中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (36): 5781-5786.doi: 10.3969/j.issn.2095-4344.2017.36.008

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

锥形束CT评价上颌快速扩弓后鼻上颌复合体及上气道的三维形态改变

罗春花1,郑之峻2,徐卫华1,王青云2   

  1. 1贵州医科大学口腔医学院,贵州省贵阳市  550003;2贵阳市口腔医院正畸科,贵州省贵阳市  550003
  • 收稿日期:2017-07-12 出版日期:2017-12-28 发布日期:2018-01-04
  • 通讯作者: 郑之峻,主任医师,教授,贵州省贵阳市口腔医院正畸科,贵州省贵阳市 550003
  • 作者简介:罗春花,女,1991年生,贵州省开阳县人,汉族,贵州医科大学在读硕士,主要从事口腔正畸学研究。

Three-dimensional reconstruction of the nasomaxillary complex and upper airway following rapid maxillary expansion by cone-beam CT

Luo Chun-hua1, Zheng Zhi-jun2, Xu Wei-hua1, Wang Qing-yun2   

  1. 1School of Stomatology, Guizhou Medical University, Guiyang 550003, Guizhou Province, China; 2Department of Orthodontics, Guiyang Hospital of Stomatology, Guiyang 550003, Guizhou Province, China
  • Received:2017-07-12 Online:2017-12-28 Published:2018-01-04
  • Contact: Zheng Zhi-jun, Chief physician, Professor, Department of Orthodontics, Guiyang Hospital of Stomatology, Guiyang 550003, Guizhou Province, China
  • About author:Luo Chun-hua, Studying for master’s degree, School of Stomatology, Guizhou Medical University, Guiyang 550003, Guizhou Province, China

摘要:

文章快速阅读:


文题释义:
上颌快速扩弓:临床矫治上颌横向发育不足的常用方法。其原理是在短期内对上颌骨施加较大的矫形力,即在牙周支持组织来不及发生改建时,这种应力在腭中缝迅速堆积,导致骨缝处的纤维连接被拉开甚至部分断裂,骨缝扩开,从而使上颌宽度得到扩展。
鼻上颌复合体:是由上颌骨、颧骨、鼻骨、鼻甲组骨、上牙列及部分颅骨组成的骨性结合体,各个骨块间以骨缝连接,存在上颌窦、鼻腔、筛窦等空腔结构。
摘要
背景
:以往常利用二维平片、石膏模型等方法测量上颌快速扩弓矫治后颌骨及气道的变化,但存在失真、片面、重叠等缺陷,锥体束CT的出现实现了颌骨及气道的三维重建及测量并有效避免了以上问题。
目的:利用锥体束CT和Dolphin软件观察生长发育期上颌宽度不足患者经上颌快速扩弓治疗后鼻上颌骨复合体及上气道形态的改变。
方法:选择上颌宽度发育不足生长发育期错畸形患者30例,采用上颌快速扩弓治疗,所有患者矫治前后均拍摄锥体束CT,用Dolphin软件进行图像处理、三维重建、定点及测量分析,评价矫治前后患者鼻牙颌及上气道形态的变化。
结果与结论:①治疗后鼻腔宽度增加(2.13±1.80) mm,上颌骨宽度增加(4.12±2.15) mm,矫治前后差异有显著性意义(P < 0.05);②治疗后硬腭平面气道冠状径增加(3.30±2.56) mm,面积增加(75.37±53.92) mm,矫治前后差异有显著性意义(P < 0.05),而矢状径无明显变化;③治疗后鼻咽部气道表面积增加(33.57±57.10) mm2,体积增加(1 009.59±1 350.91) mm3,矫治前后差异具有显著性意义(P < 0.05);④腭咽及舌咽气道表面积及体积无明显变化,各段气道高度无明显变化;⑤说明生长发育期上颌牙弓狭窄患者经上颌快速扩弓治疗后,鼻上颌复合体增宽,鼻咽体积及表面积增大,口咽段及喉咽段气道无明显变化。

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
ORCID: 0000-0001-6598-490X(罗春花)

关键词: 组织构建, 组织工程, 上气道, 上颌宽度不足, 上颌快速扩弓, 三维重建, 锥体束CT

Abstract:

BACKGROUND: Two-dimensional radiographs and plaster models are used to evaluate the changes in the maxillary bone and airway after rapid maxillary expansion, but the shortcomings like distortion, one-sidedness, and overlapping appear. Cone-beam CT can effectively solve the above problems and achieve the three-dimensional reconstruction and measurement of the maxillary bone and airway. 
OBJECTIVE: To investigate the morphological changes of nasomaxillary complex and upper airway in adolescent patients with malocclusion after rapid maxillary expansion by cone-beam CT and Dolphin software.
METHODS: Thirty adolescent patients with malocclusion were enrolled to receive rapid maxillary expansion.
All patients underwent cone-beam CT examination before and after treatment, and Dolphin software was used for image processing, three-dimensional reconstruction, fixed point and measurement, to evaluate the morphological changes of the nasomaxillary complex and upper airway.
RESULTS AND CONCLUSION: After treatment, the nasal cavity and maxillary width was increased by (2.13±1.80) and (4.12±2.15) mm, respectively (P < 0.05); the coronal diameter and area of the airway on the hard plate was increased by (3.30±2056) mm and (75.37±53.92) mm2, respectively (P < 0.05), and all above indexes showed significant difference compared with baseline. While the sagittal diameter of the airway on the hard plate showed no significant changes. After treatment, the upper airway showed a significant increase in the area and volume at the nasopharynx, which was increase by (33.57±57.10) mm2 and (1 009.59±1 350.91) mm3, respectively (P < 0.05). The upper airway showed no significant changes in the area and volume at the velopharynx and glossopharynx, as well as the height at each part. To conclude, in the growing patients with malocclusion after rapid maxillary expansion, the nasomaxillary complex and area and volume of upper airway at the nasopharynx showed a significant increase, but the airway at the velopharynx and glossopharynx reveal no significant changes.

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: Maxillary Diseases, Pyramidal Tracts, Tissue Engineering

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