Abstract
Conventional plastic teeth so far used as artificial denture teeth have a disadvantage of reduced esthetics through prolonged wearing because their wear resistance and coloration are both lower than those of porcelain teeth.
In recent years, high-strength plastic teeth have been developed to improve on conventional plastic teeth, and are now applied in clinical practice.
However, decreased esthetics of artificial teeth has been observed in some clinical cases due to discoloration of these high-strength plastic teeth
In this experment, high-strength plastic teeth were immersed in turmeric solution to examine their coloring disposition in vitro.
It was consequently reveal that the coloring disposition of high-strength plastic teeth was slightly lower than of conventional plastic teeth but considerably high as compared with porcelain artificial teeth.In addition, the coloring disposition of artifical teeth for specimen treated with ultrasonic cleaning every day tended to be lower than those which were not cleaned.
