Effect of retention grooves on stress distribution at the resin tooth denture resin interface : a finite element study

Abstract EN

Aim of the study : Evaluate the effect of retention holes and other retention means on the stress distribution at the denture tooth / denture resin interface, in an attempt to increase the retention force of the tooth on impact.

Material and methods : A two-dimensional plain strain finite element model was designed to simulate the anterior portion of the complete denture.

Different designs of grooves were made on the tooth ridge lap and examined by the ANSYS program for the stress distribution.

Results : The model with triangular grooves and the model with 3 grooves showed the best stress distribution along the resin tooth / denture resin interface.

Conclusion : Putting small multiple grooves along the tooth ridge lap showed to be beneficial in distribution of the forces along the ridge lap.