基于通用CAD技术的三维假牙模型重建  

Three-dimensional reconstruction of dentures based on general CAD technology

作　　者：朱昱[1] 吴修娟[1] 吕婧婧[1] 倪红军[1] 黄明宇[1] 

机构地区：[1]南通大学机械工程学院,江苏省南通市226019

出　　处：《中国组织工程研究与临床康复》2011年第13期2345-2348,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：江苏省科技支撑计划项目(BE2009090);江苏省高校自然科学基金资助项目(08KJD430019);南通市应用研究计划项目(K2008008);南通大学研究生科技创新计划项目(YKC09057)~~

摘　　要：背景:由于全口假牙没有牙齿作为牙托的支撑,压力全部到牙龈上面,假牙活动咀嚼食物时不可避免对作为牙托支撑的牙龈进行磨损,患者也经常出现牙龈发炎和假牙托的金属过敏症状,因此为患者安装假牙前,医生必须先测试其对假牙材料的适应性。目的:对经历磨合期后的假牙进行三维模型重建。方法:使用激光扫描仪等数字采集设备采集了经过磨合期的全口假牙三维数据,利用逆向软件进行减少噪声点、数据滤波、数据精简及对缺失的数据进行修补等预处理并封装为三角曲面,通过Pro/E等三维设计软件实现模型的重建。结果与结论:通过激光扫描仪、CT等数字采集设备采集经过磨合期的全口假牙三维数据,利用逆向软件对采集到的数据进行预处理包括减少噪声点、数据精简、数据滤波及对缺失的数据进行修补等并提取曲线模型,最后在Pro/E等三维设计软件中实现了模型重建。重建的模型可为假牙的制作提供数字信息,也可以通过快速成型得到假牙的复制品。逆向重建的经过磨合期的全口假牙,不仅节约了时间,减少医生的劳动强度,还降低患者对材料过敏的风险,缩短患者与假牙的磨合期,减少患者的痛苦。BACKGROUND： The pressure is fully on the gum because complete dentures lack supports from the teeth. Gum inflammation and metal allergies often occur because of gum wearing when patients chew. Doctors must test the adaptability of the material on dentures firstly before installing dentures for patients. OBJECTIVE： To reconstruct three-dimensional model of dentures after running-in. METHODS： The three-dimensional data of complete dentures following running-in were collected by laser scanners and other digital acquisition equipment. The pre-processing, such as noise reduction, data filtering, data reduction and repair of the missing data, were performed using reverse software, and wrapped into triangular surface. The model was reconstructed using Pro/E or other 3D design software. RESULTS AND CONCLUSION： The three-dimensional data of complete dentures following running-in were collected by laser scanners, CT and other digital acquisition equipment. The pre-processing, such as noise reduction, data filtering, data reduction and repair of the missing data, were performed, and the curve model was extracted. The reconstruction of model was realized using the Pro/E or other 3D design software, which can provide digital information for making dentures. Copies of dentures can be obtained by rapid manufacturing. Complete dentures after running-in save time, reduce doctors＇ labor intensity, decrease the risk for allergy to materials, shorten running-in time between patients and dentures, and reduce patient＇s suffering.

关 键 词：逆向工程 假牙 磨合期 三维重建 数字化口腔科 

分 类 号：R318[医药卫生—生物医学工程]