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WO2005000146A2 - Corps de base pour implant dentaire, implant dentaire a corps de base, pivot d'implant dentaire a introduire dans le corps de base, implant dentaire a corps de base et pivot, element couronne pour pivot ou implant dentaire et emballage pour implant dentaire - Google Patents

Corps de base pour implant dentaire, implant dentaire a corps de base, pivot d'implant dentaire a introduire dans le corps de base, implant dentaire a corps de base et pivot, element couronne pour pivot ou implant dentaire et emballage pour implant dentaire Download PDF

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Publication number
WO2005000146A2
WO2005000146A2 PCT/EP2004/006953 EP2004006953W WO2005000146A2 WO 2005000146 A2 WO2005000146 A2 WO 2005000146A2 EP 2004006953 W EP2004006953 W EP 2004006953W WO 2005000146 A2 WO2005000146 A2 WO 2005000146A2
Authority
WO
WIPO (PCT)
Prior art keywords
base body
cone
implant
crown
section
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.)
Ceased
Application number
PCT/EP2004/006953
Other languages
German (de)
English (en)
Other versions
WO2005000146A3 (fr
Inventor
Ralf Schröder
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2005000146A2 publication Critical patent/WO2005000146A2/fr
Publication of WO2005000146A3 publication Critical patent/WO2005000146A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61C8/0022—Self-screwing
    • 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
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • 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
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
    • 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
    • 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
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0054—Connecting devices for joining an upper structure with an implant member, e.g. spacers having a cylindrical implant connecting part
    • 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
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0066—Connecting devices for joining an upper structure with an implant member, e.g. spacers with positioning means
    • 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
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
    • A61C8/0071—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection with a self-locking taper, e.g. morse taper
    • 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
    • A61C8/0078—Connecting the upper structure to the implant, e.g. bridging bars with platform switching, i.e. platform between implant and abutment
    • 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
    • A61C8/0087—Means for sterile storage or manipulation of dental implants

Definitions

  • the invention relates to a dental implant according to the preamble of claim 1. It also relates to a dental implant with a generic body and an implant post. The invention further relates to an implant post, a tooth implant with a generic base body and an implant post. In addition, the invention relates to a crown body for the implant post or the dental implant. Finally, the invention relates to packaging for a dental implant.
  • a generic dental implant is known from the earlier application 103 15 399.3 for the same applicant of the present invention.
  • the invention is therefore based on the object of specifying a dental implant, in particular a base body for a dental implant, which can be supplied both sub- and transgingival ("subgingival”: below the jaw mucosa, at the level of the jawbone, that is to say from the nibbler - Mucous membrane covered; “transgingival”: within the jaw mucosa, ie approximately at the level of the jawbone • and thus penetrating the jaw mucosa) and also takes maximum account of the patient's cosmetic ideas.
  • sub- and transgingival below the jaw mucosa, at the level of the jawbone, that is to say from the nibbler - Mucous membrane covered; "transgingival”: within the jaw mucosa, ie approximately at the level of the jawbone • and thus penetrating the jaw mucosa
  • the opening defines a coronal end of the base body, the outside of the base body having a coating which, however, does not cover the coronal end, so that the base body in this area is coating-free
  • the coronal end in the coating-free area has the outer contour of two rotationally symmetrical volumes placed on top of one another in the form of a truncated cone or a truncated cone with a lateral surface that is curved, in particular concavely curved, in the vertical section - hereinafter referred to as cone - that in Following the transition from the coated to the coating-free area, a first such cone is arranged, with which the diameter of the base body in the area of this first cone is based on a core diameter that is at least essentially the diameter of the base body pers corresponds in the coated area, increased
  • the task of enabling subgingival and transgingival restoration of the implant is achieved in that the coronal end of the base body with the two cones placed one on top of the other is coating-free.
  • the two cones can thus lie completely within the mucosa (transgingival).
  • the two cones can also be countersunk in the hole made in the jawbone to accommodate the base body by inserting the base body deeper into the hole in the jawbone.
  • the first cone ie the expansion of the base body in the area of the first cone, starting from the core diameter up to the maximum diameter, seals the bore. This is advantageous and desirable because no hole in the jawbone is exactly circular and is always at least slightly larger than the core diameter of the base body.
  • the widening of the coronal end of the base body compensates for these inaccuracies and closes the borehole completely. If the expansion of the basic body pers is sufficiently low, this is possible without traumatization (in the form of crushing or compression) of the jawbone. Furthermore, the widening of the coronal end of the base body causes the base body to be securely fixed in the bore.
  • transgingival implants i.e. with their coronal ends above the jaw mucosa
  • the jaw mucosa or mucous membrane - end bodies can become visible with increasing wearing time or always remain visible if that is, not enough jaw mucosa attaches to the coating-free section of the coronal end of the base body, or mucosa that has already been applied is reduced due to lesions or cleaning trauma.
  • the base body is made of metal, usually titanium, the color of which is in stark contrast to the dentition and is therefore clearly visible.
  • the base body according to the invention enables exact adjustment of the upper edge of the coronal end of the base body with the surface of the mucous membrane, so that the base body is just invisible. Since the thickness of the mucous membrane varies from patient to patient, such an adjustment is only possible with the base body according to the invention, which, if required, that is to say with a small thickness of the mucous membrane, allows the coating-free coronal end to be partially submerged in the jawbone.
  • the second cone of the base body i.e. the section of the coating-free coronal end of the base body with which it tapers again from the maximum diameter to the platform diameter
  • the crown edge can either be at platform level, i.e. at the outer coronal end of the body, or at the transition level, i.e. end in the range of the maximum diameter, or at any position between platform and transition level.
  • a new or modified crown can be placed on the base body, in which the crown edge is extended in the direction of the transition level or up to the transition level.
  • the crown margin is invisible again in this way.
  • the dependent claims relate to particularly suitable dimensions or shapes of the coronal end of the base body, in particular the two cones provided in this area.
  • a particularly advantageous embodiment is that both cones in a vertical section through their lateral surface or their enveloping surface have an incline in the range from 1.0 ° to 10.0 °, in particular in the range from 3.0 ° to 6.0 °, exhibit.
  • This comparatively small slope of the lateral or envelope surfaces of the cones results in a maximum diameter which is only slightly increased in comparison to the core diameter with a small height of the cones.
  • the ratio of maximum and core diameter is such that the squeezing or compression of the bone is reduced to a minimum with a subgingival supply to the implant and at the same time the desired effect of sealing the hole made in the jawbone occurs.
  • a structure or an implant post can be put over the second cone, so that the diameter of the coronal end of the base body can be expanded.
  • the first inner cone With such a base body, the first inner cone, due to its clamping action, serves as an inhibition of rotation and at the same time as a safeguard against vertical loosening for an implant post that can be inserted into the inner bore.
  • the second inner cone is used to seal the inner bore, which is particularly important for a sub- or transgingival restoration of the implant.
  • Claims 13 and 14 relate to an implant post designed to match the above-mentioned base body or to the dental implant with base body and implant post.
  • the implant post in the transition area between the base body section and the crown section has a conical section — an anti-rotation cone — for positive engagement at least with the first inner cone of the base body.
  • the frictional connection between the lateral surfaces of the inner cone and the anti-rotation cone acts as an anti-rotation device, so that twisting of the implant post in the state introduced into the base body is only possible with considerable effort is.
  • provision is made for the base body to be introduced into the prepared bore in the jawbone Basic body is screwed into the jawbone by means of the inserted implant post.
  • the frictional connection between the inner cone and the anti-rotation cone is sufficient to transmit the force from the implant post to the base body. After screwing in the base body, the implant post is pulled off the base body. In this way it is possible to assemble the base body without special tools and only with the other components of the implant that is required anyway.
  • the implant post has an assembly aid at the free end of the crown section.
  • This assembly aid can represent or comprise a tool holder or be shaped in a manner suitable for actuation by the human hand.
  • the assembly aid is only required during assembly of the base body, i.e. while screwing into the hole in the jawbone. Therefore, according to a further advantageous embodiment, it is provided that the assembly aid can be easily detached from the implant post by means of a predetermined breaking point.
  • the implant post is designed according to claim 14.
  • the implant post following the anti-rotation cone in the direction of the crown section has a further conical section - sealing cone - the slope of which basically follows the slope of the second inner cone of the base body, but is selected such that contact between the second inner cone and the sealing cone is only possible in each case or essentially only in the area of the outer circumference of the sealing cone.
  • a dental implant in the case of a dental implant with a base body of the type described above and with an implant post, the implant post having a base body section which can be inserted into the inner bore of the base body and an opposite crown section, the crown section is conical, that is to say shaped like a truncated cone, wherein whose radius is reduced towards the free end of the crown section, and wherein the slope of the crown section corresponds at least substantially to the slope of the second cone of the base body.
  • a crown to be combined with the crown section can be manufactured particularly cheaply in such a way that the crown edge, i.e. a lower edge of the crown or a crown with an embedded crown body, that Platform or transition level or any position between these two levels reached.
  • a further aspect of the invention consists in fixing a crown or a crown body to such a tooth implant or such an implant post as cheaply and securely as possible.
  • This aspect of the invention has independent inventive quality because the fixation according to the invention can also be used in connection with dental implants other than those described above.
  • the crown body is correspondingly fixed with an implant post according to claim 24.
  • an implant post for insertion into a base body of a dental implant or for a tooth implant with a base body and an implant post in particular in the case of a dental implant with a base body of the type described above or a tooth implant
  • the implant post having a base body section which can be inserted into the base body and an opposite crown section provides for the crown section to be conical, that is to say in the shape of a truncated cone, the radius of which decreases toward the free end of the crown section, so that the crown section has at least one circumferential ver - Has recess, such that a circular area defined by the recess extends perpendicular to the longitudinal axis of the implant post, and that in the or each recess an annular axial locking element t, in particular a retaining ring, is inserted or can be used.
  • Such an implant post or such a tooth implant enables a secure axial fixation of a correspondingly designed crown body.
  • a suitable rotation lock is of course provided, for example a web oriented parallel to the longitudinal axis of the implant post or a groove which interacts positively with a corresponding groove or a web in the crown body, or the like.
  • the circlip mentioned is shown, for example, in the specialist book “Dubbel”, 19th edition, section G36, Figure 46.
  • an edge-free circlip ie with a circlip with a circular or oval cross-section, for example, it is possible to attach and reversibly fix an impression bushing with an impression compound.
  • the impression bushing is removed, which is possible due to the edge-free locking ring, because either the edges of the recess in the implant post or the edges of a recess in the impression bushing (which corresponds to the crown body) slide over the edge-free surface of the or each locking ring .
  • the or each edge-free locking ring is replaced by a locking ring suitable for permanent axial fixing, for example a locking ring with a rectangular cross-section.
  • Another separate aspect of the invention relates to an inexpensive packaging for the dental implant.
  • a packaging for a dental implant with an essentially cylindrical outer or envelope contour, consisting of two or more half-shells, and a recess in a top surface, such that an assembly aid arranged at the upper end of the crown section of the implant post is inserted into the packaging
  • Dental implant is accessible
  • the inner parts of the packaging positively embrace a tool holder of the implant post arranged below the mounting aid, such that when the mounting aid is rotated, the packaging is opened by separating at least two of the half-shells at a contact point.
  • easy handling of the packaged dental implant and a quasi-automatic opening of the packaging which is only achieved by turning the assembly aid, is possible. It is therefore not necessary to touch the dental implant below the assembly aid to remove the packaging.
  • the dental implant remains germ-free and can be inserted directly from the packaging into the prepared hole in the jawbone.
  • Fig. 1 a, 1b, 1 c a tooth implant
  • Fig. 2a, 2b, 2c, 2d a base body of the tooth implant
  • Fig. 3 a base body of the tooth implant in longitudinal section
  • Fig. 4 shows a section of a longitudinal section through the base body at its coronal The End
  • FIG. 5 shows a longitudinal section through a base body and an implant post inserted into the base body as a cutout at the connection point between base body and implant post
  • FIG. 6 shows another embodiment of the connection point between base body and implant post
  • FIG. 8 two still different configurations of the connection point between the base body and the implant post
  • FIG. 9 a further configuration of the connection point between the base body and the implant post
  • 10a, 10b a base body with an inserted implant post and a crown placed thereon
  • FIG. 12 shows a longitudinal section through an implant post and a crown to illustrate the avoidance of a gap formation at the crown edge
  • FIG. 13 shows a base body with an inserted implant post and its special configuration in the crown section for receiving a crown body
  • FIG. 14 shows a packaging for a dental implant
  • FIG. 15 shows different shapes of base bodies of a dental implant for the numerical comparison of characteristic dimensions and shapes.
  • FIG. 1 a, 1 b, 1 c show a tooth implant 20 with a base body 21 and a crown 22 extending above the base body 21, the crown 22 forming the visible part of the artificial tooth and the base body 21, as it were, its "foundation".
  • the base body 21 is therefore provided for insertion into the jawbone.
  • a bore is made in the jawbone and the outer diameter of the base body 21 is inserted and the base body 21 is screwed into this bore by means of its thread in order to be firmly enclosed there by the jawbone after a healing phase.
  • the base body 21 is also provided with an outer coating, at least in the area of the thread. This coating allows the accumulation of bone material during the healing phase, so that the basic body 21 is firmly fixed in the jawbone.
  • the coating is shown in FIG. 1 in a manner that is not shown in any more detail by a visible area 23 of the base body 21.
  • a coating-free region 25 extends above the coated region 23, that is to say in the region of a coronal end 24 of the base body 21.
  • the coating-free region 25 penetrates the jaw mucosa 26, which is only shown schematically in FIG. 1, in an area for the aesthetic perception of the wearer of the dental implant
  • the jaw mucosa 26 - also referred to briefly as mucous membrane 26 - ends at the transition point between the base body 21 and the crown 22.
  • the metallic base body 21 is then completely and exclusively covered by biological material, that is to say the jawbone and / or the mucous membrane 26 the crown 22, which resembles a natural tooth in its appearance, is visible. This is shown in Fig. 1 a.
  • the invention follows the path here that the conventional shape of the coronal end 24 of the base body 21 is abandoned and the base body 21 in the coating-free area 25 has the outer contour of two rotationally symmetrical volumes 27, 28 placed one on top of the other in the form of a truncated cone or a truncated cone with a curved section in vertical section , in particular concavely curved, lateral surface - hereinafter referred to as cone 27, 28.
  • a first such cone 27 is provided, with which the diameter of the base body 21 in the area of this first cone 27 is based on a core diameter 29 which is at least essentially the diameter of the base body 21 corresponds in the coated area 23, increased up to a maximum diameter 30.
  • a second such cone 28 is provided, by means of which the diameter of the base body 21 in the region of this second cone 28 is reduced starting from the maximum diameter 30 to a platform diameter 31.
  • the second cone 28 forms the coronal end 24 of the base body 21.
  • This shape of the coronal end 24 of the base body 21 has various advantages. On the one hand, if the basic body 21 becomes visible as the wearing time of the dental implant 20 increases (as shown in FIG. 1b), the crown 22 can be replaced and e.g. to be replaced by a crown 22 which engages around the second cone 28 in its lower region. The entire base body 21 is thus invisible again.
  • both cones 27, 28 have approximately the same or at least substantially the same height. In a special embodiment, both cones 27, 28 are of the same height. As a measure of the height of the cones 27, 28, a height of less than 1, 20 millimeters has proven to be useful.
  • the coating-free coronal end 24 of the base body 21 comprising the two cones 27, 28 is not higher than 3.0 millimeters. A height in the order of magnitude of 2.0 millimeters to 2.4 millimeters has been found to be particularly suitable.
  • both cones 27, 28 have a vertical section through their lateral surface or — in the case of curved “cones” - their envelope surface have an incline in the range from 1.0 ° to 10.0 °, in particular an incline in the range from 3.0 ° to 6.0 °.
  • both cones 27, 28 have at least essentially the same slope.
  • both cones 27, 28 have the same slope.
  • the platform diameter 31 at the outermost end of the coronal end 24 of the base body 21 in the embodiment shown corresponds approximately or at least substantially to the core diameter 29, that is to say the diameter of the base body 21 in the coated area 23.
  • the platform diameter 31 of the core diameter 29 by no more than +/- 18%, in particular no more than +/- 5%.
  • the maximum diameter 30 deviates from the core diameter 29 by no more than 25%, in particular no more than 12.5%.
  • the quotient from a transition angle between the two cones 27, 28 and the height of the first cone 27 is between 10 ° / mm and 179 ° / mm, in particular between 160 mm and 1797mm.
  • the transition angle is the angle enclosed by the two cones 27, 28 with an apex in the range of the maximum diameter 30.
  • the transition angle is correspondingly 180 °.
  • the transition angle is 160 °.
  • FIGS. 2a to 2d show the base body 21 in a position introduced into the jawbone.
  • the jaw bone not shown, is indicated by a horizontal line 32, which represents the upper edge of the jaw bone.
  • the base body 21 protrudes with its coronal end 24 out of the jawbone in such a way that the coating-free area 25 is located completely above the jawbone.
  • the position of the base body 21 shown in FIG. 2a corresponds to a position that can also be achieved with known base bodies of dental implants.
  • FIG. 2b A position of the base body 21 in the jawbone is shown in FIG. 2b, in which the first cone 27 lies within the jawbone.
  • the medical practitioner inserting the dental implant in particular the dentist, is in a position to be able to choose the position of the base body according to the particular circumstances.
  • the coronal ends of which extend above the jaw mucosa.
  • Other implants with a purely cylindrical shape of the base body are only intended for subgingival implantation.
  • the height of the implant 20 with a base body 21 according to the invention can be implanted with respect to the jaw mucosa in any position resulting from the particular circumstances. That an implantation is possible in which the coronal end 24 extends above the jaw mucosa (FIG. 2a).
  • Base body 21 can be achieved in the embodiment according to the invention.
  • the treating physician therefore only needs to have one tooth implant 20 of one type or only one base body 21 of one type ready for all conceivable implant positions.
  • a minimal variety of types results at most with base bodies 21 with different core diameters 29 for the different applications.
  • FIG. 3 shows the base body 21 of the tooth implant 20 in an enlarged view compared to the previous figures and in a sectional view.
  • the individual elements and sections of the base body 21 are given the same reference numerals as in FIGS. 1 a, 1 b, 1c or FIGS. 2a, 2b, 2c, 2d designated.
  • the base body 21 has a central bore 33 running parallel to the longitudinal axis, with an opening 34 to the coronal end 24 of the base body 21.
  • the inner bore 33 is flared at the coronal end 24.
  • a further conical widening which is referred to as a second inner cone 36 for distinction, is provided in the direction of the coronal end 24 of the inner bore 33.
  • At least the second inner cone that is to say the inner cone 36 located directly at the coronal end 24, follows the shape of a truncated cone or a truncated cone with a curved surface in vertical section. 3 shows ratios, wherein both inner cones 35, 36 have a rotationally symmetrical lateral surface corresponding to the lateral surface of a truncated cone, ie they are "real" cones.
  • FIG. 4 shows the relationships from FIG. 3 in a further enlarged form, the representation only encompassing the coronal end 24 of the base body 21. 4, the different diameters 29, 30, 31 of the individual sections of the base body, that is to say the core diameter 29, the maximum diameter 30 and the platform diameter 31, can be seen particularly well in FIG.
  • a rotational securing contour extends below the first inner cone 35.
  • FIG. 5 now shows a first variant of a combination of a base body 21 with an implant post 37, which is provided for wearing the crown.
  • 5 is a representation in partial section, with only the coronal end 24 of the base body 21 with the two cones 27, 28 and the two inner cones 35, 36 and only the section for the positive engagement from the implant post 37 the two inner cones 35, 36 is shown.
  • the section of the implant post 37 which can be inserted into the base body 21, that is to say into its inner bore 33, is referred to as the base body section 38.
  • a crown section 39 of the implant post 37 is located opposite the base body section 38.
  • the crown section 39 is conical, that is to say shaped like a truncated cone, the radius of which is reduced toward the free end of the crown section 39.
  • the slope of the crown section 39 corresponds at least substantially to the slope of the second cone 28 of the base body 21. That is, the slope of the second cone 28 continues with the crown section 39. Both cones, that is to say the second cone 28 and the crown section 39, can be enclosed by a common envelope contour which has a uniform, constant slope along its entire outer surface.
  • the maximum diameter of the implant post 37 in the region of the crown section 39 corresponds at least substantially to the platform diameter 31 of the base body 21. In a preferred embodiment, the maximum The diameter of the crown section 39 is equal to the platform diameter 31 of the base body 21.
  • the implant post 37 has a conical section, referred to below as an anti-rotation cone 40, for positive engagement at least with the first inner cone 35 of the base body.
  • the rotation inhibition results from the slope of the lateral surface of the first inner cone
  • the desired rotation inhibition results from a frictional engagement between the lateral surfaces of the two cones 35, 40, this frictional engagement being stronger than the smaller the slope of the lateral surfaces of the cones 35, 40 is. That with an incline of 1 ° of the lateral surfaces mentioned, the rotation inhibition can be so strong that on the one hand the rotation of the implant post 37 in the base body 21 is prevented, but that it is also impossible to remove the implant post 37 inserted into the base body 21 in an undesirable manner. Practical gradients of the lateral surfaces of the cones 35, 40 will therefore generally be selected in the order of magnitude of more than 1 °, preferably in the range from 3 ° to 8 °.
  • the implant post 37 has a further conical section, hereinafter referred to as the sealing cone 41, following the rotation-inhibiting cone 40 and in the direction of the crown section 40.
  • the slope of the lateral surface of the sealing cone 41 essentially follows the slope of the lateral surfaces of the second inner cone 36 of the base body 21, so that here too there is a positive engagement of the sealing cone 41 with the second inner cone 36.
  • the slope of the lateral surface of the sealing cone 41 is selected such that contact between the second inner cone 36 and the sealing cone 41 takes place only or essentially only in the area of the outer circumference of the sealing cone 41.
  • the first inner cone 35 and anti-rotation cone 40 are suitably designed with regard to the height of the respective lateral surfaces and their incline, so that the implant post 37 is inserted into the Main body 21 is as far as possible until there is contact between the sealing cone 41 and the second inner cone 36.
  • FIG. 7 and 8 show configurations of the form fit between base body 21 and implant post 37.
  • the configuration consists in that the second inner cone 36 and the corresponding sealing cone 41 have a curved outer surface.
  • the outer surface of the second inner cone 36 is convex and the outer surface of the sealing cone 41 is correspondingly curved.
  • the outer surface of the second inner cone 36 is concave and the outer surface of the sealing cone 41 is correspondingly curved.
  • the curvatures of the two cones 36, 41 are chosen in such a way that there is a positive contact between the two lateral surfaces when the implant post 37 is fully inserted into the base body 21.
  • cone in connection with the present invention summarizes a rotationally symmetrical volume in the form of a truncated cone or a truncated cone with a curved surface in vertical section. Therefore, in the case of the configurations according to FIG. 7 or FIG. 8, the second inner cone 36 and the sealing cone 41 are still referred to as cones, although the lateral surface is curved in a convex or concave manner in contrast to the conventional cone shape.
  • FIG. 9 shows another embodiment of the implant post 37, in which the slope of the second cone 28 is also continued in the region of the crown section 39 of the implant post 37.
  • the special engagement between implant post 37 and base body 21 further reduces the gap formation at the connection point, so that the risk of undesired penetration of, for example, body fluids, bacteria or the like into the interior of the dental implant 20 is further reduced.
  • the maximum diameter of the implant Post 37 larger than the platform diameter 31 of the base body 21.
  • the implant post on an underside of the crown section 39 has an annular recess 42, the center of which coincides with a central axis of the base body section 38 or with the same central axis of the crown section 39.
  • the lateral surface of the anti-rotation cone 41 is one of the side surfaces of the recess 42.
  • An opposite side surface 43 of the recess is chamfered in such a way that it follows or corresponds to the slope of the second cone 28 of the base body 21. In the case of an implant post 37 designed in this way, it is, as it were, “put over” the coronal end 24 of the base body 21.
  • the outer surface of the rotation-inhibiting cone 40 and the opposite side surface 43 of the annular recess 42 slide along this on the outer surface of the second cone 28 and on the outer surface of the first inner cone 35 until there is a flat contact at both connection points.
  • This flat contact simultaneously causes an inhibition of rotation as well as a closure of a possible gap at the connection point between the implant post 37 and the base body 21.
  • the coronal end 24 of the implant post 37 is designed in such a way that the aforementioned lateral surfaces can slide along one another until the flat support results, that is to say in particular the second inner cone 36 is shaped such that there is no contact with the sealing cone 41.
  • the annular recess 42 has a depth measured along the side surface 43 opposite the rotation-inhibiting cone 40, which depth is greater than the height of the second cone 28 of the base body 21 or essentially corresponds to the height of this second cone 28.
  • FIG. 10 shows a partial view of the dental implant 20 in the area of the connection point between the base body 21 and the implant post 37.
  • the implant 20 is shown with a crown 22 placed on the implant post 37, only the lowermost part of the crown 22 being shown by border lines.
  • the crown 22 encloses the crown section 39 of the implant post 37 complete, which is why the crown 22 is shown with bold lines and the crown section 39 with thin lines.
  • An implant post inner bore 44 shown with dashed lines, runs inside the implant post 37.
  • the implant post inner bore 44 runs centrally along a longitudinal axis of the implant post 37 and is provided for receiving a cylinder head screw, not shown, also referred to below as a cylinder head screw.
  • the radius of the implant post inner bore 44 is matched to the radius of the cylinder head of the cylinder head screw in the region of the crown section 39 of the implant post. In the area of the base body 38 of the implant post 37, the radius of the implant post inner bore 44 is matched to the smaller radius of the thread of the cylinder head screw.
  • the cylinder head of the cylinder head screw has a tooth relief on its underside, that is to say the side facing the thread of the cylinder head screw.
  • a section of the implant post inner bore 44 provided as a contact surface of the cylinder head in the region of the transition between the larger and smaller diameter of the implant post inner bore 44 likewise has a tooth relief.
  • the tooth relief in the contact surface of the implant post inner bore 44 is designed to correspond to the tooth relief on the underside of the cylinder head of the cylinder head screw.
  • the two tooth reliefs serve to inhibit the rotation of the cylinder head thread screw inserted into the implant post 37 to fix it in the base body 21.
  • the or each tooth relief preferably has six teeth, each tooth in particular having a height in the range from 0.1 mm to 0.2 mm.
  • a thread provided for receiving the cylinder head thread screw (cf. FIG. 3) in the central bore 33 of the base body 21 has at least a minimal change in continuity with respect to the thread of the cylinder head screw. This increases the clamping effect between the thread flanks of the cylinder head screw and the thread in the central bore 33 of the base body, so that a better hold of the cylinder head thread screw is ensured.
  • the change in continuity of the thread relates to a pre-cutting in the region of the runout of a thread flank.
  • the crown 22 can end at almost any height along the common envelope surface of these two cones 28, 39 due to the same or approximately the same slope of the conical crown section 39 and the second cone 28 of the base body 21.
  • 10 shows the situation (FIG. 10a) that the crown 22 also covers the second cone 28 and ends in the area of the maximum diameter 30 of the base body 21.
  • FIG. 10 b shows that the crown 22 only the crown section 39 of the implant post 37 covered, so that the crown 22 ends in the area of the platform diameter 31 of the base body 21.
  • FIGS. 11 shows the different implantation positions already explained in connection with FIGS. 2a to 2d with FIGS. 11a, 11b, 11c and 11d.
  • FIGS. 2a to 2d which show the complete base body 21
  • a section of the tooth implant 20 is shown in the region of the connection points between the base body 21, implant post 37 and crown 22.
  • the representation in Fig. 11a corresponds to the representation in Fig. 10b, i.e. the crown 22 only covers the implant post 37 and the base body 21, i.e. its coronal end 24 should, if possible, be surrounded by jaw mucosa 36, not shown here.
  • the position of the upper edge of the jawbone is again illustrated by the horizontal line 32.
  • the crown 22 can be exchanged or adjusted in such a way that its lower edge also encloses the second cone 28 of the base body 21.
  • the illustration in FIG. 11b thus corresponds to the illustration in FIG. 10a.
  • Another transgingival implant position is shown in Fig. 11c.
  • the lower edge of the crown 22 can completely surround the second cone 28.
  • 11 d shows an implantation position with a subgingival implanted base body 21.
  • the lower edge of the crown 22 extends into the jawbone. With such an implantation position, visibility of the base body 21 is avoided even better.
  • the base body 21 optimally seals the borehole in the jawbone in the implantation positions in FIGS. 11c and 11d.
  • crown edge 46 One possible way of avoiding the formation of a gap between the crown section 39 of the implant post 37 and a lower edge of the crown 22, hereinafter referred to as the crown edge 46, with independent inventive quality is explained below with reference to FIG. 12.
  • the crown edge 46 When sealing a possible gap between the crown 22 and the crown section 39 of the implant post 37, the main concern is the termination of the crown edge 46 on the conical outer surface of the crown part 39.
  • the crown 22 has on its inside a recess for inserting the crown section 39 or for putting the crown 22 onto the crown section 39.
  • This recess is in accordance with the conical shape of the crown Section 39 is also conical, so the recess forms an inner cone.
  • the slope of the outer surfaces of the two cones i.e. the conical outer surface of the crown section 39 and the conical outer surface of the corresponding inner cone in the crown 22, preferably have the same or at least approximately the same slope, so that there is a positive and / or frictional connection between the two outer surfaces results.
  • the form fit between the two conical lateral surfaces corresponds approximately to the form fit and / or friction fit between the first inner cone 35 of the base body 21 and the rotation inhibiting cone 40 of the implant post 37, as shown in FIG. 5.
  • the gap remaining between the two components 22, 37 of the dental implant 20 is to be closed as far as possible in the region of the crown edge 46, it is provided according to an advantageous embodiment, as shown in FIG.
  • crown rim 46 can additionally be slightly cranked inwards so that the gap between the crown 22 and the implant post 37 is actually closed in the lowest region of the crown rim 46.
  • the implant post 37 has an assembly aid 47 at the free end of the crown section 39.
  • the mounting aid 47 is designed as a tool holder 48, in particular as a hexagon.
  • a predetermined breaking point 49 is provided between the tool holder 48 and the crown section 39.
  • the predetermined breaking point 49 is designed as a circumferential, annular depression.
  • the implant post 37 has at least one further circumferential depression 50.
  • Two circumferential depressions 50 are shown.
  • the depression 50 runs in the lateral surface of the crown section 39 such that a circular area defined by the depression 50 runs perpendicular to the longitudinal axis of the implant post 37 or to the same longitudinal axis of the crown section 39.
  • An annular axial securing element not shown, in particular a securing ring, can be inserted into the or each recess 50.
  • the securing element is preferably made of the same material from which the implant post 37 is also made. In a special embodiment, however, the securing element is made of ceramic material.
  • the circumferential recess 50 has an angular, in particular rectangular, profile, so that securing elements with a corresponding profile cannot be pushed out of the or each recess 50.
  • the circumferential recess 50 can, however, also be designed without edges, for example with a round, parabolic or elliptical profile, so that a securing element inserted into such a circumferential recess 50 from the circumferential recess 50 can be pushed out.
  • a crown body (not shown) or an impression bushing for use with the implant post 37 or the tooth implant 20 can be placed on the crown section 39 of the implant 37.
  • the crown body or the impression bushing has a recess matched to the shape of the crown section 39 of the implant post 37.
  • the recess is thus designed to be form-fitting to the crown section 39.
  • This enables the provision of prefabricated crown bodies in the form of cylindrical or essentially cylindrical elements with a suitable form-fitting recess.
  • the treating physician selects from a collection of prefabricated crown bodies the crown body that is best suited for the implantation case, ie there are crown bodies that are suitable for modeling back, canine and / or cutting teeth. There are also crown bodies that reflect different dimensions of the teeth of individual patients.
  • the work of the treating physician is reduced to detail adjustments, ie the crown body is ground to the required extent, so that the basic shape of the tooth to be reproduced is obtained (by approx.
  • a modeling compound is then applied to this prefabricated and individually ground crown body, which forms the surface of the artificial tooth. Crown body and modeling compound together form the crown 22. Of course, only the outer modeling compound, in particular porcelain or ceramic, is visible from the crown 22, while the crown body is completely enclosed within the modeling compound.
  • the use of prefabricated crown bodies has a considerable advantage, which lies above all in the reduction of working hours and the resources required, also in the area of the dental laboratory.
  • the crown body can be produced in large series, so that the quality of the crown body is always constant, in contrast to the individual casting previously required.
  • the crown body and crown section 39 are matched to one another with regard to their material. This ensures that the crown section 39 and crown body can be optimally combined.
  • the crown body (not shown) has at least one circumferential recess in its inside in such a way that a circular area defined by the recess runs perpendicular to a central axis of the recess.
  • the type or height of the or each depression corresponds to the or each circumferential depression 50 of the implant post 37.
  • the securing element already mentioned in connection with the description of the circumferential depression 50 of the implant post 37 can either be located in the circumferential depression 50 of the implant post or in a corresponding depression of the crown body.
  • the crown body can be permanently fixed against removal by means of such a clamping ring, in particular such a clamping ring for a circumferential recess 50 or a corresponding recess in the crown body on the implant post 37.
  • Securing rings are particularly preferably used, which have an edge-free contour in the direction of one of the depressions mentioned, that is to say either the circumferential depression 50 or the depression in the recess of the crown body.
  • an edge-free contour which can also be provided in the direction of both depressions, it is possible to initially only temporarily fix the crown body on the implant post 37. Because of the freedom from edges, the securing ring also slides out of at least one recess when the crown body is pulled off, even with an angular profile of one or both recesses 50.
  • the or each locking ring with a contour that is free of edges at least on one side is exchanged for one or more locking rings with an angular contour and the crown 22 is permanently fixed to the implant post 37 with such locking rings ,
  • the package 51 has a substantially cylindrical outer or envelope contour and consists of two or more half-shells 52.
  • the package has a recess in one of its cover surfaces, which Art that the assembly aid 47 of a dental implant 20 inserted into the packaging is accessible.
  • Inner parts of the packaging 51 which are not shown in more detail, encompass the tool holder 48 of the implant post 37 arranged in the region of the mounting aid in such a way that when the mounting aid 47 is rotated, the packaging 51 is opened.
  • the packaging 51 is opened by spreading the sections of the packaging 51, in particular in each case a section of one of the two half-shells 52, which positively encompass the tool holder 48, so that the two half-shells 52 are at a point of contact 53 can be separated.
  • This configuration of the packaging 51 has the advantage that the dental implant 20 only has to be touched by the medical practitioner on the assembly aid 47 and thus the sterility of the dental implant is ensured.
  • the part that may be contaminated when opening the packaging 51 and when handling the dental implant 20, namely the assembly aid 47 and / or the tool holder 48, is removed anyway due to the predetermined breaking point 49 between the assembly aid 47 and the crown section 39 in the implanted tooth implant 20.
  • the 15 shows a basic body 21 of a dental implant 20 in longitudinal section with different dimensions.
  • the letter A denotes the angle that indicates the slope of the lateral surface of the first inner cone 35 (cf. FIG. 4).
  • the letter B is the angle, which is the slope indicates the outer surface of the second inner cone 36 (see FIG. 4).
  • the letter C denotes the angle which indicates the slope of the lateral surface of the second cone 28 (cf. FIG. 4).
  • the letter D denotes the angle which indicates the slope of the lateral surface of the first cone 27 (cf. FIG. 4).
  • transition angle that is to say as the angle at the transition between the first and second cones 27, 28, in the order of representation, that is to say again from top to bottom: 165 ° / 156 ° / 159 ° / 176 °
  • V also denotes the volume which the second cone 28 displaces in its expansion beyond the core diameter 29 of the base body.
  • the two basic bodies shown at the bottom in FIG. 15 correspond in their outer contour in the region of the coronal end of the outer contour to known basic bodies.
  • the base body shown at the bottom is more suitable for a subgingival implantation than the base body according to the invention, because the coronal end is hardly effective for closing the drill hole in the jawbone.
  • the basic body shown directly above is only conditionally suitable for a transgingival implantation because the comparatively large slope of the first cone and the comparatively high volume that it displaces, resulting in an unacceptable traumatization of the jaw bone leads. This base body is therefore only suitable for implant situations in which the coronal end of the base body remains above the jaw mucosa.
  • the two basic bodies shown at the top represent different embodiments of a basic body according to the invention. Such a basic body can be placed in any conceivable implantation position in the jawbone, as is evident, for example, from FIG. 2.
  • the invention relates to individual components of a tooth implant 20, such as the base body 21 and implant post 37, as well as the entire tooth implant 20, whereby the invention allows implantation of the tooth implant 20 in all conceivable implantation positions, in particular sub- and transgingival.

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

Abstract

L'invention concerne des éléments d'un implant dentaire (20) tels que corps de base (21) et pivot (37), ainsi que l'implant dentaire (20) dans sa totalité. Selon l'invention, l'implant dentaire peut être implanté dans une position quelconque, notamment en position sous-gingivale et transgingivale.
PCT/EP2004/006953 2003-06-28 2004-06-26 Corps de base pour implant dentaire, implant dentaire a corps de base, pivot d'implant dentaire a introduire dans le corps de base, implant dentaire a corps de base et pivot, element couronne pour pivot ou implant dentaire et emballage pour implant dentaire Ceased WO2005000146A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003129207 DE10329207A1 (de) 2003-06-28 2003-06-28 Grundkörper für ein Zahnimplantat, Zahnimplantat mit Grundkörper, Implantatpfosten eines Zahnimplantats zur Einführung in den Grundkörper, Zahnimplantat mit Grundkörper und Implantatpfosten sowie Kronenkörper für den Implantatpfosten oder das Zahnimplantat und Verpackung für Zahnimplantat
DE10329207.1 2003-06-28

Publications (2)

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WO2005000146A2 true WO2005000146A2 (fr) 2005-01-06
WO2005000146A3 WO2005000146A3 (fr) 2005-05-12

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PCT/EP2004/006953 Ceased WO2005000146A2 (fr) 2003-06-28 2004-06-26 Corps de base pour implant dentaire, implant dentaire a corps de base, pivot d'implant dentaire a introduire dans le corps de base, implant dentaire a corps de base et pivot, element couronne pour pivot ou implant dentaire et emballage pour implant dentaire

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DE (1) DE10329207A1 (fr)
WO (1) WO2005000146A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1839617A1 (fr) * 2006-03-28 2007-10-03 Biomed Est. Implant à filetage
WO2007134686A1 (fr) * 2006-05-23 2007-11-29 Vogul, S.L. Implant dentaire à cône interne
EP2106767A1 (fr) * 2008-03-31 2009-10-07 Ziterion GmbH Implant dentaire bipartite
US8123524B2 (en) 2005-04-12 2012-02-28 Biotechnology Institute, I Mas D, S.L. Dental implant, pieces to be connected to a dental implant, and the internal connection between the dental implant and each piece
US8968002B2 (en) 2005-06-03 2015-03-03 Straumann Holding Ag Coupling for a multi-part dental implant system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7249949B2 (en) 2004-06-29 2007-07-31 Lifecore Biomedical, Inc. Internal connection dental implant
FR2886838B1 (fr) * 2005-06-10 2008-02-29 Rech S Et De Fabrication S E R Ensemble prothetique dentaire
DE102011052644B4 (de) * 2011-07-19 2013-05-29 Zv3 - Zircon Vision Gmbh Aufbauteil für einen künstlichen Zahnersatz, künstlicher Zahnersatz und Verfahren zur Herstellung und/oder Implantierung eines künstlichen Zahnersatzes
EP2586398A1 (fr) * 2011-10-25 2013-05-01 Sudimplant Implant dentaire

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Publication number Priority date Publication date Assignee Title
EP0629384B1 (fr) * 1993-06-14 1996-11-27 Institut Straumann Ag Dispositif de fixation d'une prothèse dentaire sur un os de la machoire
SE512050C2 (sv) * 1997-01-21 2000-01-17 Nobel Biocare Ab Rotationssymmetriskt benförankringselement
US6126662A (en) * 1998-10-09 2000-10-03 Carmichael; Robert P. Bone implant
IT1307923B1 (it) * 1999-01-25 2001-11-29 Hofmann S A S Di Roberto Hofma Dispositivo di impianto dentale endosseo.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8123524B2 (en) 2005-04-12 2012-02-28 Biotechnology Institute, I Mas D, S.L. Dental implant, pieces to be connected to a dental implant, and the internal connection between the dental implant and each piece
US8968002B2 (en) 2005-06-03 2015-03-03 Straumann Holding Ag Coupling for a multi-part dental implant system
US11779439B2 (en) 2005-06-03 2023-10-10 Straumann Holding Ag Coupling for a multi-part dental implant system
EP1839617A1 (fr) * 2006-03-28 2007-10-03 Biomed Est. Implant à filetage
WO2007134686A1 (fr) * 2006-05-23 2007-11-29 Vogul, S.L. Implant dentaire à cône interne
ES2315100A1 (es) * 2006-05-23 2009-03-16 Vogul, S.L. Implante dental de cono interno.
ES2315100B1 (es) * 2006-05-23 2010-01-05 Vogul, S.L. Implante dental de cono interno.
RU2440061C2 (ru) * 2006-05-23 2012-01-20 Вогус, С.Л. Зубной имплантат с внутренним конусом
EP2106767A1 (fr) * 2008-03-31 2009-10-07 Ziterion GmbH Implant dentaire bipartite

Also Published As

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DE10329207A1 (de) 2005-01-13
WO2005000146A3 (fr) 2005-05-12

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