表 1.
The linear variables pre- and post-treatment in 2 groups (mm)
两组矫治前后齿槽裂隙线性变量（mm）
| 组别
Group |
例数
n |
TT’ | QQ’ | PP’ | ||||||||
| 矫治前
Before treatment |
矫治后
After treatment |
统计值
Statistic |
矫治前
Before treatment |
矫治后
After treatment |
统计值
Statistic |
矫治前
Before treatment |
矫治后
After treatment |
统计值
Statistic |
||||
| 试验组
Test group |
17 | 31.45±2.06 | 30.44±1.47 |
t=0.792
P=0.524 |
26.34±1.68 | 25.05±1.98 |
t=1.978
P=0.053 |
10.86±2.37 | 3.04±1.68 |
t=14.620
P= 0.000 |
||
| 对照组
Control group |
22 | 32.76±2.71 | 31.97±2.02 |
t=0.524
P=0.783 |
27.86±2.03 | 27.63±1.84 |
t=0.048
P=0.874 |
11.23±2.94 | 4.15±1.92 |
t=15.740
P= 0.000 |
||
| 组别
Group |
例数
n |
PP’-x | PP’-y | PP’-z | ||||||||
| 矫治前
Before treatment |
矫治后
After treatment |
统计值
Statistic |
矫治前
Before treatment |
矫治后
After treatment |
统计值
Statistic |
矫治前
Before treatment |
矫治后
After treatment |
统计值
Statistic |
||||
| 试验组
Test group |
17 | 9.03±2.92 | 3.09±1.50 |
t=8.910
P=0.000 |
5.08±1.34 | 1.25±1.06 |
t=9.850
P=0.000 |
2.08±1.33 | 1.14±0.73 |
t=1.070
P=0.305 |
||
| 对照组
Control group |
22 | 10.56±3.18 | 3.98±1.96 |
t=11.520
P= 0.000 |
6.54±2.57 | 2.03±1.73 |
t=15.680
P= 0.000 |
3.05±1.92 | 2.65±1.80 |
t=0.724
P=0.527 |
||