Effect of the amount of thickness reduction on color and translucency of dental monolithic zirconia ceramics.
- Author:
Hee Kyung KIM
1
;
Sung Hun KIM
;
Jai Bong LEE
;
Jung Suk HAN
;
In Sung YEO
;
Seung Ryong HA
Author Information
- Publication Type:Original Article
- Keywords: Y-TZP ceramic; Color; Dental Prosthesis Coloring
- MeSH: Ceramics*; Prosthesis Coloring
- From:The Journal of Advanced Prosthodontics 2016;8(1):37-42
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: This study investigated the effect of amount of thickness reduction on color and translucency of dental monolithic zirconia ceramics. MATERIALS AND METHODS: One-hundred sixty-five monolithic zirconia specimens (16.3 mm x 16.3 mm x 2.0 mm) were divided into 5 groups (Group I to V) according to the number of A2-coloring liquid applications. Each group was then divided into 11 subgroups by reducing the thickness up to 1.0 mm in 0.1-mm increments (Subgroup 0 to 10, n=3). Colors and spectral distributions were measured according to CIELAB on a reflection spectrophotometer. All measurements were performed on five different areas of each specimen. Color difference (DeltaE*(ab)) and translucency parameter (TP) were calculated. Data were analyzed using one-way ANOVA and multiple comparison Scheffe test (alpha=.05). RESULTS: There were significant differences in CIE L* between Subgroup 0 and other subgroups in all groups. CIE a* increased (0.52
