Abstract: A multi-piece dental prosthesis system is provided. The system includes an implant which can be implanted into a bone of the patient, an abutment removably connected to the implant by a prosthetic screw, and a ti-base removably connected to the abutment. The system may be used to hold a crown, denture, or partial denture in place.

Abstract: In embodiments of a method for visually guided access cavity preparation, the method makes use of a 2D image of a phantom implant matching a desired access cavity path to a pulp chamber of a tooth anatomy, the phantom implant being non-tapered along its length and having a diameter no greater than 1.0 mm. The phantom implant is overlaid over a 2D or 3D image of the tooth anatomy and drilling of the access cavity path is monitored using a visual display that compares the drilled access cavity path to the desired access cavity path.

Abstract: The present invention discloses a metal-ceramic composite joint prosthesis and applications and a manufacturing method thereof. The joint prosthesis comprises a metal body and a ceramic body, wherein the metal body is integrally formed and comprises a porous structure layer, a boundary layer and a root-like layer, the boundary layer is located between the porous structure layer and the root-like layer, the root-like layer comprises a plurality of root-like filament clusters connected to the boundary layer but not in contact with one another, each root-like filament cluster comprises a main root perpendicularly connected to the boundary layer and a plurality of fibrous roots connected to the lateral side of the main root, the fibrous roots extend obliquely towards the side away from the boundary layer, and the ceramic body covers the root-like filament clusters and is formed on the boundary layer.

Abstract: A dental device and a method of use for associating with an implanted dental implant anchor immediately following implantation. The device provides for projecting the implant's location, orientation and axis such that the device is readily visible to the naked eye by way of visual inspection so as to reveal the location of the implanted dental implant anchor following a healing period. The device having a distal portion, for coupling to the dental implant, a medial portion, for covering the proximal end of the dental implant, and a proximal portion, defining a vertically adjustable shaft provided for projecting the location, orientation and axis of implant anchor.

Abstract: In embodiments of a method for visually guided access cavity preparation, the method makes use of a 2D image of a phantom implant matching a desired access cavity path to a pulp chamber of a tooth anatomy, the phantom implant being non-tapered along its length and having a diameter no greater than 1.0 mm. The phantom implant is overlaid over a 2D or 3D image of the tooth anatomy and drilling of the access cavity path is monitored using a visual display that compares the drilled access cavity path to the desired access cavity path.

Abstract: There is provided an endodontic apical plug including a wall, an open base and a closed tip, wherein the wall defines a longitudinal cavity extending from the open base of the plug to the closed tip of the plug. A width of the longitudinal cavity is greater at the open base of the plug and narrower towards the closed tip of the plug, the longitudinal cavity being configured to accept an injection tube connected to the injection device for filling the plug towards a root of a tooth. The longitudinal cavity comprises at least one lateral longitudinal opening in the wall of the plug, the at least one lateral opening being configured to, in use, enable a tooth filling material to pass through the at least one longitudinal opening and into a tooth.

Abstract: A core for obturating a root canal includes a body that has a pre-formed contour that closely matches a contour of the root canal. When the core is inserted in the root canal with or without sealer, there are essentially no voids in the root canal. A method of making a customized root canal obturation core includes generating a three-dimensional image of a root canal. The method also includes manufacturing the customized root canal obturation core based on the three-dimensional image of the root canal. The customized root canal obturation core has a preformed contour that closely matches a contour of the root canal such that when the core is inserted in the root canal with or without sealer there are essentially no voids in the root canal.

Abstract: A dental superstructure defines a channel formation for the fixing element of a dental superstructure. The superstructure (1) is fixed to an implantation (3) integrated in the jaw bone by means of a fixing element (2). A channel (7) is formed in the superstructure (1). The axis line (8) of the channel (7) is shaped to follow an arc (9) whose radii pointing to given points of the axis line (8) diverge from the plane of the arc (9) by 0-5°. The channel (7) is shaped in such a manner that the sections determined by the planes perpendicular to its axis line (8) are circles with the same diameter with their centers on the axis line (8). In the method according to the invention a computer controlled device is used for forming the channel.

Abstract: A method of preparing a dental prosthesis to be attached onto a dental implant. A replica including at least a segment of a customized abutment substitutes the customized abutment for supporting the dental prosthesis while it is being installed onto the physical model for its processing. An improved implant analog and the replica of the customized abutment are provided as well.

Abstract: The disclosure relates to dental prostheses assemblies. Specifically, the disclosure relates to retrievable detent-retained dental prostheses assemblies, kits and methods of their use in the restoration and rehabilitation.

Abstract: The invention discloses a novel implant provided with a macroporous surface on the top surface, and a method for the production of such a metallic and/or ceramic implant having a textured, particularly porous, surface for the at least partial insertion in hard tissue, such as in a bone, and/or into soft tissue. The implant is produced as a green compact, at least in sections, using a cold isostatic pressing, casting, and/or injecting (CIM, MIM) with subsequent sintering to obtain an implant, and is particularly characterized in that the surface is modified and/or prepared before sintering such that a macroporous surface is present after sintering without requiring any finishing.

Abstract: A dental post removal device having a hollow tubular structure having a sidewall and two open ends, and engaging features formed on the sidewall, and a fixing structure formed on the hollow tubular structure adapted for pulling the hollow tubular structure. The engaging features can be a series of openings formed through the sidewall of the hollow tubular structure, and/or the inner wall surfaces of the sidewall that at least one of is scored, textured, dimpled, and/or coated with a high adhesion material. The engaging features being adapted to improve adhesion to a composite resin, cement and/or adhesives to be placed in the hollow tubular structure.

Abstract: A dental core and post system for restoration of teeth includes a core device and a dental post formed as a rod-like member extending along a central vertical axis between a coronal end and an apical end. At least one portion of the rod-like member including the apical end is configured for fixation within a root canal of a tooth for restoration. The core device is attached to or is integral with the coronal end of the dental post. At least one of the core device and dental post include an inner, low-density volume configured to limit mechanical forces communicated through the core device and dental post coaxially with the central vertical post axis after fixation.

Abstract: A dental post consisting of fibre-reinforced material with substantially uniformly directed fibers and mountable in a tooth root canal for fixing a dental prosthetic structure on a tooth stump and a method for its fabrication. For improving the light conduction properties within the post, at least a fraction of said fibers are adapted for light conduction within said post and said post comprises a tapered portion extending towards its second end, wherein at least a fraction of said light conducting fibers extend from the first end of said post to the circumferential surface of said tapered portion. An advantageous fabrication method of the dental post comprises forming of a composite structure of uniform cross-section with substantially uniformly directed light conducting fibers in a pultrusion process and shaping of at least a portion of the circumferential surface of said composite structure in order to provide a tapered portion extending towards the second end of said composite structure.

Abstract: A method for manufacturing a one-piece dental implant. The method includes the steps, in any order, of manufacturing an outer body of metal having a cavity and manufacturing an inner body of plastic or composite material having an outer profile. The cavity has an inner profile, and the outer profile of the inner body is complementary to the inner profile of the cavity of the outer body. The inner body includes a core manufactured within the cavity of the outer body. The respective profiles are wavelike rounded in an axial direction of the dental implant and tapering from the crestal end of the outer body to the apical end of the outer body, such as to decrease tension between the inner and the outer bodies and/or such that to provide for an anti-rotation lock between the two bodies.

Abstract: The present application relates to a radicular pivot wherein the apical end of the pivot has a hemispheric end with a continuous variation in the curvature between the cylindro-conical part and the apical end. The invention also relates to a drill for the preparation of the radicular chamber intended to receive such a pivot, as well as the system composed of a pivot and the matching drill.

Abstract: A dental implantation system is for securing a dental prosthesis in a patient's jawbone including an alveolar bone, a basal bone adjacent the alveolar bone, and a neurovascular bundle running through the jawbone. The dental implantation system may include a dental implant fixture having an elongate shape and including an upper portion to be positioned in the alveolar bone to receive the dental prosthesis and defining a first axis. The dental implant fixture may also include a lower portion to be positioned in the basal bone and defining a second axis. The dental implant fixture may further include an intermediate offset-defining portion between the upper portion and the lower portion to define an offset between the first axis and the second axis so that the lower portion avoids the neurovascular bundle.

Abstract: An intra-radicular post is described for rebuilding of teeth, with treatment of passages, comprised of one apical portion, a body adjacent to the apical portion, and one head adjacent to the body; characterized because the body is frusto-conical and tapered in such a way that its diameter is greater at the side proximal to the head and lower at the side proximal to the apical portion; apical portion comprises cylindrical segments with a flat end; and the head portion comprises conical segments having at least one flat lateral face; the post having thus improved insertion and retention properties.

Abstract: Pre-surgical planning for cranial and facial reconstruction includes preparing a computer generated jaw or skull model for determining a locational position for a dental implant, a surgical bone implant to repair missing bone in the cranium, install ear prostheses, and/or install nose prostheses. The computer generated jaw or skull model is made from medical imagery and computer aided design. A surgical guide is prepared with oversize holes in registration with analogs for the dental or surgical bone implants to be inserted at the locational positions determined by a dentist or surgeon in the jaw or cranial skull model. The surgical guide is fitted atop each analog, and the surgical guide is bonded to the jaw or skull model at a predetermined angle of the analog in the jaw or skull. The surgical guide is removed from the model attached to the law or skull of a patient for accurate drilling during the dental or surgical procedure for insertion of the implants into the jaw or skull of the patient.

Abstract: A method for treating root canals includes directing an oxidizing gas onto an open root canal through a needle, maintain a presence of the oxidizing gas onto the root canal for a period of time sufficient to kill microorganisms therein, and preventing escape of the oxidizing gas from the root canal. Apparatus for a treatment of root canals includes a source of oxidizing gas, a handpiece, a needle extending from said handpiece and receivable in a tooth root canal. The needle includes an oxidizing gas delivery lumen therethrough, and a cup is attached to the handpiece and surrounding the needle.

Abstract: To accurately fix a dental prosthesis at a cavity or an abutment tooth, the dental prosthesis has a constitution in which a cement space C is kept on a whole face opposite to the cavity or the abutment tooth except a plurality of projection parts P contacted with the cavity or the abutment tooth and a portion near a margin line, and the dental prosthesis which is to be covered on the abutment tooth is designed by measuring a gypsum model produced based on an impression taken from an oral cavity of a patient so as to obtain three-dimensional measuring data, providing a plurality of projection parts P contacted with the abutment tooth and a portion near a margin line based on the obtained three-dimensional measuring data and setting a cement space C on a whole face opposite to the cavity or the abutment tooth except the contacting portion.

Abstract: A dental post and method for supporting a tooth replacement on a natural tooth root, has a shank with a first root engagement portion and a second tooth replacement support portion. A non-round flange is on the first portion but is adjacent the second portion. The non-round flange is received in a countersink at the opening of the root canal for precluding relative rotation between the post and the root. One or more flexible flanges extend from one or both of the shank portions and the entire post is made of plastic.

Abstract: A tooth restoration post having a central dowel and a plurality of filaments. During a tooth restoration procedure, the post can be inserted into a canal of the tooth. When inserted, the plurality of filaments can engage the walls of the canal to provide support for the restored tooth. A composite material can be used to further strengthen the support of the tooth.

Abstract: A dental post and method for supporting a tooth replacement on a natural tooth root, has a shank with a first root engagement portion and a second tooth replacement support portion. A non-round flange is on the first portion but is adjacent the second portion. The non-round flange is received in a non-round countersink at the opening of the root canal for precluding relative rotation between the post and the root. One or more flexible flanges extend from one or both of the shank portions and the entire post is made of plastic.

Abstract: A prosthesis mounting device and assembly for securing a prosthesis on an implant supported in bone tissue. A metallic appendage or “preppable abutment” is carried by a dental implant and is milled or “prepped” into a shape suitable to accept a dental prosthetic. A recess extends axially upwardly from an axial bottom end of the appendage and is shaped to fit over an O-ring receiver abutment or “O-ball” of a dental implant.

Abstract: A dental attachment assembly has an abutment member for attachment to a tooth root, implant, adjacent tooth, or bar, and a retention member for hinged engagement in a cap secured in a dental appliance. A skirt projects from one end of the cap for releasable snap engagement over an outer locating surface on the abutment member. The outer locating surface has at least two axially spaced retention surfaces for mating, snap engagement with corresponding spaced snap engagement formations on the inner surface of the cap, to provide a stacked, external retention between the abutment and retention members.

Abstract: A dental post and method for supporting a tooth replacement on a natural tooth root, has a shank with a first root engagement portion and a second tooth replacement support portion. A non-round flange is on the first portion but is adjacent the second portion. The non-round flange is received in a non-round countersink at the opening of the root canal for precluding relative rotation between the post and the root. One or more flexible flanges extend from one or both of the shank portions and the entire post is made of plastic.

Abstract: Dental material containing a polymerizable component and a component applied superficially to the polymerizable component, which can be removed after the curing of the polymerizable material with accompanying formation of a rough surface.

Abstract: A tooth restoration post having a central dowel and a plurality of filaments. During a tooth restoration procedure, the post can be inserted into a canal of the tooth. When inserted, the plurality of filaments can engage the walls of the canal to provide support for the restored tooth. A composite material can be used to further strengthen the support of the tooth.

Abstract: A chairside prosthesis includes modular components which may be assembled and adjusted to variable ridge sizes, and held together in position with self-curing hardened resin. Such modular components are secured in the bones of the mouth in a relatively short time, which may be adjusted at a later date, and which are adaptable to variations in size and shape of ridges in the bones for more comfortable use of the dentures secured on such prostheses.

Abstract: The present invention elated to a dental prosthetics and more particularly to an improved support post having a centrally convergent shank portion for securing a dental prosthesis, such as an artificial crown, to the root of a tooth. The invention further relates to a method and a device for strengthening a tooth and a root from which the nerve has been removed and specifically to a dental post which provides centering for the forming of a bracing filler to internally reinforce the walls of pulpless roots while providing for the support of an artificial prosthesis. The invention further provides for a secondary reinforcing device surrounding the central dental post and also being capable of following the contours of the tooth root. This secondary strengthening and reinforcing element is a flexibly coiled wire of a generally helicoid shape, which also serves as a matrix for the luting of composite filler.

Abstract: A series of dental implants is proposed, each of which is stepped, the drill diameter for the largest step section of the smaller implant corresponding to the drill diameter for the smaller stepped section of the subsequent larger implant. The invention also relates to a dental implant consisting of a stepped shaft section provided close to the superstructure end with an external engagement surface for fitting the superstructure thereover. A collar, joined to the shaft section, extends around the external engagement surface at some distance therefrom. The internal surface thereof is conically divergent with respect to the axis of the shaft section and part of the superstructure can be placed in a stable manner in the space delimited between the inner surface of the collar and the external engagement surface.

Abstract: A dental post comprising a rod fabricated of fiber-reinforced composite material. The rod comprises a plurality of frustoconical sections arranged coaxially along the longitudinal axis of the rod. Preferably the rod has consistent width along the longitudinal axis wherein the frustoconical sections each have the same tapered width and same length. The number of frustoconical units per rod can vary. The frustoconical sections may vary in shape. Moreover, the rod may include a channel therein extending along the longitudinal axis thereof. The rod may also include one or more grooves extending along the surface thereof.

Abstract: A dental prosthetic device and method of making and installing the device, the device being a nonmetallic dental post for tooth restoration, the post being fabricated in a mold from a fiber reinforced, ceramic polymer composite, the post having an anchor portion installed in a drilled and reamed post hole with an adhesive and a mounting head portion that is built up with a core material for bonding to a restoration, the post restorative having structural and composition characteristics similar to a natural tooth.

Abstract: Functionalized bicyclic (meth)acrylates with norbornenyl or norbornadienyl groups are described, which may be cured with radicals at room temperature and are particularly suitable as an adhesion-promoting component of dental adhesives.

Abstract: A two-component, dental post system uses two components to both improve the fit of the post to the tooth and increase retention of the post. This post system has a threaded inner post that is screwed into the apical portion of the canal and an outer sleeve that is screwed into the coronal portion of the canal with threads whose handedness is opposite to those on the inner post. When the two components are bonded together at the top by dental cement or resin, the opposing threads on the two components resist rotational forces in both directions and thus increase retention. In addition, this dental post system can be removed if necessary for further treatment of the tooth by shearing or cutting the cemented top portion of both components and then unscrewing the components one at a time.

Abstract: The problems of stability and life of dental restoration disposed in root canals are addressed by a support post for a coronal prosthesis having a ceramic layer of hydroxyapatite, or equivalent, sputter-deposited or plasma sprayed on to a metal support post pretreated with an oxide, by abrasion or by etching.

Abstract: A dental post is provided having an upper portion and a lower portion. The lower portion has cylindrical sections of differing diameters. Grooves formed on the section walls form cutting surfaces on the post and serve as vents for cement introduced into a canal of a tooth. The post functions both as a bur and as a dental post.

Abstract: A dental post having a top portion and a lower portion. The lower portion has cylindrical sections of differing diameters and extensions. Grooves formed on the section walls from extensions allow engagement of extensions in a canal wall. Cutting surfaces on the post prepare a canal and serve as vents for cement introduced into a canal of a tooth. The post functions both as a bur and as a dental post.

Abstract: A dental post having a top section and a lower section is provided wherein the lower section has a plurality of subsections. The subsections have a progressively reduced effective diameter in vertical direction away from the top section.

Abstract: An improved dental post having a radicular portion which is inserted and cemented into a root canal area of a tooth and also having a coronal portion which is used for attachment of a core to retain an artificial crown. The radicular portion includes a cervical flare shaped section, a central parallel circular shaped section and an apical tapered section. The cervical flare shaped section is adjacent the coronal portion. The radicular portion is provided with circumferentially extending grooves which communicate with longitudinally extending venting flutes. The venting flutes extend from the apical tapered section to the coronal portion. The coronal portion includes three cross shaped sections, each of which includes four protrusions extending from a central hub and forming valleys therebetween. The cross shaped section protrusions and valleys are longitudinally spaced apart and are radially aligned with one another.

Abstract: A method and system for inserting a dental post into a tooth root canal. The method comprises the steps of cutting out a post hole in the tooth and inserting a threaded tap into the post hole for creating at least one groove along the hole. Significantly, the tap includes at least one slot defined by a pair of flexible legs and running at least a portion of the length thereof for reducing stress along the post hole during threaded insertion. Also provided is a lentulo drill comprising a spiraled wire with a reverse spiral configuration at the apical end thereof for confining cement placement in the post hole prior to insertion of the dental post.

Abstract: A dental post having a support frame captured and interlocked thereon, and encaptured in a luting material, preferably such as a moldable self-curing tooth-colored composite material to create a laminated composite/metal foundation complex for retaining a dental rstoration securely on a tooth stub. The post includes a smooth cone-shape lower end portion for matchingly fitting into a prepared tooth canal, a threaded portion passively fitting in the tooth canal for engagement with the composite material, an unthreaded portion to provide greater strength, a square portion to permit the dental post to be unscrewed from the hardened composite material, a tapered portion, and a chisel-like portion at the upper end of the dental post.

Abstract: A dental post for securely retaining a dental restoration on a prepared tooth stub having a top surface and a bore extending therein. The dental post comprises a bulbous head and a shank. The shank is an elongated rod-like member having a first longitudinal axis, with the outside diameter of the shank measured along a second axis perpendicular to the first axis and being a predetermined dimension. The shank is arranged to be fixedly secured within the bore so that the bulbous head extends beyond the top surface of the prepared tooth stub. The bulbous head has an outside diameter measured along a third axis parallel to the second axis and is a predetermined dimension. The bulbous head has plural through passageways, e.g., a coronal passageway, and a transverse passageway that communicate with one another. The plural through passageways are for receipt of a setable securement medium which flows therein and about the surface of the head to secure the dental restoration to the post.

Abstract: A dental post is provided comprising a top section and a stem with a slot which extends lengthwise through the stem to form a plurality of legs. The legs have wings attached thereto which fit into indentations in a wall of a tooth bore. Kits are provided comprising the dental post and burs for forming a tooth bore to accommodate the dental post and optionally a core for supporting a tooth crown, a template for forming holes in a tooth stub and a key for providing support for the core.

Abstract: A method and system for preparing a cast post and core in a dental root canal procedure is provided. The method comprises the steps of removing the root canal material from the tooth; cutting out a post-hole in the tooth having a substantially uniform width; cutting out at least one annular tier along the hole; placing a burn-out post having at least one flange into the post-hole so that the flange is seated on the annular tier; applying an acrylic resin onto the tooth and over the burn-out post in order to form a core, and finally removing the core with the burn-out post from the tooth in order to form a casting.

Abstract: A dental post is provided comprising a bottom section and a stem with a slot which extends lengthwise through the stem to form a plurality of legs. The legs have wings attached thereto. The wings have cutting surfaces which are used to form indentations in a wall of a tooth bore. Kits are provided comprising the dental post and burs for forming a tooth bore to accomodate the dental post and optionally a core for supporting a tooth crown, a template for forming holes in a tooth and a key for providing support for the core.

Abstract: A crown-root reconstitution system and method of manufacturing a physiological dental securing peg in which a crown reconstituting material (3) is placed between a peg (1) and sound dentine walls (2a). The peg is formed of a composite material and includes high strength fibers (5) embedded parallel to one another, elongated in its axial direction, continuous from one end to the other end thereof. An epoxy resin matrix is formed, and a transverse modulus of elasticity of the order of magnitude of the average of that of the dentine in the amount of 18 GPa and a longitudinal compression-tensile strength and shear strength greater than corresponding average values for the dentine is provided by tensioning all of the fibers equally and pre-stressing all of the fibers in traction.

Abstract: There is provided a procedure to maintain an otherwise whole tooth, from which the nerve has been removed by carrying out a procedure which includes inserting a thin flexible post, preferably formed of a light-transmitting, physiologically inert material, to the full depth of a prepared relatively narrow tooth nerve canal, which has previously been sealed at its bottom with gutta percha. The post is permitted to abut against the gutta percha. The post is then surrounded by a film of a composite-filler or sealant, which is preferably light-curable, coating the post while supporting and sealing the walls of the canal. The post is sufficiently flexible as to be able to follow the curvature of the canal, which may retain a slight natural curvature. The composite filler or sealant is then cured, preferably by an optical radiation carried through the preferably transparent post. In one embodiment the light-curing post is removable after the sealant has been at least partially cured.

Abstract: A dental post is provided comprising a bottom section with cutting projections and a stem section. The cutting projections cut paths into the root canal walls to provide retention and anti rotation. A disk may be included which has projections on the bottom which cut pathways into the top of the root for optimal post support and root fracture resistance.