Abstract: A subperiosteal bone anchor has a base that is thin and moldable so the base can be conformed to bone where it is to be placed. The base is formed as a plurality of arms, and leaves with central holes in the leaves so screws can urge the leaves against the bone. The edges of the base are scalloped, and very thin to facilitate bone overgrowth. Central to the arms is a stem extending up, and having a variety of connection mechanisms for attachment of orthodontic appliances.

Abstract: An implant body has a non-round cross sectional shape, for example, ovoidal or rectangular. Lateral surfaces of the implant include threaded portions of a circular cylinder such that the implant, although non-round in cross section, can threadably engage a tapped circular opening in the jawbone leaving lateral spaces. Bone grows into the spaces between implant and the jawbone socket. The implant is shaped similarly to the root structure of a natural tooth and can be oriented, about its longitudinal axis, at any angle relative to the general curvature of the jawbone where the implant is seated. A more natural appearance of the mouth is achieved; prosthetic teeth may be positioned closer together without loss of strength between the implant and the jawbone. A non-round cross section of an implant opening receives an abutment post of corresponding cross section to prevent rotation of the abutment relative to the implant. A cemented connection prevents axial displacement between the abutment and implant.

Abstract: Prosthetic apparatus for promoting and supporting guided bone tissue regeneration in at least missing or excised portions of the human mandible or maxilla and in bony defects of the mandible and maxilla. The apparatus includes a bone attachment tray formed of tissue-biocompatible titanium sheet material having perforations therethrough for receiving bone screws to affix the tray to stump portions and ridge sections of the mandible or maxilla proximate the missing or excised stump portions or ridge sections and one or more tissue-biocompatible metallic dental tooth root replacement implants which are releasably affixed at one end to the inner surface of the tray and which depend from the tray into the missing or excised portions or bone defects of the mandible or maxilla for incorporation and support in bone tissue regenerated within the tray.

Abstract: An anchor for a dental implant, having a compact cavity for receiving the post of a post and core, and a tapered threaded end having tapered, self-tapping threads. The cavity is configured to have flat walls forming a hexagonal or other polygonal interior surface. This interior surface also has screw threads superimposed on the polygonal surface. The anchor is thus of reduced axial length than prior art anchors having threads and polygonal surfaces not superimposed. The tapered threads formed on the tapered threaded end engage different areas of bone tissue. Since bone tissue may not be homogeneously strong and resilient, this arrangement helps assure that some threads will engage strong, resilient bone tissue. This threading preferably comprises buttress type threads. A pitched relief groove extends across all convolutions of the external, self-tapping threads formed on the tapered end. These self-tapping threads are buttress threads.

Abstract: In today's dentistry, alternative approaches to the problem of mandibular reconstruction are important in restoring the mandible, which may have been lost through tumor resections, bone defects, pseudoarthosis or osteomyelitis.Also for use in those situations in which the condyle or condylar process must be rebuilt or replaced, where portions of the condylar process such as the head, neck, and pterygoid fovea may have deteriorated through disease or from accidental injury. A condylar process arm may be fabricated as a substitute bearing surface for the defective natural condylar process.

Abstract: An apparatus and method by which a sinus lift operation can be continued even when there is a tear in the Schneiderian membrane covering the floor of the sinus cavity. A channel is created through the maxillary bone of a patient in an edentulous region where a dental implant is to be installed. A balloon is then inserted into the channel such that its closed end extends into the sinus cavity then its open end or lips are adjacent the open end of the channel at the surface of the dental crest. The lips are then fasten to the dental crest, for example, by adhesive. Bone chips and bone fragments are inserted into the balloon such that a lower portion of the sinus cavity is filled with the balloon portion that contains bone chips. Bone chips continue to be inserted into the balloon until the channel leading to the dental crest is completely filled with the bone chips. At this point, the crest is closed and time is allowed to pass so that the bone fragment can fuse with each other and with the surrounding bone.

Abstract: A dental implant, placed into a socket formed in the jaw bone, is held in position by screws that pass through the jaw bone from the buccal cortical surface to the lingual cortical surface, and through the implant that is located between the cortical surfaces. Threads on the screw shank form and engage threads in the cortex on opposite sides of the jaw bone. The implant, when inserted in the socket and anchored by the screws, is immediately strongly held to the jaw's bony structure. Stresses applied to a prosthetic device, e.g., a tooth crown that is attached to the implant, are substantially borne by the cortex by way of the screws.

Abstract: A stress stabilizer for a dental implant is formed by an inverted substantially U-shaped saddle for straddling an intermediate portion of an alveolar ridge of a mandible in contiguous contact with cortical bone. The bight portion of the U-shape is bored and counterbored from respective ends of the bore for alignedly guiding prosthesis components secured together through the saddle bore by a pin.

Abstract: A dental ramus implant consisting of a clamping device which can be used with little or no bone surgery in both a unilateral or bilateral fashion to secure either a fixed or removable prosthesis. The ramus clamp is semi-adjustable and attaches to an intermediate member or meso structure supported by two anterior endosseous fixtures. The overlying teeth are secured by conventional prosthodontic means.A method of designing this implant for several types of applications and a surgical method of use are outlined.

Abstract: In an implant constructed of a blade form body (2) to be implanted within an alveolar bone (10) and a head (3), the body is constructed in a bending form like saw teeth in its sectional area in a whole length direction. In the upper portion of the body, sharp portions of the saw teeth which is a positioning range of the implant in the compact bone portion (10a) of the alveolar bone (10) at the time of the implantation, are projected in a taper form so as to gradually increase the height upward.

Abstract: A dental implant comprises an insert member received into the jaw and an implant head connected thereto. The insert member has a straight part, the end of which is flush with the surface of the jaw when the member is inserted into the jaw. The implant head is detachably connected to the insert member and a dental prosthesis is mounted thereon. The insert member and the implant head are innerconnected by a ball joint permitting angular orientation of the implant head relative to the insert member. A bendable connector element connects the implant head to the insert member by extending through cavities located therein, the connector element being bendable, in the vicinity of the center of the ball joint.

Abstract: An oral implant for supporting an artificial tooth structure has an implant portion adapted to be fitted in an opening in a bone in the vicinity of the occlusal plane of a patient in such a manner that at least a part of the connection part extends beyond a rim of the opening in the bone or can remain just below the bone while the base of the post rests on the bone. There is at least one post portion having first and second ends. The first end is adapted to receive at least a part of the artificial tooth structure. The second end is adapted for a direct connection to the connection part of the implant portion. The past may be connected to the implant portion by an arrangement in which the implant portion has an opening along the upper surface. Ridges are provided along the sides of the opening and a center projection extends up from the base of the opening. The post portion has complementary channels and openings for receiving the ridges and projection.

Abstract: A composite implant member to be embedded both in a soft tissue and in a hard tissue comprising a ceramic soft tissue contact portion adapted to come in contact as with the skin and muscle and a metallic hard tissue contact portion adapted to come in contact as with the bone and osteoid tissue.

Abstract: A dental implant assembly for mounting a tooth replacement into a patient's jawbone, which includes a body member, a pair of wing or blade-shaped members movably coupled to the body member for movement from a retracted position to an extended position, and an implant head releasably coupled to the body member. The blade-shaped members have a cutting edge for cutting into the patient's jawbone to anchor the body member to resist both lateral and rotational movements caused by the patient chewing or grinding his or her teeth. The dental implant assembly may optionally include an extension member, a collar member, or both.

Abstract: A device for use in attaching artificial teeth to the bone which supports the natural teeth. The device may have an anchoring member comprising a tooth support receiving member, at least one arm extending laterally from the member, means for coupling the arm with the bone and a spike adapted to be lodged into the bone and extending outwardly from the receiving member. In addition to an anchoring member, the device may comprise a tooth support adapted to be removably positioned upon the anchoring member and designed to allow for limited movement of the artificial teeth.

Abstract: An elongated flat body member has an implant end arranged to be embedded in the jaw bone and a post end arranged to project out of the jaw bone for support of a tooth crown. The post end of the body member has a lateral projection which serves as an abutment locator for a permanent crown mounted on the post end. The post end of the body member has a highly polished smooth surface area which forms a re-contouring portion for gum tissue as it heals around the body member. The implant end has a tapered shoulder and the polished area has tapered portions leading into these tapered shoulder portions of the implant end.

Abstract: An oral implant for supporting an artificial tooth structure has a generally triangularly shaped implant portion adapted to be fitted in an opening in a bone in the vicinity of the occlusal plane of a patient in such a manner that at least a part of the connection part extends beyond a rim of the opening in the bone or can remain just below the bone while the base of the post rests on the bone. There is at least one post portion having first and second ends. The first end is adapted to receive at least a part of the artificial tooth structure. The second end is adapted for a direct connection to the connection part of the implant portion. The implant portion has mesial and distal occlusional struts extending from the sides of the implant portion. The struts are directed toward a plane perpendicular to the apex of the triangle and end in the bucco-lingual cortice of bone.

Abstract: An oral implant for supporting an artificial tooth structure has an implant portion with a connection part in which a lateral dimension is as wide as the lateral dimension of the rest of the implant portion. The implant portion is adapted to be fitted in an opening in a bone in the vicinity of the occlusal plane of a patient in such a manner that at least a part of the connection part extends beyond a rim of the openings in the bone or can remain just below the bone while the base of the post rests on the bone. There is at least one post portion having first and second ends. The first end is adapted to receive at least a part of the artificial tooth structure. The second end is adapted for a direct connection to the connection part of the implant portion. The post portion has lateral dimensions such that a part of the second end extends from sides of the connection part and defines shoulders for supporting the artificial tooth structure.

Abstract: An oral implant for supporting an artificial tooth structure has an implant portion adapted to be fitted in an opening in a bone of a patient in the vicinity of the occlusal plane. At least one post portion having first and second ends is provided for attachment to the implant portion. The first end of the post is adapted to receive at least a part of the artifical tooth structure. The second end is adapted for a direct connection to a connection part of the implant portion. The post portion has lateral dimensions which are at least substantially as wide as the upper surface of the implant portion.

Abstract: A juxtaosseous dental implant for application to the mandible or maxilla has a trucated conical post projecting upward from a spider-like base having a central hub portion placed in shielding position over the center of the implantation site and at least three spoke-like branches screwed into the bone at points removed from the site center, thereby providing energy dissipating, multi-directional, three point attachment.

Abstract: A dental implant comprises a Y-shaped body including three planar legs which have respective openings defined centrally in sides thereof and extend radially as viewed from above, and a head supported on the body and adapted to be capped by an artificial tooth. The three legs which extend radially outwardly allow the body to be firmly anchored in an alveolar bone of the patient. After the body has been embedded in a groove defined in the alveolar bone, the alveolar bone grows and is joined together through the openings in the legs. As a result, the embedded body becomes more and more secure with time.

Abstract: A dental implant is specifically designed to properly distribute the forces exerted on the bone by the implant and to foster optimum osteal and/or fibro-osteal integration of the implant with the bone, thereby to improve the quality and longevity of proper implant function. The shaping and location of various surfaces of the implant are specifically designed to minimize both under- and over-stressing of the bone which leads to failure, and to maximize the formation and advantageous functioning of a peri-implant ligament, direct bone apposition, or combinations thereof. Novel structure may be provided so that heads of different shapes and inclinations can be selectively used with the implant to meet the patient's individual physiologic requirements, while at the same time facilitating submerged healing.

Abstract: An endosseous implant including at least an embedding portion to be embedded in a living tissue, the embedding portion comprising any of a platelike body itself and a desired shape of body obtained by working the platelike body, the platelike body having orderly or disorderly a plurality of substantially straight tubular channels passing through the thickness of the platelike body for permitting the ingrowth and penetration of the adjacent bone tissue therein, the tubular channels including at least two kinds of three different pore diameters of large, medium, and small pore diameters respectively for permitting the ingrowth and penetration of a bone tissue, osteoid tissue, and fibrous tissue, whereby a polycapillary structure is built by the ingrowth and penetration of the at least two of the three kinds of tissues which pass through the thickness of the platelike body after the implantation.

Abstract: An adjustable oral implant is constructed of a base or implant portion adapted to be attached to the bone of a patient's mouth and a projecting support portion attached to the implant portion by an adjustable swivel-type connection which permits the support portion to be set at any of a variety of angular positions relative to the implant portion.

Abstract: An endosseous implant having a mesh pore structure including at least an embedding portion to be embedded in a living bone tissue, the embedding portion being a single sheet of a platelike body or a desired shape of body obtained by working the platelike body. The platelike body can be a single metal mesh sheet or a laminate of a plurality of metal mesh sheets formed into one body by mechanical bonding or by sintering, the laminate having a multiplicity of mesh pores passing through the embedding portion, whereby the embedding portion provides a mesh pore structure adapted to permit into the mesh pores the ingrowth and penetration of a fibrous tissue along out of three kinds of bone, osteoid, and fibrous tissues or not less than two tissues inclusive of the fibrous tissue.

Abstract: A prosthetic dental device, adapted for percutaneous implantation, consists of a metal core that is directly coated with a first layer of polymer, and is overcoated with a second polymeric layer in which fibrils of a biopolymer are embedded and secured. The fibril nap provides a framework for the growth and attachment of regenerating recipient connective tissue, and also serves as a barrier against epithelial invasion, which would otherwise tend to cause implant rejection.

Abstract: A dental implant includes a wavy or tortuous body. The body with a tortuous cross section has ridges extending from an upper end to a lower end. The dental implant also has a head supported on the upper end of the body and adapted to fit into an artificial tooth.

Abstract: A dental implant is a submerged endosseous implant system and a blade implant is an integral one-piece body member having a blade-like portion, a collar support portion, and one or more cylindrical tubular collars, with each cylindrical collar having an internal screw-threaded bore. After the blade body member is positioned in the groove in the patient's jaw a short flat healing plug is screwed into the collar bore and the gum sutured and allowed to heal. After healing, the flat-headed plug is removed and an abutment head is screwed into the collar bore, the head including an externally threaded shaft portion and a head portion having a groove. The top head portion may be bent at the groove to obtain the desired head angle. The same type of abutment head is used with a submerged screw implant.

Abstract: A prosthetic dental implant (10) comprises a body (26) having a depression (12) in the upper portion thereof, en enlarged space (16) beneath the depression (12), at least one additional opening (14) therein, and a neck (18) joined to the body (26) substantially at the nadir (30) of the depression (12). A prosthetic dental implant (10) having entirely rounded surfaces beneath the gum line is also disclosed.

Abstract: A screw element is brought in thread engagement with a blade-shaped piece having a first threaded hole and open at sides, and the piece and the screw element are implanted together in a jawbone. A newly grown jawbone goes into osteobond with the implanted piece and screw element, the jawbone thus defining a second threaded hole. Subsequently the screw element is removed, and a pin neck portion is threadedly fitted into position in place of the screw element. The piece is small in size and open at sides. Therefore, it has no unfavorable effect on adjacent teeth and can be steadily implanted in a narrow jawbone structure. The pin neck portion is securely fixed by both the first threaded hole of the piece and the bone-defined second threaded hole, being thus steadily implanted in position.

Abstract: A U-shaped bar is arranged for connection of an artificial denture thereto and includes segments arranged to be implanted in the upper jaw bone and in the zygomatic bone. The bar and implant segments are formed of a sturdy but bendable material capable of shaping at the time of installation. The segments to be implanted in the jaw bone comprise front and rear segments with non-implant areas therebetween to avoid sinus cavities.

Abstract: Apparatus includes a mandible alignment device and a jaw pattern jig to prepare a one-piece metal dental implant for insertion into a patient's mouth. The alignment device has a central scissors member with a rear positioned thumb wheel controlling the longitudinal spread of the scissors blades. A front portion of a longitudinal angle adjustment member mounted over the scissors holds an anterior foot portion of a dental implant. A rod integral with the end of each scissors blade supports a housing holding a ramus member portion of a dental implant. After a pattern is determined by the alignment device, it is locked into the jaw pattern jig and the one-piece metal dental implant is bent to shape to substitute for the anterior foot and ramus members removed from the alignment device.

Abstract: A subperiosteal implant has a prefabricated elongated plate of pliable, work-hardenable material. A short projection extends from one surface of the plate and defines an aperture which receives a post for supporting an artificial tooth structure. The prefabricated implant is inserted through a lateral incision in the gum tissue, and is then molded to the bone. Subsequently the incision is sutured and the post is installed on the support plate.

Abstract: A dental prostheses and method of mounting same comprises an implant having an upper neck portion, and a ferromagnetic casted coping comprising a precious metal alloy. A barrier cement layer between the coping and the neck for connecting same and a prosthetic member. A rare earth magnet is fixedly mounted in the prosthetic member at the gum facing side thereof and is coactive with the coping for retaining the prosthetic member in place. The coping is disposed at the crestal gum tissue level at the time of implantation.

Abstract: An oral implant, and method of using it, allow for the permanent installation of an artificial tooth in an area of the maxilla adjacent a descendent portion of the maxillary sinus. An opening is made in the maxilla to the Schneiderian membrane at the floor of the sinus. The implant has a basket or cradle which is filled with bone chips and inserted into the opening. A base attached to the cradle by an adjusting shaft is positioned in the opening after the cradle, e.g., in grooves at anterior and posterior portions of the opening. The shaft is then used to set the spacing between the cradle and the base such that the Schneiderian membrane is lifted and the sinus is reduced. After a period of time, new bone grows into the groove and about the bone chips so as to fuse the implant in place and thicken the maxilla in that area. Then a post is fastened to the implant and is used to support an artificial tooth structure.

Abstract: An oral implant for supporting an artificial tooth structure includes an implant portion that has a transverse slit at an obtuse angle to the side wall such that two facing surfaces are created. By squeezing the surfaces toward each other, the surfaces make contact and slide along each other so as to laterally separate the two parts of the implant portion. This causes the implant portion to become tightly wedged in a groove in a patient's bone along the occlusal plane. Additionally, the implant includes a neck portion with a rotatable threaded collar that couples to threads on a cap to which the artificial tooth structure is secured. As a result, the tooth structure can be removed without damage to it or to the implant.

Abstract: Oral implants for original entry and re-entry procedures have implant portions that are positioned in grooves in the bone such that they are submergible below the upper rim of the bone. A post assembly for immediate installation of an artificial tooth structure may be detachably corrected to the implant portion. Alternatively, a cap may be attached and covered by tissue. Once the bone has grown over the implant portion, except in the area of the cap, the tissue is reopened and the cap is replaced by the post. In narrow bone areas the implant portion is a blade with a snap-on cap. In broad bone areas, the implant portion is box shaped and has a screw on post. If desired, the artificial tooth structure may be detachably connected to the post assembly for easy removal.

Abstract: The invention relates to a device, metallic or of other biologically acceptable material, which is surgically inserted in the jaw bones for the purpose of artificially supporting and anchoring a fixed oral prosthetic member.The device consists of a substantially triangular plate with a plurality of holes and notches on the surface contacting the surrounding bone. The plate has a vertical pin integrally attached to a small shoulder and serving to fix a stump that protrudes into the oral cavity and to anchor the prosthetic member in place.

Abstract: Implants made of corrosion resistant metals such as titanium, tantalum or niobium, wherein the parts to be inserted into the jaw bone have an essentially leaf-shaped form, and the parts projecting from the jaw bone right through into the mouth cavity being a crown, bridge or some other superstructure, have the problem that such implants have frequently been surrounded by a soft tissue fringe as a result of which the implants are merely loosely anchored in the jaw bone. This also causes an irritation of mucous membrane in the region of the implant part extending through the mucous membrane, as a result of which the implant's bacteria-tight closure is no longer present in many instances. There is an annular groove on the outside of the ring. In order to hold the implant during the healing-in phase with a certainty of freedom from any load, the elements of the superstructure are attached to the post penetrating the mucous membrane by means of a blind hole.

Abstract: A tool with a gripping handle and a forwardly extending shank on the handle having a cross sectional dimension of height and thickness capable of being received in a primary recess in the ramus portion of a mandible. A reduced thickness extension is provided on the forward end of the shank which is arranged to form a reduced width secondary recess by manually forcing the extension into the bone area at an end of the primary recess. The shank has an upwardly angled forward portion and the handle has a rearward angled end forming a lateral gripping area for the tool. The free end of the extension is rounded and sharpened for piercing bone.

Abstract: A one-piece U-shaped bar is arranged to support an artificial denture on its upper edge and terminates at the rearward end in ramus implants. Each of the ramus implants comprises a rear extension of side portions of the bar, and these extensions are of reduced thickness than other portions of the bar for fitting between narrowed side defining bone areas of ramus portions of the jaw. Rear extensions of the bar are offset laterally for proper fitting in the ramus portions of the jaw. The rear extensions have apertures therethrough with funnel shaped openings at the sides for providing a locking connection of bone growing through the openings.

Abstract: An improved bone implant for securing artificial teeth to a jaw bone. The implant includes a body plate having an outer end and an inner end and two broadsides, each of which is formed with transversely spaced apart elongated depressions which are transverse to the direction from the outer end to the inner end. Each of the depressions is free from undercut surfaces, and has a longitudinal center plane and is symmetrical with respect to the longitudinal center plane. The depressions may consist of grooves having a semicircular cross-section. The body plate is enlarged in thickness in the shape of a bead at its inner end, in order to promote the application of pressure by the inner end of the body plate to the surrounding body tissue.

Abstract: A one-piece U-shaped bar is arranged to support an artificial denture on its upper edge. The front of the bar is curved and the side portions thereof are substantially straight whereby to be of a contour similar to the contour of the lower jaw of a person. The bar has rear ramus implant portions as well as a front implant portion. Each of the ramus implant portions extends upwardly at an angle greater than a right angle but less than 180.degree. relative to the bar and also comprises an extention of the sides of the bar. Except for a small outward bend of the bar at the sides immediately forward of the ramus implant portions, the latter are substantially in longitudinal alignment with such sides. The ramus implant portions project upwardly as well as downwardly relative to the bar, with the upwardly extending portion having a length substantially greater than the downwardly extending portion. These upwardly and downwardly extending portions are pointed at their ends.

Abstract: A dental implant is disclosed for rigidly anchoring a prosthesis to a jawbone implant site. The first embodiment of the dental implant comprises a center post having a boss connected to the proximal end thereof. A plurality of fins extend radially outward along the center post along the entire longitudinal length thereof. The boss includes a counterbore and a threaded hole for receiving a support cone having a threaded stud extending therefrom. Alternatively, the boss defines a socket for the reception of a correspondingly shaped plug disposed on the support cone. The base has disposed thereon a circumferential sleeve of ceramic material. The second embodiment of the dental implant comprises a major post having a plurality of elongated fins extending radially outward from both sides of the major post. The proximal end of the major post includes a similar counterbore and a threaded hole for receiving the stud of the support cone.

Abstract: A dental implant device. A dental implant device having: (a) a root structure made of a biocompatible, mechanically suitable prosthetic material; (b) a cervical segment projecting above the root structure, made of a biocompatible, nonporous material and having smooth surfaces and together with the root structure forming a member; and (c) a gingival interface made of expanded polytetrafluoroethylene having a porous structure for the ingrowth of connective tissue, located adjacent to the juncture of the root structure and the cervical segment attached to the member and forming a border around the apical end of the cervical segment. The expanded polytetrafluoroethylene provides for an interlocking between the gingival tissue and the pergingival portion of the dental implant preventing bacterial penetration and infection where the implant extends into the oral cavity.

Abstract: An oral implant for supporting an artificial tooth structure includes an implant portion which is buried in the bone of the patient along the occlusal plane. A neck portion extends from the side of the implant portion remote from the groove and receives a post portion on which the artificial tooth structure is cemented. Means are provided on the neck portion so as to cause it to become wedged within a cavity of the overlying post portion, thereby releasably locking the post to the neck portion. As a result of this arrangement, a bridge structure can be removed from an implant without having to destroy the bridge.

Abstract: A modular implant assembly utilizes standardized components removeably attachable to a base module. The module is anchored to the bone tissue and provided with a matrix of apertures and a series of sockets for threadably receiving the interchangeable components including a support post for an artificial tooth structure, a threaded pin for stabilizing the module within the bone tissue and other stock parts. The apertures and sockets are randomly accessable by the components which are externally insertable through the bone tissue. The components are further divisible into constituent elements and can be constructed in various combinations for attachment to the module. In a variant embodiment the module defines a cylindrical surface. A transverse cross bar extending diametrically over the cylindrical opening includes an aperture for accepting a vertical support post. In addition, the apertures within the cylindrical side surface will accommodate an anchor pin for preventing dislodgement.

Abstract: An oral implant allows for the immediate installation of an artificial tooth support structure in a jawbone portion which has become oversized due to a failed prior blade implant or an enlarged tooth socket. The implant includes one or more posts upon which the artificial tooth is mounted, as well as a support structure whose lateral dimensions is sufficient to permit it to be wedged in the oversized opening. Preferably, the lateral dimension is adjustable to various size openings in the jawbone.

Abstract: The invention provides a implants made of metal for the purpose of anchoring superstructures consisting of one or more crowns or parts of crowns, also made of metal, arranged in the form of bridges. In general, various metals are used for the implant and the individual parts of the superstructure. In most of the implant systems presently in use, these different metal parts are in direct, electrically conductive contact. Consequently, the possibility of the formation of galvanic cells results. The electrical voltages coming into being as a result of such can lead to the flowing of electric currents through the tissue and the body fluid that is present. Such electrical currents, in turn, can have an unfavorable influence on the tissue reactions at the point where the surface is in contact with the implant, and consequently can result in the premature loosening and loss of the implant.

Abstract: An endosseous implant structure for oral implantology, comprising a planar body portion embedded in an alveolar bone to form an artificial tooth root, at least one neck portion extending from one end of the planar body portion in a direction substantially parallel to the plane of the body portion, and at least on head portion extending from one end of the neck portion remote from the body portion and projecting into a oral cavity to form an abutment for an artificial tooth. The planar body portion includes a plurality of leg portions defined by cutouts formed in the body portion. At least the leg portions are made of a metal material exhibiting a thermal shape memory effect of deformation in response to variation in temperature thereof. The leg portions are deformed sidewise and away from the plane of the body portion upon temperature variation after insertion of the body portion into the alveolar bone.