Stomatology ›› 2023, Vol. 43 ›› Issue (8): 697-701.doi: 10.13591/j.cnki.kqyx.2023.08.005
• Clinical Research • Previous Articles Next Articles
HUANG Hong1,2,3,LI Yuan2,3,4,JING Qiuping1,2,3,SHI Yijin1,2,3,YANG Shengjun1,2,3,WANG Dongmiao1,2,3()
Revised:
2023-05-16
Online:
2023-08-28
Published:
2023-08-23
CLC Number:
HUANG Hong, LI Yuan, JING Qiuping, SHI Yijin, YANG Shengjun, WANG Dongmiao. Factors affecting the eruption status of mandibular third molars in adolescent orthodontic patients[J]. Stomatology, 2023, 43(8): 697-701.
Tab.1
Definition of linear and angular measurements on cephalometric radiograph"
测量指标 | 定义 |
---|---|
7D-ABR/mm | 下颌第二磨牙冠远中冠接触点沿??平面到下颌升支前缘相交的距离 |
8-OP/mm | 第三磨牙冠的最高点到??平面的距离 |
7-8axis/(°) | 第二磨牙和第三磨牙长轴之间的角度 |
8axis-MP/(°) | 第三磨牙的长轴与下颌平面之间的角度 |
RP-MP/(°) | 下颌支平面和下颌平面之间的角度 |
8axis-SN/(°) | 第三磨牙的长轴与前颅底平面之间的角度 |
8axis-FH/(°) | 第三磨牙的长轴与眶耳平面之间的夹角 |
MP-SN/(°) | 下颌平面和眶耳平面之间的角度 |
MP-FH/(°) | 下颌平面和眶耳平面之间的夹角 |
Tab.2
Relationship between clinical/radiographic parameters and eruption status of mandibular third molar"
相关因素 | 下颌第三磨牙状态 | P | ||||
---|---|---|---|---|---|---|
萌出 | 未萌出 | |||||
性别a | ||||||
女 | 206(69.1%) | 66(55%) | ||||
男 | 92(30.9%) | 54(45%) | 0.01* | |||
减数拔牙a | ||||||
否 | 153(51.3%) | 83(69.2%) | ||||
是 | 145(48.7%) | 37(30.8%) | <0.01* | |||
下颌第三磨牙发育程度a | ||||||
仅牙冠形成 | 139(46.6%) | 83(69.2%) | ||||
牙根形成 | 159(53.4%) | 37(30.8%) | <0.01* | |||
安氏分类a | ||||||
Ⅰ类 | 116(38.9%) | 34(28.3%) | ||||
Ⅱ类 | 70(23.5%) | 54(45%) | ||||
Ⅲ类 | 112(37.6%) | 32(26.7%) | <0.01* | |||
7D-ABRb/mm | 0.84±1.49 | 1.13±1.83 | 0.12 | |||
8-OPb/mm | -0.57±1.06 | -1.77±1.36 | <0.01* | |||
8axis-SNb/(°) | 35.80±11.95 | 25.97±12.49 | <0.01* | |||
7-8axisb/(°) | 26.15±9.68 | 35.20±11.77 | <0.01* | |||
下颌平面角b/(°) | 37.81±6.03 | 36.72±6.06 | 0.09 | |||
下颌角b/(°) | 124.39±9.99 | 123.52±12.19 | 0.45 |
Tab.3
Multivariate Logistic regression analyses ofclinical/radiographic parameters as risk factors for mandibular third molar eruption status"
相关因素 | 下颌第三磨牙状态 | P | 95%CI | |
---|---|---|---|---|
萌出 | 未萌出 | |||
性别 | ||||
女 | 206(69.1%) | 66(55%) | ||
男 | 92(30.9%) | 54(45%) | 0.93 | (0.54,1.95) |
减数拔牙 | ||||
否 | 153(51.3%) | 83(69.2%) | ||
是 | 145(48.7%) | 37(30.8%) | 0.02* | (0.26,0.87) |
下颌第三磨牙发育程度 | ||||
仅牙冠形成 | 139(46.6%) | 83(69.2%) | ||
牙根形成 | 159(53.4%) | 37(30.8%) | 0.01* | (0.22,0.78) |
安氏分类 | ||||
Ⅰ类 | 116(38.9%) | 34(28.3%) | ||
Ⅱ类 | 70(23.5%) | 54(45%) | 0.02* | (1.11,4.58) |
Ⅲ类 | 112(37.6%) | 32(26.7%) | 0.89 | (0.51,2.17) |
7D-ABR/mm | 0.84±1.49 | 1.13±1.83 | 0.61 | (0.97,1.26) |
8-OP/mm | -0.57±1.06 | -1.77±1.36 | <0.01* | (0.29,0.51) |
8axis-SN/(°) | 35.80±11.95 | 25.97±12.49 | <0.01* | (0.89,0.97) |
7-8axis/(°) | 26.15±9.68 | 35.20±11.77 | 0.02* | (1.01,1.10) |
下颌平面角/(°) | 37.81±6.03 | 36.72±6.06 | 0.39 | (0.92,1.03) |
下颌角/(°) | 124.39±9.99 | 123.52±12.19 | 0.29 | (0.95,1.01) |
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