Three-dimensional analysis of the relationship between mandibular retromolar space and positional traits of third molars in non-hyperdivergent adults

Table 4 Comparison of data between groups in different levels

RS of Level 1–5 (mm)	Group^a of different references			Group^b of different sides
	WP groups	OP groups	WP VS OP	Right (R)	Left (L)	R VS L
	Mean ± SD (mm)	Mean ± SD (mm)	P	Mean ± SD (mm)	Mean ± SD (mm)	P
L1	11.10 ± 2.30	11.49 ± 2.06	0.045	11.21 ± 2.11	11.39 ± 2.26	0.269
L2	10.62 ± 1.81	11.17 ± 1.57	0.001	10.92 ± 1.72	10.87 ± 1.72	0.704
L3	7.84 ± 1.87	7.02 ± 1.83	0.000	7.57 ± 1.86	7.24 ± 1.85	0.058
L4	6.48 ± 1.84	5.43 ± 1.69	0.000	6.03 ± 1.88	5.82 ± 1.70	0.075
L5	4.39 ± 1.95	3.81 ± 1.54	0.001	4.14 ± 1.63	3.98 ± 1.85	0.142
A angle	48.83 ± 32.57	41.85 ± 31.07	0.113	45.51 ± 32.35	43.17 ± 31.45	0.231
B angle	19.06 ± 15.07	16.63 ± 11.75	0.069	17.20 ± 14.47	18.50 ± 12.57	0.075

^aTwo-samples independent t-test and test for normality was significant (P < 0.05), ^bA paired t-test and test for normality was significant (P < 0.05)
The significance level P < 0.05 was labeled bold

ISSN: 1472-6831