Color Comparison of tetracycline teeth restored with all-cerami and metal-porcelain crown

Great population of people who were born during 1960°¯s to 1970°¯s in China was found tetracycline teeth. Our purpose of study is to compare the esthetic results of tetracycline teeth restore with all-ceramic and metal-base porcelain crown. Materials and Methods: All-ceramic and metal-base porcelain crowns (LAMINA porcelain powder and VINTAGE metal-bond porcelain powder, SHOFU INC) with same shade were separately made for 120 tetracycline teeth from 21 patients. These tetracycline teeth were separated into three groups, which are light, moderate and dark according to the color. The metal crowns were put on the prepared teeth without cement and matched the colors. All-ceramic crowns with Calibra (Densply) try-in paste in the same group were then also matched the color. Shade Eye (SHOFU INC) dental chrome meter was used to compare the color differences of these two kinds of restorations in the three groups. Shade, value and hue of the all-ceramic and metal ¨Cbase porcelain crowns were also measured. Also we got the results of color satisfaction from the patient just by eye observation. Results: There are significant color differences (P<0.05) in three groups both by Shade Eye dental chrome meter and by patient°¯s eye observation. And the patients with light and moderate tetracycline teeth were more satisfied with all-ceramic crowns than metal-base porcelain crown. The patients with dark tetracycline teeth have almost same satisfactions in both types of crown. Conclusion: All-ceramic and metal-base porcelain crown have different results in esthetic dentistry. The success in choosing restoration type is based on the doctor°¯s experiences and the color of the patient°¯s teeth.