Abstract: This invention relates to a prosthetic dental tooth implant for anchoring a tooth to the jaw bone of an individual. The device is a blade like section having a number of circular holes having a slot-like aperture in a bottom portion of the blade to provide flexure of the blade and outwardly bendable prong extending from a top portion of each hole for anchoring engagement against an inner surface of the cortical plates adjacent the aveolar tissue of the jaw bone.

Abstract: An oral implant for permanently implanting an artificial tooth supporting structure in a jawbone is adapted for use at a location where the jawbone is insufficient to support an implant blade. This implant includes a remote blade which is positioned into the jawbone at a location remote from the position where the artificial tooth is to be fixed and at a position where there is sufficient bone structure to support it. At least one post is positioned at the location where the artificial tooth is to be mounted. A cross-connecting structure connects the post and the remote blade.

Abstract: A rigid bar arranged to removably support an artificial denture is curved substantially to the longitudinal contour of the lower jaw bone. This bar has a front support arranged to be implanted in a front recess in the jaw bone and also includes a rear ramus implant portion on each side arranged to be implanted in the ramus portions of the jaw bone. Each of the ramus implant portions comprises a plate-like extension of the rigid bar having laterally facing surfaces. This rearward plate-like extension has an elongated length so as to project above or below the plane of the bar or in a preferred construction, such extension projects both above and below such bar to provide an extended implant attachment to the jaw bone structure. The plate-like extension angles forwardly from top to bottom so that it can be embedded efficiently in the rearward portion of the jaw bone.

Abstract: A method for the oral implantation of a dental prosthesis inside a tooth socket. This method comprises two basic steps, namely (a) creation of an artificial socket inside the maxillary bone and (b) implantation of a rigid support in the so-created socket to fix the prosthesis tooth. The first step is carried out by introducing a thin, sharp cutting tool having two cutting edges, in a predetermined direction in the depth of the bone using a thin probe as a guide for the blade, and subsequently opening the lateral walls of the hole formed by the cutting tool with a punch-shaped tool to create the artificial socket. The second step is carrying out by inserting inside the so created socket a scissors-like element comprising a pair of sharp blades each having a toothed edge, and subsequently separating these blades by introducing a thin pin between each other in such a manner that the teeth extending from the edges of the blades penetrate inside the walls or the artificial socket.

Abstract: Coated Prosthetic devices useful in the medical and dental fields, such as dental implants, intramedullary nails, and total hip prostheses, are provided having a porosity or density gradient in the sintered plastic coating. The higher porosity is at the outer surface which facilitates bone ingrowth while the lesser porosity which has a higher density and a more continuous plastic layer is on the inner surface and thus provides better adhesion to the load bearing component.

Abstract: An apparatus is disclosed for preparing a jawbone or the like for implantation of a dental implant. After exposing a selected area of the jawbone, accurately located guide holes are formed in the jawbone to receive a drill guide which facilitates forming a precise elongated slot by a burr between the guide holes, after which the slot is lengthened to include the initially formed guide holes and a properly configured dental implant may be pressed firmly into the slot.

Abstract: A prosthetic dental implant for anchoring to the mandible or maxilla for supporting artificial teeth and dentures includes a substantially flat yet slightly tapering endosteal blade portion constructed of a titanium alloy and including two columns of oblong slot-like apertures interior thereto and two edge columns of half-length oblong slot-like apertures. Support for an artificial tooth is provided by means of a support post which has a substantially circular lateral cross section throughout and an enlarged part-spherical lower portion and an upwardly and inwardly tapering portion thereabove. In an alternative arrangement, the vented concept provided by the slot-like apertures is replaced by a solid blade which includes a plurality of wedge-like lip portions outwardly extending from each side of the anchoring member and defining a recessed channel between adjacent lip portions, the lip portions and recessed channels on one side of the anchoring member being staggered from those on the opposite side.

Abstract: An angulation head for removable attachment to a dental implant of a type having a hollow interiorly threaded neck integrally attached to an implant portion comprises a stem at least a portion of which is exteriorly threaded and adapted to be screwed into the hollow neck, an integral cap, or flange to seat on top of the neck and a bendable upstanding head portion which is adaptable to be bent angularly with respect to the cap and stem by use of a manual bending tool. The bending tool comprises a hand held elongated holder for the angulation head and an elongated bending shaft for bending the head portion. The hand held holder includes an elongated handle having at one end a flat surface normal to the axis of the handle and an axial socket extending inwardly from said flat end for receiving the stem of the angulation head with the cap seated on the flat end, the socket having interior threads for engaging the threaded portion of the stem.

Abstract: Nontoxic polymeric plastic medical implants for endosteal and periosteal applications such as filling bone defects, replacing entire bony parts, and tooth replacement either immediately after extraction or subsequent to healing, and a method of fabricating such implants to produce a porous surface having a predetermined pore size, pore depth, and degree of porosity. The method of fabrication of the porous portion of the implant involves adding sodium chloride crystals or other nontoxic leachable substance of controlled particle size corresponding to the desired pore size to a powdered polymer-liquid monomer mixture in relative amounts corresponding to the desired degree of porosity. After heat polymerization without an initiator, followed by abrasive removal of the resulting surface skin, the salt is leached from the plastic to provide said porosity.

Abstract: An improved endo-osseous apparatus for dental plates is described which comprises a series of blades for the anchoring to the osseous tissue of the gums. The upper portion of each anchoring blade is formed by a projecting threaded pin of small diameter, provided with a movable or fixed cap or bush and with an internally threaded hollow element adapted to be screwed onto the pin. A ferula is provided with through holes, for insertion of the pins. The anchoring blades are fixed to the ferula by means of threaded hollow elements or knurled nuts which are screwed to the pin. The threaded hollow element may be a frustum conical cap, with the end zone flap-enlarged and having the same diameter as the cap or bush.

Abstract: Implants for bones, joints or tooth roots having sufficient mechanical strength, excellent compatibility with living tissues and other advantageous properties can be obtained by thermally spraying a mixture of ceramics and hydroxyapatite onto a shaped core which is made of ceramics, thereby forming a coating layer of the mixture around the surface of the core.

Abstract: An angulation head for removable attachment to a dental implant of a type having a hollow interiorly threaded neck integrally attached to an implant portion comprises a stem at least a portion of which is exteriorly threaded and adapted to be screwed into the hollow neck, an integral cap, or flange to set on top of the neck and a bendable upstanding head portion which is adaptable to be bent angularly with respect to the cap and stem by use of a manual bending tool. The bending tool comprises a hand held elongated holder for the angulation head and an elongated bending shaft for bending the head portion. The hand held holder includes an elongated handle having at one end a flat surface normal to the axis of the handle and an axial socket extending inwardly from said flat end for receiving the stem of the angulation head with the cap seated on the flat end, the socket having interior threads for engaging the threaded portion of the stem.

Abstract: An endosseal implant for the support of an artificial tooth consists of a U-shaped surgical metal wire having a flattened and sharpened bight portion adapted to be hammered into the spongy bone structure forming the alveolar crest. The wire arms of the implant protruding into the oral cavity are shortened, if necessary, and form into occlusion with the opposing teeth and an artificial tooth or teeth are attached to the arms by conventional techniques.

Abstract: A rigid bar arranged to removably support an artificial denture is curved in the shape of the lower jaw bone and has front implant support means as well as rear ramus implant portions. Each of the ramus implant portions includes a tip end of the frame arranged to be inserted in a rearwardly extending opening cut in the jaw bone by the dentist. Such tip ends have laterally extending flattened portions which provide increased bearing support on the jaw bone. The front implant support comprises a depending extension arranged to be inserted in a recess cut in the top surface of the jaw bone, and such extension has a cross blade with one or more forwardly extending tabs arranged to seat on surface portions of the jaw bone. The cross blade may also have rearwardly extending tabs arranged also to seat on surface portions of the jaw bone.

Abstract: A suitable dental implant which I term a submerged dental implant and which may be of either the post or blade type, but preferably the latter is provided with a relatively short, hollow, threaded neck or collar portion to which a thin temporary cap may be detachably applied.The implant including the neck with the cap applied, is then inserted in a cavity formed in the jawbone of the patient to a depth where the implant is entirely submerged. Thereafter, the mucosa (gum) is laid over the cavity completely covering the implant and a suture is applied. After a suitable period of time which may be in the order of several weeks or even months, as determined by tests by the doctor or surgeon in charge, the covering skin is removed from the cavity and the temporary cap is replaced by a tooth-receiving head member, a portion of which projects above the surface of the gum. An artificial tooth or other dental device is then applied to the head member.

Abstract: A milling device for cutting a circular arcuate slot in a human jawbone, which slot is adapted to receive an endossal implant for mounting a denture. The device has a circular sawblade mounted in a housing comprising two parts. One part is adapted to slide into the other and carries the rotatably mounted sawblade. The other part serves as a guide to control the direction and distance the blade moves with respect to the bone being cut, thereby providing an accurately dimensioned slot for receiving the implant.

Abstract: A dental implant for anchoring attachments to the jawbone including an endosseous blade-like base embedded entirely within the bone tissue of the mandibular or maxillary ridge. A juxtaosseous support abutment is connected to the base by a shank having a neck portion spaced from the base and confined to the gingival. The base is received within a trough surgically cut into the jawbone and stabilized therein by cross-sectionally rounded enlargements of edge portions extending in mesial-distal directions relative to the shank.

Abstract: An electroconductive dental implant is permanently imbedded in the jawbone of the subject, with a portion thereof extending into the oral cavity which is connected to a current source to act as a cathode. A second electroconductive electrode is non-permanently affixed to the skin of the subject, preferably at the ear, and connected to the source to act as an anode. The direct current applied to the implant and the electrode is preferably regulated so as to maintain a substantially constant current level throughout the application thereof. A continuous current, preferably of 200 microamperes or less is applied intermittently for relatively short periods not exceeding approximately one hour in duration. In this manner, osteogenic activity in the bone structure adjacent to the contours of the dental implant is stimulated in order to increase the rate of the normal healing process.