Abstract: A surgical tool for preparing a surgical sinus-lift osteotomy has a defined thread geometry in series with an osteotome tip to cut, crack and push bone from the sinus floor upward into the sinus cavity in a tactual, gentle and controlled motion. The apical osteotome tip is driven into a pre-drilled pilot osteotomy after the cutting threads are engaged and rotated until the sinus floor is cracked free. Once the bony sinus floor is cracked free, a fluid passageway can be pressurized with a sterile fluid at a defined pressure to release and push the sinus membrane upward into the sinus cavity to create a desired apical cavity for grafting while minimizing the risk of compromising or tearing the sinus membrane.

Abstract: An endosseous dental implant system has an externally threaded root-formed base 2 with self-tapping flutes 5 formed into apical threads of the root-formed base for easy insertion and immediate locking in an osteotomy. The coronal portion of the base has either a male or a female self-locking tapered friction held post that includes an apical anti-rotational polygon 7, 23 to lock a prosthetic attachment to the base once attached.

Abstract: A maxillofacial anchoring and distraction system having an internally threaded anchoring or distraction fixture (12) and a selected length jack screw (14) for placement in an osteotomy. To minimize required bone height, a cut-away bone screw (16) or a solid mesh tip (17) is provided for insertion in bone in a direction generally perpendicular to the longitudinal axes of the anchoring and jack screws. A flat surface portion (16c, 17a) serves as a reaction surface for the distal end of the jack screw. In a second embodiment a sealing screw (24) is used with distraction fixture (20) modified to include a sealing surface. After completion of distraction the sealing screw is used to seal off the distraction fixture for conversion into an implant suitable for receiving conventional prosthetic components.

Abstract: A combined internal polygonal and locking drive tool (10,10′) used to engage a mating external implant mounting and drive fixture (12). The locking drive has an internal tapered locking drive section (10b) which is longitudinally in series with an internal polygonal section (10d) and has its largest diameter slightly larger than the smallest diameter of the internal polygonal portion. The combined delivery and drive tool can be incorporated with an external hand drive or power drill drive surface configuration.

Abstract: A dental torque ratchet head and driver handle (8) is formed with a chamber (12a) between first (30) and second (32) pivotably mounted handle members which receives a plastic insert (14) formed in a configuration selected so that the insert fractures at a selected torque to thereby ensure the application of a precalibrated level or torque to an abutment or prosthetic screw of an implant. A solid metal insert (14') can be used to convert the tool to a straight ratchet tool.

Abstract: A self-locking and threaded bone tack screw device (10) for fixing and retaining tissue grafts and synthetic membranes directly to a maxillofacial bone graft site. The tack has an oversized cylindrical dome shaped head (14) for retaining the tissue and synthetic membrane to the bone graft site and a hexagonal recess (14a) for easy insertion and removal of the device. The tip of the device incorporates a sharp pin point (12a) to easily pierce the tissue and membrane and initially penetrate into the bone graft site. A locking flange (12c) locks into the bone graft site in a single direction. A self-tapping screw thread (12f) is provided for driving the pin point tip into the bone graft site. Incorporation of the self-locking pin point tip in series with the self-tapping thread allows the hexagonal tool driven bone tack to be easily inserted and removed from the graft site without compromising its fixation.