A retrospective comparison of two protocols for correction of skeletal Class III malocclusion in prepubertal children: hybrid hyrax expander with mandibular miniplates and rapid maxillary expansion with face mask

Tarraf, Nour Eldin; Dalci, Oyku; Dalci, Kerem; Altug, Ayse Tuba; Darendeliler, M. Ali

doi:10.1186/s40510-022-00446-z

Progress in Orthodontics

Table 4 Treatment changes and comparisons within and between groups

From: A retrospective comparison of two protocols for correction of skeletal Class III malocclusion in prepubertal children: hybrid hyrax expander with mandibular miniplates and rapid maxillary expansion with face mask

	HH-MP (T2–T1)					RME–FM (T2–T1)					Difference between groups for T2–T1
	Mean	SD	%95 CI		p	Mean	SD	%95 CI		P	Mean Diff	SE	%95 CI		p
	Mean	SD	Lower	Upper	p	Mean	SD	Lower	Upper	P	Mean Diff	SE	Lower	Upper	p
SNA	4.26	2.15	3.19	5.33	< 0.001	1.14	0.93	0.68	1.61	< 0.001	− 3.11	0.55	− 4.25	− 1.97	< 0.001
SNB	− 0.96	1.23	− 1.57	− 0.35	0.004	− 0.89	1.21	− 1.49	− 0.29	0.006	0.07	0.41	− 0.76	0.89	0.87
ANB	5.25	2.03	4.24	6.26	< 0.001	2.04	1.07	1.51	2.58	< 0.001	− 3.21	0.54	− 4.32	− 2.09	< 0.001
Wits	6.03	3.13	4.48	7.59	< 0.001	2.94	1.75	2.07	3.81	< 0.001	− 3.09	0.84	− 4.81	− 1.38	< 0.001
A-TV	4.06	3.15	2.49	5.62	< 0.001	1.69	1.06	1.17	2.22	< 0.001	− 2.36	0.78	− 3.99	− 0.73	0.007
B-TV	− 1.43	2.56	− 2.71	− 0.16	0.03	− 0.92	1.86	− 1.84	0.01	0.052	0.52	0.75	− 1.00	2.03	0.494
PP-MP	1.40	2.78	− 0.03	2.83	0.055	1.52	2.74	0.16	2.88	0.031	0.12	0.93	− 1.78	2.02	0.897
SN-MP	0.48	1.87	− 0.45	1.41	0.292	1.13	1.90	0.18	2.07	0.022	0.65	0.63	− 0.62	1.92	0.307
AR-Go-Me	− 0.19	1.39	− 0.88	0.50	0.56	0.48	2.81	− 0.92	1.88	0.481	0.67	0.74	− 0.83	2.17	0.369
UOP-PP	− 0.12	3.03	− 1.63	1.39	0.866	− 1.44	3.01	− 2.94	0.05	0.057	− 1.32	1.01	− 3.37	0.72	0.198
LOP-MP	2.58	2.99	1.10	4.07	0.002	2.41	3.62	0.61	4.21	0.012	− 0.18	1.11	− 2.43	2.07	0.873
U1-PP	− 1.22	4.13	− 3.28	0.83	0.227	5.02	3.93	3.07	6.98	< 0.001	6.24	1.34	3.51	8.98	< 0.001
U6-PP	1.46	2.47	0.23	2.68	0.023	3.07	1.77	2.19	3.95	< 0.001	1.62	0.72	0.16	3.07	0.03
L1-MP	2.87	5.37	0.20	5.54	0.037	− 5.29	3.57	− 7.07	− 3.52	< 0.001	− 8.16	1.52	− 11.25	− 5.07	< 0.001
L6-MP	2.07	4.15	0.01	4.14	0.049	− 0.62	5.83	− 3.52	2.28	0.656	− 2.69	1.69	− 6.12	0.73	0.119
Overjet	4.12	1.48	3.38	4.86	< 0.001	5.19	1.86	4.27	6.12	< 0.001	1.07	0.56	− 0.07	2.21	0.064
Overbite	4.26	2.01	− 0.10	1.89	0.076	0.16	2.29	− 0.98	1.30	0.769	− 0.73	0.72	− 2.19	0.73	0.314

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