Suzanna Maria Sayegh, Maha Daou, Georges Najjar, Elie Zebouni
{"title":"两种计算机辅助设计/计算机辅助制造临时材料颜色降解的体外比较：12个月的模拟。","authors":"Suzanna Maria Sayegh, Maha Daou, Georges Najjar, Elie Zebouni","doi":"10.4103/jips.jips_119_22","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>This study evaluated the color aging of two computer aided design/computer aided manufacturing (CAD/CAM) provisional materials of different compositions (polymethyl methacrylate and composite resin) after exposure to thermal aging and immersion in coffee for 3, 6, and 12 intraoral months.</p><p><strong>Setting and design: </strong>The current in vitro study was conducted from September to December 2021 at the Craniofacial laboratory at the Saint Joseph University in Beirut, Lebanon.</p><p><strong>Materials and methods: </strong>The shades of 2.0 mm thick, 10.0 mm in diameter disk shaped specimens of VITA CAD Temp<sup>®</sup> and Ceramill<sup>®</sup> TEMP were measured using the VITA Linearguide 3D MASTER<sup>®</sup> and a conversion table to extract the CIE LFNx01aFNx01bFNx01 values on a white background (n = 30).</p><p><strong>Statistical analysis used: </strong>The color differences ΔE at 3, 6, and 12 months were calculated and analyzed by repeated measures ANOVA followed by Bonferroni multiple comparisons, univariate analyses, and one sample t tests.</p><p><strong>Results: </strong>The mean ΔE<sub>T1/T0</sub>, ΔE<sub>T2/T0</sub>, and ΔE<sub>T3/T0</sub> values were significantly higher than the cutoff values for acceptability and perceptibility for the VITA CAD Temp<sup>®</sup> and the Ceramill<sup>®</sup> TEMP groups. In addition, the increase in ΔE overtime was significantly greater in the Ceramill<sup>®</sup> TEMP group compared to the VITA CAD Temp<sup>®</sup> group.</p><p><strong>Conclusions: </strong>The Ceramill<sup>®</sup> TEMP changed color more and faster than the VITA CAD Temp<sup>®</sup>. In addition, whether at 3, 6, or 12 months, the color variations of both materials are not only perceptible but also unacceptable compared to the initial shade.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"23 1","pages":"38-44"},"PeriodicalIF":1.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10088442/pdf/","citationCount":"0","resultStr":"{\"title\":\"<i>In vitro</i> comparison of the color degradation of two computer-aided design/computer-aided manufacturing provisional materials: A 12-month simulation.\",\"authors\":\"Suzanna Maria Sayegh, Maha Daou, Georges Najjar, Elie Zebouni\",\"doi\":\"10.4103/jips.jips_119_22\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Aim: </strong>This study evaluated the color aging of two computer aided design/computer aided manufacturing (CAD/CAM) provisional materials of different compositions (polymethyl methacrylate and composite resin) after exposure to thermal aging and immersion in coffee for 3, 6, and 12 intraoral months.</p><p><strong>Setting and design: </strong>The current in vitro study was conducted from September to December 2021 at the Craniofacial laboratory at the Saint Joseph University in Beirut, Lebanon.</p><p><strong>Materials and methods: </strong>The shades of 2.0 mm thick, 10.0 mm in diameter disk shaped specimens of VITA CAD Temp<sup>®</sup> and Ceramill<sup>®</sup> TEMP were measured using the VITA Linearguide 3D MASTER<sup>®</sup> and a conversion table to extract the CIE LFNx01aFNx01bFNx01 values on a white background (n = 30).</p><p><strong>Statistical analysis used: </strong>The color differences ΔE at 3, 6, and 12 months were calculated and analyzed by repeated measures ANOVA followed by Bonferroni multiple comparisons, univariate analyses, and one sample t tests.</p><p><strong>Results: </strong>The mean ΔE<sub>T1/T0</sub>, ΔE<sub>T2/T0</sub>, and ΔE<sub>T3/T0</sub> values were significantly higher than the cutoff values for acceptability and perceptibility for the VITA CAD Temp<sup>®</sup> and the Ceramill<sup>®</sup> TEMP groups. In addition, the increase in ΔE overtime was significantly greater in the Ceramill<sup>®</sup> TEMP group compared to the VITA CAD Temp<sup>®</sup> group.</p><p><strong>Conclusions: </strong>The Ceramill<sup>®</sup> TEMP changed color more and faster than the VITA CAD Temp<sup>®</sup>. In addition, whether at 3, 6, or 12 months, the color variations of both materials are not only perceptible but also unacceptable compared to the initial shade.</p>\",\"PeriodicalId\":22669,\"journal\":{\"name\":\"The Journal of Indian Prosthodontic Society\",\"volume\":\"23 1\",\"pages\":\"38-44\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10088442/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Journal of Indian Prosthodontic Society\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4103/jips.jips_119_22\",\"RegionNum\":0,\"RegionCategory\":null,\"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":"The Journal of Indian Prosthodontic Society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/jips.jips_119_22","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
In vitro comparison of the color degradation of two computer-aided design/computer-aided manufacturing provisional materials: A 12-month simulation.
Aim: This study evaluated the color aging of two computer aided design/computer aided manufacturing (CAD/CAM) provisional materials of different compositions (polymethyl methacrylate and composite resin) after exposure to thermal aging and immersion in coffee for 3, 6, and 12 intraoral months.
Setting and design: The current in vitro study was conducted from September to December 2021 at the Craniofacial laboratory at the Saint Joseph University in Beirut, Lebanon.
Materials and methods: The shades of 2.0 mm thick, 10.0 mm in diameter disk shaped specimens of VITA CAD Temp® and Ceramill® TEMP were measured using the VITA Linearguide 3D MASTER® and a conversion table to extract the CIE LFNx01aFNx01bFNx01 values on a white background (n = 30).
Statistical analysis used: The color differences ΔE at 3, 6, and 12 months were calculated and analyzed by repeated measures ANOVA followed by Bonferroni multiple comparisons, univariate analyses, and one sample t tests.
Results: The mean ΔET1/T0, ΔET2/T0, and ΔET3/T0 values were significantly higher than the cutoff values for acceptability and perceptibility for the VITA CAD Temp® and the Ceramill® TEMP groups. In addition, the increase in ΔE overtime was significantly greater in the Ceramill® TEMP group compared to the VITA CAD Temp® group.
Conclusions: The Ceramill® TEMP changed color more and faster than the VITA CAD Temp®. In addition, whether at 3, 6, or 12 months, the color variations of both materials are not only perceptible but also unacceptable compared to the initial shade.
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