Comprehensive three-dimensional positional and morphological assessment of the temporomandibular joint in skeletal Class II patients with mandibular retrognathism in different vertical skeletal patterns

Al-hadad, Saba Ahmed; ALyafrusee, Enas Senan; Abdulqader, Abbas Ahmed; Al-gumaei, Waseem Saleh; AL-Mohana, Rana A. A. M.; Ren, Liling

doi:10.1186/s12903-022-02174-6

Table 4 Descriptive statistics and significant P-values of ANOVA and Tukey post hoc tests for the measurements of the temporomandibular joint in the control group and skeletal Cl II with mandibular retrognathism in different vertical skeletal patterns

From: Comprehensive three-dimensional positional and morphological assessment of the temporomandibular joint in skeletal Class II patients with mandibular retrognathism in different vertical skeletal patterns

Variable	Control group		Hypodivergent group		Normodivergent group		Hyperdivergent group		ANOVA	Multiple Comparison Tukey's HSD test (P Value)
	Control group		Hypodivergent group		Normodivergent group		Hyperdivergent group		ANOVA	Comparison of all groups to control group			Comparison class II among different skeletal pattern
	M	SD	M	SD	M	SD	M	SD	P-Value	Control/Hypo-	Control/Normo-	Control/Hyper-	Hypo-/Normo-	Normo-/Hyper-	Hypo-/Hyper-
Mandibular fossa measurement
MFH (mm)	9.24	1.15	9.01	1.02	9.38	0.97	9.69	1.08	0.238	NS	NS	NS	NS	NS	NS
MFW (mm)	16.67	1.41	16.41	1.04	16.53	0.95	16.57	2.50	0.966	NS	NS	NS	NS	NS	NS
IFD (mm)	102.88	5.71	103.63	4.24	103.26	4.62	103.10	2.98	0.960	NS	NS	NS	NS	NS	NS
AEH (mm)	8.04	1.42	8.47	1.15	8.10	1.43	8.14	1.37	0.746	NS	NS	NS	NS	NS	NS
MFMLP (mm)	51.45	2.89	51.92	2.34	51.62	2.31	51.80	1.33	0.922	NS	NS	NS	NS	NS	NS
MF-VP (mm)	1.90	0.87	2.61	0.73	1.89	0.87	1.19	0.58	0.000***	0.026	NS	0.024	0.023	0.026	0.000
MF-APP (mm)	9.48	1.93	11.13	2.21	9.56	1.86	7.84	1.45	0.000***	0.035	NS	0.036	0.049	0.025	0.000
MF-MLI (°)	1.12	0.70	0.85	0.74	1.06	0.47	1.40	0.78	0.080	NS	NS	NS	NS	NS	NS
MF-VI (°)	0.40	0.28	0.42	0.34	0.43	0.26	0.58	0.41	0.303	NS	NS	NS	NS	NS	NS
MF-API (°)	88.63	0.85	88.93	0.71	88.77	0.46	88.25	1.17	0.145	NS	NS	NS	NS	NS	NS
Mandibular condyle measurement
MCI (°)	9.96	3.92	8.58	4.31	10.82	4.20	14.00	6.26	0.005**	NS	NS	0.043	NS	NS	0.003
VCI (°)	64.20	7.22	55.69	4.40	67.09	5.12	71.85	8.90	0.000***	0.001	NS	0.003	0.000	NS	0.000
APCI (°)	73.66	5.62	74.75	4.75	72.75	5.99	68.60	6.81	0.008**	NS	NS	0.038	NS	NS	0.007
VCP (mm)	2.83	1.51	3.53	1.12	2.13	1.52	1.33	0.72	0.000***	NS	NS	0.002	0.004	NS	0.000
APCP (mm)	7.41	2.56	8.35	2.76	6.89	1.98	4.85	1.99	0.000***	NS	NS	0.005	NS	0.038	0.000
MLCP (mm)	51.34	2.66	51.74	2.44	51.14	2.01	51.14	1.88	0.820	NS	NS	NS	NS	NS	NS
APCJP (%)	− 2.45	17.37	4.78	15.00	3.56	12.12	14.27	13.44	0.005**	NS	NS	0.003	NS	0.007	0.037
CL (mm)	17.89	1.61	19.36	1.68	18.48	1.45	16.25	1.92	0.000***	0.028	NS	0.025	NS	0.001	0.000
CW (mm)	7.28	0.78	8.03	0.83	7.63	1.06	6.52	0.80	0.000***	0.041	NS	0.035	NS	0.001	0.000
CH (mm)	4.63	1.19	4.76	0.82	5.32	1.08	6.62	0.85	0.000***	NS	NS	0.000	NS	0.007	0.000
TMJ space
AJS (mm)	2.63	0.53	2.34	0.51	2.39	0.61	1.92	0.37	0.000***	NS	NS	0.000	NS	0.023	NS
SJS (mm)	3.47	0.57	3.45	0.73	3.36	0.73	2.45	0.47	0.000***	NS	NS	0.000	NS	0.000	0.000
PJS (mm)	2.56	0.76	2.55	0.43	2.56	0.58	2.57	0.46	1.000	NS	NS	NS	NS	NS	NS
MJS (mm)	2.84	0.54	2.82	0.58	2.71	0.58	2.20	0.49	0.001**	NS	NS	0.003	NS	0.022	0.004
VTJS (mm3)	282.41	32.47	277.53	29.91	287.85	41.39	316.17	45.79	0.008**	NS	NS	0.030	NS	NS	0.009

M, mean value; SD, standard deviation; ANOVA, Analysis of Variance; NS, Not significant; Hypo-, Hypodivergent; Normo-, Normodivergent; Hyper-, Hyperdivergent
*P < 0.05; **P < 0.01; ***P < 0.001

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ISSN: 1472-6831

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