RU2352287C1 - Method of manufacturing of partial demountable prosthesis at single tooth - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention concerns medicine, namely, orthopedic stomatology and can be used at prosthetics of patients at a single tooth standing on a jaw, in particular a canine, a premolar tooth, a molar tooth, a central incisor. The way includes manufacturing of an artificial crown on a tooth, putting off of a cast from the jaw, manufacturing of a basis with the bite platen, definition of the central occlusion, manufacturing of a metal clasp for the tooth, placing of an artificial teeth, try-in of a wax design of a prosthesis in oral cavities of the patient, replacement of wax basis by plastic, a grinding and polishing of a demountable prosthesis, applying of a ready demountable prosthesis on a jaw. An artificial crown with two patrixes on its proximal surfaces is made on a single standing tooth of the patient. In plastic basis of a partial demountable prosthesis the individually made metal skeleton consisting from metal reinforcing fabric and a metal element with matrixes for placing of patrixes in them of an artificial crown is welded in.

EFFECT: maintenance of good bracing of the partial demountable prosthesis on the jaw at the expense of improvement of mechanical bracing of prosthesis on single standing tooth and appreciable depression of risk of breakage of basis of demountable prosthesis and improvement of its aesthetics.

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Description

The invention relates to medicine, namely to prosthetic dentistry, and can be used for prosthetics of patients with a single tooth (fang, premolar, molars, and sometimes central incisors) on the jaws.

A known method of manufacturing a partial denture on the upper and lower jaw with a single tooth. The method includes the manufacture of an artificial crown on the remaining tooth (sometimes without an artificial crown), the manufacture of a partial removable prosthesis with clamera fixation on the tooth. A partial removable prosthesis is made in compliance with all known clinical and laboratory stages (V.N. Kopeikin, L.M. Demner. Denture technology. - M., Medicine, 1985. - p.206-231).

The prototype of the invention is a method of manufacturing a partial denture with a single tooth, including the manufacture of an artificial crown on the tooth (sometimes without an artificial crown), casting a mold from the jaw, casting a model from gypsum, making a wax base with bite rollers to determine central occlusion, determining the central occlusion occlusions, production of a clasp on a tooth, staging of artificial teeth, fitting a prosthesis design (basis from wax) in the patient’s mouth, replacing the wax basis with plastic, grinding and polishing a removable denture, applying a denture to the jaw (1. EI Gavrilov, AS Shcherbakov. Orthopedic dentistry. - M., 1984. - p. 257-259 and p. 262-276).

The disadvantages of this method:

1) Clamera fixation does not always provide good fixation of a removable denture with a single tooth standing.

2) Often there is a breakdown of the basis of the prosthesis in the area of a lone tooth (the weakest point).

3) Aesthetics are violated (metal clasp is visible).

The technical result, the achievement of which the creation of this invention is directed, is to ensure good fixation of the partial denture on the jaw by improving the mechanical fixation of the denture on a stand-alone tooth and significantly reduce the risk of breaking the basis of the denture, improving the esthetics of the prosthesis.

The essence of the invention lies in the fact that the method of manufacturing a partial denture with a single tooth standing includes making an artificial crown on a tooth, taking a mold from a jaw, making a basis with a bite roller, determining a central occlusion, making a metal clasp for a tooth, setting up artificial teeth, wax fitting the design of the prosthesis in the patient’s oral cavity, replacing the wax base with plastic, grinding and polishing the removable denture, applying the finished denture to the jaw, and an artificial crown with two patricia on its approximate surfaces is made on a patient’s single-standing tooth, an individually made metal frame is welded into the plastic base of a partial removable prosthesis, consisting of a metal reinforcing mesh and a metal element with matrices to accommodate patrons of an artificial crown.

A method of manufacturing a partial denture with a single tooth is as follows. The tooth is prepared under a ceramic-metal or metal-plastic crown, then a silicone impression is taken and the model is cast from super gypsum. Then a crown and a patrician are modeled from wax from its approximate sides. After that, a crown 1 with patrices 2 is cast from the metal (Figure 1 - enlarged). Next, a crown 1 is fitted with patrices 2 in the oral cavity. Then a ceramic or plastic coating is applied to the crown and a finished metal-ceramic or metal-plastic crown with patrices in the oral cavity is tried on (Figure 2). Next, a silicone impression is taken from the jaw along with the crown and the model is cast from super gypsum. The super gypsum model is duplicated into a refractory one. Next, a drawing of the future framework is applied to the refractory model and a wax framework consisting of a reinforcing mesh 5, element 3 with matrices 4 adjacent to the artificial crown from the oral and approximate sides is modeled (Figure 3 is enlarged). The metal frame is cast (Figure 3) and is tried on in the oral cavity along with an artificial crown. Then a wax base is made with a bite roller on the jaw to determine central occlusion. The central occlusion is determined and the basis of the removable wax prosthesis is modeled. When modeling the basis of the prosthesis, the frame is installed in the basis. Next, artificial teeth are placed and the design of the prosthesis in the oral cavity is tried on. Then the wax is replaced with plastic. After this, the crown is fixed with the patricians and the removable denture is placed in the oral cavity on the jaw at the same time (Figure 4). To improve the patrician’s retention, a sleeve from a standard set of plastic bushings is used in the matrix. Patrices with matrices can be taken from attachments of the company Bredent to simplify the work of the dental technician.

When using the proposed invention, vertical chewing pressure through the base of the removable prosthesis should be transmitted mainly to the mucous membrane of the patient’s oral cavity. A tooth with a crown and patricia provides a good mechanical fixation of the prosthesis, and a metal element with a reinforcing mesh (frame) significantly reduces the percentage of basis damage. In addition, the locking fastening and ceramic or plastic coating of the crown provides good aesthetics.

The proposed method for manufacturing a partial denture with a single tooth was used for the manufacture of partial dentures with fixation on a single tooth in 12 patients. Patients were observed after prosthetics for three years. The treatment results are good.

Claims (1)

A method of manufacturing a partial removable denture with a single tooth, including the manufacture of an artificial crown on the tooth, casting an impression from the jaw, making a basis with a bite roller, determining central occlusion, manufacturing a metal clamer for a tooth, setting up artificial teeth, fitting the wax structure of the prosthesis in the patient’s oral cavity , replacing the wax basis with plastic, grinding and polishing a removable denture, applying the finished removable denture to the jaw, characterized in that on a single standing A patient’s tooth is made of an artificial crown with two patrices on its approximate surfaces, an individually made metal frame is welded into the plastic base of a partial removable prosthesis, consisting of a metal reinforcing mesh and a metal element with matrices to accommodate patches of an artificial crown.

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