逆向工程技术法构建牙体缺损修复的三维有限元模型  

Construction of 3-dimensional finite element models of tooth with structure defect restoration by reverse engineering technology

作　　者：田力丽[1] 李凌旻[2] 谢秋菲[3] 麦汉超[2] 

机构地区：[1]北京中日友好医院口腔科,100029 [2]北京航空航天大学航空科学与工程学院 [3]北京大学口腔医学院修复科

出　　处：《实用口腔医学杂志》2006年第4期502-505,共4页Journal of Practical Stomatology

摘　　要：目的:建立下颌第一磨牙牙体缺损及修复的三维有限元模型。方法:采用逆向工程技术,通过三维激光扫描技术,三维造型设计技术建模。结果:建立了右下颌第一磨牙具有根管和远中面最小缺损的全冠修复牙体预备体、充填体、金属冠、牙周膜的三维有限元模型。结论:该方法弥补了现有牙体建模方法的不足,模型的几何相似性得到了很大的提高。Objective：To construct of 3-dimensional finite element models of mandibular first molar with structure defect restoration. Methods： Reverse engineering technology was used. Geometric models were built by the use of advanced 3-dimensional laser scanning and computer assisted 3-dimensional design technique. The geometric data were introduced into the finite element software for establishing the finite element mesh after being processed. Results：The 3-dimensional finite element models of the minimum distal occlusal structure defect with restoration were created, which included metal crown with exterior anatomic morphology of the mandibular first molar, tooth preparation, filling material and the structure of periodontal membrane. Conclusion： The method may be a useful approach for building models of teeth and relative tissues.

关 键 词：下颌第一磨牙 牙体缺损 修复 三维有限元 

分 类 号：R783.3[医药卫生—口腔医学]