Table 2.

Comparisons of palatal alveolar bone between Ceph, U1CT, and U2CT.

Maxillary Teeth (n = 64)	Palatal Side
	Ceph	U1CT	U2CT	ANOVA p-Value	Differences
	(C)	(U1)	(U2)		C-U1	C-U2	U1-U2
1) Alveolar bone thickness
3 mm apical to CEJ	1.53 ± 0.44	1.12 ± 0.38	1.05 ± 0.32	<0.001	0.41 **	0.48 **	0.07
6 mm apical to CEJ	2.24 ± 0.41	1.71 ± 0.39	1.66 ± 0.30	<0.001	0.53 **	0.58 **	0.05
9 mm apical to CEJ	3.09 ± 0.42	2.55 ± 0.39	2.49 ± 0.37	<0.001	0.54 **	0.60 **	0.06
2) Alveolar bone height (CEJ to alveolar crest)	0.90 ± 0.18	1.05 ± 0.15	1.07 ± 0.12	<0.001	0.15 **	0.17 **	0.02
3) Cortical bone thickness
3 mm apical to CEJ	1.53 ± 0.44	1.12 ± 0.38	1.05 ± 0.32	<0.001	0.41 **	0.48 **	0.07
6 mm apical to CEJ	1.75 ± 0.46	1.30 ± 0.36	1.24 ± 0.33	<0.001	0.45 **	0.51 **	0.06
9 mm apical to CEJ	1.97 ± 0.44	1.49 ± 0.36	1.45 ± 0.34	<0.001	0.48 **	0.52 **	0.04
4) Cortical bone height	3.05 ± 0.22	2.91 ± 0.24	2.87 ± 0.21	<0.001	0.14 *	0.18 **	0.04
5) Cancellous bone thickness
3 mm apical to CEJ	-	-	-	N/A	-	-	-
6 mm apical to CEJ	0.49 ± 0.18	0.41 ± 0.21	0.42 ± 0.20	0.078	0.08	0.07	0.01
9 mm apical to CEJ	1.12 ± 0.15	1.06 ± 0.34	1.04 ± 0.37	0.387	0.06	0.08	0.02

Differences between groups were tested by ANOVA and Bonferroni test. * p < 0.01, ** p < 0.001.