口腔医学研究 ›› 2018, Vol. 34 ›› Issue (4): 401-404.DOI: 10.13701/j.cnki.kqyxyj.2018.04.016

• 口腔颌面影像学研究 • 上一篇    下一篇

不同牙合期的高角型骨性Ⅲ类患者颏部形态的研究

葛晓磊, 刘晔, 刘春艳, 张伟灵, 刘洋, 张利, 马文盛*   

  1. 河北医科大学口腔医院正畸科 河北 石家庄 050011
  • 收稿日期:2018-01-05 出版日期:2018-04-28 发布日期:2018-04-25
  • 通讯作者: 马文盛,E-mail:wsma02@sina.com
  • 作者简介:葛晓磊(1990~ ),女,河北藁城人,硕士,医师,主要从事口腔正畸的临床治疗工作。
  • 基金资助:
    河北省临床医学优秀人才培养项目(编号:MXZB00014)

Chin Morphology in Skeletal Class Ⅲ Subjects with Hyperdivergent at Different Dentition Stages.

GE Xiao-lei, LIU Ye, LIU Chun-yan, ZHANG Wei-ling, LIU Yang, ZHANG Li, MA Wen-sheng*   

  1. Department of Orthodontics, Stomatology Hospital of Hebei Medical University, Shijiazhuang 050011, China.
  • Received:2018-01-05 Online:2018-04-28 Published:2018-04-25

摘要: 目的:通过采用头影测量的方法,分别比较不同牙合期的高角型骨性Ⅲ类患者与高角型骨性Ⅰ类患者的颏部形态,以研究高角型骨性Ⅲ类错牙合不同牙合期的颏部形态的具体特征及变化趋势。方法:选择120例高角患者,分为替牙期(7~10岁)、年轻恒牙期(11~14岁)、成熟恒牙期(18岁及以上),再分别分为Ⅰ类组与Ⅲ类组。拍摄X线头颅侧位片并进行头影测量,比较不同错牙合类型之间颏部形态的差异。结果:高角型骨性Ⅲ类错牙合患者替牙期出现颏部过度发育,年轻恒牙期时呈加重趋势且下切牙代偿,进入成熟恒牙期后有进一步加重的趋势。在整个恒牙期颏部都表现出颏角小、突度大、更平直的特点。结论:高角型骨性Ⅲ类错牙合患者的颏部有其独特的发育规律与形态特征。

关键词: 颏部, 骨性Ⅲ类错牙合, 高角生长型, 牙列分期, 发育

Abstract: Objective: To analyze specific features and development tendency of chin morphology in hyperdivergent skeletal class Ⅲ malocclusion. Methods: One hundred and twenty subjects of hyperdivergent were divided into mixed dentition group (7-10 years old), young permanent dentition group (11-14 years old), and mature permanent dentition group (18 years old and over). Then each group was divided into classⅠmalocclusion group and class Ⅲ malocclusion group. Cephalograms were analyzed for all subjects to study chin morphology. Results: Excessive development of chin appeared in mixed dentition. Then, in young permanent dentition, mental excessive development became more apparent, and lower incisors appeared compensative changes. All of these were further aggravated in mature permanent dentition. In permanent dentition, the chin of skeletal class Ⅲ subjects of hyperdivergent showed common characteristics such as small chin angle, large chin protrusion, and small chin curvature. Conclusion: Chin of skeletal class Ⅲ subjects of hyperdivergent has its unique development pattern and morphological characteristics.

Key words: Chin, Skeletal class Ⅲ, Hyperdivergent, Dentition stage, Development