Abstract: A self-positioning and self-starting, tapered thread, orthodontic bone screw (25) for use in intra-oral corrections that serves as a craniomaxillofacial rigid post for orthodontic appliance fixation. The tip of the bone screw incorporates a defined sharp pin-point tack tip (2) to easily pierce the soft tissue and initially penetrate into the host bone for alignment and penetration. In series with the tack tip is a self-tapping, double, tapered thread (11) which allows an orthodontist to insert the bone screw post into the host bone in a single operation without the need for opening or flapping the surrounding soft tissue. As the bone screw penetrates the bone site, the tapered threads (24) allow for easy thread pick-up into the host bone while the increasing outer diameter of the thread (26) rigidly locks into the crestal bone. Once attached and fixated in the host bone, the distal cylindrical dome shaped driver head (12) acts as the fixation post for the anchorage of orthodontic appliances.

Abstract: A surgical tool (5) used 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. The invention solves the problems for preparing a sinus-lift surgical osteotomy and desired cavity space 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 the coronal attachment to the base once attached. The implant incorporates an esthetic biological gingival profile (10,11,31,32) to enhance inter-proximal bone attachment to the root-formed implant, which supports the surrounding papilla.

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.