RU194083U1 - Combined full denture - Google Patents

Abstract

The essence of the device; a removable prosthesis contains a base with artificial teeth and a frame made of composite material reinforced with fiberglass, having a cross section of 0.7-1.0 mm; located by the type of “sandwich”, departing from the boundaries of the acrylic base of the upper and lower jaw by 2-3 mm; blocking the alveolar process in the projection of all teeth; on the upper jaw, overlapping the hard palate by 2/3 (front and middle parts); the prosthesis consists of a plastic base, inside of which there is a frame made of composite material (Trinia company Bicon, LLC, Boston USA). On the basis of the frame there are artificial teeth made of plastic. Technical result: increased service life by eliminating the possibility of microcracks, improving fixation of the prosthesis due to weight reduction. 5 ill.

Description

The utility model relates to medicine, namely to orthopedic dentistry and is used to increase the effectiveness of orthopedic dental treatment of patients with complete absence of teeth.

For the manufacture of complete plate prostheses, acrylic base plastics are traditionally used. The problem of ensuring the strength of dentures with high functional quality and durability remains unresolved. According to I.Yu. Lebedenko and S.D. In the first year of using removable dentures, Arutyunova breaks the basis in 22-31% of cases [Improving the efficiency of restoration of removable laminar dentures after breakage Russian Dental Journal. - 2014. - No. 5. - S. 4-6]. To prevent damage to the base of a removable prosthesis and increase its service life, especially under difficult clinical conditions, base reinforcement is traditionally used. The most commonly used materials for reinforcement are metal alloys. Known removable prosthesis "Combined removable prosthesis with a molded metal frame" (RF Patent for the invention of February 27, 2010 RF No. 2382618 C2), consisting of a solid plastic base, solid molded metal frame, artificial plastic teeth and soft basis (if there are medical indications).

The disadvantages of the prototype include the formation of microcracks and chips of the basis due to the lack of adhesion of acrylic plastic to the metal due to the lack of chemical bonding, impaired fixation of the upper removable denture due to a significant increase in the weight of the structure.

Effect: increase the service life by eliminating the possibility of microcracks, improving the fixation of the prosthesis due to weight reduction.

A utility model is shown in the drawings, where in FIG. 1 shows a combined full removable denture on the upper jaw (top view), FIG. 2 shows a combined full removable denture on the upper jaw (transverse incision), FIG. 3 - shows a combined complete removable denture on the upper jaw (sagittal section), Fig. 4 - shows a combined complete removable denture on the lower jaw (top view), in Fig. 5 - where the combined full removable denture on the lower jaw (sagittal section) is depicted.

The combined full removable denture consists of a plastic base (1) having an inner part (2) and an outer part (3), between which a frame (4) is inserted, made of a composite material (Trinia from Bicon, LLC, Boston USA) having a transverse section 0.7-1.0 mm; located by the type of “sandwich”, departing from the boundaries of the acrylic base of the upper and lower jaw by 2-3 mm; blocking the alveolar process in the projection of all teeth; on the upper jaw, blocking the hard palate in the front and middle parts). On the basis (1) with the frame (4) are artificial teeth (5) made of plastic.

A method of manufacturing a combined complete removable denture; receive anatomical impressions from both jaws of the patient, which are used to make plaster working models, then determine the central ratio of the jaws and plaster the models into the occluder / articulator and proceed to model the internal part (2) of the prosthesis base (1), which is carried out in the traditional way, compressing the model with a thin plate insulating wax, while in the inner part of the wax base (2) perforations are formed in which subsequently “restrictive columns” will be installed attached to the frame (4) so that when replacing the wax composition of the inner part of the base (2) with a plastic one, the frame did not shift towards the prosthetic bed. The model with the perforated wax inner part of the base (2) is duplicated. On a duplicated model, the prototype of the carcass (4) is modeled from wax. Next, the wax reproduction of the carcass (4) is removed from the model, scanned, and the carcass (4) is obtained from the composite material reinforced with fiberglass by computer milling. Then, the obtained frame (4) is installed on the wax inner part of the base (2) located on the working plaster model. On top of the frame (4) form the outer (3) part of the basis (1) of wax and proceed with the setting of artificial teeth (5). Next, a wax reproduction of the prosthesis with the inserted framework (4) in the patient’s oral cavity is checked. Replacement of wax with plastic is carried out according to traditional technology in accordance with the manufacturer's instructions.

The utility model can be used in the clinic of orthopedic dentistry in the manufacture of prostheses with complete loss of teeth in the upper and lower jaw to restore the function of chewing, articulation and speech.

Claims (1)

Combined full removable denture consisting of an acrylic base with a frame with artificial teeth made of plastic, characterized in that a frame made of a composite material reinforced with fiberglass Trinia having a cross section of 0.7-1.0 mm is inserted into the acrylic base located by the type of “sandwich”, departing from the boundaries of the acrylic base of the upper and lower jaw by 2-3 mm, made with the possibility of overlapping the alveolar process in the projection of all teeth, on the upper jaw and overlapping the hard palate in front and middle parts.

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