Abstract: Objective To evaluate the clinical results of placing short dental implants in the posterior maxillae and mandibles and investigate the effect of crown-implant ratio (C/I) on the outcome of implant-supported prosthesis. Methods A total of 65 patients received 98 short implants ( ≤ 8.0 mm length) placement. A total of 98 implants were placed and restored. Clinical examination and radiographs were performed. The length of the crown and implant were measured to determine the C/I. Results All of the 98 implants gained osseointegration and were restored. The C/I of 92 (94% of the total ) implants was greater than 1. No implants was found lost during the follow-up. Conclusions Placing short dental implants in the posterior areas had a predictable outcome in patients with decreased bone height. There are also avoidance of surgical procedures, the benefits of decreased treatment time and less discomfort for the patients.