JPH10175812A - Adhesive for metal to alginate impression material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject adhesive capable of firmly bonding a tray made of a metal to an alginate impression material by including water and/or an organic solvent, an alkaline earth metallic hydroxide and/or its salt in a specific proportion therein. SOLUTION: This adhesive for a metal to an alginate impression material is obtained by compounding (A) 100 pts.wt. of water and/or an organic solvent (e.g. ethanol) with (B) 0.1-30 pts.wt. of an alkaline earth metallic hydroxide and/or its salt (e.g. anhydrous magnesium chloride) and, as necessary, (C) a surfactant. The component B may be a state thereof dissolved or dispersed in the component A. The adhesive is used by applying thereof to a tray made of a metal with a brush, a spatula, a paint-brush, etc., or spraying thereof and naturally drying the adhesive or hot-air drying the adhesive, then piling up the alginate impression material on the tray, collecting the impression and removing the tray integral with the cured alginate impression material after hardening the alginate impression material from teeth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive which can be used for bonding an alginate impression material to a tray used for taking an impression with teeth or other impression materials used for molding.

[0002]

2. Description of the Related Art Alginate impression materials are generally used for molding teeth for restoring teeth. The alginate impression material utilizes the fact that an alginate as a base material and calcium sulfate as a hardening material are kneaded with water to obtain a gel-like hardened body. To mold teeth, generally, a mixture of the base material before hardening and the hardening material is kneaded on a tray that imitates the teeth, and the tray is pressed against the teeth so as to wrap the teeth in the oral cavity. It is performed by removing the body from the tooth as a unit and removing it from the oral cavity. The tray is mainly made of brass, chrome-plated brass, or a metal made of stainless steel or the like, and its shape is, for example, a mesh, plate, or punched hole.

[0003]

However, when an impression is taken using a plate-shaped metal tray, if the tray and the hardened body are to be integrally removed from the tooth, the tray and the hardened body may be removed. As a result, the cured product was greatly deformed, and as a result, there was a problem that a highly accurate impression could not be obtained. Therefore, there has been a demand for the development of an adhesive for bonding the tray and the cured body so that the tray and the cured body are not separated.

[0004]

Means for Solving the Problems The inventors of the present invention have made intensive studies to solve the above problems, and as a result, dissolved or suspended an alkaline earth metal hydroxide or a salt thereof in water or an organic solvent. After applying the liquid to a metal tray in advance and drying, the alginate impression material before curing is put on the metal tray, and after the alginate impression material is cured, the cured body is removed from the metal tray and removed from the teeth After doing
It has been found that no peeling occurs between the metal tray and the cured product, and the present invention has been completed.

That is, the present invention relates to (a) 100 parts by weight of water and / or an organic solvent, and (a) 0.1 to 30 parts by weight of a hydroxide of an alkaline earth metal and / or a salt thereof. Adhesive with alginate impression material.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, known water and / or organic solvent can be used without any limitation. Specifically, examples of the organic solvent include alcohols such as methanol, ethanol, isopropyl alcohol and butanol; ketones such as acetone and methyl ethyl ketone; aromatic hydrocarbons such as toluene, benzene and xylene; hexane, pentane and butane. Aliphatic hydrocarbons. Particularly, organic solvents having high volatility and low toxicity, such as ethanol and isopropyl alcohol, are preferably used because drying described later can be easily performed.

The water and / or organic solvent need not necessarily dissolve the alkaline earth metal hydroxide or a salt thereof described below, and may disperse the hydroxide or the salt thereof. .

Known alkaline earth metal hydroxides and / or salts thereof used in the present invention can be used without any limitation. Specific examples of particularly preferably used are calcium, magnesium, barium, hydroxides such as strontium, chlorides, bromides, phosphates, citrates, acrylates, methacrylates, and the like.
Used alone or in combination.

The amount of the alkaline earth metal hydroxide and / or salt thereof must be 0.1 to 30 parts by weight based on 100 parts by weight of the water and / or organic solvent. When the amount of the alkaline earth metal hydroxide and / or its salt is less than 0.1 part by weight, a sufficient adhesive effect cannot be obtained, or when the amount is more than 30 parts by weight, the adhesive is not uniform. This is not preferable because of the formation of a polymer and a decrease in dispersibility. The amount of the alkali metal hydroxide and / or salt thereof is preferably in the range of 1 to 25 parts by weight in consideration of the viscosity of the adhesive and the operability of the application or spraying operation.

If the hydroxide of the alkaline earth metal and / or its salt is hardly soluble in water and / or an organic solvent, it may be dispersed. In this case, in order to prevent precipitation or aggregation of the alkaline earth metal hydroxide and / or its salt, the particle size of the alkaline earth metal hydroxide and / or salt is preferably as small as 100 μm or less, Further, the particle size is more preferably 10 μm or less. After the hydroxide of the alkaline earth metal and / or a salt thereof is dispersed in water and / or an organic solvent, a surfactant may be added as a third component to prevent sedimentation or aggregation.

As the surfactant used in the present invention, known surfactants can be used without any limitation, and any of anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants can be used. Can also be used. Specific examples of the surfactant include anionic surfactants such as alkyl sulfonates, alkylbenzene sulfonates, and alkyl ether carboxylates, and cationic surfactants such as alkylamine salts and quaternary surfactants. Ammonium salts and the like, and amphoteric surfactants include polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene-polyoxypropylene block polymer, polyoxyethylene glycerin fatty acid ester, sucrose ester, polyoxyethylene Examples include diethyleneamine, block polymers of polysiloxanes and polyoxyethylenes, and the like.

The above surfactant is used in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of an alkaline earth metal hydroxide or salt.
It is preferably in parts by weight.

The method of using the adhesive between the metal and the alginate impression material of the present invention is not particularly limited. Generally, a metal tray is used by applying with a brush, a spatula, a brush, or the like, or by spraying. After the application, it may be left in the air to dry naturally, or may be dried by applying hot air.

As the alginate impression material used for the adhesive between the metal and the alginate impression material of the present invention, known alginate impression materials can be used without any limitation. More specifically, the alginate impression material is a mixture of a base paste containing alginate as a main component and a hardening material paste containing calcium sulfate as a main component, or an alginate containing calcium sulfate as a main component. Some powders are used by mixing with water. More specifically, potassium alginate, silica powder, potassium hydroxide, polyacryl,
It consists of a base material paste with a composition such as water and a hardener paste with a composition such as granular silica, liquid paraffin, zinc oxide, magnesium oxide, trisodium phosphate, potassium fluorotitanate, ultrafine silica, calcium sulfate, etc. Mixing and kneading material paste and hardening material paste, or powder of composition such as potassium alginate, silica powder, zinc oxide, magnesium oxide, trisodium phosphate, potassium fluoride titanate, calcium sulfate and water May be used after mixing and kneading.

According to the present invention, an adhesive comprising 1 to 25 parts by weight of a hydroxide or chloride of calcium and magnesium and 100 parts by weight of an organic solvent such as an alcohol can be dried easily.
It is preferable because it is easy to handle and has extremely high adhesive strength.

[0016]

According to the present invention, the metal tray and the alginate impression material are firmly bonded to each other by the adhesive between the metal and the alginate impression material. Therefore, in operation, the impression material cured body is
A highly accurate and stable impression can be obtained without partial peeling or deformation accompanying the metal tray.

The adhesive between the metal and the alginate impression material of the present invention is a suspension or a solution, and is used as a single component without being mixed with other components by coating or spraying. Excellent. Furthermore, for each additive component,
It does not contain viscous or curable materials that adhere to the metal tray, nor corrosive or soluble materials that attack the metal tray. Therefore, the adhesive itself between the metal and the alginate impression material does not accumulate on the metal tray or damage the metal tray.

[0018]

The present invention will be described below in more detail with reference to examples, but the present invention is not limited to these examples.

Example 1 A solution prepared by dissolving 3 parts by weight of anhydrous magnesium chloride in 100 parts by weight of ethanol was placed in a spray container and sprayed on a stainless steel plate tray in an amount of about 100 μl. After drying, the following alginate impression material was placed on the tray to obtain an impression. After the alginate impression material was cured, the tray and the cured product were integrally removed from the teeth and removed outside the oral cavity. It was confirmed that the tray and the cured body of the alginate impression material were firmly adhered to each other, and cohesive failure was caused when the tray was peeled off.

The alginate impression material has a composition of 3.6 parts by weight of potassium alginate, 9 parts by weight of silica powder, 0.3 parts by weight of potassium hydroxide, 1.8 parts by weight of polyacrylic acid, 100 parts by weight of water and the like. Base material, 17 parts by weight of granular silica, 50 parts by weight of liquid paraffin, 10 parts by weight of zinc oxide,
Trisodium phosphate 2 parts by weight, potassium fluorotitanate 9 parts by weight, ultrafine silica 5 parts by weight, calcium sulfate 1
A hardening material having a composition of 00 parts by weight or the like was used.

Example 2 A suspension of 10 parts by weight of calcium hydroxide (average particle size: 32 μm) in 100 parts by weight of ethanol was placed in a glass container with a lid. After shaking well, an appropriate amount was applied to a brass plate tray with a spatula and dried. A normal impression was obtained using this tray and the same alginate impression material as in Example 1, and after the alginate impression material was cured, the tray was removed. It was confirmed that the tray and the cured product of the alginate impression material were firmly adhered to each other, and that cohesive failure was caused when the tray was peeled off.

Example 3 A solution prepared by dissolving 14 parts by weight of magnesium chloride hexahydrate in 100 parts by weight of water was placed in a spray container. Put this on a plate tray made of brass and plated with chrome.
1 sprayed. Immediately, an impression was obtained on this tray using a commercially available alginate impression material “TOXSO A-1α” (trade name: manufactured by Tokuyama Corporation). After the alginate impression material was cured, the tray was removed, and it was confirmed that the tray and the cured body of the alginate impression material were firmly adhered to each other, and cohesive failure was caused when the tray was peeled off.

Example 4 A spray vessel was prepared by dissolving 14 parts by weight of magnesium chloride hexahydrate in 100 parts by weight of isopropyl alcohol. Put this in a stainless steel plate tray
Sprayed 0 μl and dried. The same alginate impression material as in Example 1 was placed on this tray, and a normal impression was obtained. After the alginate impression material was cured, the tray was removed, and it was confirmed that this tray and the cured product of the alginate impression material were firmly adhered to each other, and that cohesive failure was caused when the tray was peeled off.

Example 5 A suspension prepared by suspending and dispersing 5 parts by weight of calcium hydroxide (average particle size: 32 μm) and 0.5 parts by weight of a surfactant, calcium 2-ethylhexanoate, in 100 parts by weight of ethanol was used. Enter the glass container. After shaking well, an appropriate amount was applied to a stainless steel plate-shaped tray with a brush and dried. A normal impression was obtained using this tray and the same alginate impression material as in Example 1, and after the alginate impression material was cured, the tray was removed. It was confirmed that the tray and the cured body of the alginate impression material were adhered to each other, and that if they were to be peeled off, they would be partially cohesively broken.

Example 6 A solution dissolved in 2 parts by weight of calcium chloride dihydrate and 100 parts by weight of isopropyl alcohol was placed in a spray container. 66 μl of this in a stainless steel plate tray
After the spraying, the organic solvent was left to dry for 1 minute. In this tray, the alginate impression material "TOXSO A-1α" (trade name:
(Tokuyama Co., Ltd.) was used to take a normal impression. After the alginate impression material was cured, the tray was removed, and it was confirmed that this tray and the cured product of the alginate impression material were firmly adhered to each other, and that cohesive failure was caused when the tray was peeled off.

Example 7 A spray container was prepared by dissolving 1 part by weight of calcium chloride hexahydrate in 100 parts by weight of ethanol. Put this on a plate tray made of brass and plated with chrome.
0 μl was sprayed. Immediately, the same alginate impression material as in Example 1 was placed on this tray and an impression was taken. After the alginate impression material was cured, the tray was removed, and it was confirmed that the tray and the cured body of the alginate impression material were firmly adhered to each other, and cohesive failure was caused when the tray was peeled off.

Comparative Example 1 A normal impression was obtained using an untreated stainless steel plate-shaped tray and the same alginate impression material as in Example 1, and after the alginate impression material was cured, the tray was removed. Although the tray and the cured body of the alginate impression material were physically bonded, when peeled off, no adhesion was observed between them, and it was confirmed that interfacial destruction occurred in a seal state.

Comparative Example 2 An alginate impression material "TOXSO A-1α" (trade name, manufactured by Tokuyama Corporation) was used for each of two types of trays, untreated brass and a plate-shaped tray in which brass was plated with chromium. A normal impression was taken. After the alginate impression material was cured, the trays were removed and the state of each tray was checked. As a result, these trays and the cured body of the impression material were physically bonded, but when peeled off, no adhesion was observed between them and the interface was broken in a seal-like manner.

Claims (1)

[Claims] 1. An alginate impression material comprising: (a) 100 parts by weight of water and / or an organic solvent; and (a) 0.1 to 30 parts by weight of a hydroxide of an alkaline earth metal and / or a salt thereof. Glue.