RU2502493C1 - Method for removable denture reline - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to orthopaedic dentistry and aims at improving the removable denture. Trough-shaped grooves 1 mm deep divergent radially from the centre and extending onto a vestibular surface of the prosthesis within a transient fold, are formed on a basis from an internal surface using a pear-shaped chisel of the diameter of 2 mm; a chamfer is formed at an right angle along the perimetre of the prosthesis. An autopolymer resin paste of the second stage of swelling is applied on the internal surface of the prosthesis and fixed in patient's oral cavity in the position of centric relation of the jaws. The excess material is removed, and the prosthesis is polished.

EFFECT: method enables higher quality of removable denture fixation in patient's oral cavity with various compliance ratios of prosthetic bed mucosa due to the intra-oral reline.

Description

The invention relates to medicine, in particular orthopedic dentistry, and for the restoration of removable dentures.

In modern orthopedic dentistry, the problem of improving the operational properties of removable dentures remains relevant. In the process of using a removable denture, atrophy of the tissues of the alveolar process of the jaw bone adjacent to the prosthesis gradually occurs. As a result, the conformity of the configuration of the inner surface of the base of the removable prosthesis to the tissue relief of the prosthetic bed is violated. This leads to uneven transmission of chewing pressure, which is often the cause of a fracture of the base. In light of the foregoing, in order to increase the service life of a basic denture, it is important to timely identify defects in the denture and relocate it. Relocation is widely used for the restoration of removable prostheses made of acrylic plastic.

There is a method of relocation of a removable denture, which consists in the fact that a porous retention layer of a metal identical to the base metal is applied to the inner surface of the metal base by plasma spraying. According to the proposed method carry out the relocation of dentures having a metal base of various metals: stainless steel, KHS, titanium and its alloys, gold and its alloys. As the material for relocation, acrylic self-hardening plastics, cold polymerization silicone, a heliocomposite, which is applied to the inside of the prosthesis, are then placed in the patient’s mouth, the relocation material is cured, the prosthesis is removed from the oral cavity and the edges of the prosthesis are formed (Patent RF 2183106 dated 10.06. 2002).

There is a method of relocation of a removable denture made of acrylic plastic (V.I. Kopeikin, V.A. Ponomareva and others. Orthopedic dentistry, M., Medicine, 1988, S. 40-405), which consists in the fact that First, an examination of the jaws and prostheses is carried out, paying attention to the length of the edges, volume. Then, a plastic layer 1 mm thick is removed from the surface of the prosthesis adjacent to the mucous membrane of the prosthetic bed. For restoration of the prosthesis use self-hardening plastic "Protacryl" and "Redont". The plastic dough in the second stage of swelling ("stretching threads") is applied to the treated prosthesis base in a uniform layer. After 10-15 seconds, when the surface of the plastic becomes dull, the prosthesis is inserted into the oral cavity, placed on the jaw and pressed, after which the patient closes the jaw. The excess plastic is removed with a spatula, the prosthesis in the rubber-like polymerization phase is removed from the oral cavity, placed in a special apparatus where the final polymerisation of the plastic takes place. The final treatment of the prosthesis is to nullify the extruded surplus of plastic.

This method is selected for the prototype.

The disadvantage is that during intraoral relocation, the surface of the prosthesis facing the prosthetic bed often has influxes of material used, due to varying degrees of elasticity and compliance of the mucous membrane of the hard palate in different anatomical areas. This entails additional work on the correction of the prosthesis, which subsequently negatively affects its fixation in the oral cavity.

The objective of the invention is to improve the quality of fixation of a removable basic prosthesis in the oral cavity and reduce labor costs for its restoration.

The technical result of the invention is to increase the fixation of a removable prosthesis in the oral cavity during intraoral relocation in patients with a different coefficient of compliance of the mucosa of the prosthetic bed in different anatomical areas of the hard palate.

The technical result is achieved due to the fact that the method of relocation of a removable denture consists in forming, on the basis of the prosthesis from the inside, facing the prosthetic bed, a pear-shaped shtichel with a diameter of 2 mm, groove-shaped grooves 1 mm deep, diverging from the center radially and passing to the vestibular surface of the prosthesis in the transitional zone, a step is formed at an angle of ninety degrees, made along the entire perimeter of the prosthesis with a fissure cutter with a flat end surface, and then on the inside the lower surface of the prosthesis adjacent to the prosthesis is applied with a self-hardening plastic dough in the second stage of swelling and fixed in the patient's oral cavity in the position of the central ratio of the jaws, the excess is removed and the prosthesis is polished.

Grooved grooves and a ledge around the perimeter of the prosthesis provide a uniform decompression distribution of self-hardening plastic for no sag, which ensures a high level of congruence of the mating surfaces and reduces the level of colonization of microorganisms and the doctor’s labor costs for the restoration of the prosthesis.

The method of relocation of a removable denture is illustrated in the drawing, where in Fig.1:

1 - the basis of the prosthesis

2 - artificial teeth

3 - the inner surface of the prosthesis

4 - grooved grooves

5 - ledge along the perimeter of the prosthesis

6 - a layer of self-hardening plastic.

The method of relocation of a removable denture is as follows:

On the basis of the prosthesis 1, from the inner surface 3 with a pear-shaped shtichel with a diameter of 2 mm, groove-shaped grooves 1 mm 4 deep are diverging radially from the center and passing to the vestibular surface of the prosthesis in the transition zone are sweet and form a step 5 at an angle of ninety degrees, made along the entire perimeter prosthesis. Then, on the inner surface of the prosthesis, the dough is self-hardening plastic in the second stage of swelling and is fixed in the patient's oral cavity in the position of the central ratio of the jaws, the excess is removed and the prosthesis is polished.

Claims (1)

The method of relocation of a removable denture consists in forming, on the basis of the prosthesis from the inside, facing the prosthetic bed, a pear-shaped shtiehel with a diameter of 2 mm, groove-shaped grooves 1 mm deep, radially diverging from the center and passing to the vestibular surface of the prosthesis in the transitional zone of the tooth that is formed at an angle 90 ° ledge made along the entire perimeter of the prosthesis with a fissure cutter with a flat end surface, after which the dough of self-hardening plastic is applied to the inner surface of the prosthesis the second stage of swelling and is fixed in the patient's oral cavity in the position of the central ratio of the jaws, the excess is removed and the prosthesis is polished.

Images