Abstract: Objective: To evaluate the clinical and radiographic outcomes of the osteotome sinus floor elevation technique and simultaneous dental implantation without grafting. Methods: The study population comprised 38 patients in whom 58 implants were inserted with the osteotome sinus floor elevation technique without grafting. Implant survival rate and radiological examination of all implants were estimated after 6 months, 1 year and 3 years. Result: One implant was off at the 1-year follow-up, and one more at the 3-year examination. The remaining 56 implants inserted were in function, giving a 3-year cumulative survival rate of 96.6%. The mean height of the alveolar process at the intended implant sites was 5.8±0.2 mm, and the mean elevation of the sinus floor was 5.1±0.3 mm. New bone regeneration around implant was found in sinus by radiological examination. The mean high of the new bone was 2.4mm at the 6-month follow-up, and 2.8mm at the 1-year. There was no significant difference between 1-year and 3-year. Conclusion: The osteotome sinus floor elevation technique with simultaneous dental implantation without grafting is feasible. The present study supports the theory that maxillary sinus mucosa has a great potential of bone formation.