Purpose:The purpose of this study is to evaluate Ti-base abutment's three different heights and three different cement types on the pull-off force of zirconia-based restorations.Materials and Methods: A total of 90 fixture lab analogs were embedded in auto polymerizing resin bloack.90 Ti-base abutments heights of 3 mm, 5 mm, 7 mm were scanned and zirconia restoration were prepared from scanned files.Zirconia restoration were cemented with three different types of cements (temporary, semipermanent, permanent) following manufacturer's instructions.All 90 specimens were placed and tested in a universal testing machine for pull-out testing.Retention was measured by recording the force at load drop.Statistical analysis was performed using Kruskal-Wallis test for detecting whether there are any statistical significance along cement types or abutment heights.After that, Mann-Whitney test was used for figuring out differences regarding abutment height and the comparison between 3 cements.Results: Temp bond showed significantly lower pull-off force compared to Fujicem regardless of any abutment height.However, there were significant differences between Cem-implant and Fujicem in abutment height of 3 mm and 7 mm, but there was no significant difference in 5 mm.Temp bond and Cem-implant had significant differences only in abutment height of 5 mm. Conclusion:Although Ti-base abutment height did not influenced zirconia restorations' retentiveness, cement types showed significant differences.