4.[Methods] 3-D models of postcrown and bone complexes were constructed by pro/e software. Set cement thickness changing from 0.01mm to 0.1mm and cement modulus of 1200MPa,4000MPa,51100MPa,and 13400MPa in Ansys workbench environment.
6.Objective Probe into method and clinical significance of casting cavity-retention form post-core crown in restoring residual crown and root of the short molar.
9.Methods: 70 residual teeth of 65 patients were endodontically treated and restored by post and core crown with dual metal ferrule, followed up for 1~2 years.
