Color stability of three dimensional-printed denture teeth exposed to various colorants
Eun-Sol Koh, Hyun‐Suk Cha, Tae Hyung Kim, Jin‐Soo Ahn, Joo-Hee Lee
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 37C. Color change (E) 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 (E = 0.67 0.25) after 1 week; Artic 6 (E = 1.44 0.38) and Premium 6 (E = 1.69 0.35) after 2 weeks; and Surpass (E = 1.79 0.49), Artic 6 (E = 2.07 0.21), Premium 6 (E = 2.03 0.75), and Preference (E = 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 E for Dentca denture teeth was within the clinically acceptable range.