Evaluation of the Deformations on the Jaw Bone Due to a Band and Loop, Nance Appliance and Trans-Palatal Arch Space-Maintainers: A Three-dimensional Finite Element Analysis

In cases where the loss of a primary tooth is unavoidable and the child is at a development stage, it is important to preserve the remaining space by a space-maintainer. To evaluate the response and characteristic behavior of three different space-maintainers (band and loop, Nance appliance, and Trans-palatal arch) subjected to masticatory forces with 3D Finite Element Analysis. It is a three-dimensional digital solid model that was prepared with ‘Solid Edge V20’ software. The ‘ANSYS Workbench ‘software was used in conjunction with ‘Solid Edge V20’ to simulate the behavior of the objects (teeth and the devices) under structural loading conditions. The forces and constraints are applied in appropriate magnitude and direction. The Von misses stresses; strains and deformation were derived for all three designs and jaw without the device. The range of deformation for band and loop is 0 to 4.6292e-6, for Nance-appliance is 0 to 3.7612e-6 and for the trans-palatal arch is to 3.7666e-6. The deformation range for the model without the appliance is 0 to 4.9676e-6. The finite element analysis shows that the Nance appliance shows the least deformation among all the three selected designs.

Author(s): Dr. Rashmi Uddanwadiker

Abstract | PDF

Share This Article