[Study on the matching of the shade between beverage and modifying porcelain shade guide].
OBJECTIVE
To evaluate the matching of the shade between beverage and modifying porcelain shade guide according to Munsell color order system, thus to provide the reference basis for selecting modifying porcelain to mimic the stain of natural tooth by technician.


METHODS
The shade of Vita Akzent, Vita Interno, Shofu Vintage & Unibond and Noritake Super Porcelain EX-3 shade tabs as well as 15 kinds of beverage were measured according to Munsell color order system on Color-Eye 7000A spectrophotometer. The difference of the frequency of approximate hue, value, and chroma between shade tabs and beverage were compared by calculating the Fisher exact probabilities.


RESULTS
The frequency of approximate hue between 4 kinds of shade tabs and 15 kinds of bev-erage was significant different (P<0.05), while the frequency of approximate value, and chroma was not significant different (P>0.05).


CONCLUSIONS
Except the hue, the color distribution of 4 kinds of shade tabs was similar to that of 15 kinds of beverage. But the color of beverage also can be approximately matched by any kind of modifying porcelain by mixing porcelain powder of appropriate hue, value, and chroma.
Yao
Jiang-wu
JW
Department of Prosthodontics, Xiamen Dental Hospital, Xiamen 361003, China.
Li
Shui-gen
SG
Lin
Jin-ying
JY
D001628:Beverages; D003116:Color; D003124:Colorimetry; D003776:Dental Porcelain; D017797:Prosthesis Coloring
D003776:Dental Porcelain