Bone Expander Drills/Kit are an alternate to OSTEOTOMES for the EXPANSION and Condensing of the ATROPHIC MANDIBLE and MAXILLA in Preparation for Dental Implant Placement. THIS UNIQUE and LATEST TECHNIQUE is an Alternate to the MAXILLAR SINUS ELEVATION PROCEDURE. Expanders are driven into the BONE with a Ratchet Wrench or Low Speed Hand Piece that decreases the Surgical Trauma of Osteotomes.