Abstract: An implant device has an exterior portion forming an exterior surface of the implant. The exterior portion is made of a porous material defining passages through the exterior portion. An inner portion has an outer surface with a treated area that is accessible from the exterior surface through the passages. The treated area has a treatment for direct attachment to bone or soft tissue.

Abstract: The present invention provides a functionally graded glass/ceramic/glass sandwich system especially useful in damage resistant, ceramic dental and orthopedic prosthesis. The functionally graded glass/substrate/glass composite structure comprises an outer (aesthetic) residual glass layer, a graded glass-ceramic layer, and a dense interior ceramic. The functionally graded glass/substrate/glass composite structure may further comprise a veneer on an exterior surface. The present invention also provides a method for preparing a functionally graded glass/ceramic/glass sandwich system. A powdered glass-ceramic composition or a glass tape is applied to the accessible surfaces of a dense alumina substrate to thereby substantially cover the substrate surfaces. The glass of the composition has a CTE similar to that of the substrate material. The glass-ceramic composition is infiltrated into the dense substrate by heating the assembly to temperatures 50-700° C. below the sintering temperature of the substrate.

Abstract: A method of designing a dental-implant prosthesis includes the steps of arranging a referential jig and combining the referential jig into a fixture installed in a patient's oral cavity, the referential jig having at least one feature point, the fixture having a connection interface, the referential jig having an opposite-joint interface; scanning the patient's oral cavity to acquire an oral digital data and a referential-jig digital data having at least one feature-point digital data; selecting one digital dental-implant prosthesis from a prosthetic database in a computer, a digital positioning jig overlapping the digital dental-implant prosthesis for combination with the connection interface, and proceeding with overlapping and localization of the digital positioning jig and the referential jig digital data to combine the referential jig digital data into the connection interface; and adjusting the position, size, and angle of the digital dental-implant prosthesis to acquire the digital dental-implant prost

Abstract: A method of preparing a digital model and an artificial tooth applied to dental implant includes the steps of a) combining a jig into a fixture in a patient's oral cavity and scanning the patient's oral cavity by an oral scanner to acquire a first oral digital data and saving it in a computer; b) operating the computer to select one of digital prostheses from a prosthetic database in the computer, arranging a digital positioning jig to correspond to the jig in the first oral digital data, and then combining the selected digital prosthesis with the first oral digital data to generate a second oral data; c) generating a digital oral model based on the second oral digital data; and d) creating a solid oral model.

Abstract: A drill guide uses a hole in a layer to guide a drill along an axial trajectory while permitting off-axis excursions of the drill during use. A number of such drill guides at varying heights from a target surface may be used sequentially or concurrently to enforce the axial trajectory in three dimensions during a surgical operation. A drill guide may include a hole in a layer that establishes a single point along the axial trajectory, or the drill guide may include multiple layers in a single device to establish two or more points along the trajectory while allowing off-axis insertion of a drill into the guide. The drill guide may be cuttable to accommodate intraoperative changes to the axial trajectory. In embodiments, a window or the like may be provided to permit a surgeon to view drill depth, drill orientation, the surgical site and the like during a procedure.

Abstract: A metal implant, in particular a dental implant, with a hydrophilic surface for at least partial insertion into a bone, and a method for the production of said implant are described. A particularly advantageous hydrophilic surface for improved osteointegration properties is made available if it is briefly treated, at least in some areas, in a weakly alkaline solution. These excellent osteointegration properties can be achieved in a method in which, optionally after a preceding mechanical surface modification by material removal and/or chemical surface modification, at least the areas exposed of this surface exposed to bone and/or soft tissue are chemically modified in an alkaline solution.

Abstract: The invention provides methods of making provisional and long-term dental restorations, particularly dental veneers, implants, crowns and bridges. A shell or restoration form made of polymerizable material having good dimensional shape-stability in its uncured condition is used to make the dental restoration. A polymerizable material is introduced into the cavity of the shell form. The outer shell and injected polymerizable material are polymerized and bond together to form a hardened crown structure. In one embodiment, the restoration can be fabricated indirectly by a dental laboratory. In another version, a dental practitioner can make the restoration chairside for a patient in a dental office.

Abstract: A jig device holding a work piece is used with a milling machine that cuts from the work piece a prosthesis having a surface essentially free of defects. The jig device is inserted repeatedly into the machine in the same predetermined location, even upon inverting the jig device. This maintains the spatial relationship between the jig device and milling so, at start up, they are always in the same exact spatial relationship. The milling machine partially cuts through a first side of the work piece to form in the work piece a cavity having a surface part corresponding to at least a portion of the prosthesis being made. The jig device is then removed from the machine, inverted and reinserted into the machine at the same predetermined location. A support material is placed in the cavity prior to reinserting the jig device. Upon reinserting the jig device, the machine precisely cuts through an opposed side of the work piece to form within the work piece a prosthesis having a surface essentially free of defects.

Abstract: Various embodiments for a spacer element that may be used in a dental implant assembly are described. In one example, the spacer element has a single aperture therethrough. Further, the single aperture includes an implant screw access bore and an offset abutment screw bore, longitudinal axes of which intersect within the single aperture.

Abstract: Color measuring systems and methods such as for determining the color or other characteristics of teeth are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object/tooth being measured. Light from the perimeter fiber optics pass to a variety of filters. The system utilizes the perimeter receiver fiber optics to determine information regarding the height and angle of the probe with respect to the object/tooth being measured. Under processor control, the color measurement may be made at a predetermined height and angle. Various color spectral photometer arrangements are disclosed. Translucency, fluorescence and/or surface texture data also may be obtained. Audio feedback may be provided to guide operator use of the system. The probe may have a removable or shielded tip for contamination prevention. A method of producing dental prostheses based on measured data also is disclosed.

Abstract: The invention relates to a blank for producing a dental prosthesis (tooth crown) comprising a mechanically processable material block and a holder connected thereto for clamping in an automatic processing tool. Said block is provided with a sub-gingival anatomic implant connecting part which is protrusively arranged thereon and in which an implant fixture for fixing it to the implant head is formed. The holder is arranged on the surface of the block arrangement side and the implant fixture to a surface on the implant side, thereby making it possible to work the blank by means of a computer-controlled conventional tool.

Abstract: A grinding apparatus (100) includes: a rotating grinding tool (102) for grinding a workpiece (101) immersed in a cooling liquid (106); vibration generating mechanisms (107a) to (107f) for applying vibrations to the cooling liquid (106) and generating cavitation; and a controller (108) for causing the vibration generating mechanisms (107a) to (107f) to generate the cavitation when the rotating grinding tool (102) is operated. The controller (108) turns on/off the vibration generating mechanisms (107a) to (107f) and adjusts amplitudes of the vibrations of the cooling liquid (106) generated by the vibration generating mechanisms (107a) to (107f) depending on a region in the workpiece (101) to be machined and one out of a plurality of machining steps to be performed.

Abstract: A human body implant structure includes: a support anchor which is embedded into a bone body; a support base which is placed on and fixed to an upper portion of the support anchor; and a lost-part compensation part which is mounted on an upper portion of the support base, wherein the support anchor and the support base are configured to be detachably fitted to each other by way of the taper fitting structure where the support anchor and the support base are brought into close contact with each other, and a stepped portion which is formed of an upper surface of the support anchor is formed on a boundary between a female threaded hole which is vertically formed in the support base and a vertical hole formed in the upper surface of the support anchor.

Abstract: This disclosure relates to a method for rapidly producing stone models used in manufacturing dentures. In particular, the method utilizes computer aided design and computer aided manufacturing.

Abstract: A dental mill blank including a resin and a filler, wherein the blank is fabricated such that it passes a Thermal Shock Test. The mill blank is substantially free of cracks and discontinuities. Further, the blank may have superior cuttability and hardness.

Abstract: An object is to provide a medical device having excellent antithrombotic and sliding characteristics, which can exert a cell adhesion inhibitory effect. A medical device comprising: a substrate capable of forming hydroxyl groups; and a biocompatible material layer laminated on the substrate at an appropriate position, wherein the hydroxyl groups are formed on a surface of the substrate at least at a required position by a surface treatment, while the biocompatible material layer is formed from a polymer containing phosphorylcholine groups, and wherein the substrate and the biocompatible material layer are joined via a binder layer formed from silica being covalently bonded with the hydroxyl groups and the biocompatible material, respectively.

Abstract: A subject of the invention relates to providing a powder for a translucent zirconia sintered body which is necessary for the production of a zirconia sintered body having a high sintered-body density and high strength and giving an excellent sense of translucency, without conducting any special sintering, such as HIP sintering. The invention relates to a technique for obtaining, through normal-pressure sintering, a translucent zirconia sintered body characterized by comprising zirconia which contains 2-4 mol % yttria as a stabilizer and has an alumina content of 0.2 wt % or lower, and by having a relative density of 99.8% or higher and a total light transmittance, as measured at a thickness of 1.0 mm, of 35% or higher. It is preferred that a powder containing 0-0.2 wt % alumina with a particle diameter of 0.01-0.5 ?m, having a BET specific surface area of 5-16 m2/g and an average particle diameter of 0.3-0.7 ?m, and having a rate of sintering shrinkage in normal-pressure sintering (??/?T; g/cm3·° C.) of 0.

Abstract: A ceramic one-piece implant is provided that comprises a first portion and a second portion that are integrally formed with each other. The first portion can be arranged at a coronal end of the implant for fitting engagement with a dental restoration to the implant. The second portion can contiguously adjoin the first portion at a coronal edge. Further, the second portion can have a width and be arranged apically from the coronal end of the implant. The second portion can also be devised for arrangement in epithelial contact with soft tissue upon implantation of the dental implant. Furthermore, a curvature including the coronal edge can be adjustable by removal of material at least from the second portion while the width of the shoulder is substantially maintained.

Abstract: The invention relates to a method of making a dental blank which combines uniaxial pressing isostatic pressing techniques. The invention also includes a press for performing the method and a system comprising a uniaxial and a isostatic press. The invention may help in efficient manufacturing of dental blanks at minimized costs and maximized quality.

Abstract: A dental implant, comprising a base (10) areas of which can be inserted into a jawbone, having an apically located body (12) and a coronally located neck (14) whose outer surfaces each have a surface microstructure of given roughness, the value of the mean roughness of the body surface being larger than the value of the mean roughness of the neck surface, with the value of the mean roughness of the body surface being Ra=0.75 to 0.95 micrometers and the value of the mean roughness of the neck surface being Ra=0.55 to 0.71 micrometres.

Abstract: The present invention relates to improved biomedical implantable material comprising a plurality of pores, of which one or more of the pores are interconnected below the surface of the material. The improved biomedical implantable material may be used in biomedical implant devices such as orthopedic implants, spinal implants, neurocranial implants, maxillofacial implants, and joint replacement implants. The present invention also relates to a method of preparing an improved biomedical implantable material, comprising subjecting an implantable material to a pore-forming treatment and optionally further subjecting the material to a surface-modifying treatment. The biomedical implantable material may be used in other applications, which as applications where two surfaces are contacted and bonding between the surfaces is required.

Abstract: A patient-specific bone implant has a porous body with a core material covered with tantalum. It is made with unique outer dimensions selected to match a specific patient.

Abstract: Provided are a method of manufacturing a fixture of a dental implant with an improved structure in which the performance of osseointegration is excellent, spread of inflammation is reduced and a combination force between the fixture and an alveolar bone is remarkably increased, and a fixture of a dental implant manufactured by the method. The performance of osseointegration is excellent, and spread of inflammation can be reduced, and a combination between the fixture and an alveolar bone can be remarkably improved. Furthermore, the fixture of the dental implant having the above structure can be easily manufactured.

Abstract: An O-ring insertion tool is disclosed herein which holds and inserts an O-ring into a cap for releasably securing a dental appliance to, for example, a dental attachment assembly secured in the mouth of a patient. The tool comprises a driver having a central portion and at least one end portion with resilient prongs designed to push an O-ring through a bore in a bushing sleeve sized at one end to match the entrance of the cap. The bore has a tapered, frustoconical portion that at least extends up to the smaller end of the bore. The opposite end of the bore is of larger diameter matching the uncompressed dimensions of the O-ring. The prongs fit into the larger end of the bore in which the O-ring is positioned and are adapted to engage and advance the O-ring through the bore. The O-ring is uniformly compressed as it advances through the frustoconical portion of the bore, and the compressed O-ring is then pushed out of the second end of the bore and into position in the cap.

Abstract: Disclosed are a block having a structure for joining an abutment and a superstructure for a dental implant and a method for manufacturing the same. An abutment and a superstructure are not shaped in advance, and instead, a block, in which a structure for joining a fixture and other connection parts of a dental prosthesis are formed, is manufactured such that the block can be machined through CAD/CAM, or, after a wax mock-up or a resin mock-up is scanned and drawn on a paper, the block can be machined through CAM to form an abutment or the crown of a superstructure. In order to provide high strength and high toughness, the block is made of a stabilized tetragonal zirconia polycrystalline (TZP)-based material or a composite of zirconia and oxide. The method comprises the steps of pressing a starting material for a block, machining a resultant formation, and sintering the machined formation.

Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.

Abstract: Method for the production of a denture comprising the following steps:—collection of the biometric data of a patient, namely, the toothed or untoothed mandible and maxilla, the sizing of the jaws, the spatial position thereof relative to the skull, the condyle inclination and the movement of the mandible, and the recording of the mandible movement;—implementation of the data in a virtual articulator which is made available in the main memory of the data processing equipment;—CAD construction of the individual articulator preformed parts and dental molded bodies based on the collected patient data;—production of the individual articulator molded bodies and dental molded bodies by means of a generative manufacturing process based on the recorded biometric data;—incorporation of the individual articulator preformed parts and/or dental molded bodies into a standardized articulator housing, or complete generative manufacture of the articulator with individualized molded bodies.

Abstract: Threaded connection between a male part (2) and a female part (1), particularly between a screw and a dental implant, both parts (1, 2) fitted with a thread profile with spires, whereby the thread step (4b) of the thread profile of the male part (2) is different to the thread step (4a) of the thread profile of the female part (1), obtaining a controlled gap (3) between both parts. According to the invention, one of the two parts (1, 2) has a variable thread step. Therefore, the threaded connection between both parts (1, 2) presents a gap (3) that varies in a non-linear manner. By appropriately adjusting the specific design of the thread steps, it is possible to control the stress distribution throughout the threaded connection in accordance with the interests of the application.

Abstract: A method for the production of a dental implant with a post part which can be introduced into a jawbone and with a mounting part assigned thereto, on which a dental prosthetic piece can be mounted, is to allow the dental technician to perform a simple indexing of the mounting part while drawing on current procedural steps. For this purpose, the apical end of the mounting part is shaped in order to adapt the external cross-section of the mounting part to the internal cross-section of the post part.

Abstract: A dental implant system includes an implant having a well and an abutment having a post shaped to be received in the tapered well. Both the implant and the abutment are made from a millable ceramic, and the abutment post and/or the implant well have grooves carved therein. In one embodiment, the implant and the abutment are joined one to the other with a retentive elastomeric product containing micro-bubbles and micro-spacers. The dental implant system may be produced using a computer-readable medium containing instructions for analyzing surface data and X-ray data, for developing contour data of the implant and of the abutment according to the anatomy of the patient, and for generating machine instruction for milling the implant and the abutment from blocks of the millable ceramic. The invention provides the dentist with total flexibility in determining the most appropriate contours of the implant system and in reducing inventory.

Abstract: Dental implant system having an anchoring part adapted for anchoring the dental implant system within bone, said anchoring part having a bone contacting surface. The bone contacting surface is at least partially made of a metal selected from the group of niobium, tantalum and a niobium-tantalum alloy. Said metal is coated on a basic implant body made of a metal selected from the group of titanium, zirconium and a titanium or zirconium alloy, or of a ceramic material.

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: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.

Abstract: Disclosed herein are methodologies and compositions for coating materials, which can be used in a variety of biological applications.

Abstract: Dental articles are produced using relatively low sintering temperatures to achieve high density dental articles exhibiting strengths equal to and greater than about 700 MPa. Ceramic powders comprised of nanoparticulate crystallites are used to manufacture dental articles. The ceramic powders may include sintering agents, binders and other similar additives to aid in the processing of the ceramic powder into a dental article. The ceramic powders may be processed into dental articles using various methods including, but not limited to, injection molding, gel-casting, slip casting, or electroforming, hand, cad/camming and other various rapid prototyping methods. The ceramic powder may be formed into a suspension, pellet, feedstock material or a pre-sintered blank prior to forming into the dental article.

Abstract: A curable dental impression compound containing a ferromagnetic compound, preferably an iron powder additive as well as a method for guiding the compound into the sub-gingival areas of the tooth by the use of a magnetic field. The term “ferromagnetic” as used herein is used to describe a substance that is capable of being attracted by a magnetic field, in particular a substance that exhibits a high degree of magnetic permeability.

Abstract: The present invention provides a sintered body of titanium compound obtained by sintering the titanium compound and a method for producing the same. A titanium compound represented by the formula (1) or (2) below is sintered. [Ca10(PO4)6]TiO3.nH2O??(1) [Ca10(PO4)6]TiO2(OH)2??(2) (In the formulae, n is an integer of from 0 to 3). The obtained sintered body substantially consists of perovskite and whitlokite.

Abstract: A method for fabricating an individual abutment for a dental prosthesis for use in an implant anchored in an area of the jaw with an implant attachment running on the abutment side, using a working model molded by the jaw area equipped with the implant. For this, the sulcus area of the gum uncovered above the implant and shaped by a sulcus-former extending from the implant attachment is reproduced in the working model. The abutment to be fabricated includes a sulcus section running within the sulcus area and an adjoining head section to admit a part of a dental prosthesis. So that the area of the abutment running below the gum line is geometrically adapted to it, it is proposed that the sulcus area of the working model having an auxiliary implant attachment corresponding to the implant attachment be measured, and on the basis of the data obtained by the measurement, a sulcus section model be determined with a circumferential surface and a de-facto sulcus line limiting it on the implant side.

Abstract: The invention discloses a method and configuration for a medical and dental outpatient diagnostic imaging center. The medical and dental diagnostic imaging center will house a plurality of medial and dental modalities within one center. Also, onsite is a CAD/CAM milling unit and the accessory hardware equipment, and the technology used for creating a rapid prototype medical and dental modeling The present invention also includes other technologies and equipment to improve the productivity of the medial and dental outpatient diagnostic imaging center. The unique equipment configuration and the machine sequence pattern offers many benefits to healthcare delivery in that it provides a service for both the fields of medicine and dentistry.

Abstract: A cluster mill blank includes a framework constructed to cooperate with a blank holder of an existing CAD/CAM system, and a plurality of sub-blanks attached to the framework forming an addressable matrix or cluster blank. CAD/CAM systems including such a framework, as well as associated methods are described.

Abstract: A method of making a dental blank comprises the steps of independently compacting a first and second zone of a quantity of ceramic particles. During compacting, the first and second zones have different compaction factors in at least one stage. Such blanks may be pre-sintered and used in the manufacture of dental restorations. The method may help in controlling the homogeneity of the material structure during manufacturing the blanks.

Abstract: The invention relates to a method for manufacturing dental prostheses, wherein from a raw material area, such as a blank, a dental prosthesis is manufactured (milled out) at a manufacturing position, such as a milling position, the manufacturing position of one or more dental prostheses being determined on the basis of one or more predetermined criteria. Furthermore, the invention relates to a method for checking a worked raw material area and/or a manufacturing arrangement for a raw material area, wherein it is checked whether one or more manufacturing shapes can still be manufactured from a number of predetermined manufacturing shapes. Moreover, the invention relates to a method for manufacturing a dental prosthesis, wherein from a raw material area a dental prosthesis is manufactured, wherein a raw material is selected from a plurality of raw material areas on the basis of one or more predetermined criteria.

Abstract: A method of rapidly making an oral prosthesis with minimal steps and materials is disclosed. The method generally includes the steps of (1) providing a cast of an oral cavity or portion thereof; (2) applying a setting material along one or more setting zones where teeth are absent from the cast subject's oral cavity; (3) engaging one or more prosthetic teeth with the setting material on the cast; (4) applying a self-curing composition along the outward facing surface(s) of the setting material and a portion of the teeth; (5) removing the setting material; (6) applying a self-curing composition to a portion of the inward facing surface(s) of the teeth and the area where the setting material was located; (6) allowing the self-curing compositions to dry; (7) removing the cured composition and associated teeth (the oral prosthesis) from the cast; and (8) preferably polishing the oral prosthesis.

Abstract: The present invention relates to a method for manufacturing a tooth prosthesis, for insertion in a jawbone, including an implant and an abutment on top of the implant. The method includes: defining a shape of the prosthesis and its location in the jawbone by using first data from a first CT scan image of the jawbone and second data from a second image of a gypsum cast, correlating first and second data by extracting from the first data first position reference data of a first reference in the first image, and from the second data second position reference data of a second reference in the second image, the second reference being identical to the first reference; performing a geometric transformation on the second data and/or the first data to have a coincidence of the second image with the first image and to combine the first and second data into composite scan data.

Abstract: A process for the preparation of ceramic dental implants having a surface for improving osseointegration, wherein the following process steps are performed for preparing such surface: —preparation of a ceramic blank having a surface; —treating at least one partial area of the surface of the ceramic blank by an ablating process that produces a surface roughness of the surface that corresponds to a treatment by sand blasting under a blasting pressure of from 1.5 bar to 8 bar and with a grain size of the blasting media used for sand blasting of from 30 ?m to 250 ?m; —followed by a chemical treatment of said at least one partial area of the surface of the ceramic blank treated with the ablating process; —followed by a thermal treatment of the blank whose surface has been subjected to said ablating and chemical treatments at temperatures of >125° C. > A ceramic body obtainable by the process according to the invention is also described.

Abstract: An impression device includes an impression taking-cap (6) designed for adapting on an implant (1) or the like along one prosthetic bearing surface formed by a mount (2) and an annular peripheral shoulder (4). The impression taking-cap (6) includes an annular bearing surface (1) bearing on the annular peripheral shoulder (4) when placed in the mouth. The impression taking-cap (6) is maintained in this position by a retaining peg (13) extending axially from the bottom surface (8) in an inner chamber (9) and capable of axial engagement by friction in a retaining female geometry (2b) provided at the end of the mount (2). It is thus possible to insure an axial fixation of the impression taking-cap (6) on the implant (1) or the like and thus a very reliable impression taking of the annular peripheral shoulder (4), which results in the peripheral tightness of the prosthesis on the implant (1).

Abstract: A device for placing and affixing a dental component to a dental implant permits the precise placement of the dental component (such as an abutment or crown) onto a dental implant in a manner that also provides for a retaining screw to be tightened without having to release the component in any way and hence risk its movement to a non-desired position. In one form, the device comprises a holder including a base having an access opening extending from a first end to a second opposite end of the base, the access opening having an inner surface defining a cylindrical first section and a frustoconical second section, the second section being dimensioned to engage the dental component in an interference fit, the inner surface of the second section terminating in a continuous perimeter at the second end of the base.

Abstract: An implant (4) is provided with attachment and hole-insert parts (2, 3) with surfaces which have different degrees of finishing and/or degrees of roughness and/or porosities (2f, 2g). Arranged on the surfaces there is at least one dozen (A-B) in which the degree of finishing and/or the degree of roughness and/or the porosity is continuously changed. The changes in porosity in said zones can mirror continuous or discontinuous changes in the bone in question, for example the jaw bone or tooth bone. The continuously changed zones can be obtained with the aid of electrolyte (15) and, connected to the latter, an anode and cathode arrangement (13, 14). When establishing the porosity, it is possible to mask different portions of the respective implant and to control the temperature of the implant.

Abstract: An interface including a substrate of biocompatible material such as titanium, tantalum or their alloys having, on the surface of the substrate, a first layer having a first concentration of oxide of the biocompatible material, enriched with a second concentration of phosphorus and with a third concentration of calcium, the ratio between the concentration of calcium and the concentration of phosphorus being greater than two. The interface also includes a second layer having a first surface in contact with the first layer and a second surface. The second layer has a fourth concentration of oxide enriched with a fifth concentration of calcium and a sixth concentration of phosphorus. The fourth concentration is less than the fifth and sixth concentrations and the ratio between the fifth concentration of calcium and the sixth concentration of phosphorus is no less than three.

Abstract: The invention relates to a method for fabricating dental components. A set of geometric data is provided for the three-dimensional description of at least one desired dental component, and based on these geometric data a three-dimensional CAD model of the dental component is created. The CAD model processes the geometric data in the form of layer data to generate numerous CAD model layers which are suitable for use in a laser sintering or laser melting process. The laser sintering or laser melting process is then carried out, based on the layer data for each individual CAD model layer, and with computer assistance a powdered material is correspondingly applied in layers on a fabrication platform. Following the laser sintering or laser melting process, the body of the dental component having the resulting layered construction is transferred to a heat treatment oven, is subjected to heat treatment, and is subsequently cooled.