Background: Prolonged edentulism leads to progressive alveolar bone loss resulting in failure in complete denture treatment modality. This study compared ZrO2, PEEK, and ZrO2-PEEK telescopic attachments in terms of retention of overdenture. Materials & Methods: 60acrylic resin model of lower arch were divided into 3 groups of 20 each. Group I was those in which primary and secondary crown were prepared from all zirconia (ZrO2), group II were made up of all PEEK and group III were made up of ZrO2-PEEK. Results: The mean initial retention value in group I was 14.5 N, in group II was 15.8 N and in group III was 21.7 N. The difference was significant (P< 0.05). The mean final initial retention value in group I was 14.8 N, in group II was 14.1 N and in group III was 17.4 N. The difference was significant (P< 0.05). Conclusion: Authors found that zirconia resulted maximum retention as compared to other telescopic crown materials.