Table 2. Mean (SD) thickness values by age group.

	Medial Thickness (mm)		Lateral Thickness (mm)
Age Group	Mean	SD	Mean	SD
20's	3.08	0.83	2.77	0.57
30's	3.28	0.88	3.05	0.70
40's	3.39	0.84	3.10	0.55
50's	3.54	0.71	3.32	0.65