CBCT三维头影测量正中矢状参考平面的探究

›› 2017, Vol. 37 ›› Issue (7): 621-624.

CBCT三维头影测量正中矢状参考平面的探究

王嘉艺¹,王珊¹,王林²

1. 南京医科大学附属口腔医院
2. 江苏省口腔医院

收稿日期:2017-01-09 修回日期:2017-02-17 出版日期:2017-07-28 发布日期:2017-07-18
通讯作者: 王嘉艺 E-mail:531460107@qq.com
基金资助:
国家自然科学基金资助项目（81230022）

A study on the midsagittal reference plane of CBCT three-dimensional cephalometry

Shan Wang²,

Received:2017-01-09 Revised:2017-02-17 Online:2017-07-28 Published:2017-07-18

摘要/Abstract

摘要：

目的利用CBCT对以S、N、Ba、Cg、PNS 5点构成的10种临床常用的正中矢状参考平面进行比较,评价其准确性，为日后建立CBCT三维头影测量面部对称性分析系统提供参考。方法挑选53例12～20岁面部基本对称的正畸患者,拍摄头颅CBCT片,以10种常用的正中矢状参考平面为基准,分别计算出每位患者的面部不对称指数。结果 10个平面间有显著性差异(P﹤0.05)，标志点到以S、N、Ba确定的正中矢状参考平面的面部不对称指数（11.07±4.146）最小。结论基于CBCT三维头影测量，以S、N、Ba点确定的正中矢状面的准确性最高。

关键词: CBCT, 三维头影测量, 对称性, 正中矢状参考平面

Abstract:

Objective To adopt Cone-beam CT to conduct the comparison among10 midsagittal reference planes which are made by the 5 points S, N, Ba, Cg, PNS, mostly used in the clinical orthodontics, to valuate their accuracy and provide references for the establishment of the CBCT three-dimensional cephalometry facial symmetry analysis system in the future. Methods 53 cases of 12～20-year-old patients with facial symmetry were selected, skull CBCT images were taken, and the facial asymmetry index of each patient was calculated on the basis of 10 kinds of commonly used midsagittal reference planes. Results There was a significant difference among the 10 planes(P﹤0.05), and the facial asymmetry index was the smallest of the midsagittal plane determined by S, N and Ba（11.07±4.146）.Conclusion Based on the results of the CBCT three-dimensional cephalometry, the accuracy of the midsagittal reference plane determined by the S, N, Ba is the highest one.

Key words: CBCT, three-dimensional cephalometry, symmetry, midsagittal reference plane

中图分类号:

R783.5

王嘉艺王珊王林. CBCT三维头影测量正中矢状参考平面的探究[J]. , 2017, 37(7): 621-624.

Shan Wang. A study on the midsagittal reference plane of CBCT three-dimensional cephalometry[J]. , 2017, 37(7): 621-624.

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