J Korean Acad Prosthodont.  2020 Jan;58(1):1-6. 10.4047/jkap.2020.58.1.1.

Color stability of three dimensional-printed denture teeth exposed to various colorants

• Koh ES
• Cha HS
• Kim TH
• Ahn JS
• Lee JH

• KMID: 2469914
• DOI: http://doi.org/10.4047/jkap.2020.58.1.1

Abstract

PURPOSE
This study evaluated color stability of Dentca 3D-printed denture teeth, in comparison to color stabilities of four conventional types of denture teeth, upon being immersed in various colorants.
MATERIALS AND METHODS
Four types of conventional prefabricated denture teeth (Surpass, GC, Artic 6, Heraeus Kulzer, Premium 6, Heraeus Kulzer, Preference, Candulor), 3D-printed denture teeth (Dentca); and Z250 (Filtek Z250, 3M ESPE) were prepared for testing. The samples were immersed in erythrosine 3%, coffee, cola, and distilled water (DW) at 37℃. Color change (ΔE) was measured by spectrophotometer before immersion and at 7, 14, and 21 days after immersion. One-way analysis of variance was performed along with Tukey's honestly significant difference multiple comparisons test (P<.05).
RESULTS
No great difference was observed between the color change of Dentca denture teeth and that of conventional denture teeth in most cases (P>.05). The color change of Dentca denture teeth immersed in erythrosine 3% was greater than that of Surpass (ΔE = 0.67 ± 0.25) after 1 week; Artic 6 (ΔE = 1.44 ± 0.38) and Premium 6 (ΔE = 1.69 ± 0.35) after 2 weeks; and Surpass (ΔE = 1.79 ± 0.49), Artic 6 (ΔE = 2.07 ± 0.21), Premium 6 (ΔE = 2.03 ± 0.75), and Preference (ΔE = 2.01 ± 0.75) after 3 weeks (P<.05).
CONCLUSION
A color change was observed in Dentca denture teeth when immersed in some colorants; however, the maximum value of ΔE for Dentca denture teeth was within the clinically acceptable range.

Keyword

3-D printing; Colorants; Color stability; Denture teeth; Spectrophotometer

MeSH Terms

Coffee
Cola
Dentures*
Erythrosine
Immersion
Printing, Three-Dimensional
Tooth*
Water
Coffee
Erythrosine
Water

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