Introduction: Most implant systems use drilling with irrigation to avoid the overheating of the bone. In the relatively high speed technique, irrigation may not reach the full depth of osteotomy. This triggered the use of low speed drilling technique without irrigation.
Objectives: were the assessment of heat generation and marginal bone loss around implants placed by drilling speed 150 rpm without irrigation compared with implants placed by drilling speed 1200 rpm with irrigation up to one-year follow up. Materials and Methods: A total of 12 patients were enrolled in this study. Forty implants were placed bilaterally in the posterior mandibular region. Each patient received the two types of drilling techniques. The temperature of the bone was measured before and after the implant site preparation by thermocouples. The marginal bone loss was evaluated by CBCT. Results: there was statistically different in temperature of bone between the two drilling techniques. Marginal bone loss showed no statistical difference. Conclusion: Low speed drilling 150 rpm without irrigation is a successful and applicable drilling technique in implant site preparation regardless of its relatively high temperature, as it did not exceed the critical limit.