SD-CONCAVE Osteotome S-KitThe DSI Osteotome S Kit For Bone Condensing and Sinus Lifting provides a range of concave osteotomes of assorted diameters which are purpose built for implant placement within the softer maxillary bone. Utilizing these devices, you can compress bone without sacrificing any material in order to form a denser bond between bone and implant. Furthermore, the concave osteotomes allow for the raising of mucous membranes to provide security for implants