RU2724189C2 - Upper canine prosthesis and method of its installation - Google Patents

Abstract

FIELD: veterinary medicine.SUBSTANCE: group of inventions refers to veterinary science, in particular to orthopedic dentistry, and is intended for use in upper canine replacement by tabs. Animal's canine prosthesis contains a root and crown parts made as a single part. Coronal part is anatomically identical to the shape of a healthy canine. Root part is made in the form of a metal rod corresponding to the shape and size of the canine root canal located at an acute angle to the anterior surface of the jaw bone. Length of the root portion of the prosthesis to be immersed in the bore of the canine root canal is less than the entire length of the canine canal. In the crown part of the prosthesis, a recess is formed to shape a projection on the whittled part of the canine. Prosthesis is made by casting. Outer surface of prosthesis is ground. To install a canine prosthesis, an endodontal preparation of the canine is carried out, an impression is made, a prosthesis is made from the impression. Canine is whittled, the canine canal is bored at an acute angle to the anterior surface of the jaw bone at a depth less than the entire length of the canine canal, the root portion of the prosthesis is directly inserted into canine canal. Check prosthesis closure with antagonist teeth and the prosthesis is fixed on a canine. Prosthesis in the canal and on the whittle of the canine is fixed with dental cement. On whittled part of canine lug is made, and in crown part of prosthesis groove is formed for it.EFFECT: inventions enable to completely restore functions of partially destructed teeth, as well as higher reliability and durability of the prosthesis.7 cl, 3 dwg

Description

The invention relates to the field of veterinary medicine, in particular to orthopedic dentistry, and can be used for prosthetics of upper canines of dogs with tabs.

The prior art ARTIFICIAL DENTAL CROWN [RU 151902 U1, Publ .: 20.04.2015], containing the outer and inner surfaces having a certain thickness, on the inner surface of the crown is made a monolithic protrusion of the same material as the crown, the protrusion is located along the longitudinal the axis of the tooth, characterized in that the protrusion has the form of an insert, and its end part facing the root of the tooth is made in the form of a hemisphere, and the walls of the tab are parallel to each other or taper towards the roots of the teeth at an angle of 2-3 ° relative to the longitudinal axis of the tooth .

The disadvantage of the analogue is the relatively short service life due to insufficient margin of safety due to the attachment of the crown only on the surface of the tooth.

Also known in the prior art is a METHOD FOR PROSTHESIS OF DENTALS BY NON-REMOVABLE ORTHOPEDIC CONSTRUCTIONS WITH PRESERVATION OF VITALITY OF PULPAS [“Odinotreparation for orthopedic designs of dentures”, ed. Arutyunova S.D., Lebedenko I.Yu., Moscow: Practical Medicine, 2007, p. 63], which includes the ododentical preparation of abutment teeth for fixed orthopedic constructions, casting, production of temporary provisional crowns for prepared teeth, application of provisional provisional crowns on abutment teeth with a therapeutic agent for the prepared surface of the tooth stump, production of a prosthesis cast, removal of provisional abutment teeth crowns, applying a prosthesis to supporting teeth and fixing on them.

The disadvantage of this method is the relatively low reliability and fragility of the crown, due to the fact that the crown is installed on the prepared tooth without implanting it into the root of the tooth.

Known DENTAL IMPLANT HASANOVA, DEVICE, COMPOSITION, METHOD OF ITS MANUFACTURE AND INSTALLATION [RU 2271172 C1, Publ.: 10.03.2016], containing the root, crown part, characterized in that the root part is made in the form of a metal rod with notches along the entire surface of any cross-sectional shapes, with two biocomposite masses deposited on it in the region of the root part in a volume corresponding to the shape and size of the root of the extracted tooth, and the crown part, including the upper portion of the metal rod, is made with a crown mounted on it, corresponding to the shape and size of the removed crown tooth, while the first biocomposite mass contains a powder - suspended grafted copolymer of methacrylic acid methyl ester and fluororubber - 33%, the liquid - polymer-oligomer composition - 67% in a ratio of 1: 2, and the second biocomposite mass contains powder suspended grafted copolymer of methacrylic acid methyl ester and fluororubber - 25%, liquid - polymer-oligomer composition - 50% and synthetic hydroxyapatite Ca10 (PO4) 6OH) 2 - 25% in a ratio of 1: 2: 1. A method for installing a dental implant involves installing it immediately after tooth extraction into the socket or delayed 2-3 weeks after tooth extraction, or remotely after the tooth socket has completely healed, splinting with a 0.6 mm diameter composite orthodontic wire structure consisting of individual arcs for adjacent teeth and the implant in the middle with protrusions of arbitrary shape, which provides reliable fixation to the corresponding neighboring teeth using a composite mass, and the implant itself is a self-hardening plastic with curved ends in the form of interdental spaces.

Dog prosthetics is performed in a similar manner (see: https://pikabu.ru/story/protezirovanie_zubov_u_sobak_5189010; published: 07/13/2016).

The solution is chosen for the prototype.

In the prototype, the prosthesis of the canine of the animal contains the root and crown parts made in the form of a single part, while the crown part is made anatomically identical to the destroyed part of the canine.

The main technical problem of the prototype is the high invasiveness of tooth restoration, due to the need to remove the root of such a large tooth as the root of the canine, to install the implant and to enamel the enamel of healthy teeth for bridging with adjacent teeth, which leads to thinning and increased sensitivity of neighboring teeth.

The objective of the invention is to eliminate the disadvantages of the prototype.

The technical result of the invention is the complete restoration of the function of a partially destroyed canine, as well as improving the reliability and durability of the prosthesis.

The specified technical result is achieved due to the fact that the prosthesis of the canine of the animal, containing the root and crown parts, made in the form of a single part, while the crown part is made anatomically identical to the destroyed part of the canine, characterized in that the root part is made in the form of a metal rod corresponding to the shape and size of the intra-root canal of the root of the tooth, located at an acute angle to the plane of the jaw bone, and the immersion of the root of the prosthesis in the area of the prepared canal of the canine is less than the entire length of the canine canal.

In particular, the prosthesis is made by metal casting.

In particular, the outer surface of the prosthesis is polished.

The specified technical result is achieved due to the fact that the method of installing the prosthesis of the canine of the animal, including ododent preparation of the canine, impression taking, making the impression of the prosthesis, characterized in that when the odontic preparation is performed oblique cut of the canine on which the prosthesis is installed, for which the canal of the canine is drilled at an acute angle to the plane of the jaw bone to a depth of not more than the root of the canine root, the root part of the prosthesis is inserted directly into the canine canal, the closure of the prosthesis with antagonist teeth is checked, and the prosthesis is fixed on the canine.

In particular, the prosthesis is fixed with dental cement.

Preferably, a protrusion is made on the sharpened part of the coronal part of the canine, and a recess is formed in the coronal part of the prosthesis.

Preferably, during odontopreparation of the canine canal, a ledge is formed at the end of the prepared canal.

Brief Description of the Drawings

In FIG. Figure 1 shows the installation of a fang prosthesis, where A is a jaw with a healthy fang, B is a jaw with a broken fang, C is a jaw with a sharpened fang, D is a jaw with a drilled canal at the root of the canine, D is a process for installing a prosthesis, E is an installed prosthesis.

In FIG. 2 shows a close-up of the prosthesis installation process.

In FIG. 3 shows a photo of a practical implementation of the invention in the form of an established prosthesis for a canine in a dog.

The figures indicate: 1 - the root of the prosthesis, 2 - the crown of the prosthesis, 3 - the canine is whole, 4 - the broken canine, 5 - the subgingival root of the canine, 6 - the jaw bone, 7 - stitched canine, 8 - the area of drilling of the canal at the root of the canine , 9 - the protrusion of the canine, 10 - the gum, 11 - the notch, 12 - the ledge.

The implementation of the invention

The prosthesis of the canine of the animal contains the root 1 (see Fig. 1) and the crown part 2, made in the form of a single part by casting. The root part 1 is made in the form of a metal rod whose shape corresponds to the shape of the root canal 5 (see Fig. 2). The crown part 2 is made in the upper part of the prosthesis and is made corresponding to the anatomical shape and size of a part of a healthy whole fang 3 (see Fig. 1A). The broken canine 4 (see. Fig. 1B) is subjected to seaming so that the sewing has the shape of a bevel (see Fig. 1B).

The shape and topography of the lower part of the crown part 2 of the prosthesis are made to coincide with the ground surface 7 of the upper part of the canine. In this case, a protrusion 9 is performed on the sharpened part of the canine, and then a recess 11 is formed under the crown part 2 of the prosthesis. When the recess 11 is planted on the protrusion 9, the strength of the installed prosthesis is enhanced.

The external surface of the prosthesis is sanded or coated with a protective coating.

The prosthesis of the canine of the animal is set as follows.

Before installing the prosthesis, it is made in laboratory conditions. To do this, at the first stage, the mouth of the animal is inspected, an oblique section 7 is made with the formation of the protrusion 9 by grinding the broken canine 4 with the possibility of removing the load from the canine 4 and with the need for direct access to the long canal canal.

Inside the canine formed after the oblique cut 7 (see Fig. 1D), a channel 8 is drilled in the root of the canine 5 at an acute angle to the plane of the jaw bone 6 and the canine is sanitized. Using a special silicone mass, an impression of the channel 8 and the directly tapered canine 7 with the protrusion 9 is obtained for further casting, while the immersion of the root part 1 (see Fig. 1) in the zone of the drilled channel 8 should be less than the entire length of the root of the canine 5.

Next, a gypsum model is made. A wax prosthesis is then simulated. After that, the wax is replaced with metal and the resulting cast prosthesis is treated, polished and ground.

The next step is the fitting of the prosthesis. Grinding of the sharpened canine 7 is carried out for high-quality installation of the prosthesis. Check the closure of the prosthesis with antagonist teeth. The finished prosthesis is immersed with the crown part 2 in the area of the drilled canal 8 of the root of the canine 5, and the notch 11 in the crown part is planted on the protrusion 9 and fixed with dental cement in the mouth of the animal (see Fig. 1E). The fang prosthesis installed in this way (see Fig. 1E) should not differ in shape from the original (see Fig. 1A).

The claimed technical result of the invention is achieved due to the fact that the root part 1 of the prosthesis is made in the form of a metal rod corresponding in shape and size to the intrarooted drilled canal 8 of the root of the canine 5 and a length not exceeding the depth of its root, while the crown part 2 is made anatomically identical to the destroyed part the canine, the slice of which is oblique with the formation of the protrusion 9, and the canal 8 of the canine is drilled at an acute angle to the plane of the jaw bone 6 with the possibility of reliable fixation of the prosthesis and reduce the load on the canine 4.

Thus, the tab is inserted into the tooth from the end, and not like in humans (on top). This provides increased reliability and durability of the prosthesis, a more uniform load on the entire prosthesis when biting. This is due to the fact that the place of a healthy fang fracture is a “weak spot” of the tooth, and if you install a prosthesis by analogy with how people put crowns, the crown will be installed in the same weak spot and the fang crown fracture or de-cementation can quickly happen again tabs.

The claimed invention eliminates this problem by the fact that the prosthesis is installed on an oblique cut of the canine. This oblique slice 7 and with the protrusion - protrusion 9, intersect the "weak spot", which allows you to place part of the prosthesis deeper than the "weak spot" and, in addition, allows you to reduce the load on the prosthesis by the fact that this load lies on the "wedge", which is the crown part 2 of the prosthesis, when it is cemented on an oblique stitched canine 7. All these circumstances provide an increase in the reliability and durability of the prosthesis.

An example of a dog's canine prosthesis set by the described method can be seen in FIG. 3.

Claims (7)

1. The prosthesis of the animal’s canine, containing the root and crown parts, made in the form of a single part, while the crown part is made anatomically identical to the shape of a healthy canine, characterized in that the root part is made in the form of a metal rod corresponding in shape and size to the drilled root canal of the canine located at an acute angle to the front surface of the jawbone, the length of the root of the prosthesis intended to be immersed in the recessed canal of the canine root is less than the entire length of the canal canal. 2. The prosthesis according to claim 1, characterized in that a recess is formed in the coronal part of the prosthesis under the protrusion shape on the sharpened part of the canine. 3. The prosthesis according to claim 1, characterized in that the prosthesis is made by metal casting. 4. The prosthesis according to claim 1, characterized in that the outer surface of the prosthesis is polished. 5. The method of installing the fang of the animal’s fang, including ododent preparation of the fang, impression taking, imprinting of the prosthesis, characterized in that the fang is stitched, then the canal is drilled at an acute angle to the front surface of the jaw bone to a depth less than the entire length of the canine canal, the root part of the prosthesis directly into the canal canal, check the closure of the prosthesis with antagonist teeth and fix the prosthesis on the canine. 6. The method according to p. 5, characterized in that the prosthesis in the canal and on the cut of the canine is fixed with dental cement. 7. The method according to p. 5, characterized in that a protrusion is made on the sharpened part of the canine, and a recess is formed in the crown part of the prosthesis.

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