学前儿童刷牙

***DATED 14.09.12***

Tooth brushing is form of hygiene,

in which a person cleans their teeth with a toothbrush.

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Related Post:

http://sjkcbb.blogspot.com/2011/02/pre-school-education.html

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http://en.wikipedia.org/wiki/Tooth_brushing

http://www.colgate.com/app/CP/US/EN/OC/Information/Articles/Oral-and-Dental-Health-Basics/Oral-Hygiene/Brushing-and-Flossing/article/How-to-Brush.cvsp