[The fabrication and chroma study of a kind of custom shade guide with metal substrate].
OBJECTIVE
This study was to explore the chroma of a custom shade guide with metal substrate.


METHODS
A custom shade guide sample was fabricated using the central maxillary incisor as a model,which was corresponding to the colour of VITAPAN shade guide.The colour of each shade tab was measured with PR-650 spectrophotometer when every porcelain was added.


RESULTS
From the opaque to glaze, the lightness was decreased and the chroma was increased distinctively; When the body porcelain were baked over their corresponding opaque, the lightness was decreased and the chroma was increased; When the enamel porcelain and the translucent porcelain were added on, the lightness and chroma were decreased slightly; the glaze could increase the lightness.


CONCLUSIONS
The "add on" porcelain can affect the final color of the restoration, and the effects of each porcelain layer were different from each other.
Hangzhou Dental Hospital, Hangzhou 310015, Zhejiang Province, China. E-mail:bellchen@163.com
Ling
L
Chen
Xian
X
Liu
Li-qiang
LQ
Xu
Yong-lie
YL
Chao
Wen-fang
WF
Liu
Xiao-fang
XF
Chen
D003116:Color; D003776:Dental Porcelain; D007180:Incisor; D008027:Light; D008670:Metals; D017797:Prosthesis Coloring; D013053:Spectrophotometry
D008670:Metals; D003776:Dental Porcelain