Dental Arch Dimensions in Saudi Adults

Table 2

Upper and lower molar measurements including independent sample t-tests comparing males to females.

Abbreviation	Gender	n	Mean	Standard error of mean	Standard deviation	Minimum	Maximum	Significance (2-tailed)	Significance	Mean difference	Standard error difference	95% confidence interval of the difference
												Lower	Upper
Upper molars
U7CC	M	73	50.69	0.31	2.66	45.81	57.80	0.000		1.70	0.42	0.88	2.53
	F	96	48.98	0.28	2.70	44.49	54.71
U7ML	M	73	44.33	0.71	6.09	5.59	53.17	0.230	NS	1.00	0.83	−0.64	2.64
	F	96	43.33	0.48	4.72	4.87	49.44
U7MG	M	73	39.98	0.48	4.07	20.93	50.92	0.026		1.25	0.56	0.15	2.35
	F	96	38.73	0.32	3.16	30.76	47.38
U7DL	M	73	46.77	0.41	3.52	40.49	58.30	0.001		1.65	0.50	0.66	2.64
	F	96	45.12	0.30	2.98	40.46	52.25
U7DC	M	73	51.23	0.43	3.69	45.50	64.89	0.000		1.86	0.51	0.85	2.86
	F	96	49.38	0.30	2.93	45.05	56.57
U7DB	M	73	57.98	0.32	2.75	53.12	64.31	0.001		1.77	0.51	0.76	2.78
	F	96	56.22	0.37	3.65	51.07	72.79
U7CB	M	73	57.43	0.33	2.84	52.43	64.54	0.000		2.14	0.46	1.24	3.04
	F	96	55.29	0.31	3.01	50.26	62.33
U7MB	M	73	56.68	0.33	2.80	51.57	63.35	0.000		1.63	0.45	0.74	2.52
	F	96	55.05	0.30	2.98	49.46	61.95
U7MC	M	73	49.16	0.44	3.75	43.97	58.63	0.000		2.69	0.53	1.63	3.74
	F	96	46.47	0.32	3.18	38.26	58.10
U6CC	F	73	45.38	0.34	2.90	39.96	52.32	0.000		1.97	0.49	1.00	2.93
	M	96	43.42	0.34	3.32	38.25	53.58
U6ML	M	73	39.49	0.34	2.87	33.65	46.72	0.000		1.91	0.51	0.90	2.92
	F	96	37.58	0.36	3.57	27.81	47.94
U6MG	M	73	33.80	0.33	2.83	23.12	40.58	0.000		1.66	0.46	0.76	2.57
	F	96	32.14	0.31	3.05	27.54	40.58
U6DL	M	73	41.70	0.35	2.95	36.41	49.31	0.001		1.73	0.49	0.76	2.71
	F	96	39.97	0.34	3.35	32.26	53.72
U6DB	M	73	53.25	0.33	2.80	48.97	61.95	0.000		2.02	0.48	1.07	2.97
	F	96	51.23	0.34	3.30	41.35	58.26
U6CB	M	73	52.10	0.31	2.61	45.87	59.11	0.000		2.02	0.44	1.14	2.89
	F	96	50.09	0.31	3.03	42.51	56.82
U6MB	M	73	51.03	0.36	3.08	36.44	56.78	0.000		1.83	0.48	0.88	2.77
	F	96	49.21	0.31	3.06	44.25	56.51
U6MC	M	73	43.21	0.32	2.75	37.66	49.38	0.000		1.75	0.43	0.90	2.60
	F	96	41.45	0.29	2.79	35.96	47.88
Lower molars
U6MC	M	73	43.21	0.32	2.75	37.66	49.38	0.000		1.75	0.43	0.90	2.60
	F	96	41.45	0.29	2.79	35.96	47.88
L7CC	M	73	46.82	0.35	2.97	40.78	55.16	0.000		2.19	0.44	1.32	3.06
	F	96	44.63	0.28	2.72	39.90	51.71
L7DL	M	73	43.18	0.37	3.13	36.28	49.91	0.000		2.68	0.43	1.83	3.52
	F	96	40.51	0.25	2.44	35.64	45.60
L7DG	M	73	40.24	0.31	2.63	33.31	45.58	0.000		2.34	0.39	1.57	3.11
	F	96	37.90	0.25	2.41	32.95	43.49
L7ML	M	73	39.87	0.32	2.77	34.60	44.37	0.000		1.84	0.40	1.04	2.63
	F	96	38.04	0.25	2.45	33.00	42.89
L7MC	M	73	44.25	0.32	2.73	39.50	49.42	0.000		2.19	0.42	1.37	3.02
	F	96	42.06	0.27	2.64	37.93	48.76
L7CB	M	73	50.60	0.42	3.56	34.14	56.56	0.000		2.44	0.55	1.35	3.52
	F	96	48.17	0.36	3.51	39.37	56.24
L7DB	M	73	53.32	0.45	3.83	36.10	60.00	0.000		2.73	0.58	1.58	3.87
	F	96	50.59	0.38	3.68	40.55	58.40
L7DC	M	73	49.66	0.39	3.29	42.53	57.21	0.000		2.89	0.49	1.92	3.86
	F	96	46.77	0.31	3.05	40.49	53.48
L6CC	M	73	41.54	0.42	3.61	35.80	53.53	0.000		2.03	0.57	0.91	3.14
	F	96	39.51	0.37	3.67	34.75	53.83
L6ML	M	73	34.72	0.42	3.55	29.52	45.74	0.000		2.13	0.50	1.14	3.12
	F	96	32.59	0.30	2.95	28.03	44.83
L6MG	M	73	32.21	0.32	2.77	27.60	37.79	0.000		2.21	0.43	1.36	3.05
	F	96	30.00	0.28	2.75	25.52	37.62
L6MC	M	73	38.28	0.33	2.82	32.98	43.51	0.025		1.07	0.47	0.14	2.00
	F	96	37.21	0.33	3.19	31.49	46.71
L6MB	M	73	44.81	0.39	3.32	30.14	50.37	0.019		1.15	0.48	0.19	2.10
	F	96	43.67	0.30	2.97	38.57	49.81
L6CB	M	73	46.94	0.29	2.46	42.40	52.24	0.000		1.75	0.47	0.81	2.69
	F	96	45.53	0.38	3.69	33.21	51.72
L6DB	M	73	47.88	0.46	3.92	33.84	54.07	0.000		2.34	0.59	1.18	3.51
	F	96	34.44	0.31	3.09	28.62	46.46

NS: not significant; , , and .