Journal of Korean society of Dental Hygiene 2023 KCI Impact Factor : 0.8
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pISSN : 2287-1705 / eISSN : 2288-2294
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Effect of CAD/CAM ceramic thickness on shade
- Journal of Korean society of Dental Hygiene
- Abbr : J Korean Soc Dent Hyg
- 2016, 16(5), pp.695-700
- Publisher : Korean Society of Dental Hygiene
- Research Area : Medicine and Pharmacy > Dentistry
Kang Wol
1,
Han Man So
2,
Kim Ji Hwan
1
1고려대학교
2대전보건대학교
Accredited
ABSTRACT
Objectives: The purpose of the study was to investigate the effect of CAD/CAM ceramic thickness on shade.
Methods: 24 disk-shaped ceramic specimens (E.Max CAD & Empress CAD, 12 mm × 12 mm) were prepared and divided into 4 groups (n=6). Ceramic specimens in 2 thicknesses (0.8 mm, 1.0 mm) were made low translucency(LT) shade A2. All specimens were measured as L*, a*, b* using spectrophotometer. The color differences(∆E values) between the specimen and a control target block (12 × 12 × 1.2 mm) were calculated. Two-way ANOVA performed between 2 groups(material and thickness).
Results: As the thickness increased, the L* (for all groups) and b* value (for all groups) increased and the a* value(for LR group) decreased.
The mean color differences caused by thickness was acceptible (ΔE > 2) for group LD1. But the mean color differences by thickness were not selected (ΔE < 2) for group LD2, LR1, LR2.
Conclusions: The different thickness can influence the final color of CAD/CAM ceramic.
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