The Reliability and Accuracy of Tooth Shade Selection Using Smartphone Cameras
Keywords:
Tooth shade selection, Smartphone camera, SpectrophotometerAbstract
Background: Tooth shade selection is one of the critical steps in dental treatment. Smartphone cameras have been used for tooth shade selection, but the reliability and accuracy of these devices are uncertain.Objective: To evaluate the reliability and accuracy of smartphone cameras, which included Apple iPhone X and Samsung Galaxy S9 plus for human tooth shade selection.Materials and methods: One of maxillary central incisors in 45 participants was captured with both smartphone cameras and color measured with spectrophotometer by using CIE Lab system. The data of L*, a*, b* was analyzed using one-way ANOVA with Tukey Post Hoc comparisons. In addition, ∆E * Lab value of each smartphone camera was calculated and compared with the reference (3.7). Kappa statistic was analyzed for the repeated image from each smartphone. Pearson correlation of L*, a*, b* and ∆E * Lab were also investigated.Results: Photos from both smartphones have high color reliability (Kappa> 0.9). However, the accuracy of the color from smartphone groups have different from spectrophotometer (∆E*Lab>3.7). The brightness of the image (L) significantly affects the accuracy of the color comparison.Conclusion: Smartphone camera provided high reliability in tooth shade selection but low in accuracy. In clinical setting, shade guide is still recommended to be the reference in the photo for better shade selection and communication with dental laboratory.
References
Seal M, Talukdar P, Srivastav V, Pendharkar K. Colour matching: A review of conventional and contemporary dental colour matching systems.International Journal of Oral Care and Research. 2014;2(5):47-53.
Chen H, Huang J, Dong X, Qian J, He J, Qu X, et al. A systematic review of visual and instrumental measurements for tooth shade matching.Quintessence Int. 2012;43(8):649-59.
Tam WK, Lee HJ. Dental shade matching using a digital camera. Journal of Dentistry. 2012;40:3-10.
Bengel W. Mastering digital dental photography. London: Quintessence;2006. p. 246.
Tam W-K, Lee H-J. Accurate shade image matching by using a smartphone camera. Journal of Prosthodontic Research. 2017;61(2):168-76.
Khashayar G, Bain PA, Salari S, Dozic A, Kleverlaan CJ, Feilzer AJ.Perceptibility and acceptability thresholds for colour differences in dentistry. J Dent. 2014;42(6):637-44.
Wozniak WT. Proposed guidelines for the acceptance program for dental shade guides. Chicago: American Dental Association,. 1987:1-2.
Liang C-H, Cheng Y-A, Hong H-H, Hsieh H-C. Stability and Reproducibility of an Amateur Digital Camera for Dental Photography. Journal of Dental Sciences. 2007;2(3):157-63.
Witkowski S, Yajima N-D, Wolkewitz M, Strub JR. Reliability of shade selection using an intraoral spectrophotometer. Clinical Oral Investigations. 2012;16(3):945-9.
Kroger E, Matz S, Dekiff M, Tran BL, Figgener L, Dirksen D. In vitro comparison of instrumental and visual tooth shade determination under different illuminants. J Prosthet Dent. 2015;114(6):848-55.
Johnston WM, Kao EC. Assessment of appearance match by visual observation and clinical colorimetry. J Dent Res. 1989;68(5):819-22.
Sampaio CS, Atria PJ, Hirata R, Jorquera G. Variability of color matching with different digital photography techniques and a gray reference card. J Prosthet Dent. 2018.
Sikri VK. Color: Implications in dentistry. Journal of Conservative Dentistry : JCD. 2010;13(4):249-55.
Elter A, Caniklioğlu B, Değer S, Ozen J. The reliability of digital cameras for color selection. The International journal of prosthodontics.2004;18(5):438-40.
Kim E, Son T, Lee Y, Jung B. Development of polarization dental imaging modality and evaluation of its clinical feasibility. J Dent.2012;40 Suppl 1:e18-25.
Choi J-H, Park J-M, Ahn S-G, Song K-Y, Lee M-H, Jung J-Y, et al.Comparative study of visual and instrumental analyses of shade selection. Journal of Wuhan University of Technology-Mater Sci Ed.2010;25(1):62-7.
Fondriest J. Shade matching in restorative dentistry: the science and strategies. Int J Periodontics Restorative Dent. 2003;23(5):467-79.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 Department of Medical Services, Ministry of Public Health
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
บทความที่ได้รับการตีพิมพ์เป็นลิขสิทธิ์ของกรมการแพทย์ กระทรวงสาธารณสุข
ข้อความและข้อคิดเห็นต่างๆ เป็นของผู้เขียนบทความ ไม่ใช่ความเห็นของกองบรรณาธิการหรือของวารสารกรมการแพทย์
