Table 4.
Angular Measurements (deg) | Group 1 (n = 25) Extraction Group |
Group 2 (n = 25) Non-Extraction Group |
P-value (Inter-Group) [Group 1 vs Group 2] |
||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pre-treatment | Post-treatment | % Change | P-value [Pre- vs Post] | Pre-treatment | Post-treatment | % Change | P-value [Pre-vs Post] | Pre-treatment | Post-treatment | % Change | |
SNA | 82.8 ± 2.9 | 82.8 ± 3.1 | 1.5 | 0.805 (NS) | 82.5 ± 1.7 | 81.9 ± 1.3 | 1.4 | 0.040 (S) | 0.600(NS) | 0.237(NS) | 0.592(NS) |
SNB | 80.6 ± 2.9 | 80.3 ± 2.8 | 1.0 | 0.164 (NS) | 80.1 ± 1.6 | 79.7 ± 1.3 | 1.7 | 0.170 (NS) | 0.402(NS) | 0.342(NS) | 0.210(NS) |
ANB | 2.6 ± 1.0 | 2.5 ± 0.7 | 3.8 | 0.714 (NS) | 2.4 ± 0.6 | 2.3 ± 0.6 | 4.2 | 0.574 (NS) | 0.418(NS) | 0.275(NS) | 0.146(NS) |
UI x LI | 106.7 ± 4.5 | 132.2 ± 3.5 | 24.1 | 0.001 (S) | 117.0 ± 3.2 | 130.3 ± 2.2 | 13.1 | 0.001 (S) | 0.001(S) | 0.848(NS) | 0.001(S) |
UI x NA | 33.1 ± 4.0 | 23.2 ± 2.1 | 28.6 | 0.001 (S) | 27.7 ± 1.4 | 23.1 ± 1.0 | 16.5 | 0.001 (S) | 0.001(S) | 0.739(NS) | 0.001(S) |
LI x NB | 32.8 ± 2.8 | 24.8 ± 1.5 | 24.1 | 0.001 (S) | 27.8 ± 1.8 | 25.8 ± 0.5 | 11.3 | 0.001 (S) | 0.001(S) | 0.999(NS) | 0.001(S) |
IMPA | 105.4 ± 2.3 | 94.6 ± 2.4 | 10.3 | 0.001 (S) | 103.2 ± 1.9 | 95.9 ± 1.4 | 9.9 | 0.001 (S) | 0.001(S) | 0.006(S) | 0.501(NS) |
FMA | 25.7 ± 2.5 | 27.6 ± 3.8 | 10.7 | 0.001 (S) | 26.6 ± 1.7 | 28.2 ± 1.7 | 6.1 | 0.001 (S) | 0.154(NS) | 0.532(NS) | 0.163(NS) |
Saddle | 126.3 ± 4.4 | 126.4 ± 4.6 | 0.5 | 0.574 (NS) | 125.4 ± 5.2 | 125.8 ± 4.8 | 0.8 | 0.031 (S) | 0.505(NS) | 0.673(NS) | 0.175(NS) |
Articulare | 141.5 ± 5.9 | 142.9 ± 5.4 | 1.4 | 0.003 (S) | 142.8 ± 5.8 | 143.6 ± 5.6 | 0.8 | 0.001 (S) | 0.429(NS) | 0.647(NS) | 0.324(NS) |
Gonial | 125.0 ± 4.4 | 126.7 ± 4.1 | 2.1 | 0.010 (S) | 128.9 ± 3.7 | 129.6 ± 3.7 | 0.9 | 0.003 (S) | 0.001(S) | 0.011(S) | 0.211(NS) |
Total | 392.8 ± 7.1 | 395.4 ± 7.1 | 0.9 | 0.003 (S) | 397.1 ± 5.4 | 399.0 ± 4.8 | 0.5 | 0.001 (S) | 0.020(S) | 0.041(S) | 0.118(NS) |
Hyoid | 14.2 ± 5.4 | 15.5 ± 4.4 | 27.7 | 0.035 (S) | 17.7 ± 4.6 | 18.6 ± 3.6 | 14.1 | 0.090 (NS) | 0.016(S) | 0.010(S) | 0.179(NS) |
Values are Mean ± Standard Deviation. P-values by paired t-test after confirming the underlying normality assumption of difference in each measurement. P-value<0.05 is statistically significant. S, statistically Significant; NS, statistically Non-Significant.