Rapid maxillary expansion outcomes according to midpalatal suture maturation levels

Progress in Orthodontics

Table 2 Measurements with changes according to midpalatal suture maturation groups

Measurements	Time	Stage A (mean ± SD)	Stage B (mean ± SD)	Stage C (mean ± SD)	Stage D (mean ± SD)	Stage E (mean ± SD)	P
Interdental width	T0	1.98 ± 0.67	1.55 ± 0.33	2.27 ± 0.56	1.55 ± 0.82	2.11 ± 0.79	0.234
	T1	2.79 ± 0.38	2.49 ± 0.29	3.02 ± 0.72	2.43 ± 0.57	2.67 ± 0.92	0.411
	P	0.014	0.035	0.001	0.035	0.091
Nasal spine width	T0	4.77 ± 1.32	4.13 ± 1.35	4.54 ± 1.34	4.65 ± 1.84	4.25 ± 1.14	0.940
	T1	5.57 ± 1.12	5.14 ± 1.14	5.55 ± 1.47	5.67 ± 1.60	5.29 ± 0.98	0.963
	P	0.011	0.045	0.002	0.018	0.032
Nasal base width	T0	18.91 ± 3.02	17.95 ± 6.1	16.71 ± 1.9	19.12 ± 5	18.59 ± 4.57	0.774
	T1	20.33 ± 2.78	19.18 ± 5.84	19.2 ± 2.55	21.52 ± 6.03	19.63 ± 4.46	0.845
	P	0.006	0.030	0.012	0.008	0.044
Maxillary width	T0	60.19 ± 2.15	55.41 ± 3.40	57.65 ± 4.34	60.33 ± 2.84	58.05 ± 3.906	0.127
	T1	63.17 ± 3.05^a	57.7 ± 1.83^b	60.78 ± 3.11^ab	63.68 ± 1.41^a	60.35 ± 3.8^ab	0.012
	P	0.001	0.147	0.001	0.015	0.009
Palatal intermolar width	T0	31.16 ± 3.03	29.77 ± 2.20	30.07 ± 2.89	31.24 ± 1.72	30.03 ± 3.88	0.824
	T1	34.85 ± 3.84	33.34 ± 3.10	34.57 ± 4.33	35.9 ± 2.51	35.08 ± 4.18	0.862
	P	0.005	0.061	0.001	< 0.001	< 0.001
Buccal intermolar width	T0	49.75 ± 4.02	48.43 ± 1.97	48.66 ± 2.99	51.27 ± 2.30	48.51 ± 4.73	0.523
	T1	55.07 ± 3.67	51.96 ± 2.55	53.75 ± 4.11	55.29 ± 3.34	54.02 ± 4.37	0.631
	P	< 0.001	0.089	< 0.001	0.002	< 0.001

^{a, b}There is no difference in the measurements which were marked with the same letter
SD standard deviation