In Vitro Evaluation of New Dental Software for Shade Matching

Abstract:

In this study we evaluate a new computer software developed for determining tooth color parameters obtained from digital images taken in a general practice working conditions. In order to evaluate the accuracy of the program, we used as samples dental shade tabs. The tabs were measured using a dental spectrophotometer, and then photographed and measured using our program (Toodent). L, a, b values of the CIE Lab color space were obtained. The results were also automatically expressed in dental shade tab code. The results analysis was made by comparing the L, a, b values obtained by the program, with spectrophotometer ones taken from the same shade tab. A statistical indicator was created in order to evaluate the accuracy of the program. Further evaluation of the program shall be made, in order to be used in routine clinical color selection.

• Periodical: Key Engineering Materials (Volume 587)
• Pages: 360-365
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.587.360
• Online since: November 2013
• Authors: Bogdan Culic, Vasile Prejmerean, Cristina Gasparik, Carina Culic, Cristian Dragos, Diana Dudea
• Keywords: CIELab, Color Parameters, Dental Color, Digital Photography, Spectrophotometer

References

[1] Alvin G. Weea, Delwin T. Lindseyb, ShanglunKuoa, and William M. Johnston. Color accuracy of commercial digital cameras for use in dentistry, Dent Mater. 2006; 22(6): 553–559.

[2] Jain A.K., Fundamentals of digital image processing, Prentice-Hall, London, (1989).

[3] Douglas RD, Steinhauer TJ, Wee AG. Intraoral determination of the tolerance of dentists for perceptibility and acceptability of shade mismatch. Journal of Prosthetic Dentistry 2007; 97: 200–8.

DOI: 10.1016/j.prosdent.2007.02.012

[4] Paravina RD, Powers JM. Esthetic Color Training in Dentistry. Mosby, St. Louis, (2004).

[5] Billmeyer F. W., Jr., M. Saltzman. Principles of Color Technology, 2nd edition, John Wiley & Sons, Inc., New York, (1981).

[6] Hayashi T., Medical Color Standard. V. Tooth Crown, Tokyo, 1967, Japan, Color Research Institute.

[7] Chu SJ, Devigus A, Mieleszo A., Fundamentals of color: shade matching and communication in esthetic dentistry. Tokyo, Quintessence Publ. Co, (2004).

[8] Berns RF., (Billmeyer and Saltzman's Principles of Colour Technology, New York:, ed. 3. Wiley, pp.75-104, (2000).

[9] CIE 1971, International Commission on Illumination. Colorimetry: Official Recommendations of the International Commission on Illumination. Publication CIE No. 15 (E-1. 3. 1) 1971, Bureau Central de la CIE, Paris, (1971).

DOI: 10.25039/cie.ds.hjfjmt59

[10] Sproul RC, Color matching in dentistry. Part I. The three dimensional nature of color. Practical applications of the organization of color. Journ. Prosthet Dent, 5: 453-457, (2001).

DOI: 10.1067/mpr.2001.119827

[11] W.K. Tam, H.J. Lee, Dental shade matching using a digital camera, Journal of Color and Appearance in Dentistry 2012, Volume 40, Supplement 2: 3-10.

[12] Denissen H., DozicA. PhotometricAssesmentof Tooth Color Using Commonly Available Software. European journal of Esthetic Dentistry; 5(2): 204-215.

[13] Takatsui Fabiana, Andrade Marcelo Ferrarezi de, NeisserMaximiliano Piero, Barros Luiz Antônio Borelli, Loffredo Leonor de Castro Monteiro. CIE L*a*b*: comparison of digital images obtained photographically by manual and automatic modes. Braz. oral res., 2012  Dec, 26(6): 578-583.

DOI: 10.1590/s1806-83242012005000025