DEVELOPMENT OF THREE DIMENSIONAL SOFTTISSUE ANALYSIS SOFTWARE FOR ORTI-IOGNATHIC SURGERY

口颌外科三维软组织分析软件的开发

• 批准号: 14571913
• 负责人: TAKAKI Takashi
• 金额: $ 1.86万
• 依托单位: TOKYO DENTAL COLLEGE
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14571913/
• 关键词: 3D-optic scanning; facial measurement; facial landmarks; 測定誤差; 三次元計測; 顔面軟組織

We were researched the basic study which were facial form change following the jaw movement by orthognathic surgery without taking a X-ray photograph. Before making three dimensional analysis software, we observed the reliability and stability of non-contacting 3D-optic scanning system(SURFLACER VMH-300F) which equipped cephalostats. We measured and analyzed the facial configurations of 10 adult Japanese by 5 times per one subject with using this system and reverse engineering software (Imageware9).The results were as follows.1. Operation of rectifying a position was able to be reduced the error to 0.63mm±0.15mm.2. Measurement with high precision was able to be performed by using cephalostats, without rectifying a position However, it was possible to have raised the accuracy more by rectifying.3. About the measurement datum point, the mean error was 2.68±0.89mm, the datum point of the metopic area had high reproducibility, and the datum point of angle of mouth and angle of mandible had low reproducibility.4. The position of head gapped by rotation centering on the earlod of cephalostats. It has been judged that there were few measurement errors of a face form, and they were useful system at clinical application for analysis of facial softtissue by the changes after orthognathic surgery. This study suggested us following, we making the softtisue analysis software, it is need the new module of automatic adjusting head positioning method with lotating earlod.

本研究对无X线摄片的正颌外科手术中颌骨移动后的面部形态变化进行了基础研究。在制作三维分析软件之前，我们观察了配备有固定器的非接触式三维光学扫描系统（SURFLACERVMH-300 F）的可靠性和稳定性。利用该系统和逆向工程软件（Imageware 9）对10名日本成年人的面部结构进行了5次测量和分析，结果如下.矫正位置手术可将误差减小到0.63mm± 0.15mm。使用头固定器可以进行高精度的测量，而不需要矫正位置，但是，通过矫正可以进一步提高精度。测量基准点的平均误差为2.68±0.89mm，其中额前区基准点重复性好，口角和下颌角基准点重复性差.以固定头器的耳垂为中心旋转而使头部张开的位置。该系统的测量误差小，可用于正颌外科手术后面部软组织的变化分析，具有一定的临床应用价值。本研究建议我们在软体分析软体的制作上，需要增加一个新的模组，即自动调整头摆耳定位法。