RU2382618C2 - Combined detachable prosthesis method (technique) of manufacturing one-piece metal framework for combined detachable prosthesis - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: method of manufacturing combined detachable prosthesis, containing artificial teeth, plastic hard basis, soft amortising basis from silicon and one-piece metal framework, on whose internal surface retentional coating, providing connection of one-piece metal framework with other parts of prosthesis, is applied, including modeling of prosthesis on model with application of occluder or articulator. Wax walls of prosthesis are modeled thinner, if possible, it is formed into flask in direct way on prosthesis boundaries, wax composition is removed, prosthesis bed is covered with oil, boundaries of future one-piece metal framework are outlined, clasp wax is heated, put onto flask, formed in flask on internal surface of prosthesis bed, teeth are released from wax, excess of wax is cut off, casting partitions are pasted in and retentional coating is applied inside framework, wax composition is removed, metal framework is cast, casting partitions are removed in cast framework, further framework is finished, polished or covered with titanium nitrite, gilding or ceramics of red-pink colour, then placed back into flask basis into its initial bed, after that plastic parts of prosthesis, consisting of hard basis plastic and soft silicon basis, are formed and polymerised under pressure.

EFFECT: elimination of possibility of breaking and increase of service term.

28 dwg

Description

The invention relates to the field of dentistry, orthopedics, in particular to removable dentures (full and partial).

Known analogues

A.1. Full and partial removable dentures made entirely of plastic are known, they consist of plastic teeth and a plastic (red-pink) basis.

A.2. Full and partial removable dentures are also known, into which an reinforced mesh 0.1-0.15 mm thick is additionally introduced to strengthen the prosthesis.

The disadvantages of claim 1 and claim 2 are quite frequent fractures during eating due to the natural "aging" of materials, accidental fall of the prosthesis during hygiene procedures, etc.

The disadvantage of claim 2 is the impossibility of repairing the prosthesis in the usual way, the need to take additional casts, the inability to reinsert the reinforced mesh into the prosthesis.

The disadvantages of claim 1 and claim 2. Dentures have a significant wall thickness of 2 mm and significant weight. In conventional plastic prostheses, the use of a soft base is sharply limited, since he weakens the design.

Well-known analogues: full and partial removable dentures made entirely of plastic have a limited, rather short service life, the use of a soft base in them is limited, the strength of the prosthesis increases due to the thickness of the structure, which means that the weight of the prosthesis increases, and the space of the oral cavity decreases.

Information sources

The textbook “Dental prosthetics”, compiled by: Kopeikin V.N. and Demner L.M. The sixth section. Removable dentures and their manufacturing technology. Chapter XIV. Removable laminar dentures to replace dentition defects. Moscow, TRIADA-X Publishing House, 2003. The textbook is intended for students in the dental departments of medical schools. License of the Republic of Latvia No. 066029 of July 28, 1998. The closest analogue (prototype).

Complete removable laminar denture

My Proposed Combined Removable Denture. The method (technique) of manufacturing a cast metal frame for a Combined Removable Denture due to the use of a cast metal frame in the design eliminates the possibility of fracture of removable dentures, which significantly lengthens their service life. There is an opportunity to produce sufficiently strong combined removable dentures with a cast metal frame for various pathologies of the bite, when there is not enough space for a conventional denture, and most importantly, it becomes possible to add a soft base without weakening the strength of the entire structure with virtually no restrictions, which significantly improves the consumer properties of dentures.

The combined Removable Denture due to the solid metal frame without losing the strength of the entire structure is made thinner than conventional prostheses (up to 1.3 mm in total thickness), which means it is lighter.

The space of the oral cavity increases, diction is restored faster, adaptation is easier.

Due to the cast metal frame, much less adherence of food and the penetration of its derivatives into the structure of the prosthesis, i.e. It is more hygienic.

Solid metal frame can be of several types:

1 - Normal metal.

2 - Metallic, coated with titanium nitrite - yellow.

3 - Metal coated with gold alloy.

4 - Metal, covered with a thin layer of ceramics - red-pink color.

My proposed method (technique) for manufacturing a solid metal frame does not require special additional equipment and can be applied everywhere after training technical personnel.

Combined Removable Denture consists of:

1 - Solid metal frame.

2 - Artificial teeth.

3 - Solid basis (red-pink solid base plastic).

4 - Soft basis (soft silicone or other gasket - a soft basis is added if there is a medical indication).

Brief description of the attached drawings and photos

For an explanation of the described Combined Removable Denture are given:

Photo 1, where

1 - Artificial teeth.

2 - Base solid (red-pink solid base plastic).

3 - Solid metal frame.

4 - Soft basis.

Photo 2, where

4 - Soft basis (soft silicone or other gasket - a soft basis is added if there is a medical indication).

Cross section diagrams (without soft pad)

Figure 3 is a cross section of the upper Combined Removable Denture,

Where

1 - Artificial teeth.

2 - Base solid (red-pink solid base plastic).

3 - Solid metal frame (thickness 0.5 mm).

Figure 4 is a cross section of the lower Combined Removable Denture,

Where

1 - Artificial teeth.

2 - Base solid (red-pink solid base plastic).

3 - Solid metal frame (thickness 0.5 mm).

Cross section diagrams (with padding)

5, is a cross section of the upper Combined Removable Denture,

Where

1 - Artificial teeth.

2 - Base solid (red-pink solid base plastic).

3 - Solid metal frame (thickness 0.5 mm).

4 - Soft basis (soft silicone or other gasket - a soft basis is added if there is a medical indication).

6 is a cross section of the lower Combined Removable Denture,

where 1 - Artificial teeth.

2 - Base solid (red-pink solid base plastic).

3 - Solid metal frame (thickness 0.5 mm).

4 - Soft basis (soft silicone or other gasket - a soft basis is added if there is a medical indication).

The one-piece metal frame for the Combined Removable Denture is a one-piece metal structure with a retention coating applied to the inner surface, covering the removable prosthesis along the entire perimeter from the outer vestibular, oral and approximate sides, providing a connection of the whole-cast metal frame with other parts of the prosthesis having a cross section ( thickness) 0.5 mm (recommended), externally coated with ceramics, titanium nitrite or other types of coatings a polished:

Photo 7 - Solid metal frame.

Photo 8 - Solid metal frame,

where 5 is the applied retention coating.

The implementation of the invention

Method (technique) of manufacturing a Combined Removable Denture.

(1) A method (technique) for manufacturing an integral metal frame for a Combined Removable Prosthesis.

The proposed object is made in the following way.

1 - The prosthesis is modeled on the model in the usual manner using an occluder or articulator. The wax walls of the prosthesis are modeled as thin as possible, taking into account the specific work (photo 9, 10).

2 - The prosthesis is gypsum in the cell in the opposite way along the boundaries of the prosthesis (photo 11).

3 - The wax composition is removed, and the prosthetic bed in the cuvette is treated with oil to prevent the future wax composition from sticking to the all-metal skeleton.

4 - Next, the boundaries of the future all-metal frame are outlined, departing 2-2.5 mm from the edge of the border of the prosthesis (transitional fold) (photo 12).

5 - Next is taken blank of clasp wax (thickness 0.5 mm) or polymer adapter. Heats up in hot water (photo 13).

6 - Superimposed on a cuvette. A cotton swab or other soft swab is formed on the inner surface of the prosthetic bed in a cuvette (photo 14, 15, 16, 17, 18).

7 - Teeth are freed from wax, excess wax is cut off along the marked boundaries (photo 19).

8 - Molded partitions are glued in and a retention coating is applied (photo 20).

9 - The wax composition is removed and transferred to the foundry (photo 21, 22).

10 - Next, in the molded frame, the casting partitions are removed. It is finished, polished and, if necessary, coated with titanium nitrite, gilding or red-pink ceramic (photo 23, 24, 25).

11 - Next, the solid metal frame is laid in its bed in a cuvette (photo - 26, 27).

12 - Next, a layer of red (hard) base plastic is packaged and molded into a cuvette, then a layer of soft base plastic (silicone), according to their technology, is molded under pressure and polymerized.

13 - The finished prosthesis after polymerization is slowly cooled to room temperature, finished and polished (photo 28) according to the technological conditions for the plastics used.

Claims (1)

A method of manufacturing a combined removable denture containing artificial teeth, a plastic hard base, a soft shock-absorbing base made of silicone and a cast metal frame, on the inner surface of which a retention coating is applied, providing a connection of the cast metal frame with other parts of the prosthesis, including modeling the prosthesis on a model using an occluder or articulator, while the wax walls of the prosthesis are modeled as thin as possible, form it in a cell directly along the borders of the prosthesis, remove the wax composition, cover the prosthetic bed with oil to prevent adhesion of the future wax composition of the all-metal frame, outline the boundaries of the future all-metal frame, 2-2.5 mm indent from the edge of the prosthesis, heat the clasp wax with a thickness of 0.5 mm or polymer adapt, put it on the cuvette, form in the cuvette with a cotton or other soft tampon along the inner surface of the prosthetic bed, teeth are freed from wax, excess surplus wax is cut off along the marked boundaries, pasted t cast partitions and apply a retention coating inside the frame, remove the wax composition, cast the metal frame, remove the cast partitions in the cast frame, then finish the frame, polish it or cover it with titanium nitrite, gilding or red-pink ceramic, then put it back into the base of the cuvette in plastic parts of the prosthesis, consisting of a solid base plastic and a soft silicone base, are then molded and polymerized under pressure.

Images