| 刘晓敏陈杰△.安氏I类错合拔牙与非拔牙矫治对口唇形态影响的研究[J].,2011,11(3):523-526 |
| 安氏I类错合拔牙与非拔牙矫治对口唇形态影响的研究 |
| Lip Position Changes in Angle Class I Malocclusion after OrthodonticTreatment, with and without Extractions |
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| DOI： |
| 中文关键词: Angle I类错合 口唇形态 头影测量 |
| 英文关键词: Angle Class I malocclusion lip position X-ray cephalometric |
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| 中文摘要: |
| 目的：研究安氏I类错合拔牙与非拔牙矫治对口唇形态的影响。方法：从直丝弓矫治的Angle I类错合患者治疗前后的X线
侧位片中随机选取拔除4个第一前磨牙患者15例(A组)，非拔牙矫治患者15例（B组），经X 线头影软组织测量分析比较矫治前
后拔牙组与非拔牙组口唇形态的变化，对所得数据进行统计学处理。结果：拔牙矫治后上下唇的突度有明显改善，平均减少1.42
和2.03 mm；上下唇的长度也平均增加0.51 和1.58 mm；非拔牙矫治患者治疗后鼻唇角、下唇突度、上下唇长度均有增加，但矫治
前后无统计学差异。结论：拔牙矫治有利于减小上下唇突度从而改善软组织侧貌。 |
| 英文摘要: |
| Objictive: To investigate the effect of Angle Class I malocclusion after orthodontic treatment, with and without extractions
on lip position changes. Methods: 30 patients with Angle Class I malocclusion were chosen. 15 patients were treated by 4 first-premolars
extraction (Group A) and 15 patients were treated without extraction (Group B). The soft tissue X-ray cephalometric of the
patients were measured before and after the treatment and compared statistically. Results: After the extraction treatment, the upper and
lower projecting lip reduced by 1.42 mm and 2.03, mmrespectively. The length of the upper and lower lips increased by 0.51mm and
1.58mm, respectively. For the group B, the nasolabial angle, the lower lip protrusion, the length of upper and lower lips had been increased,
though there had no statistical significance before and after treatment. Conclusions: After extraction treatment the upper and
lower projecting lips decreased．The patients with extractment treatment had the facial aesthelics. |
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