Comparison of Morphologic Parameters of Temporomandibular Joint for Asymptomatic Subjects Using the Two-Dimensional and Three-Dimensional Measuring Methods

Table 2

Mean and standard deviation of the morphologic parameters for the ten asymptomatic subjects on the left and right TMJs.

Morphologic parameters	Group A ()			Group B ()
	Left TMJ	Right TMJ	value	Left TMJ	Right TMJ	value
HCA (°)	11.91 ± 0.55	12.46 ± 0.74		12.57 ± 0.37	12.87 ± 0.31	NS
CCA (°)	12.48 ± 0.55	12.73 ± 0.51	NS	12.91 ± 0.63	12.95 ± 0.60	NS
SRA (°)	76.65 ± 3.28	76.70 ± 3.86	NS	80.11 ± 1.52	80.62 ± 1.30	NS
CCW (mm)	18.54 ± 2.56	17.88 ± 2.04	NS	18.69 ± 2.05	18.39 ± 2.28	NS
MJS (mm)	2.27 ± 0.28	2.32 ± 0.21	NS	2.84 ± 0.50	2.78 ± 0.46	NS
LJS (mm)	2.54 ± 0.24	2.59 ± 0.19	NS	3.09 ± 0.77	2.96 ± 0.47	NS
SJS (mm)	2.03 ± 0.14	2.07 ± 0.15	NS	2.26 ± 0.19	2.28 ± 0.18	NS
AJS (mm)	2.55 ± 0.56	2.39 ± 0.35	NS	2.64 ± 0.65	2.90 ± 0.48	NS
PJS (mm)	2.49 ± 0.44	2.57 ± 0.54	NS	2.55 ± 0.82	2.68 ± 0.61	NS

Note: NS: not significant (). Statistically significant difference between the left and right TMJs by paired samples t-test (). HCA: horizontal condylar angle; CCA: coronal condylar angle; SRA: sagittal ramus angle; CCW: coronal condylar width; MJS: medial joint space; LJS: lateral joint space; SJS: superior joint space; AJS: anterior joint space; PJS: posterior joint space.