上颌反复快速扩缩对上气道影响的锥束CT研究

发布时间：2018-02-15 08:20

本文关键词： 腭扩张术锥束计算机体层摄影术上气道　出处：《北京大学学报(医学版)》2017年04期 　论文类型：期刊论文

【摘要】：目的:使用锥束CT(cone-beam computed tomography,CBCT)以传统的上颌单次快速扩弓的方法为对照,研究上颌反复快速扩缩后上气道不同部位的三维变化。方法:选择36例上颌骨发育不足患儿,随机分为A、B两组,每组18例,A组上颌单次快速扩弓,B组上颌反复快速扩缩。使用Dolphin软件对所有病例扩弓或扩缩前后CBCT影像进行测量。结果:B组2例患者在治疗中失访。A、B两组性别分布、年龄及治疗前各测量项目差异均无统计学意义(P0.05)。组内对比显示,两组患者在上颌单次快速扩弓或反复快速扩缩后,鼻腔底部宽度、鼻腔外缘宽度、鼻腔体积及鼻咽体积均较治疗前显著增大(P0.05),口咽体积、下咽腔体积治疗前后差异均无统计学意义(P0.05),鼻腔底部及外缘前/中/后三段宽度增加量差异均无统计学意义(P0.05)。两组组间所有测量项目的变化量差异均无统计学意义(P0.05)。结论:上颌反复快速扩缩可使鼻腔、鼻咽体积增大,增大程度与上颌单次扩弓相似,对口咽及下咽腔无明显影响。
[Abstract]:Objective: to study the three dimensional changes of different parts of upper airway after repeated rapid maxillary expansion by using cone-beam CT(cone-beam computed tomography-CBCT.Methods: 36 cases of maxillary hypoplasia were studied. They were randomly divided into two groups: group A and group B. Dolphin software was used to measure the CBCT images of all cases before and after expansion. Results the sex distribution of two patients in group B was lost in treatment. There was no significant difference in age and before treatment between the two groups (P 0.05). The results showed that the width of the nasal floor and the outer edge of the nasal cavity were significantly different between the two groups after a single rapid arch expansion or repeated rapid expansion of the maxilla. The volume of nasal cavity and nasopharynx were significantly larger than that before treatment. There was no significant difference in hypopharyngeal volume before and after treatment (P 0.05), and there was no significant difference in the anterior / middle / posterior width of nasal cavity and the anterior / middle / posterior edge of nasal cavity. There was no significant difference in the changes of all items measured between the two groups. Conclusion: repeated rapid expansion of maxilla can cause nasal cavity, The volume of nasopharynx was enlarged and the degree of enlargement was similar to that of maxillary arch expansion, but had no obvious effect on oropharyngeal and hypopharyngeal cavity.
【作者单位】：北京大学口腔医学院·口腔医院正畸科口腔数字化医疗技术和材料国家工程实验室口腔数字医学北京市重点实验室;
【分类号】：R783.5

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