2004 Volume 42 Issue 3 Pages 436-440
The authors felt that the effects of forces of lip closure on the oral function of children plays an important role. We therefore examined the effects of forces of lip closure on the oral functions of children from various angles current as of this time. For the purpose of examining forces of lip closure at various ages, which would become the basis of our study, we selected as our subjects elementary school students and kindergarten children in the city of Nagoya. There were a total of 621 subjects, ranging from 3 to 12 years of age, composed of 316 males, and 305 females. What follows are the results of measuring the forces of lip closure using the LIP DE CUM®(CosmIon struments).
1. No significant differences in forces of lip closure were found between the males and females.
2. As the age increased, forces of lip closure also showed an increase. Significant differences were found in the 3-4 year old,4-5 year old, and 6-7 year old age brackets. No significant differences were found for the other ages.
