关键词: 不规则网格曲面, 点云数据, 有限元分析, 距离场, 力矢量分解

Abstract: From points cloud data of scanned tooth, the optimized fast marching distance field
construction algorithm is used to achieve rapid generation of high-precision dental crown model. And
by using CAE stress finite element analysis method the force of each element and node is gained, the
force relationship between finite element solid mesh and triangular mesh model patch is established.
Using simulation-guiding-design method the manual processing in normal clinical treatment is
digitalized and virtualized. Thus the modeling speed is effectively increased and the model
recondition is advanced to the designing period. Through this method the model is created and
optimized based on CAE, which can simplify the treatment process, shorten the treatment period and
reduce patients′ suffering.

Key words: irregular mesh surface, points cloud data, finite element analysis, distance field;
decomposition of force vector