Objective: The aim of this study is to evaluate survival and complications associated with short implants (6 <8 mm) in the rehabilitation of patients with atrophic ridges of the mandible. Materials and Methods: We performed a prospective study in 78 patients (32 women and 46 men, age: 54.6 years, range 38–63) participated with atrophied mandibles with 702 short implants (Bicon, LLC, USA).104 implants were 5.0mm long, 485 implants were 6.0mm long, and 123 implants were 8.0mm long, diameters implants from 3.0mm to 6mm) All patients underwent a thorough clinical examination according to the generally accepted scheme. The study included patients in whom the location of the inferior alveolar canal from the crest was 6–9mm, width ≥5 mm (as determined radiographically). All patients were selected after meticulous evaluation of their medical histories and dental examinations, including dental cone beam CT scans. Of the total number of patients (78), 27 patients were edentulous, 51 patients were partially edentulous. 27 edentulous patients, implants were inserted using surgical guides. All implants were installed with a conventional surgical protocol. Postoperative therapy included antibacterial, anti-inflammatory drugs. Implantation was carried out according to a standard two-stage protocol developed by the manufacturer. The 3 months later after in second stage implantation, the method of RFA-Resonance Frequency Analysis method was used. The functional load on dental implants was performed with ISQ values above >65. The prosthodontic rehabilitation was carried with implant supported non-removable orthopedic structures. The following parameters were recorded and evaluated: implant survival, MBL over time. The marginal bone lose MBL of the jaw around the implant was also 3 months after loading the prosthesis; and 1 year, 2 years, 3 years and 5 years after implant placement. Results: We analyzed data from 76 patients who were assigned to 702 implants (in the mandible). No postoperative complications were reported. All patients had healthy soft tissues. The mean implant stability index (ISQ) was 69.2±10.6 for primary stability at implants placement, respectively 73, 6 ISQ after 3 months befor loading. Compared to baseline, mean marginal bone loss (MBL) after 6 months of prosthetic loading was 0.51±0.28, at the end of the 1 year 0.94±0.31, at the end of the 3 year 1.23±0.34 respectively, at the end of the 5 year 1.45±0.61. On average, over the observation period (42.6 ± 16.4 months), the implantation success rate was 96.8% in the lower jaw (two implants were lost), and the prosthetics success rate was 98.7%.The results obtained are comparable with success criteria in implant rehabilitation. The reported technique proved to be successful in the population observed, with minimal trauma and reduced invasiveness. The patients were satisfied with the aesthetic and functional result of the treatment. Conclusion: In patients with mandible bone atrophy, short implants with an optimized macrostructure represent a reliable method of functional rehabilitation. The results showed that short implants with is effective in improving the chewing ability of the patients with an atrophied mandible.