Kau Chung How, Pan Philip, Gallerano Ron L, English Jeryl D
Department of Orthodontics, University of Texas Health Science Center, Houston, TX 77030, USA.
Int J Med Robot. 2009 Sep;5(3):291-6. doi: 10.1002/rcs.260.
3D cone beam imaging allows localization of impacted canines, using spatial relationships, with excellent tissue contrast. The aim of this project was to assess the degree of difficulty for the treatment of impacted canines, based on the 3D information provided by cone beam imaging.
3D cone beam images taken from subjects with impacted canines were obtained from a private practice and school setting.
A novel measuring scale was devised, based on three different viewpoints, in order to grade the difficulty of impaction and the potential efficacy of treatment. Depending on its anatomical location, the cusp tip and the root tip are each given a number 0-5 in three dimensions taken from a pretreatment image. The sum of the cusp tip and root tip scores in the three views dictated our anticipated difficulty of treatment.
A novel method of analysing impactions using cone beam imaging was proposed. This method utilizes the entire three views of a CBCT image.
三维锥形束成像可利用空间关系定位阻生犬齿，具有出色的组织对比度。本项目的目的是基于锥形束成像提供的三维信息评估阻生犬齿的治疗难度。
从私人诊所和学校环境中获取有阻生犬齿受试者的三维锥形束图像。
基于三种不同视角设计了一种新颖的测量量表，用于对阻生难度和治疗潜在疗效进行分级。根据其解剖位置，在预处理图像的三个维度上，牙尖和根尖各被赋予0至5的数字。三个视角下牙尖和根尖分数的总和决定了我们预期的治疗难度。
提出了一种利用锥形束成像分析阻生情况的新方法。该方法利用了CBCT图像的全部三个视角。
