Relationship between Cervical Spine and Skeletal Class II in Subjects with and without Temporomandibular Disorders

Table 2

Absolute and percent frequencies of the C0-C1 distance value for each ANB score. ANB scores are 5 to 9°/10°. C0-C1 values are divided into abnormally low, normal, and abnormally high. Class II is divided on the basis of the presence or not of TMD.

TMD	ANB	C0-C1 space
	Value	Abnormally low (<4.5 mm)	Normal	Abnormally high (>4.5 mm)	Total.
Absent	5	2	14	1	17
	6	1	2	5	8
	7	0	3	1	4
	9	0	4	0	4
	Total	3	23	7	33
		0.09	0.70	0.21	1.0
Present	5	6	8	0	14
	6	3	4	2	9
	7	0	1	0	1
	9	0	1	0	1
	10	0	1	0	1
	Total	9	15	2	26
		0.35	0.58	0.08	1.0