结合Matlab重建下颌第一磨牙CT图像的三维透视模型

Rreconstruction of three dimensional(3D) perspective model of mandibular first molar's CT image in combine with MATLAB

目的:建立下颌第一磨牙三维模型,多角度展示牙髓解剖形态,以此作为辅助教学及进一步研究的基础。方法:以成年右下颌第一磨牙为对象,应用CT扫描获得断面信息后,经图像去噪、图像二值化、图像分离等操作,利用MathWorks公司的Matlab7.0软件重建牙齿的三维模型。结果:采用CT扫描获取图像并用数学建模软件重建出的模型,形态逼真,轮廓清晰,真实地反映牙体、牙髓的位置与形态关系。结论:结合Mat-lab建立的下颌第一磨牙三维透视模型,可以真实准确地反映牙体结构,并可进行进一步的计算机辅助设计处理,为生物力学分析奠定基础,并摸索出一套行之有效、方便快捷的建模方法。

AIM：To construct three dimensional（3D） perspective model of mandibular first molar and show its dental pulp dissected form in multi-angtes,than take it as the assisted instruction and also as the base of mechanical analysis.MEHTODS：The image of an adult＇s right mandibular first molar was taken as the object,then the section information by CT-scan was obtained,After following operations,such as image denoising,image binaryzation,image separation and so on,reconstruction of the three dimensional（3D） model of tooth was obtained using Math Works Corporation＇s MATLAB Software.RESULTS：Adopting CT-scan image the model reconstructed by Mathematical Modeling is realistically and clear-cut.Meanwhile,it reflects the relation of position and form between tooth and dental pulp.CONCLUSION：The thee dimensional（3D） perspective model of mandibular first molar,constructed in combine with MATLAB,can reflect the tooth structure truly and accurately.It also can proceed further CAD treatment,laid a foundation for biomechanics.Furthermore,it may be an effective and convenient modeling method.