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Training kids brush their teeth hardly.
When children stand front a mirror to brush their teeth,
they will see some different colors which is from yellow to white on the toothbrush.
and we want children to compare the colors with their teeth and clean their teeth harder to become white.
It also make some fun when kids clean their own teeth.
Southern Taiwan University of Science and Technology
YongKang City, Taiwan
Southern Taiwan University
Xinying City, Tainan County, Taiwan
Chih Chia Kuo Wun Bing Lin Hao Kai Chen Ching Yi Chen Yi Hsuan Sun