The Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study

This study aimed to investigate and compare the reliability and accuracy of tooth shade selection in the model using 30 milled crowns via five methods: (1) digital single-lens reflex (DSLR) camera with twin flash (TF) and polarized filter (DSLR + TF), (2) DSLR camera with a ring flash (RF) and polar...

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Autores principales:	Nattapong Sirintawat, Tanyaporn Leelaratrungruang, Pongsakorn Poovarodom, Sirichai Kiattavorncharoen, Parinya Amornsettachai
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	shade selection color determination accuracy photography light dental esthetics Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/bba04dc6750947cfb3395ead23db4fb7
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spelling	oai:doaj.org-article:bba04dc6750947cfb3395ead23db4fb72021-11-25T18:56:51ZThe Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study10.3390/s212274901424-8220https://doaj.org/article/bba04dc6750947cfb3395ead23db4fb72021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7490https://doaj.org/toc/1424-8220This study aimed to investigate and compare the reliability and accuracy of tooth shade selection in the model using 30 milled crowns via five methods: (1) digital single-lens reflex (DSLR) camera with twin flash (TF) and polarized filter (DSLR + TF), (2) DSLR camera with a ring flash (RF) and polarized filter (DSLR + RF), (3) smartphone camera with light corrector and polarized filter (SMART), (4) intraoral scanner (IOS), and (5) spectrophotometer (SPEC). These methods were compared with the control group or manufacturer’s shade. The CIE Lab values (L, a, and b values) were obtained from five of the methods to indicate the color of the tooth. Adobe Photoshop was used to generate CIE Lab values from the digital photographs. The reliability was calculated from the intraclass correlation based on two repetitions. The accuracy was calculated from; (a) ΔE calculated by the formula comparing each method to the control group, (b) study and control groups were analyzed by using the Kruskal–Wallis test, and (c) the relationship between study and control groups were calculated using Spearman’s correlation. The reliability of the intraclass correlation of L, a, and b values obtained from the five methods showed satisfactory correlations ranging from 0.732–0.996, 0.887–0.994, and 0.884–0.999, respectively. The ΔE from all groups had statistically significant differences when compared to the border of clinical acceptance (ΔE = 6.8). The ΔE from DSLR + TF, DSLR + RF, SMART, and SPEC were higher than clinical acceptance (ΔE > 6.8), whereas the ΔE from IOS was 5.96 and all of the L, a, and b values were not statistically significantly different from the manufacturer’s shade (<i>p</i> < 0.01). The ΔE of the DSLR + RF group showed the least accuracy (ΔE = 19.98), whereas the ∆E of DSLR + TF, SMART, and SPEC showed similar accuracy ∆E (ΔE = 10.90, 10.57, and 11.57, respectively). The DSLR camera combined with a ring flash system and polarized filter provided the least accuracy. The intraoral scanner provided the highest accuracy. However, tooth shade selection deserves the combination of various techniques and a professional learning curve to establish the most accurate outcome.Nattapong SirintawatTanyaporn LeelaratrungruangPongsakorn PoovarodomSirichai KiattavorncharoenParinya AmornsettachaiMDPI AGarticleshade selectioncolor determinationaccuracyphotographylightdental estheticsChemical technologyTP1-1185ENSensors, Vol 21, Iss 7490, p 7490 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	shade selection color determination accuracy photography light dental esthetics Chemical technology TP1-1185
spellingShingle	shade selection color determination accuracy photography light dental esthetics Chemical technology TP1-1185 Nattapong Sirintawat Tanyaporn Leelaratrungruang Pongsakorn Poovarodom Sirichai Kiattavorncharoen Parinya Amornsettachai The Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study
description	This study aimed to investigate and compare the reliability and accuracy of tooth shade selection in the model using 30 milled crowns via five methods: (1) digital single-lens reflex (DSLR) camera with twin flash (TF) and polarized filter (DSLR + TF), (2) DSLR camera with a ring flash (RF) and polarized filter (DSLR + RF), (3) smartphone camera with light corrector and polarized filter (SMART), (4) intraoral scanner (IOS), and (5) spectrophotometer (SPEC). These methods were compared with the control group or manufacturer’s shade. The CIE Lab values (L, a, and b values) were obtained from five of the methods to indicate the color of the tooth. Adobe Photoshop was used to generate CIE Lab values from the digital photographs. The reliability was calculated from the intraclass correlation based on two repetitions. The accuracy was calculated from; (a) ΔE calculated by the formula comparing each method to the control group, (b) study and control groups were analyzed by using the Kruskal–Wallis test, and (c) the relationship between study and control groups were calculated using Spearman’s correlation. The reliability of the intraclass correlation of L, a, and b values obtained from the five methods showed satisfactory correlations ranging from 0.732–0.996, 0.887–0.994, and 0.884–0.999, respectively. The ΔE from all groups had statistically significant differences when compared to the border of clinical acceptance (ΔE = 6.8). The ΔE from DSLR + TF, DSLR + RF, SMART, and SPEC were higher than clinical acceptance (ΔE > 6.8), whereas the ΔE from IOS was 5.96 and all of the L, a, and b values were not statistically significantly different from the manufacturer’s shade (<i>p</i> < 0.01). The ΔE of the DSLR + RF group showed the least accuracy (ΔE = 19.98), whereas the ∆E of DSLR + TF, SMART, and SPEC showed similar accuracy ∆E (ΔE = 10.90, 10.57, and 11.57, respectively). The DSLR camera combined with a ring flash system and polarized filter provided the least accuracy. The intraoral scanner provided the highest accuracy. However, tooth shade selection deserves the combination of various techniques and a professional learning curve to establish the most accurate outcome.
format	article
author	Nattapong Sirintawat Tanyaporn Leelaratrungruang Pongsakorn Poovarodom Sirichai Kiattavorncharoen Parinya Amornsettachai
author_facet	Nattapong Sirintawat Tanyaporn Leelaratrungruang Pongsakorn Poovarodom Sirichai Kiattavorncharoen Parinya Amornsettachai
author_sort	Nattapong Sirintawat
title	The Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study
title_short	The Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study
title_full	The Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study
title_fullStr	The Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study
title_full_unstemmed	The Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study
title_sort	accuracy and reliability of tooth shade selection using different instrumental techniques: an in vitro study
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/bba04dc6750947cfb3395ead23db4fb7
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The Accuracy and Reliability of Tooth Shade Selection Using Different Instrumental Techniques: An In Vitro Study

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