EP2654603A1 - Implant crestal et procédé pour son traitement - Google Patents

Implant crestal et procédé pour son traitement

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Publication number
EP2654603A1
EP2654603A1 EP11805482.4A EP11805482A EP2654603A1 EP 2654603 A1 EP2654603 A1 EP 2654603A1 EP 11805482 A EP11805482 A EP 11805482A EP 2654603 A1 EP2654603 A1 EP 2654603A1
Authority
EP
European Patent Office
Prior art keywords
implant
ribs
rib
central axis
radial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11805482.4A
Other languages
German (de)
English (en)
Inventor
Frank-Peter Spahn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE202010013168U external-priority patent/DE202010013168U1/de
Application filed by Individual filed Critical Individual
Publication of EP2654603A1 publication Critical patent/EP2654603A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0037—Details of the shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A61C8/0013—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/0075—Implant heads specially designed for receiving an upper structure

Definitions

  • the present invention relates firstly to a crestal implant comprising an elongate anchoring portion extending in a longitudinal direction, an implant stump and a transitional portion between the anchoring portion and the implant stump, the anchoring portion having an elongated core longitudinally and circumferentially thereof - Starting direction distributed a plurality of ribs, wherein the ribs form rib groups, each comprising a plurality of distributed on a common core cross section at the core circumference arranged ribs, wherein at the transition portion one or more surfaces is provided or circumferentially at least circumferentially in a radial Reference distance extending from the geometric longitudinal central axis, and wherein the implant comprises plastic and preferably consists of plastic.
  • the implants in question in the context of the invention serve as an artificial tooth root, which can anchor a dentist or surgeon in the bone of the upper or lower jaw and on whose implant stump a set of teeth such as a tooth crown can be anchored.
  • Such implants are therefore also referred to as dental implants or occasionally according to their location as jaw implants.
  • the implant stump is also referred to in the literature as an abutment.
  • various implant types are known in the prior art.
  • Metallic crestal implants, the actual classic implants in a kind of tooth root shape have at their anchoring portion a thread (or two threads with different threads to achieve a kind of compression), with which they are screwed into the bone.
  • the object of the invention is to advantageously develop a generic implant so that, in particular, one or more of the aforementioned restrictions can be avoided as far as possible.
  • the object is achieved according to the invention initially and essentially in conjunction with the features that one or more groups of ribs are provided, in the case of which all of the ribs have the radially outer rib edge along its entire or only partial circumferential extension at a radial distance from the geometrical longitudinal center axis of the implant, which corresponds to or approximately corresponds to the radial reference distance, and that one or more further groups of ribs are provided, within which not all ribs, but only some, preferably only two ribs opposite each other on the core circumference, or of their ribs all ribs on their radially outer rib edge along its entire or only partial circumferential extent have a radial distance from the geometric longitudinal central axis which is greater than the radial reference distance.
  • Such an implant in particular with regard to the special rib arrangement and formation as well as with regard to its plastic-based production, advantageously enables the implant, starting from only a single base design and size, to be treated by the attending physician even before being used on different anatomical surfaces Circumstances can be adjusted.
  • the width or the width of the outer rib edges agreed, for the anchorage effective implant cross section, in particular the diameter of an imaginary concentric to the geometric longitudinal center axis circular curve from which the rib edges of a rib group are limited, can be changed by preferably ribs, each having a radial distance between the radially outermost rib edge and the geometric longitudinal center axis is greater than the radial reference distance, are removed as required from their free longitudinal ends or edges ago.
  • the implant according to the invention as also described below, can be developed and further developed in such a way that a dowel-like shape and mode of operation result.
  • the implant comprises plastic or consists of plastic
  • the implant can be made of polyetheretherketone (PEEK) or of a mixture of different polyetheretherketones, which can achieve practically the same elastic modulus as that of jawbone.
  • PEEK polyetheretherketone
  • the problems of the conventional metal implants in crestalen collar area do not face, because the bone does not move away from the implant in the case of bending, but also bends the implant in the same way.
  • the connection to the prosthetics also poses no problems, since the crestal end of the implant projecting from the mucous membrane after installation is ground to suit the needs like a tooth with a rotating instrument may.
  • Metallurgical problems, such as corrosion, are excluded because no metal is incorporated.
  • an implant is supposed to transmit power, but on the other hand, it can not detach itself from the bone. In conventional metallic implant bodies, this is achieved by means of threads which carry these implants and which are intended to be pre-cut in the bone, which is not homogeneous, and then approximately agree.
  • the implant according to the invention which in a preferred embodiment may also be referred to as a so-called.
  • the force is transmitted through the ribs formed without pitch angle and preferably via the conical collar region. Since, unlike metal, the material polyetheretherketone (PEEK) deforms when it encounters hard edges, the holes in the jaw can be made slightly narrower in preparation for implant placement in the jawbone than the surface of the implant requires for the insertion procedure , The implant can be tapped into such a hole, whereby the ribs create something springy. At the final location, the feathers will unfold elastically again, without damaging bone cells due to excessive pressure, since the same or practically the same modulus of elasticity exists and the bone thus predetermines the rate of unfolding of the ribs. The ribs then prevent detachment from the drill channel, so that no thread is necessary.
  • PEEK polyetheretherketone
  • the anchoring portion can serve with the ribs for anchoring the implant in the jawbone and transferred together with the transition section and, depending on the anatomical conditions, possibly with a portion of the implant stump the resulting loads, including if necessary, a certain proportion of the implant stump can be inserted into the jawbone.
  • the collar section is the transition section and, depending on the design, the implant stump (or a part thereof).
  • a core cross section, at the core circumference of which the ribs of a rib group are arranged, is in each case a plane and perpendicular to the geometric longitudinal central axis, and / or that the rib edges of a group of ribs in the circumferential direction in a common, perpendicular to the longitudinal central axis Cross-section run. It is preferred that the ribs have no slope and thus do not form a thread.
  • Dowel-like mode of action in which ribs in the drill channel first apply to the core and then unfold again and wedge the implant in the drill channel, is also considered an advantage that the desired anchorage can be achieved even in different rotational positions of the implant around its geometric longitudinal central axis can.
  • the rib groups each have a plurality, preferably four, ribs, of which each rib group only a total of two, mutually opposite to the core circumference ribs at its radially outer rib edge along the whole or only partially (ie, if necessary also only locally) circumferential extent have a radial distance from the geometric longitudinal central axis, which is greater than the radial reference distance, and of which the remaining ribs at its radially outer rib edge along its entire or only partially (ie, possibly only local) circumferential extent a radial distance from the have geometric longitudinal center axis, which corresponds to the reference distance or approximately corresponds.
  • the transition section has a core from which radially outwards a plurality of circumferentially distributed and spaced apart circumferential segments extend whose radially outer surfaces are in the radial reference distance from the geometric longitudinal center axis Extend circumferentially and longitudinally along an imaginary cylindrical envelope surface.
  • the radially outermost rib edge of only a few or all of the ribs belonging to a same rib group extends along an imaginary circular line concentric with the longitudinal geometrical center axis. The outermost rib edge then has along a circumferential direction extending around the geometric longitudinal central axis a constant radial distance therefrom.
  • At least one so-called first rib group is assigned a first radial distance of the outer rib edges from the longitudinal central axis, as compared to the radial reference distance, and longitudinally on one or both sides one or more so-called second rib groups are arranged in this so-called first rib group, to which a so-called second radial distance of the outer rib edges from the longitudinal center axis is assigned, which is smaller than the first radial distance and larger than the radial reference distance the radial reference distance is.
  • a radial distance between the radially outermost rib edge and the geometric longitudinal center axis is greater than the radial reference distance between at least one so-called.
  • second rib group which is associated with the so-called second radial distance of the outer rib edges from the longitudinal center axis
  • at least one rib group which at all ribs of the radial Referenzab- is associated with the outer rib edges of the longitudinal central axis, at least one so-called.
  • Third rib group is arranged, which is associated with a larger, compared to the radial reference distance, so-called.
  • Third radial distance of the outer rib edges of the longitudinal central axis which is smaller than the said second Radial distance from the longitudinal center axis and greater than the radial reference distance. It is also preferred that viewed in the longitudinal direction on both sides of a series of several groups of ribs, within which only a single (ie not all) or all ribs, a radial distance between the radially outermost rib edge and the geometric longitudinal center axis is greater than the radial reference distance , One or more groups of ribs are arranged, in which in particular all ribs in each case a radial distance between the radially outermost rib edge and the geometric longitudinal center axis of the implant corresponds to the radial reference distance or approximately corresponds.
  • ribs whose radial distance between the radially outermost rib edge and the geometric longitudinal center axis corresponds at least approximately to the radial reference distance have a triangular cross section in a cross section plane passing through the geometric longitudinal central axis.
  • ribs whose radial distance between the radially outermost rib edge and the geometric longitudinal central axis is greater than the radial reference distance have a cross section in a cross-sectional plane extending through the geometric longitudinal central axis, starting from an base adjoining the core cross section into an elongated one Projection tapers, wherein it is preferably provided that the extension has at least a length section approximately constant cross-sectional thickness.
  • ribs have, also favored by the production of plastic material, an elastic deformability, which when inserting the implant into the bore channel a resilient application to the core cross-section and a later e- Lastic unfolding or spreading supported by the core.
  • the extensions of the ribs may have a lapp-like design. It is also preferred that the elongated extension is oriented towards its free end with respect to the geometric longitudinal central axis inclined towards the implant stump, so that in this respect is to speak of a dowel-like design.
  • ribs are arranged in a plurality of rows of ribs, wherein each row of ribs in each case a plurality of distributed on the core in the longitudinal direction and within a mutually equal circumferential angle interval arranged on the core circumference ribs summarizes. It is preferably provided that two mutually diametrically opposite to the core circumference rib rows are provided, within which each rib is assigned to the radially outer rib edge in the circumferential direction only locally or continuously the so-called. Radial reference distance from the geometric longitudinal center axis.
  • two further rows of ribs which are likewise diametrally opposite each other on the circumference of the circumference, are provided, in each of which ribs are associated whose radially outer rib rim is assigned locally or continuously at least one radial distance from the geometrical center axis in its circumferential direction is greater than the radial reference distance.
  • the last-mentioned rows of ribs comprise different ribs, which differ from one another with respect to their respective radial spacing greater than the radial reference distance, and in particular also such ribs whose radial distance from the geometrical longitudinal center axis corresponds to the radial reference distance.
  • These quasi-mixed rib groups preferably lie opposite one another in a cross section leading through the geometrical longitudinal center axis, which perpendicular intersects another cross section, in which the two other aforementioned rib groups lie opposite one another on the core circumference. It is preferably provided that each also a circumferential segment of the transition section within each of a circumferential angle interval, which is associated with one of the rows of ribs extends. For example, four rows of ribs may be present distributed on the circumference, of which two rows of ribs are diametrically opposite each other on the circumference of the core.
  • the ribs With respect to the respective two side edges of the ribs, there is the possibility that they extend parallel to one another or approximately parallel, so that the ribs have a substantially identical rib width from the core to their radially outermost rib edge. It is preferred that the rib width gradually gradually decreases from the core to the radially outermost rib edge. It is also preferable that the ribs belonging to a respective row of ribs are aligned with each other with respect to their side edges from rib to rib. This is accompanied by the fact that the radially outermost rib edge of ribs with a comparatively larger radial distance from the geometric longitudinal central axis extends in the circumferential direction over a comparatively smaller circumferential angle within the circumferential angular interval.
  • rib edges whose radial distance from the geometric longitudinal center axis corresponds or approximately corresponds to radial reference spacing may extend over a circumferential angle of about 45 ° over a circumferential angular interval that encompasses, for example, a quarter circumference (90 degrees), while outer rib edges extend from others Rib groups with comparatively larger radial distance within the same circumferential angle interval over a correspondingly even lower circumferential angle extend.
  • the implant In order to be able to easily insert the implant into the drill channel, it is possible for the implant to have a foot end which tapers in cross-section to the free longitudinal end of the anchoring section and has a core from which a plurality of radially outwardly distributed, circumferentially distributed and spaced segments arranged foot segments extend, wherein it is preferably provided that each foot segment in each one Extending circumferential angle corresponding to one of the rows of ribs associated circumferential angle interval.
  • a concavely rounded groove extends between adjacent rows of ribs, in particular between adjacent circumferential segments and adjacent leg segments, in particular in the longitudinal direction, in each of which a stiffening projection is embedded in at least some of the rib groups between adjacent ribs.
  • the implant is produced in one piece.
  • plastic is preferred as the material, in particular a material of or based on polyamide or polyether ketone, such as preferably of polyether ether ketone (PEEK), or of polyoxymethylene (eg Delrin) or the like.
  • PEEK polyether etherketone
  • PEEK polyetheretherketone
  • the implant is wholly or at least predominantly made of plastic.
  • one or meh - Rere preferably two diametrically opposite each other on the circumference, projections are formed, which extend radially outward beyond these surfaces or the radial reference distance, in particular up to the maximum so-called.
  • Radial distance between rib edges and the longitudinal central axis preferably provided in that the protrusions are in a cross-sectional plane perpendicular to the longitudinal geometrical center axis a wedge-shaped, radially outwardly tapered cross-section and in a plane passing through the geometric longitudinal central axis cross-sectional plane have a cuboid cross-section.
  • the protrusions which cause an antirotational effect, can also be shortened or completely removed according to the individual requirements, for which purpose the protrusions can be separated or, for example, removed, for example, by means of a cutting instrument (for example knives).
  • An expedient development may be that a first surface region of a dental implant region whose implant material consists of polyetheretherketone or at least polyetheretherketone, and at least a second surface region of a dental implant region whose implant material consists of polyetheretherketone or at least polyetheretherketone, respectively by means of mechanical and / or physical and / or chemical action is prepared, so that at least one surface property of the surface resulting from the preparation of the first surface area at least partially wise (ie, surface or complete) in their expression of this surface property of emerging from the preparation of the second surface area surface differs and the expression of this surface property of the surfaces resulting from the preparation at least partially from the appearance of the surface property of each associated surface area before or without the preparation differs, wherein it is preferred in the at least one surface property, but not necessary to be the surface retentivity.
  • the adhesion or retention capacity between two bodies or substances in this case between surface regions of the dental implant and at least one type of, for example, ions, molecules, body cells (for example of the bone, gums or the mucous membrane) or tissues or the like.
  • the dental implant on its surface which in its untreated starting state has inert or inert properties due to the selected plastic material, not to be completely or uniformly prepared, but preferably to be prepared differently only at certain surface areas, so that there in each case at least one surface property, preferably the surface retentivity, is differentiated from the expression of this surface property in question before or without the respective preparation, in order to adapt the dental implant in a targeted manner to locally different requirements in its implantation environment.
  • the outside of the prepared surface areas of the dental implant are preferably untreated and preferably have surface properties of the implant material or of PEEK. In terms of surface retentivity, it is also possible to speak of retention or retention capacity.
  • the retentivity of the implant material which consists of polyetheretherketone or at least polyetheretherketone formed surface has in the initial state or before the preparation according to the invention an initial or original retentivity, which is dependent on the plastic material itself and which is also a measure of the surface retentivity according to the invention Preparation forms.
  • the preparation or action on the implant surface advantageously makes it possible to vary certain surface properties of surface areas differently, while the already selected material or strength properties inside the dental implant can remain unchanged.
  • the dental implant has uniformly, for example, deformation and strength properties in its interior, and, on the other hand, an implant according to the invention which has different surface properties on different surface regions can be used in different sizes.
  • the mentioned polyetheretherketone can consist of molecules of the same chain length or of molecules of different chain length.
  • an implant material which comprises at least polyetheretherketone
  • polyetheretherketone forms the predominant ingredient but that certain additives of other substances, preferably comparatively less, are preferred for influencing the deformation and / or strength properties
  • Can be added amount such as, for example, carbon fibers and / or glass fibers and / or, for example, titanium fibers or other substances, organic or inorganic additives with or without fiber structure.
  • a material offered under the name PEEK-OPTIMA® can be used as starting material for the implant.
  • a mechanical action may, for example, be a change of shape and / or structure, in particular of the fine structure, of the implant surface, for example the removal of parts of the surface, the roughening or the production of individual or several pores, recesses or the like ,
  • Such a mechanical preparation can, for example, be made by machining.
  • a thermal preparation in particular molding Change, the surface area possible.
  • the surface resulting from the preparation can thus have a shape deviating from the surface of the still unprepared surface area. It goes without saying that in the case of further preparation options, the shape of the surface during preparation can also remain unchanged. On the other hand, a roughening can, for example, also take place chemically.
  • Other possibilities of, for example, physical or chemical preparation include the addition or application, the coating or the incorporation of substances into consideration. Further possibilities for the preferred development are indicated in the dependent claims 21 to 24.
  • the at least two surface areas are hydrophilic and / or hydrophobic in one another and in comparison to PEEK of varying degrees, whereby a so-called
  • amphiphilic training is possible.
  • one of the surface regions may be made comparatively hydrophobic, so that there the retention is reduced in comparison to untreated polyetheretherketone and in comparison to the second surface region for tartar, so that the calculus deposit is reduced.
  • the other surface area may, for example, be comparatively hydrophilic in order to support protein accumulation.
  • the at least two surface regions have different surface activation from one another and in comparison to PEEK, for example different activations effected by means of plasma jet ion treatment.
  • the at least two surface areas from each other and in comparison to PEEK have different surface energy.
  • the surface energy which is also referred to as surface tension
  • the surface retentivity can also be influenced by the extent to which a surface has an excess of positive or negative charge carriers.
  • the invention also relates to a method for processing or for producing a crestal implant, ie a dental implant, which first provides that an implant is provided or manufactured, which realizes one or more of the features of claims 1 to 24. In this respect, it is also possible to speak of an implant blank or of an implant body.
  • the method proposes that the implant be shortened at one or more points in the longitudinal direction and / or that its ribs and / or its projections are machined.
  • the method makes it possible, in particular, for the implant to be geometrically adapted by a practitioner to anatomical conditions of the jaw prior to insertion into a jaw.
  • Such a machining or adaptation was not conceivable for a person skilled in the art in the case of conventional implants made of metal or titanium, since this could lead to destruction of the material structure and to the risk of corrosion.
  • the projections are shortened and / or weakened or removed, preferably by the projections are removed or separated by means of a cutting instrument.
  • the implant can be processed as an implant material, for example by means of a separation process (for example cutting), a cutting process (for example milling) or, for example, by means of grinding.
  • a first surface region of a dental implant region whose implant material consists of polyetheretherketone or at least polyetheretherketone, and at least a second surface region of a dental implant region whose implant material consists of polyetheretherketone or at least polyetheretherketone, respectively is prepared by means of mechanical and / or physical and / or chemical action, so that at least one surface property of the surface resulting from the preparation of the first surface area differs, at least in some areas, from this surface property of the surface resulting from the preparation of the second surface area, and the Expression of this surface property of the surface resulting from the preparation at least partially from the expression supply this surface property of the respectively associated surface region prior to or differs without the preparation, which is preferably at the said surface characteristic, but not necessary, to minimum theecknretentterrorism of the dental implant for supply a in a dental implant environment in an oral cavity mögli- natural or ingested substance or type of body cells.
  • the attachment and / or the plasma treatment can be performed either after complete or predominant shaping of the dental implant and / or after or during local deformation of the dental implant. It is possible that at least part of the prepared surface area is changed in its surface form before or during the deposition of the substance and / or the plasma treatment, which can be done, for example, by means of hot stamping, cold stamping, milling, punching and / or drilling. It is possible to heat the thermoplastic material polyetheretherketone (PEEK) on the surface and to introduce nanoparticles into the heated surface or else to heat the nanoparticles or very small particles and, by means of such a melting / brazing process at the PEEK Surface to install.
  • PEEK thermoplastic material polyetheretherketone
  • the implant surface could be redesigned in only one operation and the substance accumulation carried out in the process.
  • the other or previously described implant features or measures can not only industrial, but also advantageous by a practitioner or dentist in the Production of a dental implant or during the post-processing of a implant blank itself be executed.
  • the at least two surface regions can, for example, be made hydrophilic and / or hydrophobic and / or amphiphilic to different degrees from one another. There is also the possibility that the at least two surface areas are activated differently from each other. Finally, the process can also be carried out in such a way that a surface energy differing from one another is produced at the at least two surface regions.
  • FIG. 1 shows in perspective an implant according to the invention according to a first embodiment, in magnification
  • Figure 2 is an end view of the foot in the direction II according to FIG. 1.
  • FIG. 3 shows a side view in the viewing direction III according to FIG. 2;
  • FIG. 4 shows a side view in the viewing direction IV according to FIG. 2
  • FIG. 5 shows a sectional view along section plane V-V according to FIG. 2, limited to the anchoring section and the transition section;
  • FIG. 6 is a sectional view along section line VI - VI of Figure 2, also limited to the anchoring portion and the transition section. a side view of the implant according to FIGS. 1 to 6, wherein different possibilities for shortening the implant are shown by way of example by means of separating lines; 8 shows a sectional view of an implant according to FIGS. 1 to 7 in an exemplary application prior to installation in a jawbone;
  • FIG. 10 shows the arrangement according to FIG. 9 at a later time
  • FIG. 11 is a sectional view along section line XI - XI of Figure 10;
  • FIG. 12 shows the arrangement according to FIG. 10, however, after grinding the implant stump and after fastening a tooth crown to the ground tooth stump or prosthetic stump;
  • FIG. 13 shows a second preferred application example of an implant according to the invention according to a preferred embodiment, prior to the assembly of dentures; perspective view of an implant according to the invention according to a second preferred embodiment;
  • FIG. 15 shows an end view of the foot end in the viewing direction XV according to FIG. 14;
  • Fig. 16 is a sectional view taken along section line XVI - XVI of Figure 15, limited to the anchoring portion and on the transition section.
  • Fig. 17 is a sectional view taken along section line XVII - XVII of Figure 15, also limited to the anchoring portion and the transition portion.
  • Fig. 18 shows another possible application example of the implant according to the invention according to the second preferred embodiment
  • FIGS. 1 to 6 show another possible embodiment of the implant according to the invention.
  • An implant 1 according to the invention in accordance with a first preferred exemplary embodiment is first presented with reference to FIGS. 1 to 6.
  • the implant 1 shown is made as a whole in one piece from the plastic polyetheretherketone (PEEK) whose modulus of elasticity corresponds approximately to the modulus of elasticity of jawbone material.
  • the implant 1 comprises an anchoring section 2 extending in its longitudinal direction L or along its longitudinal geometric central axis A, with which the implant 1 can be crestally inserted, ie anchored, from the alveolar ridge into the bore channel of a jawbone and anchored therein, so that the implant 1 is held in the longitudinal direction L and can withstand the loads occurring.
  • the implant 1 comprises a transition section 3, which adjoins the anchoring section 2 in the longitudinal direction L, to which an implant stump 4 in turn adjoins in the longitudinal direction L.
  • the anchoring portion 2 has an elongated core 5. From this go many ribs, initially denoted uniformly by the reference numeral 6. As illustrated in particular in FIG. 1, numerous ribs 6 are arranged distributed in the longitudinal direction L and in a circumferential direction U running around the geometrical longitudinal center axis A at the anchoring section. The connection cross-sections of the ribs 6 on the core 5 (see base 14) are spaced approximately equidistant from one another in the longitudinal direction L and in the circumferential direction U.
  • ribs 6 which are arranged one behind the other on the core 5 in mutually equal circumferential angular position but longitudinally L are referred to collectively as rib series 8, which is indicated by corresponding brackets in FIG. Accordingly, in the example, four rows of ribs 8 are present. Starting from the core 5, the ribs 6 extend in the radial direction r, ie radially outward.
  • the transition section 3 comprises a core 9 which extends in a straight extension of the core 5.
  • a core 9 which extends in a straight extension of the core 5.
  • four circumferential segments 10 distributed in the circumferential direction U and spaced apart from each other extend whose radial outer surfaces 11 at a radial reference distance R from the geometric longitudinal central axis A and in the circumferential direction U and extend in the longitudinal direction L along an imaginary cylindrical envelope surface.
  • the four circumferential segments 10 are distributed uniformly in the circumferential direction U in the example and are located centrally in each one of the four marked in Figure 2, each having a circumferential angle of 90 ° spanning circumferential angular intervals 12, without filling these intervals in the circumferential direction.
  • each two surfaces 11 are diametrically opposite each other on the circumference of the core 9, so that the transition section 3 has there virtually an effective reference diameter D.
  • this diameter may be equal to or slightly smaller than the diameter of a drill, by means of which a drilling channel crestal, ie from the alveolar ridge, is drilled into a jawbone to match the implant.
  • FIG. 5 shows that the implant 1 in the example has a total of five rib groups 7.0, in the case of which all of the ribs 6. 0 have the radial distance Ro between the radially outermost rib edge 13 (the reference numeral 13 is uniformly used for the rib edges of all other ribs 6) and the geometric longitudinal central axis A of the implant 1 corresponds to the radial reference distance R.
  • rib groups 7.1, 7.2 and 7.3 are provided, in which in the example all ribs 6.1, 6.2 and 6.3 each have a radial distance Ri, R 2 and R3 between the radially outermost rib edge 13 and the geometric longitudinal central axis A is greater than the radial reference distance R.
  • the term radial distance designates the radial distance, ie the distance in the radial direction r from the geometric longitudinal center axis A.
  • the radial reference distance is the radial distance or the distance in the radial direction of the surfaces 11 from the geometric longitudinal center axis A.
  • FIG. 8 illustrates all ribs uniformly designated by the reference numeral 6 and in addition to the distinction from each other with one of the reference numerals 6.0, 6.1, 6.2 or 6.3. This applies correspondingly to the rib groups 7 or to the reference numerals 7.0, 7.1, 7.2, 7.3 (see FIG.
  • each group of ribs 7 includes four ribs 6, which are each arranged centrally in each one of the circumferential angle intervals 12, so that in two mutually perpendicular, through the geometric longitudinal central axis A transverse directions in each rib group 7 on the circumference two ribs 6 are diametrically opposite.
  • each rib group 7 can have a common Assign effective diameter, wherein the diameter Do equal to twice the radial distance Ro, the diameter Di twice the radial distance Ri, the diameter D 2 twice the radial distance R 2 and the diameter D3 twice the radial distance R3 corresponds.
  • a rib group 7.0 initially adjoins the transition section 3 in the longitudinal direction. These are followed in the longitudinal direction L by a rib group 7.3, a rib group 7.2, a rib group 7.1, a further rib group 7.2, another rib group 7.3 and again several, in the example four, rib groups 7.0.
  • the rib groups 7.1, 7.2 and 7.3 differ from group to group in their radial distance Ri, R 2 and R3.
  • a first rib group 7.1 which is present only once, is associated with a so-called first, at the implant 1 maximum radial distance Ri of the outermost rib edges 13 of the longitudinal central axis A.
  • first rib group 7.1 which is present only once, is associated with a so-called first, at the implant 1 maximum radial distance Ri of the outermost rib edges 13 of the longitudinal central axis A.
  • Second rib group 7.2 is arranged, each of which so-called.
  • a second radial distance R 2 of the rib edges 13 is assigned by the longitudinal central axis A, which is smaller than the first radial distance Ri and greater than the radial Reference distance R is.
  • the two so-called third rib groups 7.3 are each assigned a so-called third radial distance R3 of the radially outermost rib edges 13 from the longitudinal central axis A.
  • the radial distance Ri is greater than the radial distance R 2
  • the radial distance R 2 is greater than the radial distance R3
  • the radial distance R3 is greater than the radial distance Ro, which corresponds to the radial reference distance R.
  • FIG. 5 shows that the ribs 6.0, 6.1, 6.2 and 6.3 also have mutually different cross sections in a cross-sectional plane passing through the geometric longitudinal central axis A.
  • the ribs 6.0 have a substantially triangular cross-section with rounded apex. In that the edge of this cross section facing the transition section 3 is approximately perpendicular to the longitudinal central axis A and the opposite If the inclined flank is inclined, the result is a substantially sawtooth-shaped cross-sectional profile with a rounded profile tip.
  • the rib cross section of the ribs 6. 5 does not protrude laterally in the longitudinal direction L beyond the wide base 14 of the ribs 6. 5 which adjoins the core 5.
  • the reference numeral 14 is also used for the base of the ribs 6.1, 6.2 and 6.3, ie for all ribs, 6.
  • the reference number 15 is also used uniformly for the different rib groups 7 for a better overview.
  • the longitudinal projection 15 extends not only in the radial direction r, but also toward its free longitudinal end 16 in the direction of the transition section 3.
  • the extensions 15 extend in a longitudinal direction, which encloses an acute angle of inclination of approximately 45 ° with the longitudinal center geometric axis A, which runs centrally through the core 5.
  • the implant 1 comprises a foot end 18 tapering in cross-section to the free longitudinal end 17, which has a core 19. From this extend radially outward in the example four evenly spaced apart in the circumferential direction U foot segments 20. Depending on a foot segment 20 is centrally located in the circumferential direction in each circumferential angle interval 12, again without filling this angular interval in the circumferential direction.
  • each rib group 8 at one longitudinal end of a circumferential segment 10 of the transition section 3 and at the opposite longitudinal end of a foot segment 20 of the foot end 18 between adjacent rows of ribs 8 extends in the longitudinal direction L straight through each one concave in its cross-section rounded groove 21, in which between adjacent ribs of some (not all) of the rib groups ever a stiffening projection 22 is embedded ,
  • each protrusion 23 extends, starting from the core 9, between two adjacent peripheral segments 10 radially outwards beyond the surfaces 11.
  • the radial distance R4 (see Figure 6) between the narrow, extending in the longitudinal direction L outer surface 24 and the longitudinal center axis A is greater than the radial reference distance R and in the example corresponds approximately to the radial distance Ri.
  • the projections 23 have in one to the geometric longitudinal central axis A vertical cross-sectional plane of a wedge-shaped, radially outwardly tapered cross section and in a plane passing through the geometric longitudinal central axis A cross-sectional plane a cuboid cross-section.
  • the implant stump 4 is rotationally symmetrical overall with respect to the geometric longitudinal center axis A.
  • the implant stump 4 comprises two conical longitudinal sections 24, 25, of which the first longitudinal section 24 integrally adjoins the transition section 3 with its tapered longitudinal end 26, and of which the second conical longitudinal section 25 with its tapered longitudinal end 27 is integral with the extended longitudinal end 28 of the first length section 24 connects.
  • the tapered longitudinal end 27 has a larger diameter than the tapered longitudinal end 26, and the extended longitudinal end 29 has a larger diameter than the extended longitudinal end 28.
  • the extended longitudinal end 29 coincides with an extended longitudinal end 30 of a third conical longitudinal section 31, the tapered longitudinal end 32nd a free end face of the implant tats 1 forms.
  • the cone angle ⁇ of the third conical longitudinal section 31 is greater than the cone angle ⁇ of the first conical longitudinal section 24 and this in turn is greater in magnitude than the cone angle ß of the second conical longitudinal section 25.
  • the three conical longitudinal sections 24, 25 and 31 are with respect to geometric longitudinal central axis A of the implant 1 concentric.
  • the figures show the implant 1 according to the invention in enlargement in accordance with the first preferred exemplary embodiment selected therefor.
  • the anchoring section 2 has a length of approximately 12 mm, the transition section 3 a length of approximately 2 mm, and FIG Implant stump 4 a length of about 12 mm.
  • the radial distance Ro is about the same as the radial reference distance R in the example 1.45 mm, the radial distance Ri is 1.65 mm, the radial distance R 2 is 1.85 mm, and the radial distance R3 is 2.05 mm, the Each of the diameters Do, D, Di, D 2 and D3 assigned to these radial spacings amounts to twice this value. In the order of 7.1, 7.2, 7.3 and 7.0 of the rib groups, therefore, a change in the radius from rib group to rib group is realized.
  • the diameter of the core 5, 9, 19 is 0.7 mm in the example.
  • the radial distance R4 amounts to 2.05 mm.
  • the length of the first conical longitudinal section 24 measured again in the longitudinal direction L is 4 mm in the example, the length of the second conical longitudinal section 25 is 6.5 mm, and the length of the third conical longitudinal section 31 is 1.5 mm.
  • the expanded end section 28 of the first longitudinal section 24 has a diameter of 6 mm, the extended end section 29 of the second longitudinal section 25 has a diameter of 8 mm, and the tapered end section of the third conical section 31 has a diameter of 6 mm. It is understood, however, that all the abovementioned Measurements and size ratios were chosen only as examples and deviations are possible.
  • the crestal implant 1 selected as an example is explained schematically how it can be adapted geometrically by a user to various anatomical conditions.
  • the extensions 15 of the ribs can be shortened at one or more of the rib groups 7.1, 7.2, 7.3 in order to thereby influence the maximum quasi-effective diameter occurring in the anchoring section 2.
  • the ribs 6.1 could be shortened so far that their radial distance corresponds to the radial distance R 2 of the adjacent ribs 6.2, so that then the maximum effective diameter of the anchoring portion 2 D 2 would be.
  • the extensions 15 of the ribs 6.1 and 6.2 can be shortened to such an extent that the radial spacing of the ribs 6.1 and 6.2 corresponds to the radial distance R3 of the adjacent ribs 6.3. It is understood that the extensions 15 of all ribs 6.1, 6.2 and 6.3 could be shortened, so that their radial distance of the rib edges then uniformly corresponds to the radial distance Ro and the radial reference distance R.
  • the implant 1 can be adapted in this way to drill channels with different diameters.
  • the projections 23 can be shortened as needed or removed altogether. If a further reduction in diameter should be desired, in addition, the ribs 6.0 can be shortened in the radial direction and possibly removed substantially or completely.
  • the implant 1 according to the invention can be shortened by separating implant parts to desired different lengths of various conventional implants.
  • the implant 1, which in the example has a total length of 26 mm, can be shortened to, for example, 13 mm, so that it could be used, for example, in an available, for example, available alveolar crest depth of 8 mm.
  • the implant could be buried in the bone at a depth of 8mm, and 5mm in length could extend out of the bone into the oral cavity to accommodate a crown.
  • the implant 1 described as an example can be sunk between a depth of 8 mm and 21 mm at any height in the bone.
  • the bone may have a width between 2.9 mm and 9 mm.
  • the collar area can be reduced, for example, from 8 mm to 2.8 mm, without causing biomechanical disadvantages.
  • the foot end 18 can be cut off and / or the implant stump 4 can be shortened.
  • the implant 1 can also be shortened in its basal area.
  • the implant 1 could also be shortened in the longitudinal direction L in its adjoining crestal region.
  • one or more of the adjoining the foot end 18 rib groups 7.0 could be separated with; If necessary, a separation of one or more of the rib groups 7.1, 7.2, 7.3 would be possible.
  • the implant 1 according to the invention advantageously makes it possible to achieve the average number of about ten implant variants, which are typically offered by suppliers of metal implants, compared with conventional implants by means of only a single implant 1 according to the invention, which meets the anatomical requirements. can be fitted to replace.
  • FIG. 8 shows the implant 1 prior to insertion into a drill channel 34 prepared for this purpose in a jawbone 33.
  • the gum is designated by 35, the comparatively harder bone margin by 36 and the comparatively softer, somewhat porous bone interior 37 by 37.
  • the drilling channel 34 extends extending from its base in a length section of constant diameter d (cylinder bore 39) associated with the anchoring section 2, to a conically widening bore mouth 38 which in the example serves to receive the first conical longitudinal section 24.
  • the contour of the bore mouth 38 and the cylinder bore 39 is pierced by two diametrically opposed slot-like recesses 40, which serve to receive the two projections 23. 41 designates a natural tooth present in the direction of view of FIG. 8 behind the treatment site.
  • the quasi-effective diameter Do associated with the ribs 6.0, as well as the reference diameter D correspond to the diameter d of the drilling channel 34, so that the ribs 6.0 alone do not allow a firm axial anchoring.
  • the effective diameter Di assigned to the ribs 6.1 or the rib group 7.1 is greater than the diameter d. The same applies, although to a lesser extent, for the diameters D 2 and D3 of the ribs 6.2 and 6.3 or the rib groups 7.2 and 7.3.
  • FIG. 9 shows that, therefore, the ribs 6.1, 6.2 and 6.3 approach the core 5 in a spring-elastic manner when the implant 1 is knocked into the drill channel 34.
  • the implant 1 has reached its final position in the jaw bone, and the ribs 6.1, 6.2 and 6.3 unfold gradually, without damaging bone cells by excessive pressure. Since the material of the implant 1 has the same elastic modulus as the surrounding bone, the bone dictates the rate of deployment. The unfolding ribs 6.1, 6.2 and 6.3 then prevent detachment of the implant 1 from the drill channel 34, so that no thread is required.
  • the implant 1 is anchored dowel-like in the surrounding bone and effectively secured against axial withdrawal from the drill channel 34.
  • the insertion or knocking of the implant 1 into the drill channel 34 takes place crestally, ie from the jaw comb.
  • the implant 1 according to the invention differs in this respect from Implants inserted from the side or laterally in recesses in the jawbone. Since in the example the first conical longitudinal section was inserted into the jawbone 33, a desired aesthetic superstructure, for example a dental crown, can be fastened to the second conical longitudinal section 25.
  • FIG. 12 shows that for this purpose the previously conical longitudinal section 25 has been ground so that it now tapers in the longitudinal direction L, starting from the first conical longitudinal section 24.
  • the fracture shows that a dental prosthesis 45 has been applied to and fixed to this now comparatively slimmer and inverted cone, which forms a prosthetic stump, where the dental prosthesis 45 is a crown, which is practically the shape of the adjacent teeth 41 corresponds.
  • FIG. 13 shows a further preferred example of application of the implant 1 according to the invention. Differing from FIGS. 8 to 11, the second conical longitudinal section 25 has been separated on the implant 1. The remaining first conical longitudinal section 24 was not inserted into the jawbone 33, but protrudes beyond the alveolar ridge into the oral cavity. The first conical length portion 24 can therefore in this example for the assembly and attachment of serving as a dental prosthesis aesthetic
  • FIGS. 14 to 17 an implant 1 according to the invention is presented according to a second preferred embodiment. To avoid repetition and to provide a better overview, details corresponding to the example of FIGS. 1 to 7 are given the same reference number.
  • the first and second lengths 24,25 slightly deviate from a severe cone or truncated cone shape by being extended to the enlarged one Circumferential circumferential grooves 43 are each proceeding by providing on the first longitudinal section 24 three spaced circumferential grooves 42 and by extending the projections 23 in the longitudinal direction L into the region of the first longitudinal section 24.
  • the longitudinal sections 24, 25 but have a substantially conical shape.
  • the third, essentially conical longitudinal section 31 in the longitudinal direction L is adjoined by a cross-sectionally hexagonal attachment 44, the longitudinal extent of which in the example amounts to 5 mm.
  • This extension can serve in practice for receiving the implant 1 with a setting instrument, which represents a similar Allen mortar. After placing the implant in the bone, the attachment 44 may be cut off or used by the practitioner.
  • a further departure from the example of FIGS. 1 to 7 is that in the fin groups 7.1, 7.2 and 7.3 not all the ribs 6.1, 6.2, 6.3 at their radially outer rib edge 13 have a radial distance Ri, R 2 , R3 from the geometrical Have longitudinal central axis A, which is greater than the radial reference distance R.
  • each rib group 7.1, 7.2, 7.3 again has four ribs (also again uniformly denoted 6.1, 6.2, 6.3), of which, however, only two ribs 6.1 lying opposite each other on the core circumference per rib group , 6.2, 6.3 at its radially outer rib edge have a radial distance Ri, R 2 , R3 of the geometric longitudinal central axis A, which is greater than the radial reference distance R, the two remaining ribs 6.1, 6.2, 6.3 at its radially outer rib edge 13 a Radial distance Rio, R20, R30 of the geometric longitudinal center axis A have, which corresponds to the reference distance R.
  • the two projections 23 are not located in a straight extension of the two grooves 21, but on the other hand have been offset by 45 ° in the circumferential direction, so that they extend through one of the circumferential segments 10 in the longitudinal direction L.
  • the protrusions 23 may be shortened and / or weakened by a surgeon (depending on anatomical need), depending on the elastic need.
  • ribbed groups 7.1, 7.2, 7.3 such ribs 6.1, 6.2, 6.3, to which the radial distance Rio, R20 or R30 is assigned (see FIG. 17), can correspond in cross-section, for example, to the ribs 6.0.
  • Fig. 18 shows a possible application example of the implant 1 according to the invention according to the preceding embodiments.
  • the second length section 25 was separated and the first length section 24 ground to a prosthetic stump.
  • At the opposite longitudinal end was an axial reduction by the core 5 was separated with all the rib groups located thereon 7.0, so that the implant 1 can also be used in a jaw cross section of lesser height.
  • the implant 1 is inserted into the jawbone 33 at a lesser depth than in the preceding figures.
  • the dental implant 1 is made entirely of polyetheretherketone (PEEK). After the initially pure shaping production of the dental implant 1, therefore, its surface, designated as a whole by 57 in FIG. 1, initially also has the known inert or reaction-resistant properties of this thermoplastic material.
  • PEEK polyetheretherketone
  • dental implants 1 of the entire surface 57 have prepared only the surface areas 46, 47, 48, 49 and 50 (either industrially or by a dentist) to locally modify each at least one surface property. This will be explained in more detail below by means of individual examples.
  • the surface area 46 comprises the entire surface of the ribbed dental implant region 46 'in the anchoring section 2. Only there was the surface activated by means of a plasma treatment using, for example, helium or argon (a mixture with nitrogen may also be suitable). In this treatment, ions are dissolved out of the polyetheretherketone so that free radicals are formed which facilitate the addition of, in particular, nitrogen, hydrogen and oxygen ions, ie. H. increase surface retentivity, ultimately allowing easier attachment of extracellular matrix proteins to the tissue and improving tissue adherence.
  • a plasma treatment using, for example, helium or argon (a mixture with nitrogen may also be suitable).
  • ions are dissolved out of the polyetheretherketone so that free radicals are formed which facilitate the addition of, in particular, nitrogen, hydrogen and oxygen ions, ie. H. increase surface retentivity, ultimately allowing easier attachment of extracellular matrix proteins to the tissue and improving tissue adherence.
  • the surface area 47 is assigned to one of the teeth 6 as a dental implant region 47 'and, with comparatively smaller dimensions, thus lies within the surface area 46.
  • the round surface area 47 was first formed by means of a through bore passing through the rib 6 and thus mechanically prepared. In this passage opening 55 a matching in shape and size substance particle was pressed from hydroxyapatite so that it is held in a non-positive.
  • the substance contained in the substance 51 is thereby deposited on the surface of the dental implant which has been locally changed in shape, the substance particle itself also forming a surface resulting from the preparation.
  • the surface resulting from the preparation of the surface region 47 which is located on the substance grain 51, has a surface retentivity deviating from polyether ether ketone.
  • the surface area 48 is located on another tooth 6 and has a polygonal contour. Therein a certain amount of heated nanoparticles 52 from the substance chosen for the preparation was pressed against the rib 6 with a hot spatula. The nano-particles of the substance were firmly attached to the depression or pore 56 melted into the thermoplastic polyether ether ketone.
  • the surface area 49 is located on one of each of the projections 20 formed dental implant region 49 '.
  • the surface area 49 was first mechanically prepared by punching out a rectangular window as a continuous recess 53 therefrom. Therein, in a subsequent preparation step, a chip 54 of appropriate size was pressed in, which contains a substance with an active substance advantageous for this dental implant region 49 '.
  • the surface of the chip resulting from the preparation has different surface properties from PEEK.
  • the surface area 50 comprises the circumferential surface of the first conical length portion 24 from the transition portion 3 to about half the length.
  • the dental implant region 38 ' is thus part of the first conical length portion 24.
  • the surface area 50 may typically be in the area of the gum and mucosa after insertion of the dental implant into the jaw.
  • the surface area 50 was therefore passivated in the chosen example by means of cold ionizing cold plasma at atmospheric pressure with a gas suitable for passivation in order to negate the surface. This can be achieved by splitting off H + ions from polyether ether ketone so that an excess of O H ions remains on the surface.
  • the resulting thus from the preparation surface has different surface properties than the pure implant material. Alternatively, it may occur in a preparation resulting from a preparation.
  • the surface for example, to act on the surface of a coat formed from a substance on the dental implant.
  • the surface resulting from a preparation may, for example, be a surface of PEEK itself, which has been roughened during the preparation.
  • a plurality of surface areas of the dental implant 1 have been prepared in a divergent manner so that the surface retentivity of the respective surfaces thereof differs both from each other and each from the original surface retentivity of their associated surface area.
  • the projections 23 can not only be shortened by a surgeon (depending on anatomical necessity), or weakened (depending on the elastic necessity), but they can also be provided with openings by punching or milling by means of a mechanical preparation and then allow the insertion or welding of substances that are advantageous for healing in the bone or accelerate these (for example, bone formation factors, bone morphogenetics protein, platelet-rich plasma, minerals in the form of beta-tricalcium phosphate, hydroxyapatites) and / or of Antiseptics / antibiotics, in particular for the prevention of infections during bone healing.
  • Openings such as "pores" may be introduced into a material, such as polyetheretherketone, at those sites for incorporation of substances or for impregnation with substances where appropriate.
  • a material such as polyetheretherketone
  • antiseptics can be deposited in the so-called collar region or transition section 3, minerals and / or bone formation factors on the projections 23 and / or ribs 6.1, 6.2, 6.3 and / or platelet-rich plasma in the region of the ribs. All disclosed features are essential to the invention.
  • the disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application.
  • the subclaims characterize in their optional sibling version independent inventive development of the prior art, in particular to make on the basis of these claims divisional applications.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Prostheses (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne un implant crestal (1) comprenant une partie d'ancrage (2) allongée, un moignon d'implant (4) et une partie de transition (3), la partie d'ancrage (2) présentant un noyau (5) allongé duquel partent plusieurs nervures (6) qui forment des groupes de nervures, une ou plusieurs surfaces qui s'étendent dans la direction périphérique (U) à une distance de référence radiale étant prévue(s) sur la partie de transition (3), et l'implant (1) présentant du plastique. Il est proposé de prévoir un ou plusieurs groupes de nervures dans lesquels le bord radial extérieur (13) des nervures présente par rapport à l'axe central longitudinal (A) de l'implant (1) une distance radiale (R0) qui correspond au moins approximativement à la distance radiale de référence et il est proposé de prévoir un ou plusieurs groupes de nervures à l'intérieur desquels seul un certain nombre de leurs nervures ou à l'intérieur desquels toutes leurs nervures présentent sur leur bord radial extérieur le long de l'entièreté ou seulement d'une partie de leur étendue périphérique une distance radiale par rapport à l'axe central longitudinal qui est supérieure à la distance radiale de référence.
EP11805482.4A 2010-12-20 2011-12-20 Implant crestal et procédé pour son traitement Withdrawn EP2654603A1 (fr)

Applications Claiming Priority (3)

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DE202010013168U DE202010013168U1 (de) 2010-12-20 2010-12-20 Crestales Implantat
DE102011001401A DE102011001401A1 (de) 2010-12-20 2011-03-18 Crestales Implantat und Verfahren zu dessen Bearbeitung
PCT/EP2011/073336 WO2012084896A1 (fr) 2010-12-20 2011-12-20 Implant crestal et procédé pour son traitement

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EP (1) EP2654603A1 (fr)
AR (1) AR084572A1 (fr)
BR (1) BR112013015527A2 (fr)
DE (1) DE102011001401A1 (fr)
EA (1) EA201390937A1 (fr)
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WO2010098543A2 (fr) * 2009-02-24 2010-09-02 (주)시원 Implant dentaire

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BR112013015527A2 (pt) 2016-09-20
TW201231023A (en) 2012-08-01
DE102011001401A1 (de) 2012-06-21
WO2012084896A1 (fr) 2012-06-28
US20140004481A1 (en) 2014-01-02
AR084572A1 (es) 2013-05-29
EA201390937A1 (ru) 2013-12-30

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