论文部分内容阅读
Aim:To explore the value of the combination of the reverse engineering software and Micro_CT technique in the reconstruction of the fine 3D FEA model of the tooth structure.Reconstruct the fine 3D FEA model of the crown of the human maxillary first premolar.Method:Micro_CT was used to scan the intact maxillary first premolar.Import the CT images to Mimics vS.l software and prefabricate the 3D model.Then,after improvement,in the Geomagic 7 software,the model that can be identified by the FEA software is accomplished.At last,in Ansys 9.0 software,by Boolean operation,different parts of the crown(enamel、dentin and pulp cavity) are separated,and the 3D mesh were created respectively.Result:The fine 3D FlEA model of the crown of the maxillary first premolar was constructed successfully.After 3D meshing,the enamel has 154,355 tetrahedral elements,the dentin has 256,304 tetrahedral elements,in total,the crown has 410,659 10-node-tetrahedral elements.The accuracy of the model is very high.Conclusion:The combination of the reverse engineering software and Micro_CT technique is an effective way for the fine 3D FEA models reconstruction of the tooth structure.