Application of 3D Computed Tomography Reconstruction Images to Assess the Thickness and Dimensions of the Posterior Palatal Seal Area

Table 1

Mean thickness value (±SD) of posterior palatal mucosa (mm).

	R7	R6	R5	R4	R3	R2	R1	O	L1	L2	L3	L4	L5	L6	L7
A6			3.71 (0.80)	4.76 (0.78)	4.40 (1.22)	2.89 (1.07)	1.87 (0.79)	1.71 (0.59)	2.09 (0.79)	3.16 (1.01)	4.19 (1.23)	4.49 (0.64)	3.66 (0.88)
A5			3.90 (0.99)	5.01 (0.93)	4.54 (1.14)	3.12 (0.88)	2.05 (0.83)	1.75 (0.67)	2.35 (0.82)	3.33 (1.06)	4.37 (1.26)	4.88 (0.60)	3.82 (1.03)
A4		3.00 (1.04)	3.97 (1.22)	5.31 (1.02)	4.58 (0.98)	3.35 (0.93)	2.27 (0.91)	1.91 (0.73)	2.52 (0.99)	3.55 (1.19)	4.68 (1.29)	5.37 (0.76)	3.98 (1.08)	2.56 (1.02)
A3		2.85 (1.40)	4.23 (1.37)	5.55 (1.01)	4.89 (1.03)	3.77 (0.99)	2.60 (1.14)	2.10 (0.89)	2.80 (1.09)	4.01 (1.06)	5.10 (0.98)	5.54 (0.76)	4.06 (1.28)	2.42 (1.06)
A2	3.47 (1.56)	2.95 (1.38)	4.42 (1.40)	5.81 (0.86)	5.20 (1.04)	4.42 (1.10)	3.11 (1.17)	2.51 (0.95)	3.34 (1.12)	4.50 (1.08)	5.41 (1.06)	5.64 (0.68)	4.18 (1.37)	2.82 (1.18)	3.07 (1.20)
A1	3.52 (1.54)	3.31 (1.38)	4.51 (1.10)	6.25 (0.97)	5.88 (1.15)	5.26 (1.29)	3.91 (1.32)	3.36 (1.16)	4.19 (1.30)	5.47 (1.29)	5.92 (1.16)	5.85 (0.81)	4.60 (1.40)	3.37 (1.17)	3.48 (1.18)
HN	3.78 (1.45)	3.71 (1.26)	4.96 (1.20)	6.30 (1.20)	6.59 (1.34)	5.87 (1.63)	4.89 (1.62)	4.32 (1.53)	5.07 (1.68)	6.15 (1.56)	6.50 (1.14)	5.91 (1.37)	4.84 (1.38)	3.96 (1.09)	3.76 (1.35)

HN, hamular notch line; O, mid-palatal line; A1, 2 mm anterior to HN; A2, 4 mm anterior to HN; A3, 6 mm anterior to HN; A4, 8 mm anterior to HN; A5, 10 mm anterior to HN; A6, 12 mm anterior to HN; R1, 3 mm right to midline; R2, 6 mm right to midline; R3, 9 mm right to midline; R4, 12 mm right to midline; R5, 15 mm right to midline; R6, 18 mm right to midline; R7, 21 mm right to midline; L1, 3 mm left to midline; L2, 6 mm left to midline; L3, 9 mm left to midline; L4, 12 mm left to midline; L5, 15 mm left to midline; L6, 18 mm left to midline; L7, 21 mm left to midline.