Objective: - tocompare, clinically and radiographically short dental implants placement in maxilla to short dental implants placement in mandible.Methods: -Fifteen participants with 7–9 mm of bone height in the posterior maxilla (test group) and 15participants with 8.5–10 mm of bone height in the posterior mandible (control group) were selected to receive 8 mm or 6.5 mm length short dental implants(OsteoCare™ Implant System, London, UK).Implants were loaded 4 months (T2) after placement. Patientswere evaluated 12 months after loading (T3). Outcome variables included: Implant stability measured by Periotest®M, Implant failure rate, marginal bone level (MBL) and complications. Statistical analysis was performed using parametric tests.Results: - in 30 subjects, 32 SHIs were evaluated one year after loading (T3). No patients drop out in both groups.Implant failure in maxilla was 13.3% while it was 0% in mandible. Thedifference showing no statistical significant (P=0.4828).The mean PTMVs were -1.23±0.31 of SHIs in maxilla, while the mean PTMVs were -2±0.23 of SHIs in mandible, thedifference showing no statistical significant (P=0.0585).SHIs in maxilla lost -1.55±0.29 mm of peri-implant marginal bone and SHIs in mandible lost -1.10±0.12 mm of peri-implant marginal bone 1 year after loading, the difference between the two groups showing no statistical significance (difference = -0.44 mm; 95% CI:-0.18 to 1.06; P = 0.1549).Conclusion: - One year after loading, the placement of 6.5 mm short dental implants in the posterior mandible showing more predictable results than short implants placement in the posterior maxilla, however 5 to 10 year post-loading data are necessary before reliable recommendations can be made.