表 1. 牙轴近远中倾斜度测量的比较.
Tab 1 Comparison of mesiodistal tooth angulations
| 牙位 | 方法1(模型测量)(M±SD) | 方法2(全景片测量)(M±SD) | 方法3(CBCT测量 )(M±SD) | 方法1与方法2的差值 |
方法1与方法3的差值 |
||
| M±SD | P值 | M±SD | P值 | ||||
| U1 | 96.28±11.40 | 94.02±5.92 | 93.31±3.53 | −2.26±1.90 | 0.39 | −2.97±1.90 | 0.213 |
| U2 | 95.57±5.65 | 92.78±5.68 | 93.30±4.51 | −2.79±0.93 | 0.01 | −2.27±0.93 | 0.033 |
| U3 | 93.58±6.77 | 94.75±6.26 | 93.26±5.10 | 1.17±1.15 | 0.50 | −0.33±1.15 | 0.943 |
| U4 | 93.14±7.71 | 95.11±5.73 | 92.56±3.88 | 1.96±1.20 | 0.19 | −0.59±1.20 | 0.842 |
| U5 | 92.51±6.33 | 96.39±6.89 | 92.62±5.23 | 3.89±1.16 | 0.00* | 0.12±1.16 | 0.992 |
| U6 | 82.25±14.13 | 86.55±7.87 | 88.98±7.58 | 4.30±2.50 | 0.16 | 6.73±2.50 | 0.017 |
| L1 | 89.02±4.23 | 87.60±4.31 | 89.89±4.69 | −1.42±0.88 | 0.20 | 0.88±0.88 | 0.512 |
| L2 | 84.91±13.80 | 87.65±5.42 | 87.15±5.68 | 2.75±2.27 | 0.38 | 2.25±2.27 | 0.512 |
| L3 | 86.29±6.41 | 82.75±7.17 | 87.85±8.45 | −3.54±1.21 | 0.01 | 1.56±1.21 | 0.338 |
| L4 | 92.30±12.00 | 86.74±7.04 | 90.36±8.32 | −5.56±2.09 | 0.02 | −1.94±2.09 | 0.553 |
| L5 | 95.43±9.22 | 90.50±5.10 | 93.04±6.50 | −4.93±1.45 | 0.00* | −2.39±1.45 | 0.183 |
| L6 | 84.09±6.87 | 85.41±5.33 | 83.11±6.57 | 1.32±1.24 | 0.46 | −0.98±1.24 | 0.645 |
注:*P<0.004 17,差异有统计学意义。