Abstract
Temporomandibular disorders (TMD) have been increasing year by year. In pediatric dentistry, examination of TMD is becoming common. In this study, the maximum amount of mouth opening was examined for 2,852 children (male: 1,300, female: 1,552), from 2 to 18 years of age.
We compared the relationship between the maximum mouth opening with age, height and weight.
The results were as follows;
1. The maximum amount of mouth opening increased with age, and the values were greater in males than in females. It did not increase after 15 years of age in females.
2. The maximum amount of mouth opening increased with height and weight, and except for certain heights and weights, the values were greater in males than in females.
3. Based on age, height and weight, the difference according to sex was more outstanding at the start of puberty in the male.
4. Height showed the highest correlation among age, height and weight.
