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WO2005053565A2 - Implant dentaire - Google Patents

Implant dentaire Download PDF

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Publication number
WO2005053565A2
WO2005053565A2 PCT/EP2004/053269 EP2004053269W WO2005053565A2 WO 2005053565 A2 WO2005053565 A2 WO 2005053565A2 EP 2004053269 W EP2004053269 W EP 2004053269W WO 2005053565 A2 WO2005053565 A2 WO 2005053565A2
Authority
WO
WIPO (PCT)
Prior art keywords
neck part
bone screw
bone
set according
outline
Prior art date
Application number
PCT/EP2004/053269
Other languages
German (de)
English (en)
Other versions
WO2005053565A3 (fr
Inventor
Max Mettler
Anton Wetzel
Original Assignee
Max Mettler
Anton Wetzel
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
Application filed by Max Mettler, Anton Wetzel filed Critical Max Mettler
Priority to EP04804678A priority Critical patent/EP1689316A2/fr
Publication of WO2005053565A2 publication Critical patent/WO2005053565A2/fr
Publication of WO2005053565A3 publication Critical patent/WO2005053565A3/fr

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
    • A61C8/001—Multiple implanting technique, i.e. multiple component implants introduced in the jaw from different directions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/082—Positioning or guiding, e.g. of drills
    • A61C1/084—Positioning or guiding, e.g. of drills of implanting tools
    • 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
    • A61C8/0018—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
    • A61C8/0042—Details of the shape consisting of two halves
    • 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
    • A61C8/0066—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
    • A61C8/0089—Implanting tools or instruments
    • 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
    • A61C8/0089—Implanting tools or instruments
    • A61C8/009—Implanting tools or instruments for selecting the right implanting element, e.g. templates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry
    • 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
    • A61C8/0036—Tooth replica
    • 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

Definitions

  • the invention relates to an endosseous dental implant with a bone screw and a neck part.
  • the invention also relates to a set with such a dental implant and a template and a milling head for adapting the bone bed to a dental implant.
  • the invention also relates to a set with such a dental implant and a measuring gauge.
  • an endosseous implant for fastening a fixed denture is known.
  • This implant has a two-part post. The two parts can be screwed together. One part forms the end of the post that can be inserted into the jawbone, the other the end protruding from the mucous membrane cover for the attachment of the fixed dentures. The division into two allows the first part of the post to be inserted into the jawbone.
  • the mucous membrane cover can close over this during the healing process. Since the part used to fasten the dentures is only used later, its shape can be designed in such a way that it is most favorable for the later attachment of the dentures. Conical or flat contact surfaces are proposed which form very sharp edges without the dentures. After attaching the dentures, however, thanks to these sharp edges, the smoother transition between the outer part of the post and the dentures is guaranteed. Furthermore, an elastically yielding intermediate layer between the two parts and a flexible threaded chuck made of plastic are proposed. After implanting the post and attaching the dentures, the first part sits in the jawbone up to its coronal end. An elastic ring is placed in the area of the mucous membrane.
  • the second part is placed on this ring, which is therefore arranged above the mucous membrane and serves as the basis for the dentures.
  • a plastic disk can be inserted again between this second part and ⁇ the denture.
  • the second part has a threaded pin which is screwed into a threaded chuck, which threaded chuck is in turn screwed into the first part.
  • DE-A-34 3578 proposes not to connect the parts by screws, but by a special clamp connection. Since the implant according to DE-A-2413883 fully met the requirements regarding imitation of the tooth holder and the adjustability, the structure of the implant disclosed in DE-A-3 13578 is basically the same.
  • the implant is also composed of a first part, which can be inserted into a jawbone, and a second part.
  • the second part engages with a cylindrical pin in a blind hole in the first part.
  • the connection of the two parts is achieved by a clamp, which is produced by inserting the second part undercooled into the first and heating it up and thus expanding it. This ensures that no loosening can occur.
  • This connection can be released again by cooling the second part.
  • a head with a lateral constriction is formed on the second part. The constriction is at the level of the gums or the exit from them when the implant is inserted.
  • a hole is formed, in which a pin with a conical head is glued in with an intermediate layer made of plastic.
  • a fastening part sits on the cone, which can be detachably fastened to the cone with a clip that can be inserted from the side.
  • the attachment part is attached to a denture.
  • the denture can thus be placed on the cone with the attachment part and attached to it.
  • a disadvantage of this prior art is that the metal post is visible.
  • the visible part of the implant is shaped regardless of the bone line and tooth shape.
  • the joint between the first and the second part lies in the area of the bone edge. This joint can be open, even if the clamp fit is otherwise very firm and tight, so that bacteria can get stuck in it. This can lead to infections in the area of the bone edge, to regression of the bone and thus to an undesirable decrease in the bone volume and the strength of the anchoring of the implant.
  • An endosseous dental implant is known from US-A-2003/0031982.
  • This comprises a bone screw which has a joining surface coronally, a coronal base part which has a seating surface for placement on the joining surface, and a seating surface opposite the coronal shoulder surface.
  • the joining surface and the seating surface correspond to one another in such a way that the neck part and Bone screw in a predetermined number of relative rotational positions with respect to the sheep axis as an axis of rotation is possible.
  • the surface of the bone screw and the surface of the base part are roughened, however, a band with a smooth surface is formed at the coronal end of the neck part.
  • the implant enables the shoulder surface to be adjusted regardless of the rotational position of the bone screw.
  • the shoulder surface can therefore deviate from the normal to the implant axis.
  • a secondary part is arranged on the shoulder surface.
  • a tooth or a crown can later be placed on the secondary part.
  • the joint between the base part and the secondary part is accessible from the oral cavity.
  • the base part is anchored together with the secondary part in the bone screw.
  • a screw is used for anchoring, which extends through the base part into the bone screw. Therefore, it cannot be ruled out that microorganisms penetrating between the secondary part and the base part will also colonize the joint between the bone screw and the base part within the bone.
  • the dental implant is to be improved in particular in such a way that the risk of microorganisms penetrating through the implanted parts into the region of the joint between the bone screw and the base part is eliminated. According to the invention, this object is achieved by the features of claim 1
  • An endosseous dental implant is formed by a set of parts, which set comprises a bone screw, which has a joint surface coronally, and a neck part that can be placed on the joint surface of the additional screw with a seating surface.
  • the bone screw and the neck part are arranged coaxially to an axis of the implant.
  • the joining surface and the seating surface are designed corresponding to one another in such a way that the neck part and the bone screw can be joined in a plurality or a plurality of positions Bone screw and neck part rotated to different degrees relative to each other about the shaft axis.
  • the neck part has a coronal shoulder surface to which a tooth crown can be connected. With such an implant, an outer surface of the neck part has a hygiene-friendly, in particular polished, edge.
  • the neck part advantageously has an osseointegrative surface. This creates a stable connection between the bone and the neck.
  • This region of the neck part to be inserted into the bone can also be grooved in the axial direction of the implant or provided with one or more ribs in order to prevent the implant from twisting during its use.
  • the neck part forms a wall which is impenetrable to microorganisms and which separates an intermediate space between the neck part and the bone screw from a space located coronally to the neck part.
  • the joint between the neck part and the definitive or provisional tooth crown is preferably below the edge of the gums and above the edge of the jawbone and in any case in an area of the oral cavity exposed to the oral flora.
  • Such joints although made very precisely, are not completely sealed for Mifeoorganisrnen as long as they are not cemented. Since this joint is not cemented in one healing phase, it can be assumed that the joint space between the neck part and the crown is colonized by microorganisms during the healing phase of the implant. However, if the neck part is an impenetrable wall for the microorganisms, they cannot get into the joint space between the neck part and the bone screw.
  • the bone screw advantageously has a central, conical recess in the
  • a cone is formed apically in the seating surface on the neck part, which can interact with this conical recess in a self-locking manner.
  • This conical connection can be frustoconical.
  • the interacting concave or convex truncated cones can, however, also be regular multiples. This allows the cone to be inserted into the bone screw in a rotational position selected from a plurality of possible rotational positions.
  • the conical depression can also form a polygonal truncated cone, for example with an octagonal or hexagonal cross section, in which a circular cone-shaped cone is then inserted in a clamping manner.
  • the recess can serve as a receptacle for a screwing-in tool, and the neck part can nevertheless be inserted into the bone screw in any position.
  • a screw connection is preferred here.
  • the neck part therefore preferably has an internally accessible internal thread in a blind hole.
  • a secondary part, as the basis of a crown, or a crown can be screwed directly onto this.
  • the separation of the implant screw and neck part in one plane, which comes to lie within the jawbone, has the advantage that the outline of the neck part can be designed to deviate from a circle in a section perpendicular to the implant axis.
  • the bone screw can be screwed into the bone as deeply as is necessary for an optimal height with respect to the bone edge. , -
  • the rotational position is only important if the neck part can be inserted into the bone screw in a defined number of relative positions. If the neck part is anchored via a circular truncated cone and there are no other position grids, the neck part can be inserted into the bone screw in an infinite number of positions, which is why the bone screw can be set in any rotational position.
  • the neck part can therefore be in any desired
  • the neck part can therefore have an outline deviating from a circle. If the outline of the neck part in a section perpendicular to the implant axis deviates from a circle, this has the advantage that the tooth crown can be given a very near-natural basis.
  • the tooth shape does not have to be achieved based on a circle.
  • the tooth crown can therefore already have a natural shape when it is connected to the neck part emerging from the bone. This is particularly desirable for the front teeth, which unite at their base have a triangle approximate cross section. For molars and premolars, the base can be designed more like the rectangle.
  • the outline of the neck part advantageously projects beyond the outline of the bone screw in regions that are essentially opposite one another.
  • an outline can be achieved at the base of the tooth crown, which is modeled on the outline of a natural incisor.
  • These opposite regions of the neck part, which project beyond the outline of the implant screw, are preferably connected to one another by a slightly curved line.
  • This slightly curved line is based on the outer curvature of an incisor, for example. At a single point it runs tangentially to the outline of the bone screw.
  • the cantilevered areas are connected to one another in a line arrangement, which line arrangement is essentially tangential to the outline of the bone screw at two points. Between these two points, the lines follow the outline of the bone screw.
  • the neck part advantageously has the outline shape of the bone screw in an apical region adjoining the cone. This allows the bone to be milled just a distance from the coronal end of the bone screw. In one area, however, in which the bone can and will be milled, that is, in a coronal area of the neck part, the neck part deviates from this circular outline. There are basically two options for creating a transition between the circular and the non-circular outline.
  • the neck part can be graduated in the transition area.
  • the neck part can also be rounded off in a conical or toroidal manner. This results in a smooth transition.
  • a correspondingly shaped bone milling head is to be used.
  • the shoulder surface of the neck part is essentially shaped in accordance with the course of a bone line or zalin meat line.
  • an implantation tool with a template for insertion into the bone screw and a bone milling cutter interacting with the template for milling out the bone is proposed.
  • the bone cutter is said to be the bone Only mill in an area lying coronal to the bone screw according to the shape of the template.
  • the template is expediently equipped with a cone which fits into the conical recess of the bone screw. It has a shaped head axially opposite the cone, the contour surface of which is designed as a guide surface for a cylindrical milling head of the bone milling machine. So that the milling head can be guided as precisely as possible along the forming head of the template, the milling head has a milling tip and then a cutting-free guide shaft on the milling tip.
  • the guide shaft has a length that corresponds at least to the axial extent of the contour surface of the template. Therefore, when the milling head of the guide shaft is correctly guided, it lies against the template in such a way that the template is not touched by the cutting of the milling tip.
  • the recess from the bone therefore has an outline which lies at a distance around the outline of the template, which distance corresponds to the diameter of the milling tip.
  • the milling head is advantageously guided through the template such that the axis of rotation of the milling head is displaced in parallel.
  • the guide surface on the molding head for example, to be conical, so that the milling is conical.
  • the milling tip can also deviate from a cylindrical shape, so that the milling out of the bone can be adapted to an advantageous neck shape.
  • a measuring gauge for an endosseous implant is also proposed, in which the shoulder surface of the neck part is essentially shaped in accordance with the course of a bone line or gum line.
  • This measuring gauge has a cylindrical measuring body for sinking into a bore in a jawbone, and on the measuring body a first scale for determining the depth of the borehole or the bone screw to be used, and a second scale for determining the bone line and gum line or the shoulder line of the neck part.
  • the second scale is expediently formed at the lower end of the first scale.
  • the invention also relates to a set for the implantation of an endosteal dental implant and separates the bone screw from a space located coronally to the neck part.
  • the set advantageously also includes a template and a milling head.
  • the set advantageously also includes a measuring gauge with two different scales on a preferably cylindrical measuring body.
  • FIG. 1 shows a longitudinal section through a dental implant of an incisor anchored in a jaw bone with a bone screw, neck part, secondary part and tooth crown.
  • Fig. 2 shows in perspective a neck part with a circular outline.
  • 3 shows a top view of the neck part according to FIG. 2.
  • FIG. 4 shows in perspective a neck part with an outline that deviates from a circle.
  • FIG. 5 shows a top view of the neck part according to FIG. 4.
  • Fig. 6 shows a plan view of an alternative neck part with an outline that deviates from a circle.
  • Fig. 7 shows a longitudinal section through an implanted bone screw with attached template and milling head. 8 shows a top view of the template according to FIG. 7.
  • FIG. 9 shows a longitudinal section through an implanted bone screw with an alternative template and milling head. 10 shows a plan view of the template according to FIG. 9.
  • 11 shows a view of a measuring gauge in a position for measuring the borehole depth.
  • 12 shows a view of a measuring gauge in a position for measuring the gum line / bone line.
  • a dental implant 11 according to the invention is shown in FIG. The following are shown in the axial direction, one after the other or cut one above the other: a bone screw 13, a neck part 15, a secondary part 17 with a fastening screw 19, and a crown 21.
  • the dental implant 11 formed therefrom has a part arranged in the bone 23, consisting of a bone screw 13 and neck part 15.
  • the apical end of the neck part 15 protrudes from the bone 13 and ends in the region of the gums 25.
  • the bone screw 13 has a thread 27 which cuts into the bone 23 on its cylindrical outer surface. This outer surface is equipped in a known manner with a surface which promotes osseointegration.
  • the bone screw 13 is provided with an engagement shape (not shown) for a tool for screwing in.
  • the bone screw 13 has at its coronal end a rotationally symmetrical edge portion of the joining surface 31.
  • the rotational symmetry is formed in relation to the implant axis 33, which coincides with the screw axis.
  • a recess 29 which tapers conically towards the tip of the bone screw 13 is formed centrally in the joining surface 31.
  • This recess 29 has the surface of a circular truncated cone with an angle suitable for a cone clamping.
  • the neck part 15 has an apical cone 35 in the form of a circular truncated cone. This cone 35 has the same angle as the recess 29 and is designed to be able to be clamped in the recess 29.
  • the shoulder surface 39 should be able to connect the crown 21.
  • the shoulder surface 39 can be shaped to match a bone progression line, since the neck part can be inserted into the depression 29 in any desired orientation in the axial direction.
  • the neck part 15 may have a circular cross section (FIGS. 2 and 3) or a cross section deviating from a circle (FIGS. 4 and 5).
  • the neck part 15 forms a barrier for microorganisms. It is therefore formed without a " continuous opening between the shoulder surface 39 and the seating surface 37. From the outside of the ' neck part 15, the surface is divided into a coronal edge 41 and an apical stem 43.
  • the coronal edge 41 is polished so that the surface is hygienic
  • the apical stem 43 is provided with a surface which promotes osseointegration
  • the boundary line 45 between these two surface areas is designed to approximate the course of the bone at the edge of the bore. Therefore, the access for microbes to a space between the bone screw 13 and the neck part 15 is hermetically sealed. Inside the implant, access through the body of the neck part 15 is prevented, on the outside the bone 23 grows together with the implant, so that the body's own defense mechanisms prevent microorganisms from penetrating into the inside of the bone.
  • the joint between the shoulder surface 39 and the crown can therefore be colonized bacterially, without there being any danger to the durability of the prosthesis.
  • the neck part 15 has a receptacle 47 for a secondary part 17.
  • This receptacle 47 is designed as a cup-shaped depression which is surrounded by the shoulder surface 39.
  • a blind hole 49 with an internal thread is formed approximately in the center of this receptacle 47.
  • This blind hole 49 can extend into the cone 35.
  • its top view is not circular, but has the outer contour of a natural tooth in the region of its base surrounded by gums 25. Such a neck part 15 is shown in FIG.
  • the shoulder surface 39 is slightly curved along a buccal front side and forms a front which is significantly wider than the diameter of the bone screw 13. From the two end points of the front side, the shoulder surface develops orally coming together to form a triangle with rounded corners. The dimension from the buccal base side of the triangle to the oral tip corresponds to the diameter of the bone screw 13.
  • the neck part 15 thus shaped can only be inserted into the bone if the bone corresponding to the neck part is excluded in the regions of the bone screw projecting beyond the contour. This removal of the bone can, as is explained in more detail below, be carried out using a milling cutter with the aid of a template.
  • the stem of the neck part 15 advantageously has a circular cross section in an apical region and subsequent to the cone. This therefore fits into the hole made in the bone 23 for the bone screw 13.
  • the neck part 15 deviates from the circular cross-sectional shape from.
  • the boundary line 45 between the osseointegrative and the hygiene-friendly surface lies on the coronal area of the trunk.
  • a rib 51 (FIG. 4) can be provided on the apical side of the projection of the coronal region of the trunk, which cuts into the bone 23 when the neck part 15 is inserted.
  • the template 53 has a cone 55, a support plate 57 thereon, and a support pillar 59 rising therefrom.
  • a shaped head 61 is formed on the support pillar 59.
  • the shaping head 61 determines the outline of the milling.
  • FIG. 7 also shows a milling head 63 with a milling tip 65, a guide shaft 67 connected to the milling tip, and then a guide plate 6.
  • the depth of the recess is determined by the distance between the apical surface of the support plate 57 and the coronal surface of the forming head 61 on the one hand and the length of the milling head 63 between the guide plate 69 and the tip of the milling tip 65 of the milling head 63, the outline shape 73 of the recess is determined (FIG. 8).
  • the guide shaft 67 can have a different diameter than the milling tip 65.
  • the distance of the knuckle contour outline from the forming head is then given by the sum of the two radii of the milling tip and the guide shaft.
  • Figures 9 and 10 show an alternative template. This template 75 also has an engagement form for engagement with the bone screw 13.
  • This engagement form is again shown as a cone 55 and support plate 57, but could also be designed differently. Ascending from the support plate 57 is a central wall 77, which supports a shaped disk 79. An inner contour 81, which determines the outer shape of the recess in the bone, is recessed in the shaped disk 79. Depending on whether the diameter of the milling tip 65 and guide shaft 67 of the milling head 63 are the same or different, the inner contour corresponds exactly to the desired outer shape or is smaller or larger by the difference in the radii. Since the middle wall 77 extends into the inner contour 81, the milling head cannot be guided all the way round.
  • a measuring gauge 83 also belongs to the endosseous dental implant 11, the milling head 63 and the template 53 or 75.
  • the measuring gauge 83 is a cylindrical rod with a rounded tip, which is shaped according to the drilling base of a hole for the bone screw.
  • the measuring gauge 83 is provided with two different scales * .
  • the drilling depth can be measured on a first scale.
  • the bore can therefore be deepened based on the measurement. However, it can also be read directly on the scale which bone screw 13 is to be used. In the example according to FIG.
  • the lowest mark is 4 mm, the next 5, therein 6 and 7 mm.
  • the screw to be selected in the example is therefore 5 mm in length.
  • a second scale can be used to read the amount by which the buccal edge of the bone is lower than the oral edge of the bone. It is therefore immediately possible to determine which type of neck part 15 should be selected.
  • the width of the front of the neck part can be measured in advance on the natural tooth or estimated on the basis of the size of the tooth gap. The height difference between the oral and buccal bone edge therefore gives the second decisive measure for the selection of the suitable neck part 15.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial 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)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne un implant dentaire (11) énossal comprenant une vis osseuse (13) qui présente une surface de contact (31) coronale, ainsi qu'une partie de col (15) pouvant être placée par une surface de positionnement (37), sur la surface de contact (31) de la vis osseuse (13). Ladite vis osseuse (13) et la partie de col (15) sont disposées coaxialement à un axe d'implant (33). La surface de contact (31) et la surface de positionnement (37) sont en correspondance mutuelle, de sorte qu'un assemblage de la partie de col (15) et de la vis osseuse (13) soit possible dans une pluralité de positions tournées les unes par rapport aux autres, autour de l'axe de l'implant (33). La partie de col (15) comporte, en partie coronale, une surface d'épaulement (39) à laquelle une couronne dentaire (21) peut être raccordée. La partie de col (15) forme une paroi imperméable aux micro-organismes, qui sépare un espace intermédiaire entre la partie de col (15) et la vis osseuse (13), d'un espace situé en partie coronale de la partie de col (15). Le joint entre la vis osseuse (13) et la partie de col (15) peut de ce fait se trouver à l'intérieur de l'os (23), ce qui permet d'insérer la partie de col (15), indépendamment de la position rotative de la vis osseuse (13), dans une orientation voulue, dans la vis osseuse (13). La partie de col (15) peut ainsi, vue de dessus, être reproduite sur la base d'une dent naturelle, en s'écartant d'un contour circulaire.
PCT/EP2004/053269 2003-12-03 2004-12-03 Implant dentaire WO2005053565A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04804678A EP1689316A2 (fr) 2003-12-03 2004-12-03 Implant dentaire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2058/03 2003-12-03
CH20582003 2003-12-03

Publications (2)

Publication Number Publication Date
WO2005053565A2 true WO2005053565A2 (fr) 2005-06-16
WO2005053565A3 WO2005053565A3 (fr) 2005-11-10

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PCT/EP2004/053269 WO2005053565A2 (fr) 2003-12-03 2004-12-03 Implant dentaire

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EP (1) EP1689316A2 (fr)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413883A1 (de) 1974-03-22 1975-09-25 Werner Lutz Koch Enossales implantat zur befestigung von festsitzendem zahnersatz
DE3413578A1 (de) 1984-04-11 1985-10-24 Werner Lutz 3073 Liebenau Koch Enossales implantat zur befestigung von festsitzendem zahnersatz
US20030031982A1 (en) 2001-08-10 2003-02-13 Abarno Juan Carlos Split implant for dental reconstruction

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2505914C3 (de) * 1975-02-13 1980-04-10 Werner Lutz 3073 Liebenau Koch Vorrichtung zum paßgenauen Fräsen eines Schlitzes in einem Kieferknochen sowie Schablone zur Herstellung eines zylindrischen Loches im Bereich eines solchen Schlitzes
DE9012548U1 (de) * 1990-09-01 1990-12-06 Klaus, Gerold, 7832 Kenzingen Vorrichtung zum Befestigen von Zahnersatz an einem Implantat
US5431567A (en) * 1993-05-17 1995-07-11 Daftary; Fereidoun Anatomical restoration dental implant system with interlockable various shaped healing cap assembly and matching abutment member
JP2001508686A (ja) * 1997-01-18 2001-07-03 ディロ，インコーポレイテッド 改良型細菌防止シールを有するロック用テーパ取付け具
WO2001049199A2 (fr) * 2000-01-04 2001-07-12 Straumann Holding Ag Implant dentaire intra-osseux et ensemble combine
AU2329300A (en) * 2000-01-24 2001-07-31 Sang-Kohn Chang Dental implant system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413883A1 (de) 1974-03-22 1975-09-25 Werner Lutz Koch Enossales implantat zur befestigung von festsitzendem zahnersatz
DE3413578A1 (de) 1984-04-11 1985-10-24 Werner Lutz 3073 Liebenau Koch Enossales implantat zur befestigung von festsitzendem zahnersatz
US20030031982A1 (en) 2001-08-10 2003-02-13 Abarno Juan Carlos Split implant for dental reconstruction

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EP1689316A2 (fr) 2006-08-16
WO2005053565A3 (fr) 2005-11-10

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