DE2812250A1 - USE FOR USE IN ODONTOSTOMATOLOGY, IN PARTICULAR FOR FASTENING CROWNS, BRIDGES, ETC - Google Patents

Description

18.578 / 9 4-0 / kr 17th March 1978

Ebauches SA.

1, faubourg de l'Hopital,

2001 Neuchätel, Switzerland

Use for use in odontostomatology, especially for fastening crowns, bridges or the like

The invention relates to an insert according to the preamble of claim 1.

The difficulties involved in inserting these into the bone as a carrier for a single, partial or complete denture serving missions are well known.

From US-PS 3,577,853, DE-OS 19 59 055 and FE-PS 2,133,656 such inserts are known where there is it is necessary to create a wide gap (approx. 3 to 4 mm thick) in the jawbone for the insertion of the insert, whereby this gap only heals up after a relatively long period of time (over 14 days) and can cause serious complications.

The invention is therefore based on the object of designing an insert of the type in question so that it can be used easily and the healing process proceeds quickly and without complications.

809842/0635

According to the invention, this object is achieved with the features of the identifier of claim 1 solved. The use according to the invention enables quick and flawless insertion, with the wound scarring and thereby within five to six days Infections and complications are avoided.

Expedient developments of the invention are set out in the subclaims specified.

Further advantages, details and features of the invention emerge from the following with reference to the accompanying drawing ensuing description of several exemplary embodiments. In the drawing show:

FIG. 1, on a greatly enlarged scale (10: 1), shows a front view of an insert with two parallel slats and only one pen holder according to the invention,

Figure 2 is a plan view of the insert of Figure 1,

FIG. 3 shows a modification of the insert of FIG. 2 in a plan view, with the two parallel lamellae are in their extended position before bending,

Figure 4 · the insert of Figure 3, with the two slats are bent parallel to each other and the pin is provided with a thread before being screwed on Pen holder is shown

FIG. 5 shows a cross section through a jawbone into which an insert according to the invention with two lamellae is inserted is,

809842/0635

Figure 6 is a side view of an insert according to the invention with two lamellas and two pin holders for attaching a bridge,

Figure 7 is a plan view of the insert of Figure 6 ',

FIG. 8 shows a side view of an insert according to the invention with only one lamella which is inserted into one in the jawbone incised slot is inserted,

FIG. 9 shows a plan view of the insert from FIG. 8.

As shown in Figures 1 and 2, the insert has two parallel ones Platelets "or lamellas 1 and 1 ', which at the bottom have an

'lower

have an approximately semicircular profile. The slats have / openings 4, 5 »6, through which the osteoblasts of the newly formed Bone part 9 (FIG. 5) grow through after a few days and anchor the insert in this way. Furthermore, the slats 1 and 1 'have central openings 7, 8 (FIG. 1) through which the osteoblasts of the cortical cell layer 11 (FIG. 5) penetrate. Furthermore, upper openings 13, 14, 15, 16 (FIG. 2) are provided in the supercortical plate 17 of the insert in order to facilitate the renewal of the fibers of the mucous membrane (of the gums) 12 (FIG. 5). enable.

The supercortical plate 17 is firmly connected to a pin holder 18, 19 which has a thread 19 at the top, onto which a pin 20 can be screwed with a threaded hole 21.

A threaded hole 22 in the pin is used to attach a crown or bridge with the help of a screw so that the insert can be inspected.

809842/063

The two parallel slats 1 and 1 'are at a distance "d" arranged from each other, which corresponds to the bone shape of the jaw of the patient in the area in which the insert is to be used and other functional properties will.

Instead of just one pen holder 18, 19, two such pen holders can also be provided, as shown in FIGS. 6 and 7 is.

FIG. 3 shows a modification with regard to the shape and number of the central openings designated in FIG. 1 by 7 and 8.

In Figures 8 and 9, a second embodiment is shown, which for insertion in a dental arch with a very narrow ridge of the
Dental cavity bone is suitable and which has only a single lamella 1.

In this case too, the lamella 1 has lower openings 4, 5 »
6, with the help of which the use due to the new formation of the
Osteoblasts of the spongy part of the bone designated by 10 in FIG. 5 are fixed; Furthermore, the lamella 1 has central openings 7 »8, through which the insert is anchored due to the formation of the peripheral cell layer. Furthermore are
Openings 13, 14, 15, 16 are provided in the supercortical plate 17 in order to enable the new formation of the mucous membrane 12.

The lamella 1 forms with the plate 17 and with the thread 19 provided pen holder 18, 19, on which the pin 20 (Figure 4) is to be screwed, one piece.

In Figure 8, a semicircular gap is designated by 25 to

809842 / 063S

the slats 1 and 1 '(Figures 1 and 2) or the slat 1 (Figures 8 and 9). This gap is made using extremely thin milling cutters.

The following are examples for use and for Dimensions selected by the milling cutter.

In the case of Figures 1 and 2, the slats 1 and 1 'have one Strength of 0.5 nm and are, as already mentioned, from spectrographic pure tantalum (purity "99.9999% 'ί produced e.g. by means of anodic oxidation, is passivated, so that repulsion is completely avoided and biological compatibility is guaranteed.

The distance "d" between the two slats can be between 2 and 3 mm depending on the thickness of the dental arch.

The height of the base 18 of the pen holder can be 1.5 mm, the height of the thread 19 2.5 mm and the total height of the pen holder 4.5 mm, but can also be reduced to 1/3 in order to completely close off the insert after suturing the mucosal flap Allow under the gums to heal completely while avoiding any connection with the oral cavity.

The pen holder is preferably made in three different heights, from 2-3 mm to 4-4.5 mm. The dental surgeon can but also, if necessary, adjust the gums to just one height. Considering the design of the insert and the biological Compatibility with the material used (passivated tantalum) can be sewn, with the thread 19 for the pin can stick out, as the small diameter of the thread 19 (2 mm) and the rapid healing of the bone injuries Prevent infiltration.

809842/0635

Due to the fact that the two lamellae 1 and ^{1f are} very thin and made of spectrographically pure and passivated tantalum, the lower (4, 5, 6), middle (7, 8) and upper ( 13, 14, 15, 16) openings the bony and fibrous tissue can grow through quickly.

In the case of only a single lamella 1 (FIGS. 8 and 9), with regard to sufficient mechanical resistance, the Material thickness of the lamella can be increased to 0.8 mm.

The radius D1 of the milling cutter with which the individual cuts in the Dial arches are designed to accommodate the corresponding lamella, can e.g. be of the order of 9 mm.

Care must be taken to ensure that this radius is approx. 0.25 mm is greater than the radius D2 of the lamella in order to facilitate the introduction of the latter into the slot. Conversely, the strength is said to be of the milling cutter must be dimensioned so that the width of the slot milled with it is 2-3 / 100 mm less than the thickness of the lamella, so that the introduction of the lamella overcoming a weight. Resistance and taking advantage of the elasticity of the dental arch takes place in order to increase the initial stability.

Both the insert with two slats and the one with a single one Lamella including the supercortical plate 17 and the pin holder 18, 19 can advantageously be made in one pressing process passivated tantalum can be produced in such a way that they are a single Piece.

The pen holder 18, 19 can protrude from the plate 17 at right angles or "be inclined up to 9 ° with respect to this in order to enable a perfect conclusion.

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Claims (12)

18.578 / 9 40 / kr 17th March 1978 Ebauches SA. ■ 1, faubourg de l'Hopital, Neuchatöl, Switzerland Patent £ Schutzr} claims 1./Einsatz for use in Odontostomatologxe, in particular - "^ special for fastening crowns, bridges or the like, characterized by at least one lamella (1) which can be inserted into a corresponding semicircular slot milled into the dental arch, at least _{a supercortical stop plate (17) 9,} connected to the lamella (1) and lying above the dental arch, and by at least one pin holder (18, 19) for receiving a pin (20) on which a crown, bridge or the like can be fastened ; wherein the lamella (1) has lower openings (4, 5 - 6) for the osteoblasts of the bony or spongy part of the bone to grow through and middle openings (7, 8) for the osteoblasts of the cortical layer to grow through and in the supercortical Stop plate (17) openings (13, 14, 15, 16) are provided for the regeneration of the mucous membrane fibers. 2. Use according to claim 1, characterized in that the © lamella (1) is semicircular. 809842/0635 3. Use according to claim 1 or 2, characterized in that two parallel slats (1, 1 ') are provided. 4-, insert according to claim 3, characterized in that the distance is chosen between the two parallel lamellae according to the thickness of the bony part of the dental arch. 5. Use according to one of the preceding claims, characterized in that that the pin holder (18, 19) at its upper end with a thread (19) for screwing on the pin (20) is provided. 6. Use according to one of the preceding claims, characterized in that that it is made in one piece with the pen holder (18, 19) in a pressing process. 7. Use according to one of the preceding claims, characterized in that that the pen holder (18, 19) is arranged at right angles to the supercortical plate (17). 8. Use according to one of claims 1 to 6, characterized in that that the pen holder (18, 19) is arranged inclined to the supercortical plate (17). 9- insert according to one of the preceding claims, characterized in that that the pin (20) at its free end has a threaded hole (22) for a screw connection with the crown, Bridge or the like. Has. 10. Use according to one of claims 5 to 9, characterized in that that the height of the pen holder (18, 19) and its thread (19) according to the thickness of the gums 809842/0635 naohtrliailoh is selected that the insert including the pen holder (18, 19) after sewing the mucous membrane flap completely in Gums is enclosed without any connection with the oral cavity. 11. Use according to one of the preceding claims, characterized in that that it consists of spectrographically pure and passivated tantalum. 12. Use according to one of claims 1 to 10, characterized in that that it consists of spectrographically pure tantalum passivated by anodic oxidation. -1-. oeee ehe 1 to 12, characterized in that by means of a that from one or two parallel, rotating disk milling cutters whose diameter is a little larger than that the essentially semicircular profit of the lamella (s) of the insert, while the thickness is 2 ^ 5/100 mm less than that of the lamella (s) of the insert, one or two semicircular, parallel slots cut in the area of the dental arch into which the insert is inserted, and that the tooth fibers are then sewn in such a way that the insert with dem StiftehalterjvCie, 19) completely enclosed in the gum so that any connection with the oral cavity is rented, and that afterwards the pen holder is exposed and aar the pen is attached to him, the arrangement then being --— aglioh — d 809842 / 063B