RU2333733C1 - Bridge denture for restoration of absent second premolar and/or first tricuspid by direct method - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to medicine, in particular to prosthetic dentistry, and can be used for bridgework in a case of partially edentulous. The bridge denture for restoration of the absent second premolar and/or the first tricuspid by the direct method contains three dental bars aimed at placing in cavities, and made on occlusal surface and at a level of equator of labial and oral surfaces of the retainers. Micromesh is fixed on two parallel dental bars at a level of equator with formation of one cavity with mesh or on three dental bars by winding and formatting of three cavities with mesh and at least one artificial tooth made of composite material and formed on the dental bars and mesh. The dental bars are made in the shape of rectangular section with the opportunity of their disposing in the cavities at a level of cementoenamel junction of the retainers.

EFFECT: strength enhancement under mastication load on an artificial tooth made of composite material by means of its armouring.

2 dwg

Description

The invention relates to medicine, in particular to orthopedic dentistry, and can be used for prosthetics in case of partial adentia.

An adhesive bridge for restoration of an absent premolar is known from the prior art, comprising a flat beam fixed in grooves on the occlusal surface of the abutment teeth and an artificial tooth (Patent UA No. 39316 A, 06/15/2001).

A bridge is known from the prior art, including two beams of wire with a diameter of 1.0-1.2 mm, located in two cavities with a depth of not more than 0.5 thickness of dentin, made at the level of the equator of the tooth, the placement of two parallel reinforcing beams of the bridge in them from a wire with a diameter of 1.0-1.2 mm, and an artificial tooth made of composite material modeled on beams (Clinical Dentistry, No. 4, 1997, Borovsky V.E. “Instant replacement of a single missing tooth”, p.16- eighteen).

A method of manufacturing a reinforcing beam-adhesive bridge prostheses in the absence of premolars includes the formation of cavities on the vestibular and oral surfaces and grooves on the occlusal surface of the abutment teeth, the manufacture and fixation of three reinforcing beams of flattened wire with the subsequent final restoration of the missing tooth using composite materials (publ. Application No. 2003103123 A, 08/10/2004).

Known bridges do not have sufficient strength due to the insufficient reinforcement of an artificial tooth made in a direct way from a composite material directly in the oral cavity.

The technical result of the invention is to increase the strength under the influence of chewing loads on an artificial tooth made of composite material due to its reinforcement.

The technical result is achieved due to the fact that the bridge for restoration of the absent second premolar and / or first molar using the direct method contains three beams for placement in cavities made on the occlusal surfaces and at the equator level of the vestibular and oral surfaces of the supporting teeth, a fine-mesh mesh fixed on two parallel beams located at the equator to form one plane with a grid, or on three beams by winding with the formation of three planes with a grid minutes, and at least one artificial tooth of a composite material formed on the beams and grid, the beams are made of rectangular cross section profile to be positioned in the cavities at the level of the enamel-dentin border abutment teeth.

The essence of the claimed invention is illustrated by a graphic image, where in Fig.1 shows a bridge with a grid on two beams, in Fig.2 - with a grid on three beams.

A bridge for restoring the missing second premolar and / or first molar using the direct method contains three beams 1-3. Beams are made of a rectangular cross-sectional profile. One beam 1 is intended for location in cavities made on the occlusal surfaces of the abutment teeth. Two beams 2 and 3 are located at the equator level of the vestibular and oral surfaces of the supporting teeth. The fine mesh 4 is located on two parallel beams 2 and 3 with the formation of one plane. The fine mesh 4 can be located on three beams by winding it on the beams. The ends of the mesh in both cases are fixed with a wire or thread.

A bridge is made as follows.

On the occlusal, vestibular and oral surfaces of the supporting teeth with boron, cavities are formed under the beams. Cavities form at the level of enamel-dentin border of the abutment teeth. On the vestibular and oral surfaces of the cavity form at the level of the equator. Beams are cut from the workpiece of the required length. All three beams are sequentially fixed on the supporting teeth with a composite material. The fine mesh is cut with scissors of the required width and length depending on the size of the dentition defect (one or two teeth). The fine-mesh mesh is fixed on two parallel beams located at the equator to form one plane with the mesh, while the mesh is tied to two beams with thread or wire. The fine mesh is fixed on three beams by winding it with the formation of three planes, while the ends of the mesh are connected to each other and one of the beams, for example, on an occlusal surface. One or two artificial teeth are formed on beams and a grid of composite material in a well-known manner.

Claims (1)

Bridge prosthesis for restoration of absent second premolar and / or first molar by direct method, containing three beams for placement in cavities made on occlusal surfaces and at the equator level of the vestibular and oral surfaces of the abutment teeth, a fine mesh fixed on two parallel beams located at the level equator with the formation of one plane with a grid, or on three beams by winding with the formation of three planes with a grid, and at least one artificial tooth made of composite material formed on the beams and the mesh, while the beams are made of rectangular cross-sectional profile with the possibility of location in the cavities at the level of the enamel-dentin border of the supporting teeth.

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