JP4860223B2 - Tray cleaning composition for impression - Google Patents

Description

  The present invention relates to an impression used for the purpose of cleaning the surface of an impression tray after the cured dental alginate impression material, which has been raised on the impression tray and obtained an impression in the oral cavity, is peeled off from the impression tray. The present invention relates to a tray cleaning composition.

  In dental treatment for producing a dental prosthesis, an alginate impression material containing an alginate is widely used as an impression material for obtaining an intraoral impression. This alginate impression material consists of a powder composed mainly of an alginate, a gelling agent typified by gypsum, a gelation modifier and a filler, and is cured by mixing and kneading with water. , A mixture of alginate, gelation modifier, filler and water, mixed with kneaded powdery gelling agent and kneaded, and alginate dissolved in water A base paste in which a gelling modifier and a filler for imparting shapeability and hardness are added, and a curing agent paste comprising a mixture of calcium sulfate as a curing agent and a liquid substance such as liquid paraffin; There are some which are cured by mixing and kneading these two types of pastes.

  All of these alginate impression materials are mixed and kneaded in an impression tray, and then alginate impression material is inserted into the oral cavity and pressed and cured at the site where the impression is to be taken. It is taken out from the inside and used to make a gypsum model in the oral cavity by pouring gypsum mud mixed with kneaded water with water around the cured impression material. After the gypsum is cured, the cured alginate impression material must be removed from the impression tray and the cured alginate impression material adhering to the surface of the impression tray must be removed in order to reuse the impression tray There is. What is used at this time is an impression tray cleaning agent, which is currently used by dissolving powder in water and used in a liquid form as it is or diluted.

  Such impression tray cleaners include compounds that form water-soluble chelate compounds with calcium ions such as ethylenediaminetetraacetate, and phosphates such as disodium hydrogen phosphate, dipotassium hydrogen phosphate, and potassium orthosilicate. A composition comprising an alkali metal salt and / or an alkali metal of silicic acid (see, for example, Patent Document 1), ethylenediaminetetraacetic acid or a metal salt thereof, an alkali metal and an alkaline earth metal carbonate and percarbonate A combination of one or more salts and an alkali metal salt of an amphoteric surfactant of amino acids (for example, see Patent Document 2) has been proposed.

  However, since these impression tray cleaning agents do not sufficiently remove the alginate impression material, in practice, the alginate impression material cured before the impression tray is immersed in the impression tray cleaning agent is preliminarily provided. It was necessary to remove to some extent. In addition, it is usually uneconomical to dispose of an impression tray cleaner after a single use, so it is repeatedly used every time an impression is taken. However, currently used impression tray cleaners have a cleaning effect. It is not efficient because it does not last. In addition, most of the impression trays currently used in dentistry are net trays made of nickel-plated copper alloy and soldered, and metal trays such as tin-based alloys, stainless steel, and aluminum. When these impression trays are immersed in the impression tray cleaner, there is also a problem that the metal surface is corroded by the chelating agent in the impression tray cleaner.

  As described above, the conventional impression tray cleaning agent for removing mainly hardened alginate impression material does not have a sufficient cleaning effect, so that the impression tray is immersed in the impression tray cleaning agent to some extent in advance. It is necessary to remove the alginate impression material, and it is not efficient because the cleaning effect is not sustained in repeated use. Therefore, the cleaning of the impression tray is complicated, and the metal is particularly troublesome. There was a problem that the made impression tray was likely to corrode.

JP 2004-168815 A JP-A-8-3588

  The present invention eliminates the problems of the conventional impression tray cleaning agent as described above, and is superior in the removal effect of the alginate impression material than the conventional impression tray cleaning agent, and the cleaning effect is maintained even after repeated use. It is an object of the present invention to provide an impression tray cleaning agent that hardly causes corrosion of a metal impression tray.

  As a result of diligent research to solve the above-mentioned problems, the present inventors have found that phosphones are contained in an impression tray cleaner containing a chelating agent that forms a chelate compound in water with metal ions, as in the conventional impression tray cleaner. When a predetermined amount of acid compound is contained, the effect of removing hardened alginate is higher than that of conventional impression tray cleaners. The cleaning effect is maintained even after repeated use, and the metal impression tray is corroded. The present invention was completed by investigating that it can be made difficult.

  That is, the present invention provides one or more compounds selected from aminocarboxylic acid chelating agents, polyphosphoric acid chelating agents, hydroxycarboxylic acids, and hydroxycarboxylates, each of which forms a chelate compound in water with metal ions. An impression tray cleaning composition comprising 1 to 60% by weight of water and water as main components and further containing 0.1 to 30% by weight of a phosphonic acid compound.

  As the phosphonic acid compound used in the above-described impression tray cleaning composition according to the present invention, 1-hydroxyethylidene-1,1-diphosphonic acid, aminotriethylenephosphonic acid, N, N, N ′, N Either phosphonic acid such as' -tetrakis (phosphonomethyl) ethylenediamine or an alkali metal salt thereof can be preferably used.

  The impression tray cleaning composition according to the present invention is superior in the effect of removing an alginate impression material than the conventional impression tray cleaning agent, and the cleaning effect is maintained even after repeated use, and the metal impression tray is corroded. Also has the effect that it is difficult to cause.

  The impression tray cleaning composition according to the present invention is selected from aminocarboxylic acid-based chelating agents, polyphosphoric acid-based chelating agents, hydroxycarboxylic acids, and hydroxycarboxylates that form chelate compounds in metal ions and water, respectively. The main component is 1 to 60% by weight of one or more compounds and water, and further contains 0.1 to 30% by weight of a phosphonic acid compound.

  Examples of aminocarboxylic acid chelating agents that form chelate compounds with metal ions in water include ethylenediaminetetraacetic acid, nitrilotriacetic acid, diethylenetriaminepentaacetic acid, hydroxyethylethylenediaminetriacetic acid, methylglycine diacetic acid, and alkali metal salts of these compounds. Are preferably used.

  Tripolyphosphoric acid, metaphosphoric acid, pyrophosphoric acid, hexametaphosphoric acid and alkali metal salts thereof are preferably used as the polyphosphoric acid chelating agent that forms a chelate compound in water with metal ions.

  In addition, citric acid, tartaric acid, gluconic acid, and alkali metal salts thereof are preferably used as the hydroxycarboxylic acid and alkali metal salts thereof that form a chelate compound in water with metal ions.

  A substance that forms a chelate compound in water with these metal ions is contained for the purpose of dissolving a cured dental alginate impression material (calcium alginate), and the tray cleaning composition for impression according to the present invention Content in a thing is 1 to 60 weight%. If the content is less than 1% by weight, the effect of dissolving the cured dental alginate impression material is small, and if it exceeds 60% by weight, the concentration is too high, and the metal impression tray is particularly susceptible to corrosion. Absent.

  The tray cleaning composition for impression according to the present invention is composed mainly of the above metal ions, a substance that forms a chelate compound in water and water, and this water can be ion-exchanged water, distilled water, or the like. Alternatively, water sterilized with sodium hypozinc acid or the like may be used.

  The conventional impression tray cleaning agent, which is mainly composed of a metal ion, a substance that forms a chelate compound in water and water, has an alkali metal salt of phosphoric acid as in Patent Document 1 described above. Even if alkaline carbonates and surfactants are added as in Patent Document 2 described above, the effect of removing the cured alginate impression material is insufficient, and the cleaning effect is reduced even after repeated use. However, since the impression tray was corroded, the impression tray cleaning composition according to the present invention further contains 0.1 to 30% by weight of a phosphonic acid compound in order to improve these disadvantages.

  Examples of the phosphonic acid compound include phosphonic acids such as 1-hydroxyethylidene-1,1-diphosphonic acid, aminotriethylenephosphonic acid, N, N, N ′, N′-tetrakis (phosphonomethyl) ethylenediamine, and alkali metal salts thereof. Preferably used.

  If the content of the phosphonic acid compound is less than 0.1% by weight, the effect of removing the cured alginate impression material is not sufficient, and if it exceeds 30% by weight, the irritation to fingers is increased, which is not preferable.

  In addition, you may use well-known additives, such as surfactant, PH adjuster, a coloring agent, and a fragrance | flavor, in the range which does not impair the effect of this invention for the tray cleaning composition for impressions concerning this invention.

  EXAMPLES Next, although an Example is given and this invention is demonstrated in detail, it is not limited to these.

<Example 1>
Ethylenediaminetetraacetic acid tetrasodium 13 (wt%)
Trisodium citrate 15
Sodium gluconate 10
Aminotriethylenephosphonic acid 2
Distilled water 60
A 1-liter cleaning composition for an impression tray was prepared using each of the above components using a magnetic stirrer.

<Example 2>
Ethylenediaminetetraacetic acid trisodium 15 (wt%)
Sodium gluconate 10
Sodium tripolyphosphate 10
N, N, N ′, N′-tetrakis (phosphonomethyl) ethylenediamine 5
Distilled water 60
A 1-liter cleaning composition for an impression tray was prepared using each of the above components using a magnetic stirrer.

<Example 3>
Ethylenediaminetetraacetic acid tetrasodium 20 (wt%)
Trisodium citrate 20
1-hydroxyethylidene-1,1-diphosphonic acid 10
Distilled water 50
A 1-liter cleaning composition for an impression tray was prepared using each of the above components using a magnetic stirrer.

<Comparative example 1>
Ethylenediaminetetraacetic acid tetrasodium 15 (wt%)
Trisodium citrate 20
Distilled water 65
A 1-liter cleaning composition for an impression tray was prepared using each of the above components using a magnetic stirrer.

<Comparative example 2>
Ethylenediaminetetraacetic acid tetrasodium 15 (wt%)
Sodium tripolyphosphate 20
Distilled water 65
A 1-liter cleaning composition for an impression tray was prepared using each of the above components using a magnetic stirrer.

<Impression material removal test>
40 ml of distilled water was mixed and kneaded with 16.8 g of powder of alginate impression material (trade name: Aroma Fine DFIII, manufactured by GC Corporation), and injected into an impression tray (perforated, manufactured by GC Corporation). Next, this tray was inserted into the oral cavity and pressed against the inner surface of the upper jaw to obtain an impression of the entire upper jaw. After that, in order to evaluate the removability of the impression material, the tray is immersed in each of the above-described impression tray cleaning compositions without removing the cured impression material, and then the impression material is lightly removed from the tray with a finger. did. At this time, the impression material could be completely removed and the tray surface could be clearly observed was marked with ◯, the one with about half removed was marked with Δ, and the impression material adhered to the entire tray surface was marked with x.

<Durability test of cleaning agent>
Further, in order to evaluate the durability of the cleaning effect of the cleaning agent, the above-described impression material removal test was repeated 10 times for each new impression tray using each of the impression tray cleaning compositions described above, and adhered to the entire surface of the tray. The number of times until the impression material remained was examined.

<Test of corrosion resistance of impression tray>
Next, in order to evaluate the difficulty of erosion of the impression tray of the detergent, the above-described impression material removability test was repeated 10 times using each of the impression tray detergent compositions described above. In this test, the same impression tray was repeatedly used, and when an impression material could not be removed, it was mechanically removed using a spatula or the like. At this time, after repeated use 10 times, visually check the corrosion state of the impression tray, ○ if it has not changed from the initial state and blackening has occurred, for the impression that there is a metallic luster △ indicates that the tray surface is clearly blackened, and x indicates that the metal luster is lost and blackened.

  Table 1 shows the above test results, that is, the test results regarding the removability of the impression material, the durability of the cleaning effect of the cleaning agent, and the difficulty of corrosion of the impression tray.

As apparent from Table 1 above, Examples 1, 2, and 3 containing an aminocarboxylic acid chelating agent, a polyphosphoric acid chelating agent, a hydroxycarboxylic acid salt and water, and further containing a phosphonic acid compound. The impression tray cleaning composition according to the present invention is excellent in the removability of the cured alginate impression material, and even when used repeatedly, the removability does not decrease, and the impression tray is not blackened. While no corrosion occurs, the tray cleaning composition for impressions of Comparative Examples 1 and 2 containing only an aminocarboxylic acid chelating agent and a hydroxycarboxylate salt or polyphosphoric acid chelating agent and water are both durable. Not only is it inferior, but the removal of the cured alginate impression material is inadequate, and there are also problems with the durability of the cleaning agent and the difficulty of corrosion of the impression tray. Ri, the effect of the impression tray detergent composition according to the present invention containing from phosphonic acid compound The test result is evident.

Claims (2)

  1 to 60% by weight of one or more compounds selected from aminocarboxylic acid-based chelating agents, polyphosphoric acid-based chelating agents, hydroxycarboxylic acids, and hydroxycarboxylates, each forming a chelate compound in water with metal ions And a water-containing main component, and further 0.1 to 30% by weight of a phosphonic acid compound. The phosphonic acid compound is any one of phosphonic acids such as 1-hydroxyethylidene-1,1-diphosphonic acid, aminotriethylenephosphonic acid, N, N, N ′, N′-tetrakis (phosphonomethyl) ethylenediamine, and alkali metal salts thereof. The tray cleaning composition for impression according to claim 1.