Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (8): 1209-1214.doi: 10.3969/j.issn.2095-4344.2017.08.011

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Characteristics of the upper airway growth in class III malocclusion patients

Qi Yi-zhe, Zhang Ya-qiu, Liu Ke, Li Yong-ming   

  1. Department of Orthodontics, School of Stomatology of the Fourth
    Military Medical University, Shaanxi Provincial Clinical Research Center for Oral Diseases, National Clinical Research Center for Oral Diseases, State Key Laboratory of Military Stomatology, Xi’an 710032, Shaanxi Province, China
  • Received:2017-01-21 Online:2017-03-18 Published:2017-04-14
  • Contact: Li Yong-ming, M.D., Professor, Chief physician, Department of Orthodontics, School of Stomatology of the Fourth Military Medical University, Shaanxi Provincial Clinical Research Center for Oral Diseases, National Clinical Research Center for Oral Diseases, State Key Laboratory of Military Stomatology, Xi’an 710032, Shaanxi Province, China
  • About author:Qi Yi-zhe, Studying for master’s degree, Physician, Department of Orthodontics, School of Stomatology of the Fourth Military Medical University, Shaanxi Provincial Clinical Research Center for Oral Diseases, National Clinical Research Center for Oral Diseases, State Key Laboratory of Military Stomatology, Xi’an 710032, Shaanxi Province, China
  • Supported by:

    the General Project of the National Natural Science Foundation of China, No. 31370943

Abstract:

BACKGROUND: Class II malocclusion has been found to be associated with the morphology of upper airway, but development of upper airway in patients with class III malocclusion, and its correlation with the craniofacial morphology have not yet been reported.
OBJECTIVE: To investigate the characteristics of the upper airway growth in patients with class III malocclusion according to quantitative cervical vertebral maturation (QCVM), thus providing references for the upper airway construction and studies on the craniofacial development.
METHODS: 368 patients with class III malocclusion aged 4-39 years old were enrolled and allocated to four groups according to QCVM (QCVM I, II, III and IV). The lateral cephalometric radiographs were measured, and then the sagittal depth of upper airway was analyzed.
RESULTS AND CONCLUSION: All measurements showed no significant differences in QCVM I. In QCVM II, III and IV, only the distance of epiglottic vallecula and posterior pharyngeal wall showed significant difference. The PNS-R, PNS-AD2, V-LPW of upper airway in male increased from QCVM I to QCVM III, and SPP-SPPW, U-MPW, TB-TPPW increased from QCVM II, and the increase of PNS-UPW made a significance from QCVM I to QCVM II. In female, the PNS-R, PNS-AD2 of upper airway increased from QCVM I to QCVM III, and SPP-SPPW, U-MPW, TB-TPPW, V-LPW increased from QCVM II, and the increase of PNS-UPW made a significant difference from QCVM I to QCVM II. While from QCVM III to QCVM IV, the changes made no significance. There was a correlation between the sagittal depth of upper airway and craniofacial structure. Different vertical facial types exposed influence on the sagittal depth of upper airway. To conclude, the upper airway is related to the craniofacial development in class III malocclusion patients, paving the way for the future study on the correlation between the upper airway and class III malocclusion.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Age Determination by Skeleton, X-ray Absorption Spectroscopy, Tissue Engineering

CLC Number: