JP5183127B2 - Composition for trial application of dental prosthesis - Google Patents

Description

The present invention relates to a dental prosthesis compatible trial application composition used for setting an accurate occlusal surface when a dental prosthesis is produced.

When producing a dental prosthesis and fixing it to the affected area in the oral cavity, it is common to use a dental cement material for bonding. At this time, since the dental prosthesis is lifted due to the thickness of the dental cement material itself, a cement space is further secured on the gypsum model in advance by using, for example, wax on the assumption of the lifting amount. However, since it is very difficult to accurately predict the amount of lift, in practice, a good occlusion cannot be obtained immediately even if a dental prosthesis is mounted in the oral cavity. If too much cement space is used, the occlusal surface will be mounted in a low state, so there is a problem that a sufficient occlusion function cannot be obtained. Causes the prosthesis and the teeth to break. Therefore, in order to obtain a good occlusion, occlusal adjustment is necessary after the dental prosthesis is mounted. When fabricated dental prosthesis occlusal adjustment amount poor accuracy of occlusal height is greater need of not only takes time to final fixing to the oral cavity, the occlusal surface greatly cut is Therefore, there is a problem that the durability of the dental prosthesis is lowered because the occlusion is adjusted.

  In recent years, the progress of dental prosthesis has been remarkable as typified by all ceramics, and zirconia materials that have been difficult to process by CAD / CAM have been applied to dental prosthesis. In particular, in the implant treatment, there is a drawback that the ability to relax slowly is low because the implant fixture embedded in the jaw bone does not have a periodontal ligament unlike natural teeth. If the prosthesis is installed with the occlusal surface higher than the design due to the rising of the dental cement film layer, bone resorption around the fixture may occur or, in the worst case, the fixture may break. There was a danger of falling off. Therefore, more accurate occlusal surface height is required in implant treatment (see, for example, Patent Document 1).

Conventional methods for securing cement space generally use wax. However, there is a problem that the thickness of the wax has to be adjusted by the operator, and a uniform, uniform and accurate cement space cannot be secured. In order to accurately obtain the thickness of the cement space, the most accurate method is to confirm the fit using the cement actually used. However, there is a dental cement is a problem that the strong adhesive force because it is a material for firmly bonding the original dental prosthesis, the task of removing the prosthesis from abutment after the try-in is a very troublesome There is also a problem that it takes time to remove the cement from the prosthesis after removal.

The present invention can provide an accurate film thickness in order to obtain a high occlusal height precision in the dental prosthesis during production, a dental prosthesis that can be removed quickly after the try It is an object to provide a composition for conformal trial application.

  As a result of intensive research to solve the above-mentioned problems, the present inventors have used a composition that can stably reproduce the lift equivalent to the dental cement used, and does not cure itself. It is possible to accurately provide the floating due to cement when preparing a dental prosthesis, and since the composition itself does not harden, it can be easily removed from the oral cavity or abutment model, and the prosthesis can be washed or wiped off. The present invention was completed by finding that the removal work from the object was easy.

That is, the present invention
a) Filler that has a maximum particle size in the range of 1 to 100 μm and does not undergo a curing reaction with one or more of b) component selected from silica powder, glass ionomer cement powder, barium glass powder, and polymethyl methacrylate powder : 5 70% by weight
b) One or more base materials selected from water, glycerin and isostearyl alcohol : 30 to 95% by weight
A dental prosthesis compatible trial composition comprising:

Dental prosthesis adapted try-composition according to the present invention, can be accurately known lifting amount of the prosthesis in the preparation time of the dental prosthesis, a dental prosthesis easily removed from the oral cavity excellent Composition.

  The filler having the maximum particle size of a) component used in the present invention is in the range of 1 to 100 μm and does not undergo a curing reaction with b) component, and has the same thickness as that of dental cement when used in the same manner as the dental cement used. The maximum particle size is set so as to obtain a cement film. The range of the maximum particle size needs to be 1 to 100 μm, which is the thickness range of a conventional dental cement. It is necessary for the filler of component a) not to undergo a curing reaction with the base material component of component b) described later, and if the curing reaction occurs, removal of the prosthesis from the oral cavity and removal of the composition from the prosthesis It becomes difficult. In addition, a filler that undergoes a curing reaction with the component b) is not suitable for confirmation of compatibility because the film thickness changes during the curing reaction. The filler which is a) component is mix | blended in the composition in 5-70 weight%. If the amount is less than 5% by weight or exceeds 70% by weight, the amount of lifting cannot be confirmed sufficiently, and the conformity cannot be confirmed accurately. On the other hand, if it exceeds 70% by weight, the composition becomes too hard and the operability of the composition is lowered.

  The filler of component a) is a filler that does not undergo a curing reaction with component b), which will be described later, and its maximum particle size needs to be adjusted to the thickness required for the composition (thickness of cement used later). is there. As the filler of component a), the inorganic filler is preferably quartz powder, alumina powder, silica powder, kaolin, talc, calcium carbonate, calcium silicate, barium glass, titanium oxide, borosilicate glass, colloidal silica, etc. is there. Also, conventional dental cement powders such as silicate cement powder and glass ionomer cement powder can be used under conditions that do not undergo a curing reaction depending on the selection of component b).

  As the organic filler, a filler obtained by polymerizing and curing a monomer of methacrylate or acrylate with a catalyst can be used. A filler pulverized after polymerization and curing can be used, but a spherical filler by suspension polymerization in which the particle diameter is easily adjusted is preferable. As the monomer of methacrylate or acrylate, those which have been widely used can be used and are not particularly limited. Specific examples thereof include the following substances. Methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, 2-hydroxyethyl methacrylate, 3-hydroxypropyl methacrylate, 2-hydroxy-1,3-dimethacryloxypropane, n-butyl methacrylate, isobutyl methacrylate, butoxyethyl methacrylate, hydroxypropyl methacrylate, Tetrahydrofurfuryl methacrylate, glycidyl methacrylate, 2-methoxyethyl methacrylate, 2-ethylhexyl methacrylate, benzyl methacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, butylene glycol dimethacrylate, neopentyl glycol dimethacrylate, 1, 3- Tandiol dimethacrylate, 1,4-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate, trimethylolpropane trimethacrylate, polyoxytetramethylene glycol dimethacrylate, trimethylolethane trimethacrylate, pentaerythritol trimethacrylate, trimethylol Methanetrimethacrylate, pentaerythritol tetramethacrylate or their acrylates, 2,2-bis (methacryloxyphenyl) propane, 2,2-bis [4- (2-hydroxy-3-methacryloxypropoxy) phenyl] propane, 2, 2-bis (4-methacryloxydiethoxyphenyl) propane, 2,2-bis (4-methacryloxypolyethoxyphenyl) propane or their Relate, and methacrylate or acrylate having a urethane bond in the molecule, such as di-2-methacryloxyethyl-2,2,4-trimethylhexamethylene dicarbamate or its acrylate, other methacrylate or acrylate containing a urethane bond, etc. Those containing many unsaturated double bonds can also be used.

  An organic-inorganic composite filler obtained by solidifying an inorganic filler with a monomer of methacrylate or acrylate and pulverizing it can also be used. In addition, there is no reason which limits these with the kind of monomer of an inorganic type filler and a methacrylate or an acrylate. The above organic fillers, inorganic fillers, and organic / inorganic composite fillers may be used alone or in combination of two or more.

  b) One or two or more base material components selected from water, alcohols and oils: 30 to 95% by weight serves as a base material for dispersing the filler as the a) component. Alcohols include ethanol, 1-propanol, 2-propanol, 2-methyl-2-propanol, glycerin, diglycerin, polyglycerin, propylene glycol, dipropylene glycol, polypropylene glycol, sorbitol, mannitol, ethylene glycol, diethylene glycol, polyethylene Examples thereof include glycol and polyethylene glycol monomethyl ether. However, since alcohols are also included in oils described later, alcohols and oils cannot be clearly distinguished.

  As oils, fats and waxes can be used, and those obtained through derivatives, such as hydrolysis, hydrogenation, high-pressure hydrogen reduction, esterification, and synthetic products thereof can also be used. it can. Specifically, it is an ester-linked fatty acid and glycerin. It is obtained by chemical distillation of oils and fats called triglycerides, waxes that are esters of higher fatty acids and higher alcohols, and crude oil. Hydrocarbons that are compounds composed only of hydrogen, higher fatty acids that are constituents of natural fats and oils and waxes, compounds represented by the general formula RCOOH, etc., and higher alcohols that are monohydric alcohols having 6 or more carbon atoms Examples include alcohols and esters that are organic compounds obtained by dehydration from an acid and an alcohol.

  As the fats and oils, those obtained by decoloring and deodorizing those obtained from nature, and those obtained by hydrogenation to obtain hardened oils can be used. Specifically, avocado oil, almond oil, olive oil, carrot oil, cucumber oil, candle nut oil, grape seed oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil (rice oil), safflower oil, shea butter (Shea fat), soybean oil, tea oil (tea seed oil, tea seed oil), evening primrose oil, camellia oil, corn germ oil (masola oil), rapeseed oil, persic oil (apricot kernel oil, peach seed oil), oat oil, Palm oil, palm kernel oil, castor oil, hydrogenated castor oil (castor wax), sunflower oil (sunflower oil), hazelnut oil, macadamia nut oil, meadowweed oil, cottonseed oil, molasses, palm oil, peanut oil (peanut oil) ), Vegetable oils such as rosehip oil, orange luffy oil, beef tallow, turtle oil (green turtle oil), mink oil, egg yolk oil, powdered egg yolk oil (water) Animal fats such as the egg yolk oil) and the like.

  As the waxes, free fatty acids, free alcohols, hydrocarbons, resins and the like can be used in addition to those existing in nature as animal waxes and plant waxes. Specifically, animal liquid wax such as sperm whale oil, beeswax, whale wax, animal solid wax of lanolin, vegetable liquid wax such as jojoba oil, plant solid wax such as carnauba wax and candelilla wax, montan wax, etc. Examples thereof include mineral solid wax. Although there are exceptions such as lanolin, waxes are generally solid and hard, so that they are difficult to use as a base material of the present composition. Therefore, it is preferable to use them after mixing with fats and oils to adjust the viscosity.

Hydrocarbons chemically without oxidizing altered in a very inert, are those used for reasons such as easy emulsification, carbon number C15 or higher saturated paraffinic obtained by fractionating refining crude oil The so-called hydrocarbons and those collected from animal oils and fats such as squalane and pristane can also be used. Specific examples include α-olefin oligomers, squalane, vegetable squalane, CD squalane, ceresin (ground wax), paraffin (solid paraffin), pristane, polyethylene powder, microcrystalline wax, liquid paraffin, petrolatum and the like.

  As higher fatty acids, synthetic fatty acids such as isostearic acid can be used in addition to substances obtained by further distilling and purifying fatty acids obtained by hydrolyzing natural fats and oils into fatty acids and glycerin. Among the saturated fatty acids and oleic acids of C12 or higher, lower fatty acids and highly unsaturated fatty acids are irritating and odorous, and are difficult to be used because they have disadvantages such as easy acidification. Specifically, arachidonic acid, isostearic acid, undecylenic acid, oleic acid, stearic acid, palmitic acid, behenic acid, myristic acid, lauric acid, lanolin fatty acid, hard lanolin fatty acid, soft lanolin fatty acid, linoleic acid, linolenic acid, etc. Can be mentioned.

  As higher alcohols, in addition to cracked alcohols obtained by hydrolyzing waxes (saponification), reduced alcohols by high-pressure hydrogen reduction of fatty acids and synthetic alcohols from petroleum resources can be used. Specifically, isostearyl alcohol, oleyl alcohol, octyldodecanol, chimyl alcohol (glyceryl monocetyl ether), cholesterol (cholesterin), sitosterol (sitosterin), stearyl alcohol, cetanol (cetyl alcohol, palmityl alcohol), Cetostearyl alcohol, ceralkyl alcohol (monooleylglyceryl ether), decyltetradecanol, batyl alcohol (glyceryl monostearyl ether), phytosterol (phytosterin), hexyldecanol, behenyl alcohol, lauryl alcohol, lanolin alcohol, hydrogenated lanolin alcohol Etc.

  Specific examples of esters include acetylated lanolin (lanolin acetate), isocetyl isostearate (hexyldecyl isostearate), cholesteryl isostearate, octyldodecyl erucate (EOD), cetyl octanoate (cetyl 2-ethylhexanoate) ), Cetostearyl octoate (cetostearyl 2-ethylhexanoate, cetostearyl isooctanoate), octyldodecyl oleate, decyl oleate, hexyldecyl dimethyloctanoate, isocetyl stearate (hexyldecyl stearate), cholesteryl stearate, Butyl stearate, long chain-alpha hydroxy fatty acid cholesteryl (GL cholesteryl), glyceryl trimyristate, cetyl lactate, myristyl lactate, isopropyl palmitate (IPP, Sopropyl palmitate), cholesterol hydroxystearate, isotridecyl myristate (MITD), isopropyl myristate (lPM, isopropyl myristate), octyldodecyl myristate (MOD) myristyl myristate, hexyl laurate, lanolin fatty acid isoprovir, lanolin Examples include fatty acid cholesteryl and diisostearyl malate.

  The above oils may be used singly or in combination of two or more. The blending ratio takes into consideration the viscosity, etc. caused by the shape of the composition, the form of use, and the relationship with other components. It can be set appropriately. In addition, since oils are worried about the bad smell by the rancidity resulting from an unsaturated fatty acid, and the problem of skin irritation, it is preferable to add a natural vitamin E and synthetic antioxidant to a composition as needed.

In the composition for trial application of a dental prosthesis according to the present invention, when the component b) contains water, the component b) further contains c) a water-soluble polymer in an amount of 0.1 to 100 parts by weight of water. It is preferable to include 60 parts by weight. Water-soluble polymers include sodium alginate, propylene glycol alginate, carboxymethylcellulose, sodium carboxymethylcellulose, carboxymethylcellulose calcium, sodium starch glycolate, sodium starch phosphate, sodium polyacrylate, methylcellulose, crystalline cellulose, hydroxypropylcellulose, polyvinylpyrrolidone such as polyvinyl alcohol, acetyl cellulose, hydroxyethyl cellulose, polyacrylic acid, polycarboxylic acids such as polymaleic acid, polymethacrylic acid, polyacrylamide, polyvinyl amine, polysaccharide, polyvinyl sulfonic acid, polyoxyethylene etc. . Water-soluble polymers can adjust the viscosity of water. Especially when alcohols and oils are not included as component b), the use of polycarboxylic acids as water-soluble polymers can provide the same operability as dental cement. Since it can give to a composition, it is preferable.

  The water-soluble polymer is preferably contained in an amount of 0.1 to 60 parts by weight with respect to 100 parts by weight of water. If the amount is less than 0.1 parts by weight, the viscosity of the composition tends to be insufficient. The operability tends to deteriorate.

In the composition for trial application of a dental prosthesis according to the present invention, a filler having a smaller maximum particle size than the component a) may be further added to the component b) as a thickener. As the filler to be blended as the thickener, inorganic fillers usable for the component a) can be used, and colloidal silica having a maximum particle size of 2 to 600 nm is particularly preferable.

  The component b) used in the present invention needs to be blended in an amount of 30 to 95% by weight in the entire composition. If it is less than 30% by weight, the viscosity of the composition becomes too high and the operability is deteriorated, and an accurate film thickness cannot be obtained. On the other hand, if it exceeds 95% by weight, the operability is deteriorated and an accurate film thickness cannot be obtained.

The dental prosthesis compatible trial application composition according to the present invention can be blended with an adhesive material in order to give appropriate tackiness in terms of ease of use. Examples of the adhesive material include guar gum, kajib bean gum, tara gum, tamarind seed gum, gum arabic, tragacanth gum, caraya gum, carrageenan, xanthan gum, gellan gum, curdlan, lactose, chitin, chitosan, chitosamine and the like.

Dental prosthesis adapted trial suitable composition according to the present invention, a) component and b) component and may be supplied in mixed liquid or paste a, b as a) component and a liquid component as powder component) They may be supplied separately as components.

Furthermore, an ultraviolet absorber, a pH adjusting agent, an antioxidant, a fragrance, a pigment, and the like may be appropriately blended in the dental prosthesis compatible trial application composition according to the present invention as long as the effects thereof are not impaired.

<Example>
According to the composition shown in Table 1, paste-like dental prosthesis compatible trial application compositions of Examples 1 to 4 were prepared. Each of the dental prosthesis compatibility trial application compositions was tested for suitability and cleanability. The results are summarized in Table 1.

<Compatibility test>
Two flat glass plates are brought into close contact with each other, and the two thicknesses (A) are measured in units of 2 μm. The upper glass plate is removed, and 0.1 ± 0.05 mL of the sample paste is placed on the center of the upper surface of the lower glass plate. This is placed on the base of the equipment in accordance with the weighted center line of the weighting equipment. Place the upper glass plate that was previously removed in the same orientation as the first thickness measurement, and place it on the cement, centering it again. Carefully apply a load of 150 ± 2 N perpendicularly to the sample through the push plate and in line with the center line. Make sure that the paste completely fills the space between the two glass plates. After applying a load for 1 minute or longer, the glass plate is taken out from the loader and the total thickness (B) of the two glass plates and the cement coating is measured. The thickness (BA) of the cement coating is obtained. This test is repeated 5 times.

<Detergency test>
Peeled glass plate after conformance testing, the aluminum plate was washed under running water in the paste for 20 seconds. After washing with water, the remaining paste on the glass surface was visually confirmed.

グラスアイオノマーセメント粉末： （製品名 Fuji VII： ジーシー社製）
コロイダルシリカＡ（製品名 AEROSIL ２００ 平均粒子径１２ｎｍ： 日本アエロジル社製）
コロイダルシリカＢ（製品名 AEROSIL ３００ 平均粒子径 ７ｎｍ： 日本アエロジル社製）
市販の歯科用合着用セメント組成物 （製品名 フジ I ： ジーシー社製）
<Table 1> (% by weight)

Glass meet Roh-mer cement Powder (product name: Fuji VII: GC Corporation, Ltd.)
Colloidal silica A (Product name: AEROSIL 200, average particle size: 12 nm, manufactured by Nippon Aerosil Co., Ltd.)
Colloidal silica B (Product name: AEROSIL 300, average particle size: 7 nm, manufactured by Nippon Aerosil Co., Ltd.)
Commercial dental cement composition (Product name: Fuji I: GC Corporation)

  As is apparent from Table 1, each example stably shows a film thickness that is substantially the same as the maximum particle size blended in comparison with Comparative Example 1. In Comparative Example 2 using a commercially available curable cement, the remaining of the cement was confirmed after cleaning. However, in the examples of the present invention, since the cleaning could be performed reliably, no remaining was confirmed on the glass surface.

Claims (3)

a) Filler that has a maximum particle size in the range of 1 to 100 μm and does not undergo a curing reaction with one or more of b) component selected from silica powder, glass ionomer cement powder, barium glass powder, and polymethyl methacrylate powder : 5 70% by weight
b) One or more base materials selected from water, glycerin and isostearyl alcohol : 30 to 95% by weight
A composition for trial application of a dental prosthesis comprising: The composition for trial application of a dental prosthesis according to claim 1, wherein b) contains water, and c) contains 0.1 to 60 parts by weight of the water-soluble polymer with respect to 100 parts by weight of water. The composition for trial application of a dental prosthesis according to claim 1 or 2, further comprising colloidal silica having a maximum particle diameter of 2 to 600 nm in the component b).