Introduction: Oral rehabilitation of partially and completely edentulous patients with dental implants currently involves routine prosthodontic and implant procedures. Methodology: The study was carried out in Department of Prosthodontics and Crown & Bridge, School of Dental Sciences, Sharda University, Greater Noida. Biohorizons implants and implant components were utilized in this study. A reference model was fabricated by attaching an open-tray abutment level impression coping to each abutment replica; resembling an all-on-4 clinical prosthetic situation. Atotal sample size of 108, nine samples per group, was determined to be sufficient to detect an effect size of 0.67 with 80% power at a 5% significance level. Results: Root mean square (RMS) for group I ranged from 0.046-0.1 mm (46-100µm). RMS for group II ranged from 0.058-0.58mm (58-580µm). RMS for group III ranged from 0.036- 0.078 mm (36-78µm). RMS for group IV ranged from 0.041-0.067mm) (41-67µm). Conclusion: Custom tray impression groups showed better results in comparison to the stock tray impression groups. The average value for both stock tray groups was 120 µm while the average for both custom tray impression groups was 55µm. There was asignificant difference between stock tray and custom tray impression groups.