Table 4. Relationship between changes in posterior border (Dp) contour types during mouth opening and temporomandibular joint (TMJ) movements (normal and abnormal) by pseudodynamic analysis.

	TMJ movement by pseudodynamic analysis
	Normal	Abnormal
Change in Dp contour types	1	6
From V or C to F	1	3
From V to F		(2)
From C to F	(1)	(1)
Between C and V		3
From C to V		(2)
From V to C		(1)
No change in Dp contour types	7	4
V	6	3
F	1
Folding		1
Total	8	10

C-type, concave; F-type, flat; V-type, convex