Table 2 Classification criteria of each skeletal types

Class I

Class I

Class I

1° ≤ ANB ≤ 5°

1° ≤ ANB ≤ 5°

1° ≤ ANB ≤ 5°

Hypodivergent

Normodivergent

Hyperdivergent

Conform to 2 or more items:

SN-MP < 24°;

FH-MP < 22°;

P-A face height < 62%

Conform to 2 or more items:

24 ≤ SN-MP ≤ 36°;

22 ≤ FH-MP ≤30°;

62% ≤ P-A face height ≤ 65%

Conform to 2 or more items:

SN-MP > 36°;

FH-MP > 30°;

P-A face height > 65%