The Growth of Labial-Closure-Strength in Youths Author: Takahashi J 1//Noro A 2//Akihiro Y 3//Takahashi K 2 Affiliation: Dept. of Periodontics, Tokyo Dental College [1]//Operative Dentistry, Tokyo Dental College [2]//Dentistry in Suidobashi Hospital, Tokyo Dental College (Tokyo, Japan) [3] Conference/Journal: J Intl Soc Life Info Science Date published: 2002 Other: Volume ID: 20 , Issue ID: 2 , Pages: 422-425 , Word Count: 58 We have developed an oral cavity rehabilitation apparatus 'Patakala' and labial-closure-strength measuring apparatus 'Lip-de-Cum'. In this study, we measured the labial-closure strength of 3-20yr old subjects and have studied the change of the strength along with physical development. The labial-closure strength was fully developed at the age of 18-20yrs for both males (14N) and females (12N).