Effect of glass fiber reinforcement surface treatment on the soft liner retention and longevity

Abstract EN

Background: Denture liners have been used in dentistry for many years.

Soft denture liner is one of the denture liners which used to enhance the fit of poor fitting dentures and prevent trauma to sensitive mucosa.

One of the disadvantages of the soft denture liner is the frequent debonding from the denture during clinical use thus reducing the longevity of such prosthesis.

Glass fibers integrated at or on the fitting surface of the denture used to improve the bonding of the silicone soft liner to the acrylic surface.

Materials and methods: the shear bond strength calculated to evaluate the effect of the glass fiber surface treatment on the bonding between the acrylic surface and the silicon soft liner.

120 samples were prepared and divided into 3 major groups: Group I for the conventional heat cure acrylic, Group II for the pour acrylic and Group III for the light cure acrylic.

Each one of these major groups divided into 2 subgroups, the first one for the Mollosil silicon soft liner and the second one is for the Molloplast-B silicon soft liner.

Each one of these sub groups consist of 2 types of the acrylic surface: smooth (control) and glass fiber net surface treatment.

Results: this study revealed that some types of the surface treatment exhibited a highly significant improvement in the bonding between the acrylic surface and the soft liner.

Conclusion: glass fiber surface treatment could improve the bonding between the acrylic surface and the soft liner.