{"title":"牙龈颜色对牙科层压贴面色差的影响。","authors":"","doi":"10.1016/j.prosdent.2024.06.003","DOIUrl":null,"url":null,"abstract":"<div><h3>Statement of problem</h3><p>The effect of various gingival colors on the color differences of laminate veneers is unclear and comparative evaluations should be documented.</p></div><div><h3>Purpose</h3><p>The purpose of this in vitro study was to investigate the influence of different gingival colors on the color differences of laminate veneers.</p></div><div><h3>Material and methods</h3><p><span>Five maxillary typodonts were used to obtain study models using 5 different gingival colors: light pink (LP), dark pink (DP), orange (Or), brown (Br), and violet (V). A total of 45 laminate veneers were milled using A1-shaded lithium disilicate ceramic and cemented on natural tooth-colored substrates. Color parameters were assessed using a spectroradiometer at 3 measurement areas (cervical third, mid-third, and incisal third) along the midline of laminate veneer with a focus measuring diameter of 1 mm. Color differences (∆E*</span><sub>ab</sub> and ∆E<sub>00</sub>) were calculated and compared with perceptibility (PT: ∆E*<sub>ab</sub>=1.22, ΔE<sub>00</sub>=0.81) and acceptability (AT: ∆E*<sub>ab</sub>=2.66, ΔE<sub>00</sub><span>=1.77) visual thresholds. Color variation data were statistically analyzed using 2-way ANOVA and Tukey HSD tests (α=.05).</span></p></div><div><h3>Results</h3><p>Two-way ANOVA results of the ∆E*<sub>ab</sub> values revealed significant interaction between the gingival color and the measurement area (<em>P</em>=.002). The ∆E*<sub>ab</sub> and ΔE<sub>00</sub> values of laminate veneers were significantly higher in the LP-V group that presented values above AT (<em>P</em><.001). Measurement area significantly influenced ∆E values of laminate veneers (<em>P</em><.001). Greater ∆E values were registered at the measurement area of the cervical third in the groups of LP-DP, LP-Br, LP-V, and Or-V. Regardless of the measurement area, ∆E<sub>00</sub> values below AT were obtained for the gingival color groups of LP-Or, DP-Or, DP-Br, and DP-V.</p></div><div><h3>Conclusions</h3><p>Gingival color influenced the color differences of laminate veneers. When the gingival color was a darker gingival color, rather than light pink, the color difference increased, especially at the measurement area of the cervical third.</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\":\"Influence of gingival color on the color differences of dental laminate veneers\",\"authors\":\"\",\"doi\":\"10.1016/j.prosdent.2024.06.003\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Statement of problem</h3><p>The effect of various gingival colors on the color differences of laminate veneers is unclear and comparative evaluations should be documented.</p></div><div><h3>Purpose</h3><p>The purpose of this in vitro study was to investigate the influence of different gingival colors on the color differences of laminate veneers.</p></div><div><h3>Material and methods</h3><p><span>Five maxillary typodonts were used to obtain study models using 5 different gingival colors: light pink (LP), dark pink (DP), orange (Or), brown (Br), and violet (V). A total of 45 laminate veneers were milled using A1-shaded lithium disilicate ceramic and cemented on natural tooth-colored substrates. Color parameters were assessed using a spectroradiometer at 3 measurement areas (cervical third, mid-third, and incisal third) along the midline of laminate veneer with a focus measuring diameter of 1 mm. Color differences (∆E*</span><sub>ab</sub> and ∆E<sub>00</sub>) were calculated and compared with perceptibility (PT: ∆E*<sub>ab</sub>=1.22, ΔE<sub>00</sub>=0.81) and acceptability (AT: ∆E*<sub>ab</sub>=2.66, ΔE<sub>00</sub><span>=1.77) visual thresholds. Color variation data were statistically analyzed using 2-way ANOVA and Tukey HSD tests (α=.05).</span></p></div><div><h3>Results</h3><p>Two-way ANOVA results of the ∆E*<sub>ab</sub> values revealed significant interaction between the gingival color and the measurement area (<em>P</em>=.002). The ∆E*<sub>ab</sub> and ΔE<sub>00</sub> values of laminate veneers were significantly higher in the LP-V group that presented values above AT (<em>P</em><.001). Measurement area significantly influenced ∆E values of laminate veneers (<em>P</em><.001). Greater ∆E values were registered at the measurement area of the cervical third in the groups of LP-DP, LP-Br, LP-V, and Or-V. Regardless of the measurement area, ∆E<sub>00</sub> values below AT were obtained for the gingival color groups of LP-Or, DP-Or, DP-Br, and DP-V.</p></div><div><h3>Conclusions</h3><p>Gingival color influenced the color differences of laminate veneers. When the gingival color was a darker gingival color, rather than light pink, the color difference increased, especially at the measurement area of the cervical third.</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/S0022391324004190\",\"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/S0022391324004190","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}
Influence of gingival color on the color differences of dental laminate veneers
Statement of problem
The effect of various gingival colors on the color differences of laminate veneers is unclear and comparative evaluations should be documented.
Purpose
The purpose of this in vitro study was to investigate the influence of different gingival colors on the color differences of laminate veneers.
Material and methods
Five maxillary typodonts were used to obtain study models using 5 different gingival colors: light pink (LP), dark pink (DP), orange (Or), brown (Br), and violet (V). A total of 45 laminate veneers were milled using A1-shaded lithium disilicate ceramic and cemented on natural tooth-colored substrates. Color parameters were assessed using a spectroradiometer at 3 measurement areas (cervical third, mid-third, and incisal third) along the midline of laminate veneer with a focus measuring diameter of 1 mm. Color differences (∆E*ab and ∆E00) were calculated and compared with perceptibility (PT: ∆E*ab=1.22, ΔE00=0.81) and acceptability (AT: ∆E*ab=2.66, ΔE00=1.77) visual thresholds. Color variation data were statistically analyzed using 2-way ANOVA and Tukey HSD tests (α=.05).
Results
Two-way ANOVA results of the ∆E*ab values revealed significant interaction between the gingival color and the measurement area (P=.002). The ∆E*ab and ΔE00 values of laminate veneers were significantly higher in the LP-V group that presented values above AT (P<.001). Measurement area significantly influenced ∆E values of laminate veneers (P<.001). Greater ∆E values were registered at the measurement area of the cervical third in the groups of LP-DP, LP-Br, LP-V, and Or-V. Regardless of the measurement area, ∆E00 values below AT were obtained for the gingival color groups of LP-Or, DP-Or, DP-Br, and DP-V.
Conclusions
Gingival color influenced the color differences of laminate veneers. When the gingival color was a darker gingival color, rather than light pink, the color difference increased, especially at the measurement area of the cervical third.
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.