Finite Elemental Analysis Of The Stress Of Inlay Made From Different Materials

Objective: It is common to have teeth damaged due to dental caries or other reasons. It would directly lead to the miss of teeth, if the damaged teeth cannot be fixed in time. There are two leading techniques in curing molar occlusal and proximal occlusal cavities: one is filling materials, the other is fixing crown. They have some unavoided drawbacks, though they do well in the clinic. On the contrary, the inlay has many advantages and is widely welcomed by patients and dentists. It only needs to abrade few teeth, and the inlay is hardly broken. The connections are well recovered, and it can also effectively avoid stuffing food. The tooth shape and caries can also recover. It can also protect the thin teeth and prevent teeth from getting broken.With the method of the finite elemental analysis of the stress, we analyze the force to teeth and inlay after treating with five different materials from the perspective of stress. These theories are useful in the application of the inlay.Methods: First, the inlay of the first molar of mandibular is built with the software of Pro/Engineer. The figures obtained are then imported into the three-dimensional finite element software-ANSYS in which the model can be automatically web separated. The magnitude of occlusal load is respectively. The magnitude and distribution of maximum Von Mises stress and maximum principal stress in enamel, dentine and composite restorations are compared.Results: 1. To some extent, stresses concentrated in inlay restored teeth.