Alveolar atrophy may present an anatomical limitation to the placement of endosseous implant. The ridge expansion technique is used to expand narrow edentulous ridge for implant placement. There are many techniques for ridge expansion. Aim of the present case report is to describe a ridge expansion technique using Densah bur kit technology to allow the implant placement in atrophic mandibular edentulous ridges. The Densah Bur technology is based on biomechanical bone preparation technique called “Osseodensification”. Osseo densification does not remove bone tissue, rather bone is simultaneously compacted and auto- grafted in outward (expanding) directions from the osteotomy. This is a case report of a patient with narrow edentulous posterior mandibular ridge with 3-4 mm of remaining bone width which is treated with ridge split technique using Densah Bur Kit that results is osseodensification
