West China Journal of Stomatology ›› 2018, Vol. 36 ›› Issue (6): 638-645.doi: 10.7518/hxkq.2018.06.011
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Yulan Wang,Tiejun Wang,Zhonghao Liu()
Received:
2018-04-05
Revised:
2018-06-12
Online:
2018-12-01
Published:
2018-12-12
Contact:
Zhonghao Liu
E-mail:dentlzh@163.com
CLC Number:
Yulan Wang,Tiejun Wang,Zhonghao Liu. Changes in root and alveolar bone before and after treatment by retracting the upper incisors[J]. West China Journal of Stomatology, 2018, 36(6): 638-645.
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Tab 1
Statistical description of root absorption and mea-surement before and after treatment for adduc-tion of upper incisors
测量项目 | T1 | T2 | ΔT(T1-T2) |
---|---|---|---|
U1-SN/° | 116.29±5.92 | 103.38±2.92 | 12.92±6.43 |
U1E-sag/mm | 53.66±3.08 | 48.13±2.40 | 5.54±2.21 |
U1E-ver/mm | 28.31±1.83 | 28.90±1.38 | -0.60±0.95 |
UA/mm | 2.49±0.75 | 2.28±0.75 | 0.21±1.03 |
UABL/mm | 0.88±0.28 | 1.08±0.35 | -0.20±0.22 |
UPBL/mm | 0.71±0.26 | 0.73±0.31 | -0.02±0.35 |
Root length/mm | 12.17±0.86 | 11.36±0.91 | 0.81±0.46 |
牙根吸收率/% | 6.80±3.60 |
Tab 3
Pearson correlation coefficient analysis
分析项目 | 统计量 | ΔTU1-SN | ΔTU1E-sag | ΔTU1E-ver | T2UA | ΔTUA |
---|---|---|---|---|---|---|
ΔTRoot length | r值 | 0.251 | 0.405* | 0.140 | -0.391* | 0.313 |
P值 | 0.134 | 0.013 | 0.416 | 0.017 | 0.060 | |
ΔTRoot absorption | r值 | 0.176 | 0.358* | 0.101 | -0.417* | 0.280 |
P值 | 0.298 | 0.030 | 0.559 | 0.010 | 0.093 | |
ΔTUABL | r值 | -0.354* | -0.103 | -0.282 | -0.129 | -0.161 |
P值 | 0.032 | 0.545 | 0.096 | 0.448 | 0.342 |
Tab 4
Comparison of cephalometric measurements be-fore and after treatment
测量项目 | 正常值 | 治疗前测量值 | 治疗后测量值 |
---|---|---|---|
SNA/° | 82.8±4.0 | 87.0 | 87.3 |
SNB/° | 80.1±3.9 | 81.0 | 80.2 |
ANB/° | 2.7±2.0 | 6.0 | 7.1 |
FH-NP/° | 85.4±3.7 | 82.1 | 83.0 |
NA-PA/° | 6.0±4.4 | 12.6 | 14.9 |
U1-NA/mm | 5.1±2.4 | 4.8 | -1.2 |
U1-NA/° | 22.8±5.7 | 22.1 | 8.0 |
L1-NB/mm | 6.7±2.1 | 6.0 | 6.7 |
L1-NB/° | 30.3±5.8 | 29.1 | 38.2 |
U1-L1/° | 125.4±7.9 | 123.9 | 127.4 |
U1-SN/° | 105.7±6.3 | 109.2 | 95.2 |
MP-SN/° | 32.5±5.2 | 33.1 | 34.1 |
MP-FH/° | 31.1±5.6 | 32.0 | 32.2 |
L1-MP/° | 92.6±7.0 | 96.5 | 104.0 |
Y轴/° | 66.3±7.1 | 66.4 | 67.1 |
Pg-NB/mm | 1.0±1.5 | 1.3 | 1.2 |
Tab 5
Statistical description of root absorption and mea-surement before and after treatment for adduc-tion of upper incisors in typical case
测量项目 | T1 | T2 | ΔT(T1-T2) |
---|---|---|---|
U1-SN/° | 109.2 | 95.2 | 14 |
U1E-sag/mm | 57.63 | 49.91 | 7.72 |
U1E-ver/mm | 28.65 | 29.89 | -1.24 |
UA/mm | 2.1 | 3.6 | -1.5 |
UABL/mm | 1.5 | 1.5 | 0 |
UPBL/mm | 1.2 | 0.3 | 0.9 |
Root length/mm | 23.7 | 22.8 | 0.9 |
牙根吸收率/% | 3.80 |
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