{"title":"比较整体式 CAD-CAM 牙科陶瓷与 VITA 经典色调指南的颜色匹配。","authors":"","doi":"10.1016/j.prosdent.2022.06.024","DOIUrl":null,"url":null,"abstract":"<div><h3>Statement of problem</h3><p>Matching the shade selected and the final color of a ceramic restoration is challenging, and studies on matching monolithic ceramics to the shade selected are lacking.</p></div><div><h3>Purpose</h3><p>The purpose of this in vitro study was to compare the color match of monolithic lithium disilicate (LDS), zirconia-reinforced lithium silicate (ZLS), presintered zirconia-reinforced lithium silicate (PS-ZLS), polymer-infiltrated ceramic network (PICN), and multilayer zirconia with the 3 modes of the VITA Classical shade guide.</p></div><div><h3>Material and methods</h3><p>This study was performed on 50 rectangular plates (14×12×1 mm) of 5 types of ceramics with A2 shade (n=10). Zirconia specimens were evaluated in 3 locations: incisal, medial, and cervical thirds. The color coordinates of the specimens of all 7 groups were measured on #3 and #8 Ivoclar Natural Die Color material by using a reflective spectrophotometer. The color coordinates of A2 VITA shade were measured in 5 modes: without backing placed in specimen holder, shade tab on the backgrounds #3 and #8, and 1-mm-thick shade tab on the backgrounds #3 and #8. The color difference of each specimen with 3 modes of A2 shade (without backing and on similar backgrounds) was calculated by using the ΔE<sub>00</sub><span> formula, and comparison among groups was performed by using 2-way ANOVA and Tamhane post hoc tests. The comparison of ΔE</span><sub>00</sub> between the values obtained from backgrounds #3 and #8 was performed by using the independent <em>t</em> test (α=.05).</p></div><div><h3>Results</h3><p>In both backgrounds, statistically significant differences were found between the studied groups and VITA shade (<em>P</em><.001). In most situations, the amount of color difference was lowest for the “shade tab on the backgrounds” mode. On background #3, the highest color difference was related to ZLS (6.48 ±0.23), and the lowest values were observed in the PICN group (1.02 ±0.31). On background #8, the highest color difference was related to ZLS compared with the “without backing” mode (8.62 ±0.27), and the lowest values were reported for ZLS compared with the “shade tab on the backgrounds” mode (1.27 ±0.44). The independent <em>t</em> test showed a statistically significant color difference on the 2 different backgrounds for all situations (<em>P</em><.001).</p></div><div><h3>Conclusions</h3><p>Color selection of monolithic ceramics with the VITA Classical shade guide is improved by placing the VITA tabs on a similar background. Background color has a significant effect on the final shade of the monolithic ceramics. Choosing the correct color for LDS, ZLS, and PS-ZLS requires more care than for PICN and zirconia.</p></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparing the color match of monolithic CAD-CAM dental ceramics with the VITA Classical shade guide\",\"authors\":\"\",\"doi\":\"10.1016/j.prosdent.2022.06.024\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Statement of problem</h3><p>Matching the shade selected and the final color of a ceramic restoration is challenging, and studies on matching monolithic ceramics to the shade selected are lacking.</p></div><div><h3>Purpose</h3><p>The purpose of this in vitro study was to compare the color match of monolithic lithium disilicate (LDS), zirconia-reinforced lithium silicate (ZLS), presintered zirconia-reinforced lithium silicate (PS-ZLS), polymer-infiltrated ceramic network (PICN), and multilayer zirconia with the 3 modes of the VITA Classical shade guide.</p></div><div><h3>Material and methods</h3><p>This study was performed on 50 rectangular plates (14×12×1 mm) of 5 types of ceramics with A2 shade (n=10). Zirconia specimens were evaluated in 3 locations: incisal, medial, and cervical thirds. The color coordinates of the specimens of all 7 groups were measured on #3 and #8 Ivoclar Natural Die Color material by using a reflective spectrophotometer. The color coordinates of A2 VITA shade were measured in 5 modes: without backing placed in specimen holder, shade tab on the backgrounds #3 and #8, and 1-mm-thick shade tab on the backgrounds #3 and #8. The color difference of each specimen with 3 modes of A2 shade (without backing and on similar backgrounds) was calculated by using the ΔE<sub>00</sub><span> formula, and comparison among groups was performed by using 2-way ANOVA and Tamhane post hoc tests. The comparison of ΔE</span><sub>00</sub> between the values obtained from backgrounds #3 and #8 was performed by using the independent <em>t</em> test (α=.05).</p></div><div><h3>Results</h3><p>In both backgrounds, statistically significant differences were found between the studied groups and VITA shade (<em>P</em><.001). In most situations, the amount of color difference was lowest for the “shade tab on the backgrounds” mode. On background #3, the highest color difference was related to ZLS (6.48 ±0.23), and the lowest values were observed in the PICN group (1.02 ±0.31). On background #8, the highest color difference was related to ZLS compared with the “without backing” mode (8.62 ±0.27), and the lowest values were reported for ZLS compared with the “shade tab on the backgrounds” mode (1.27 ±0.44). The independent <em>t</em> test showed a statistically significant color difference on the 2 different backgrounds for all situations (<em>P</em><.001).</p></div><div><h3>Conclusions</h3><p>Color selection of monolithic ceramics with the VITA Classical shade guide is improved by placing the VITA tabs on a similar background. Background color has a significant effect on the final shade of the monolithic ceramics. Choosing the correct color for LDS, ZLS, and PS-ZLS requires more care than for PICN and zirconia.</p></div>\",\"PeriodicalId\":16866,\"journal\":{\"name\":\"Journal of Prosthetic Dentistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Prosthetic Dentistry\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022391322004632\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Prosthetic Dentistry","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022391322004632","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
摘要
问题陈述:陶瓷修复体所选色调与最终颜色的匹配具有挑战性,目前还缺乏关于单片陶瓷与所选色调匹配的研究。目的:这项体外研究的目的是比较整体二硅酸锂(LDS)、氧化锆增强硅酸锂(ZLS)、预烧结氧化锆增强硅酸锂(PS-ZLS)、聚合物浸润陶瓷网络(PICN)和多层氧化锆与 VITA 经典色调指南的 3 种模式的颜色匹配情况:研究对象是 50 块矩形板(14×12×1 毫米),5 种陶瓷,A2 色调(n=10)。氧化锆试样在 3 个位置进行评估:切缘、内侧和颈三分之二。使用反射分光光度计测量了所有 7 组试样在 3 号和 8 号 Ivoclar Natural Die Color 材料上的色坐标。在 5 种模式下测量了 A2 VITA 树荫的色坐标:在标本架上不放置衬垫、在 3 号和 8 号背景上放置树荫标签、在 3 号和 8 号背景上放置 1 毫米厚的树荫标签。使用 ΔE00 公式计算了每个试样在 3 种 A2 遮光模式(无衬底和在相似背景上)下的色差,并使用 2 向方差分析和 Tamhane 后检验进行了组间比较。3 号和 8 号背景的 ΔE00 值比较采用独立 t 检验(α=.05):结果:在两个背景中,研究组与 VITA 色调之间存在显著的统计学差异(PConclusions.P.):使用 VITA 经典色调指南对整体陶瓷进行颜色选择时,将 VITA 标签放在相似的背景上会有所改善。背景颜色对整体陶瓷的最终色调有很大影响。与 PICN 和氧化锆相比,为 LDS、ZLS 和 PS-ZLS 选择正确的颜色需要更加谨慎。
Comparing the color match of monolithic CAD-CAM dental ceramics with the VITA Classical shade guide
Statement of problem
Matching the shade selected and the final color of a ceramic restoration is challenging, and studies on matching monolithic ceramics to the shade selected are lacking.
Purpose
The purpose of this in vitro study was to compare the color match of monolithic lithium disilicate (LDS), zirconia-reinforced lithium silicate (ZLS), presintered zirconia-reinforced lithium silicate (PS-ZLS), polymer-infiltrated ceramic network (PICN), and multilayer zirconia with the 3 modes of the VITA Classical shade guide.
Material and methods
This study was performed on 50 rectangular plates (14×12×1 mm) of 5 types of ceramics with A2 shade (n=10). Zirconia specimens were evaluated in 3 locations: incisal, medial, and cervical thirds. The color coordinates of the specimens of all 7 groups were measured on #3 and #8 Ivoclar Natural Die Color material by using a reflective spectrophotometer. The color coordinates of A2 VITA shade were measured in 5 modes: without backing placed in specimen holder, shade tab on the backgrounds #3 and #8, and 1-mm-thick shade tab on the backgrounds #3 and #8. The color difference of each specimen with 3 modes of A2 shade (without backing and on similar backgrounds) was calculated by using the ΔE00 formula, and comparison among groups was performed by using 2-way ANOVA and Tamhane post hoc tests. The comparison of ΔE00 between the values obtained from backgrounds #3 and #8 was performed by using the independent t test (α=.05).
Results
In both backgrounds, statistically significant differences were found between the studied groups and VITA shade (P<.001). In most situations, the amount of color difference was lowest for the “shade tab on the backgrounds” mode. On background #3, the highest color difference was related to ZLS (6.48 ±0.23), and the lowest values were observed in the PICN group (1.02 ±0.31). On background #8, the highest color difference was related to ZLS compared with the “without backing” mode (8.62 ±0.27), and the lowest values were reported for ZLS compared with the “shade tab on the backgrounds” mode (1.27 ±0.44). The independent t test showed a statistically significant color difference on the 2 different backgrounds for all situations (P<.001).
Conclusions
Color selection of monolithic ceramics with the VITA Classical shade guide is improved by placing the VITA tabs on a similar background. Background color has a significant effect on the final shade of the monolithic ceramics. Choosing the correct color for LDS, ZLS, and PS-ZLS requires more care than for PICN and zirconia.
期刊介绍:
The Journal of Prosthetic Dentistry is the leading professional journal devoted exclusively to prosthetic and restorative dentistry. The Journal is the official publication for 24 leading U.S. international prosthodontic organizations. The monthly publication features timely, original peer-reviewed articles on the newest techniques, dental materials, and research findings. The Journal serves prosthodontists and dentists in advanced practice, and features color photos that illustrate many step-by-step procedures. The Journal of Prosthetic Dentistry is included in Index Medicus and CINAHL.