Instrumental Color Evaluation of Ceramic Materials by Using Two Dental Spectrophotometers

Abstract:

Objectives: The aim of the present study was to evaluate the precision of two dental spectrophotometers in evaluating the color parameters of ceramic materials and to assess the accuracy of a dental spectrophotometer (Shade Pilot, Degudent) for analyzing color parameters of lithium-disilicate ceramic materials. Methods: The CIE L*a*b* color parameters, chroma and hue angle of 6 groups of lithium-disilicate ceramic ingots were recorded: MO0, HO0, LTA1, HTA1, LTBL1, HTBL. The measurements were performed in a viewing-booth under a D65 illuminant. Statistical analysis was performed to assess the precision and differences between the two color-measuring devices. Results: Significant differences were found between all color parameters recorded (p<0.001). The difference varied depending on the type of ceramic ingot assessed. The HO0 ingot showed the highest color difference (ΔE=19.18), while the smallest color difference was found for the MO0 ingot (ΔE=5.62). Conclusions: Color parameters of ceramic materials can be recorded with both color-measuring devices, the VEA showing the highest precision.

• Periodical: Key Engineering Materials (Volume 614)
• Pages: 118-123
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.614.118
• Online since: June 2014
• Authors: Cristina Gasparik*, Alexandra Botos, Bogdan Culic, Mindra Badea, Diana Dudea
• Keywords: Color Parameters, Lithium-Disilicate Ceramic, Spectrophotometry

References

[1] Paravina RD. Performance assessment of dental shade guides. J Dent 2009; 37(S): e15-e20.

DOI: 10.1016/j.jdent.2009.02.005

[2] Karamouzos A, Papadoupoulos MA, Kolokithas G, Athanasiou AE. Precision of in vivo spectrophotometric colour evaluation of natural teeth. J Oral Rehab 2007; 34: 613–21.

DOI: 10.1111/j.1365-2842.2007.01744.x

[3] Chu SJ, Trushkowsky RD, Paravina RD. Dental color matching instruments and systems. Review of clinical and research aspects. J Dent 2010; 38(S): e2–e16.

DOI: 10.1016/j.jdent.2010.07.001

[4] Dozic A, DDS, Kleverlaan JC, El-Zohairy A, Feilzer AJ, Khashayar G. Performance of Five Commercially Available Tooth Color-Measuring Devices. J Prosthod 2007; 2(16): 93-100.

DOI: 10.1111/j.1532-849x.2007.00163.x

[5] Seghi RR, Hewlett ER, Kim J. Visual and instrumental colorimetric assessments of small color differences on translucent dental porcelain. J Dent Res 1989; 68: 1760-4.

DOI: 10.1177/00220345890680120801

[6] Kim-Pusateri S, Brewer JD, Davis EL, Wee AG. Reliability and accuracy of four dental shade-matching devices. J Prosthet Dent 2009; 101: 193-9.

DOI: 10.1016/s0022-3913(09)60028-7

[7] Wee AG, Lindsey DT, Kuoa S, Johnston WM. Color accuracy of commercial digital cameras for use in dentistry. Dent Mater 2006; 22: 553–9.

DOI: 10.1016/j.dental.2005.05.011

[8] Lim HN, Yu B, Lee YK. Spectroradiometric and spectrophotometric translucency of ceramic materials. J Prosthet Dent 2010; 104: 239-46.

[9] Olms C, Setz JM. The repeatability of digital shade measurement—a clinical study. Clin Oral Invest 2013; 17: 1161–6.

DOI: 10.1007/s00784-012-0796-z

[10] Ishikawa-Nagai S, Yoshida A, Sakai M, Kristiansen J, Da Silva JD. Clinical evaluation of perceptibility of color differences between natural teeth and all-ceramic crowns. J Dent 2009; 39(S): e57-e63.

DOI: 10.1016/j.jdent.2009.04.004

[11] Turgut S, Bagis B. Color stability of laminate veneers: An in vitro study. J Dent 2011; 39(S): e57-e64.

DOI: 10.1016/j.jdent.2011.11.006

[12] IPS e. max Technical product file: http: /www. ivoclarvivadent. com.

[13] Joiner A. Tooth colour: a review of the literature. J Dent 2004; 32: 3-12.

[14] Khurana R, Tredwin CJ, Weisbloom M, Moles DR. A clinical evaluation of the individual repeatability of three commercially available colour measuring devices. BDJ 2007; 12(203): 675-80.

DOI: 10.1038/bdj.2007.1108