Objectives:
The objective of this study was to compare ZrO
2
, polyether ether ketone (PEEK), and ZrO
2
-PEEK telescopic attachments in terms of retention of overdenture.
Methodology:
Forty-five acrylic resin models of the lower arch were divided into 3 groups of 15 each. In Group I, primary and secondary crowns were constructed from all zirconia (ZrO
2
), whereas all PEEK was used for Group II and Group III was made up of ZrO
2
PEEK.
Results:
The mean retention value in Group I was 14.12 ± 3.4 N, in Group II was 15.86 ± 5.1, and in Group III was 22.40 ± 10.3 N. The mean final initial retention value in Group I was 14.50 ± 6.1 N, in Group II was 14.97 ± 8.2, and in Group III was 17.21 ± 9.3 N. A significant difference was observed in intergroup comparison (
P
< 0.05).
Conclusion:
Zirconia resulted in maximum retention as compared to other telescopic crown materials.
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