Automatic Analysis of Lateral Cephalograms Based on Multiresolution Decision Tree Regression Voting

Table 9

Eight standard cephalometric measurement methods for classification of anatomical types [28].

No.	Measurement	Type 1	Type 2	Type 3	Type 4
1	ANB	3.2°∼5.7° class I (normal)	>5.7° class II	<3.2° class III	—
2	SNB	74.6°∼78.7° normal mandible	<74.6° retrognathic mandible	>78.7° prognathic mandible	—
3	SNA	79.4°∼83.2° normal maxilla	>83.2° prognathic maxilla	<79.4° retrognathic maxilla	—
4	ODI	Normal: 74.5° ± 6.07°	>80.5° deep bite tendency	<68.4° open bite tendency	—
5	APDI	Normal: 81.4° ± 3.8°	<77.6° class II tendency	>85.2° class III tendency	—
6	FHI	Normal: 0.65∼0.75	>0.75 short face tendency	<0.65 long face tendency	—
7	FHA	Normal: 26.8°∼31.4°	>31.4° mandible high angle tendency	<26.8° mandible lower angle tendency	—
8	MW	Normal: 2 mm∼4.5 mm	MW = 0 mm edge to edge	MW <0 mm anterior cross bite	MW >4.5 mm large over jet