Journal of Prevention and Treatment for Stomatological Diseases ›› 2019, Vol. 27 ›› Issue (3): 172-177.DOI: 10.12016/j.issn.2096-1456.2019.03.006

• Cinical Study • Previous Articles     Next Articles

CBCT study of three-dimensional morphological characteristics of upper airway in children and adolescents with skeletal class Ⅲ malocclusion

CHEN Qiaoyun,PENG Youjian()   

  1. Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan 430060, China
  • Received:2018-07-25 Revised:2019-01-10 Online:2019-03-20 Published:2019-03-20
  • Contact: Youjian PENG



  1. 武汉大学人民医院口腔科,湖北 武汉(430060)
  • 通讯作者: 彭友俭
  • 作者简介:陈巧云,医师,硕士,
  • 基金资助:


Objective To investigate the three-dimensional morphological characteristics of the upper airway in children and adolescents with skeletal class Ⅲ malformation and to explore the relationship between craniofacial structure and upper airway morphology.Methods Ninety cases of malocclusion aged 3-18 years were collected. In addition, 45 cases of type I and type Ⅲ were classified into three age groups with 15 cases in each group: 3-6 years old, 7-12 years old and 13-18 years old. CBCT was taken, and the scanning data of CBCT were reconstructed by the third-party software Invivo 5. The volume, minimum cross-sectional area, height and the ratio of sagittal diameter to transverse diameter at the minimum cross-sectional area of each segment of the upper airway were measured. The difference of the upper airway between skeletal class I and skeletal class Ⅲ in each age group was analyzed and compared by group t test.Results No significant differences in the upper airway indexes were noted between skeletal class I and skeletal class Ⅲ(P > 0.05) in the 3-6 years old group. In the 7-12 years old group, the total volume of skeletal class Ⅲ upper airway (16.25 ± 3.69 cm 3), nasopharyngeal segment (2.39 ± 0.90 cm 3), and palatopharyngeal segment (5.24 ± 1.14 cm 3) were reduced compared with the total volume of the skeletal class I upper airway (20.98 ± 6.25 cm 3) , nasopharyngeal segment (4.21 ± 1.09 cm 3), and palatopharyngeal segment (8.18 ± 2.02 cm 3), respectively, the differences were statistically significant (tVtotal=2.526, tVnose=4.999, tVpalate=4.908, P < 0.05). In the 13-18 years old group, only nasopharyngeal segment volume (3.83 ± 0.90 cm 3) was reduced in skeletal type I (4.69 ± 1.34 cm 3); the difference was statistically significant (t=2.053, P < 0.05).Conclusion Age is an important factor affecting the morphology and structure of upper airway in skeletal Ⅲ malocclusion.

Key words: Upper airway, Skeletal class Ⅲ occlusion;, Malocclusion, Cone beam computed tomography, Obstructive sleep apneahypopnea syndrome


目的 了解测量儿童及青少年骨性Ⅲ类错頜畸形患者上气道的三维形态结构特征,探讨颅颌面结构与上气道形态之间的关系。方法 收集3~18岁错頜畸形患者90例,Ⅰ类和Ⅲ类骨面型各45例,并各自分为3~6岁、7~12岁和13~18岁3个年龄组,每组15例。拍CBCT,并采用第三方软件Invivo5将CBCT扫描数据进行三维重建,测量上气道各分段的体积、最小截面积、高度、最小截面处矢状径与横径的比值,应用成组t检验分析比较各年龄组中骨性Ⅰ类与骨性Ⅲ类之间上气道的差异。结果 3~6岁年龄组:骨性Ⅲ类与骨性Ⅰ类相比,上气道各项指标差异均无统计学意义(P>0.05);7~12岁年龄组:骨性Ⅲ类上气道的总体容积(16.25 ± 3.69﹚cm 3、鼻咽段容积(2.39 ± 0.90)cm 3及腭咽段容积(5.24 ± 1.14)cm 3分别小于骨性Ⅰ类上气道总容积(20.98 ± 6.25)cm 3、鼻咽段容积(4.21 ± 1.09)cm 3及腭咽段容积(8.18 ± 2.02)cm 3,差异具有统计学意义(tV总=2.526,tV鼻=4.999,tV腭=4.908,P < 0.05);13~18岁年龄组:骨性Ⅲ类与骨性Ⅰ类相比,仅鼻咽段容积(3.83 ± 0.90)cm 3较骨性Ⅰ类(4.69 ± 1.34)cm 3小,差异具有统计学意义(t=2.053,P < 0.05)。结论 年龄是影响骨性Ⅲ类错頜上气道形态结构的一个重要因素。

关键词: 上气道, 骨性Ⅲ类;, 错頜畸形, 锥形束CT, 阻塞性睡眠呼吸暂停低通气综合征

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