{"title":"用色度适应变换评估天然牙齿和氧化锆修复体之间的照度偏色。","authors":"Sascha Hein MDT , Stephen Westland PhD","doi":"10.1016/j.prosdent.2023.07.035","DOIUrl":null,"url":null,"abstract":"<div><h3>Statement of problem</h3><div>Little is known about the effect of illuminant metamerism between natural teeth and zirconia restorations, despite their increasing clinical popularity.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to compare illuminant metamerism between pairs of natural teeth and layered zirconia restorations and pairs of natural teeth and monolithic zirconia restorations under 10 different illuminants and analyze their metameric potential.</div></div><div><h3>Material and methods</h3><div>Spectral reflectance factors were obtained from 10 pairs of extracted natural teeth and layered zirconia restorations and 28 pairs of extracted natural teeth and monolithic multilayer zirconia restorations. Each pair showed a color match that was within the visual threshold for clinical acceptability (CIEDE2000≤1.8). A special index of metamerism for the change of illuminant (<em>M</em><sub>ilm</sub>) was calculated from the CIEDE2000 color difference equation. Descriptive statistics and the one-sample <em>t</em> test were used to analyze the results for the <em>M</em><sub>ilm</sub> and for both groups of layered and monolithic zirconia restorations (α=.05).</div></div><div><h3>Results</h3><div>Layered zirconia restorations reached a mean ±standard deviation value for <em>M</em><sub>ilm</sub>=0.3 ±0.2 and <em>M</em><sub>ilm</sub>=0.5 ±0.4 for monolithic zirconia restorations (<em>P</em><.01).</div></div><div><h3>Conclusions</h3><div>The effect of illuminant metamerism between natural teeth and zirconia crowns was weak and generally within the clinical acceptability limit.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 1020-1027"},"PeriodicalIF":4.3000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Illuminant metamerism between natural teeth and zirconia restorations evaluated with a chromatic adaptation transform\",\"authors\":\"Sascha Hein MDT , Stephen Westland PhD\",\"doi\":\"10.1016/j.prosdent.2023.07.035\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Statement of problem</h3><div>Little is known about the effect of illuminant metamerism between natural teeth and zirconia restorations, despite their increasing clinical popularity.</div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to compare illuminant metamerism between pairs of natural teeth and layered zirconia restorations and pairs of natural teeth and monolithic zirconia restorations under 10 different illuminants and analyze their metameric potential.</div></div><div><h3>Material and methods</h3><div>Spectral reflectance factors were obtained from 10 pairs of extracted natural teeth and layered zirconia restorations and 28 pairs of extracted natural teeth and monolithic multilayer zirconia restorations. Each pair showed a color match that was within the visual threshold for clinical acceptability (CIEDE2000≤1.8). A special index of metamerism for the change of illuminant (<em>M</em><sub>ilm</sub>) was calculated from the CIEDE2000 color difference equation. Descriptive statistics and the one-sample <em>t</em> test were used to analyze the results for the <em>M</em><sub>ilm</sub> and for both groups of layered and monolithic zirconia restorations (α=.05).</div></div><div><h3>Results</h3><div>Layered zirconia restorations reached a mean ±standard deviation value for <em>M</em><sub>ilm</sub>=0.3 ±0.2 and <em>M</em><sub>ilm</sub>=0.5 ±0.4 for monolithic zirconia restorations (<em>P</em><.01).</div></div><div><h3>Conclusions</h3><div>The effect of illuminant metamerism between natural teeth and zirconia crowns was weak and generally within the clinical acceptability limit.</div></div>\",\"PeriodicalId\":16866,\"journal\":{\"name\":\"Journal of Prosthetic Dentistry\",\"volume\":\"132 5\",\"pages\":\"Pages 1020-1027\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-11-01\",\"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/S0022391323005425\",\"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/S0022391323005425","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}
Illuminant metamerism between natural teeth and zirconia restorations evaluated with a chromatic adaptation transform
Statement of problem
Little is known about the effect of illuminant metamerism between natural teeth and zirconia restorations, despite their increasing clinical popularity.
Purpose
The purpose of this in vitro study was to compare illuminant metamerism between pairs of natural teeth and layered zirconia restorations and pairs of natural teeth and monolithic zirconia restorations under 10 different illuminants and analyze their metameric potential.
Material and methods
Spectral reflectance factors were obtained from 10 pairs of extracted natural teeth and layered zirconia restorations and 28 pairs of extracted natural teeth and monolithic multilayer zirconia restorations. Each pair showed a color match that was within the visual threshold for clinical acceptability (CIEDE2000≤1.8). A special index of metamerism for the change of illuminant (Milm) was calculated from the CIEDE2000 color difference equation. Descriptive statistics and the one-sample t test were used to analyze the results for the Milm and for both groups of layered and monolithic zirconia restorations (α=.05).
Results
Layered zirconia restorations reached a mean ±standard deviation value for Milm=0.3 ±0.2 and Milm=0.5 ±0.4 for monolithic zirconia restorations (P<.01).
Conclusions
The effect of illuminant metamerism between natural teeth and zirconia crowns was weak and generally within the clinical acceptability limit.
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.
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