Aims and objective: Acrylic teeth often get debonded from the denture bases. The present study was conducted with the aim of comparative evaluation of different mechanical modifications and surface treatment of denture teeth on shear bond strength between TREVALON heat cure resin and cross–liked acrylic teeth.

Materials and Methods: A statistically significant no. of the test specimens i.e. maxillary right central incisors [11] were collected and further divided into 4 groups. Group 1: control, whereas group 2, group 3 and group 4 were experimental groups. These experimental test groups included surface roughening of ridge lap with sandpaper grit no –100, T–shaped groove, and T–shaped groove painted with dicloromethane, respectively. The preparation of masterpiece was done by aligning the long axis of the central incisor teeth at 45° to the base of a wax block, with ridge lap surface contacting the base. These test specimens were prepared by  using TREVALON heat cure resin. A shear load was applied at palatal surface of central incisor [11] using Universal Testing Machine (UTM) until failure occurred.

Results: Group 1 or Control Group specimens prepared by TREVALON heat cure resin showed the lowest shear bond strength value whereas Group 4 specimens prepared with T shaped groove along with application of dicloromethane packed with TREVALON showed the highest shear bond strength value.

Conclusion Within the limitations of this study, it can be concluded that the specimens prepared with T shaped groove by application of dicloromethane packed with Trevalon heat cure resin showed highest bond strength value, therefore this modification can be recommended as a reliable method to secure denture teeth in denture bases.