The method of forming the adhesive-opatrny system in metallogenically dental prostheses

 

(57) Abstract:

The invention relates to the field of prosthetic dentistry and is intended for use when facing dentures heliconiinae materials. The technical result is to simplify the process of forming the adhesive-opatrny system and reducing the cost of manufacture metallogenically dentures. How is that for pre-coated metal plasmolen layer frame structure of the dental prosthesis by the method of plasma spraying simultaneously applied silicon-containing layer and Apacer of a mechanical mixture of metal oxides and the basis of the mixture is aluminum oxide with the addition of silicon oxide and inorganic dyes. After applying a layer, it is impregnated with the silane. The use of the proposed method can improve the bonding strength of the facing heliconiini materials with metal frame in 3-3,5 times.

The invention relates to medicine, namely prosthetic dentistry, and concerns facing dentures heliconiinae materials.

The actual problem in the technique of manufacturing metalloglaboratornaya dentures t the th of the prosthesis, and with the facing material. Adhesive-opatrny system includes silicon-containing layer, which maintains the lining materials on metallic surface of the dental prosthesis, and svetomaskirovkoy Apacer. Creating a silicon-containing layer is fraught with considerable difficulties because used for this purpose silica sand (the silica) is difficult to implement in the metal surface of the dental prosthesis. The important role played by the high cost cetomacrogol of upacara - light-cured liquid polymer filled with metal oxides. All this hinders the widespread adoption of Heliconia in practical dentistry, despite the fact that from a physiological point of view, this lining material is more acceptable than, for example, acrylic plastic (1).

Known way to create adhesive systems when facing dentures geliokompozitom (2), in which the silicate layer on the surface of the metal frame is applied using sandblasting silica sand, and light curing of Apacer - with a brush several layers with intermediate light curing each layer. This adhesive system is not today amicucci adhesive composite system (application 99101086, CL With 20 14/48, 1999), in which silicon ions are injected into the surface of titanium alloy by ion doping, followed by thermal deposition of oxide materials. However, application of this method is limited by the fact that it can only be used for dentures, metal base which is made of titanium and its alloys.

The closest, according to the authors, analogue (prototype) is adhesive system Siloc" (3). Upon receipt of this adhesive system after sandblasting the surface of the frame of the dental prosthesis with a brush put "Sil-pre" polymer bonding layer, reinforced silicon dioxide with subsequent activation by temperature. The temperature of activation is selected so as to prevent deformation of the frame and the danger of oxidation of the metal. After activation of the applied silane layer Siloc-bond" and light curing of Apacer. Last put 2-4 times with intermediate curing of each layer. The disadvantage of this adhesive system is the duration and complexity of its creation, and the relatively high cost due to the use of expensive light curing of Apacer.

The main task, which is and reducing the cost of manufacture metallogenically dentures.

The proposed method for adhesive-opatrny system in heliconiine dental prostheses involves pre-coating the surface of dentures metal plasmanate layer, which is a method of plasma spraying simultaneously applied silicon-containing layer and Apacer of a mechanical mixture of metal oxides and the basis of the mixture is aluminum oxide (Al2ABOUT3with the addition of silicon oxide (SiO2and inorganic dyes.

When implementing this method beforehand on the surface of the metal frame of the dental prosthesis is applied intermediate plazmalemmy layer of metal identical to the metal frame, and then prepare a mechanical mixture on the basis of Al2ABOUT3and SiO2with the addition of inorganic dyes needed to obtain the desired color for the lining geliokompozitom. This mechanical mixture is applied by plasma spraying. The obtained adhesive-opatrny system is composed of a silicon-containing layer and Apacer applied simultaneously. After application of adhesive-opatrny system conduct silvervine and facing dentures geliokompozitom on there is explained by the necessity of smoothing the existing difference of coefficients of thermal expansion between the metal frame of the dental prosthesis and the adhesive-opatrny system, consisting of oxides, to avoid cracking of the adhesive-opaquemove layer due to possible surface tensions. The thickness of the preliminary layer is determined by the capabilities of plasma spraying and is a minimum of 20-30 microns.

The presence of silicon oxide (quartz sand) in the proposed adhesive-opatrny system is necessary for the formation of chemical bonds through the silane polymer matrix Heliconia. The content of silicon oxide ranged from 10-50%. As it is practically impossible to apply by plasma spraying a layer of silicon oxide in its pure form, in order to keep silica sand, use aluminum oxide. In addition, aluminum oxide performs the function of Apacer and serves to mask the dark color of the metal. To meet Apacer, applied according to the proposed method, international classification of color "VITA" for filling and finishing materials are applied using plasma spray mechanical mixture was added in small quantities (2-25%) inorganic pigments, for example, from a set of dental glass-ceramic "SICOR". The proposed system can also serve only to mask the dark color of the metal. In this case neorganic.

By applying an adhesive-opatrny system of the proposed method on a metal surface of the frame of the dental prosthesis is formed of a porous layer of a certain color. To achieve the required color sufficient thickness of the layer of adhesive-opatrny system, comprising 70 to 100 microns.

Cieniowanie adhesive-opatrny system, i.e., coating the silane - bifunctional chemical compound that can react chemically with the silica, and polymer matrix Heliconia, impregnation liquid matrix polymer, application of dentinal and enamel mass produced according to the known technologies, which are selected depending on the composite material.

For objective evaluation of the adhesion forces facing heliconiinae material (using the proposed adhesive-opatrny system) with a metal frame of a dental prosthesis according to International standard ISO 10477 (1992) and amendment 1 thereto (1998) were made of a special device for testing according to the instructions contained in the standard. Investigation of the adhesion forces was carried out on a universal testing tensile testing machine "INSTRON". The test results showed that mo is DHESIVE-opatrny system exceeds the desired value according to the ISO standard (5 MPa) in 3-3,5 times. The use of adhesive-opatrny system dyes reduces the adhesive strength of 20-30%, but it remains quite high (12.5 to 13 MPa).

Applying the proposed method to obtain adhesive-opatrny system avoids the use of expensive light curing of Apacer, to simplify the process and shorten the time of forming the adhesive-opatrny system.

The obtained adhesive-opatrny system has a number of positive properties:

- full shelter of the dark metal color;

- strong connection with the metal frame due to thermal introduction of the powder particles of the oxides and the resulting chemical bonds;

- the porous structure of adhesive-opatrny system provides a mechanical connection with Heliconia due to more complete polymerization of the liquid light-curing the matrix polymer in the porous structure;

- providing chemical bonding due to the content in the porous plasmalemma layer of SiO2that is chemically bonded with silane, providing a chemical bond with Heliconia;

- can be used for dental prostheses made of different metals and alloys (stainless: formation of adhesive-opatrny system by simultaneously drawing on preliminary plazmalemmy metal layer by plasma spraying silicon-containing layer and Apacer of the mechanical mixture of the oxides of aluminum and silicon with the addition of inorganic dyes, in the known technical solutions are not found, it can be concluded that the proposed solution meets the criteria of "novelty" and "inventive step".

Example 1. To obtain the combined metalloelastase bridge color A2 according to the international classification was made a frame made of titanium alloy by casting. After fitting the frame on a working model and validation in the oral cavity by the method of plasma spraying on the frame was applied adhesive system consisting of a silicon-containing layer and Apacer. The sputtering was performed on the medical plasma installation. Pre-applied layer of powder W-6 with a thickness of 30 μm. The mixture for forming the adhesive-opatrny contained 80% of Al2ABOUT315% of SiO2and 5% of inorganic dye 3 from a set of dental glass-ceramic "SICOR" THE 64-2-326-81. The sputtering was performed in a stream of argon. The thickness of adhesive-opatrny system was 80 μm. After deposition, the spent impregnation of adhesive-opatrny system silane with a brush. After drying the surface and evaporation of the organic solvent from the silane was applied liquid matrix polymer and held his light polymerization. Blackrain).

Example 2. To fulfill the order of the dental clinic "Smile Rhino" on metallogenically bridge color 3D was made forged-brazed frame made of a gold alloy. After checking the frame of noble alloy in the mouth it was formed adhesive-opatrny system, which consisted of 60% Al2O327% of SIO, SIS2and 3% of inorganic dye. Adhesive-opatrny system was applied by plasma spraying. For applying a pre-coat used powder, composed of up to 2% of noble metals. After silanization and impregnation liquid polymer frame denture was faced with material Artglass" "Heraeus Kulser GmbH (Germany). Suffered dentinal weight and enamel weight with phased light curing each layer. After checking the design in the oral cavity conduct final light curing, and polishing metalloelastase bridges.

Example 3. To obtain the clasp prosthesis with artificial teeth color A4 and locking fixation at low clinical crowns preserved teeth in the design introduced metallogaloidnye artificial teeth, containing thrombose alloy. Were applied to the "button lock", consisting of globular Patric, fixed on a fixed prosthesis covering the abutment teeth, and elastic matrices, fixed in the frame clasp prosthesis. For fixing the elastic matrix frame clasp prosthesis includes cast metal cylinders corresponding to the size of the matrix. Due to low clinical crowns preserved teeth to cover the matrix part of the framework standard artificial acrylic teeth without disturbing the occlusion is not possible, so the outer side of the matrix cylinder frame clasp prosthesis model as a metal frame combined artificial tooth. On the outer surface of the matrix cylinder frame clasp prosthesis form of adhesive-opatrny system by the method of plasma spraying is similar to examples 1, 2. Powder for plasma spraying of adhesive-opatrny system consisted of 50% Al2ABOUT350% of SIO, SIS3. Inorganic dye in the initial mixture was added. For applying a sublayer used CJC. For cladding used heliconiinae material "Visiogen" firm ESPE, Germany). Dentinal and enamel layers were applied with a phased light polymerization. For lstvennyh teeth, included in the design of clasp prosthesis, in the articulator and their correction was performed, the final polymerization, and polishing.

Example 4. For the manufacture of inexpensive metalloelastase bridges colors B5 used metal forged-soldered stainless steel frame. After fitting the frame on a working model and validation in the oral cavity on the surface of the frame by the method of plasma spraying was formed adhesive-opatrny system. For applying a pre-coat used powder dental stainless steel dispersion of 40 to 60 μm. Adhesive-opatrny system was composed of 50% l, 30% SiO and 20% of the basis weight WB from a set of Sitall "SICOR". For cladding used the cheapest helicopsis light polymerization "Prismatic" company "scomagent" (Moscow), which is used for filling teeth. In sets for fillings teeth missing opacity and substances for adhesion to metal, so they are much cheaper than special sets of heliconiiti for cladding metal frames. The use of this material for the cladding is only possible with the application of the proposed adhesive-opatrny of Sizov and crowns of light-cured composite materials", the newspaper "Dental technician-professional", 1, 1999

2. Popov N. A. "Methodology for working with samootverjennyi facing material "Vidio-hem, 1997

3. Khalmer "Siloc: traction-based dental alloys new generation". "Clinical dentistry", 3, 1997

The method of forming the adhesive-opatrny system in metallogenically dental prostheses, comprising coating the surface of the frame denture silicon-containing layer and Apacer with subsequent impregnation silane, characterized in that on the pre-coated metal plasmolen layer frame structure of the dental prosthesis by the method of plasma spraying simultaneously applied silicon-containing layer and Apacer of a mechanical mixture of metal oxides and the basis of the mixture is aluminum oxide with the addition of silicon oxide and inorganic dyes.

 

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