorescence of bioactive restorative materials.
Purpose: To evaluate the influence of thickness on the color, translucency, and fluorescence of bioactive restorative materials.
Methods: Cylindrical specimens were prepared in 1 and 2 mm-thicknesses with bioactive materials (n= 12): bioactive composite (Activa BioACTIVE Restorative - ABR); alkasite (Cention N - CNN); glass-hybrid material (EQUIA Forte Fil - EFF); and bovine enamel/dentin - ED, as control. The color (CIELAB coordinates) of the specimens was measured using a spectrophotometer against a white and black background, and the translucency parameter (TP₀₀) was calculated. The fluorescence was assessed using a spectrofluorophotometer. Data were analyzed with two-way ANOVA and Tukey's test (α= 0.05).
Results: ABR and CNN exhibited reduced L*, a* and b* values over a white background at 2 mm compared with 1 mm. No differences in CIELAB coordinates were detected between the thicknesses when materials were measured against the black background. For both thicknesses, ABR exhibited the highest TP₀₀ values, and EFF the lowest. At 2 mm, CNN and ED presented similar translucency. ED showed the highest fluorescence values, followed by ABR, CNN, and EFF. The thickness influenced CIELAB parameters of the bioactive materials tested only when a white background was used. The bioactive composite exhibited a reduction in both L* and b* values as the thickness increased. In contrast, alkasite reduced only in L*, while glass-hybrid decreased in b*. As the thicknesses increased, the translucency parameter decreased for the bioactive restorative materials. The thicknesses had no effect on fluorescence of the materials.
Clinical significance: Variations in the thickness of bioactive materials affect CIELAB coordinates only when applied against a white background. Therefore, dentists should consider the intraoral background when using these materials. While thickness does not affect fluorescence, greater thickness reduces translucency.
期刊介绍：
The American Journal of Dentistry, published by Mosher & Linder, Inc., provides peer-reviewed scientific articles with clinical significance for the general dental practitioner.
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