Abstract: Objective: To investigate the effect of cements on the stress distribution of all ceramic crowns and agglomerants. Methods: CBCT images was used to construct the finite element analysis mode, including the core layer and the veneer layer of the crown, cement, tooth crown, tooth root, periodontal ligament and alveolar bone. 200N load was designed in three directions. The stress values of the veneer layer and the cement layer with different kinds of cements (3M Luting2, DMG PermaCem, and Kerr Maxcem elite) were analysed by ANSYS software. The equivalent stress (Von Mises stress) and the maximum principal stress (S1 stress) distribution were recorded. Results: The stress on the cement layer and the veneer layer were mainly concentrated around the loading point. With the increasing of elastic modulus of the cements, the Von Mises stress and the S1 stress on the cement layer was enhanced, but the von Mises stress and the S1 stress on the veneer layer was reduced. Conclusion: In the loading test, the Von Mises stress and the S1 stress on the all ceramic crown with different kinds of cements were tended to concentrate on the loading side. The cements with high elastic modulus may reduce the stress on the veneer layer of the crown.

Key words: 3-dimensional finite element, All-ceramic crown, Stress distribution