JP5563226B2 - Composition for removing solid product formed on tooth surface - Google Patents

Composition for removing solid product formed on tooth surface Download PDF

Info

Publication number
JP5563226B2
JP5563226B2 JP2009014807A JP2009014807A JP5563226B2 JP 5563226 B2 JP5563226 B2 JP 5563226B2 JP 2009014807 A JP2009014807 A JP 2009014807A JP 2009014807 A JP2009014807 A JP 2009014807A JP 5563226 B2 JP5563226 B2 JP 5563226B2
Authority
JP
Japan
Prior art keywords
mass
phytic acid
less
composition
solid product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2009014807A
Other languages
Japanese (ja)
Other versions
JP2010150225A (en
Inventor
勤 磯部
義之 江下
正信 若狭
賢次 真砂
邦之 中西
範文 丹治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kao Corp filed Critical Kao Corp
Priority to JP2009014807A priority Critical patent/JP5563226B2/en
Priority to US13/129,291 priority patent/US8580234B2/en
Priority to CN200980146328.1A priority patent/CN102215813B/en
Priority to PCT/JP2009/005592 priority patent/WO2010058522A1/en
Publication of JP2010150225A publication Critical patent/JP2010150225A/en
Application granted granted Critical
Publication of JP5563226B2 publication Critical patent/JP5563226B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Cosmetics (AREA)

Description

本発明は、歯の光沢を向上させるための組成物に関する。   The present invention relates to a composition for improving tooth gloss.

人の歯が着色する原因は、主に歯石や歯垢、表面に種々の着色物が付着することによって生じる。このような歯の表面の着色原因を除去する手段としては、種々の物理的又は化学的方法が報告されている。物理的方法としては研磨除去による他に、n−ブチルエーテルやブチルブチレート等を用いて着色物を除去する方法(特許文献1、特許文献2)、或いは、セラミックベニヤ等を用いて歯を被覆し色調を改善する方法がある。化学的方法としては、ヒドロキシアパタイトを配合した口腔用組成物により再石灰化を促進する方法(特許文献3、特許文献4)、過酸化物を用いて酸化漂白する方法(特許文献5)、過酸化物に自己硬化性リン酸カルシウム化合物及びフッ素化合物等を配合した歯美白組成物を用いる方法(特許文献6)、液状化リン酸カルシウム系化合物を含有する口腔用組成物によりエナメル質の再石灰化を促進する方法(特許文献7)等が知られている。また、多価金属陽イオンとポリリン酸とを併用し歯石と汚れを防止する口腔用組成物(特許文献8)が知られている。   The cause of coloring of human teeth is mainly caused by adhesion of various colored substances to tartar, plaque, and the surface. Various physical or chemical methods have been reported as means for removing the cause of coloring of the tooth surface. As a physical method, in addition to removal by polishing, a method of removing a colored substance using n-butyl ether or butyl butyrate (Patent Document 1, Patent Document 2), or covering a tooth using a ceramic veneer or the like. There are ways to improve color tone. As chemical methods, a method for promoting remineralization with an oral composition containing hydroxyapatite (Patent Document 3, Patent Document 4), an oxidative bleaching method using a peroxide (Patent Document 5), A method of using a tooth whitening composition in which a self-curing calcium phosphate compound and a fluorine compound are mixed with an oxide (Patent Document 6), and an oral composition containing a liquefied calcium phosphate compound promotes remineralization of enamel. A method (Patent Document 7) and the like are known. Moreover, the composition for oral cavity (patent document 8) which uses a polyvalent metal cation and polyphosphoric acid together and prevents tartar and dirt is known.

しかし、セラミックベニヤ等を用いる方法は歯質を削除する必要があり、この方法の使用には歯科医による指導や処置が必要である。また、過酸化物を用いて酸化漂白する方法は、歯の酸化漂白が可能な高濃度の過酸化物を用いる必要があるため、専門家の指導に従って慎重に行う必要があるし、歯は白くなるものの光沢は低下する。また、専門家の指導の下でも、過酸化物により歯と歯ぐきへのダメージや知覚過敏を発生する場合がある。   However, the method using ceramic veneer or the like needs to delete the tooth substance, and the use of this method requires guidance and treatment by a dentist. In addition, the method of oxidative bleaching using peroxide requires the use of a high-concentration peroxide capable of oxidative bleaching of teeth, so it must be performed carefully according to expert guidance, and teeth are whitened. As a result, the gloss decreases. In addition, even under the guidance of experts, peroxides may cause damage to the teeth and gums and hypersensitivity.

一方、ヒドロキシアパタイト等のリン酸カルシウム系化合物を用いて歯の再石灰化を促進する方法は、主に、エナメル質表面をアパタイトにより補修することにより歯を健常化するものであり、美白効果については充分といえない。また、ポリリン酸と多価金属陽イオンを併用した場合も充分な美白効果があるとはいえない。そして、これらの従来の美白用歯磨剤では、歯に光沢、特に歯そのものに光沢を付与するものは提供されていない。   On the other hand, the method of promoting tooth remineralization using calcium phosphate compounds such as hydroxyapatite mainly makes the teeth healthy by repairing the enamel surface with apatite. I can't say. Moreover, it cannot be said that there is a sufficient whitening effect even when polyphosphoric acid and a polyvalent metal cation are used in combination. And, these conventional whitening dentifrices do not provide a tooth that imparts gloss to the teeth, particularly to the teeth themselves.

特開平1−203316号公報JP-A-1-203316 特開平1−104004号公報JP-A-1-104004 特開平1−305020号公報JP-A-1-305020 特開平9−202718号公報JP-A-9-202718 特公平6−8248号公報Japanese Patent Publication No. 6-8248 特開平11−116421号公報JP-A-11-116421 特開平8−319224号公報JP-A-8-319224 特開昭52―108029号公報JP-A-52-108029

本発明は、歯に優れた美白効果を与えるとともに光沢を付与できる組成物に関する。   The present invention relates to a composition capable of imparting an excellent whitening effect to a tooth and imparting gloss.

そこで本発明者は、走査型電子顕微鏡を用いて歯の表面状態と歯の白さ及び光沢(艶)との関係について検討してきたところ、歯の表面に生成する着色物質のほとんどは研磨剤による歯磨き等により除去できるが、高さ(厚み又は直径)が1μm未満の小さな固形生成物は従来の美白剤や研磨剤では適切に除去できないことが判明した。そしてさらに検討したところ、このような小さな固形生成物の有無が歯の光沢に大きな影響を与えており、この小さな固形生成物が、一定範囲のpHを有し、かつ多価カチオンを配合せず、フィチン酸を配合した組成物によって除去できること、さらにこの組成物を用いれば美白及び歯の光沢付与の両者が同時に達成できることを見出した。   Therefore, the present inventor has examined the relationship between the tooth surface state, tooth whiteness and luster (gloss) using a scanning electron microscope, and most of the coloring substances generated on the tooth surface are caused by abrasives. Although it can be removed by tooth brushing or the like, it has been found that a small solid product having a height (thickness or diameter) of less than 1 μm cannot be appropriately removed by a conventional whitening agent or abrasive. And further examination showed that the presence or absence of such a small solid product has a great influence on the gloss of the teeth, and this small solid product has a certain range of pH and does not contain a polyvalent cation. The present inventors have found that it can be removed by a composition containing phytic acid, and that using this composition, both whitening and glossing of teeth can be achieved simultaneously.

すなわち、本発明は、フィチン酸又はその塩を0.05〜18質量%含有し、多価カチオンを含有しないか又はフィチン酸に対して0.1倍モル未満含有し、水で30質量%に希釈したときのpHが5.5〜6.5である、歯の表面に生成した固形生成物除去用組成物を提供するものである。
また、本発明は、フィチン酸又はその塩を0.05〜5質量%含有し、多価カチオンを含有しないか又はフィチン酸に対して0.1倍モル未満含有し、水で30質量%に希釈したときのpHが5.5〜6.5であって、25℃における粘度が10〜300Pa・sである、歯の表面に生成した固形生成物除去用練歯磨剤を提供するものである。
さらに、本発明は、フィチン酸又はその塩を0.05〜18質量%含有し、多価カチオンを含有しないか又はフィチン酸に対して0.1倍モル未満含有し、水で30質量%に希釈したときのpHが5.5〜6.5である口腔用組成物を歯に適用する、歯の表面に生成した固形生成物除去による光沢付与方法を提供するものである。
なお、上記の水は、精製水であって、イオン交換水又は蒸留水を意味する。
That is, the present invention contains 0.05 to 18% by mass of phytic acid or a salt thereof, does not contain a polyvalent cation, or contains less than 0.1 times mol with respect to phytic acid, and is 30% by mass with water. The present invention provides a composition for removing a solid product produced on a tooth surface, which has a pH of 5.5 to 6.5 when diluted.
Moreover, this invention contains phytic acid or its salt 0.05-5 mass%, does not contain a polyvalent cation, or contains less than 0.1 times mole with respect to phytic acid, and is 30 mass% with water. A toothpaste for removing a solid product generated on the surface of a tooth, which has a pH of 5.5 to 6.5 when diluted and a viscosity of 10 to 300 Pa · s at 25 ° C. .
Furthermore, the present invention contains 0.05 to 18% by mass of phytic acid or a salt thereof, does not contain a polyvalent cation, or contains less than 0.1 times mol of phytic acid, and 30% by mass with water. An object of the present invention is to provide a method for imparting gloss by removing a solid product formed on the surface of a tooth, wherein a composition for oral cavity having a pH of 5.5 to 6.5 when diluted is applied to the tooth.
In addition, said water is purified water, Comprising: Ion exchange water or distilled water is meant.

本発明によれば、従来の歯磨剤では除去できなかった歯の表面に沈着した厚み1μm未満の小さな固形生成物が除去できるため、歯が白くなるとともに歯に光沢を付与することができる。   According to the present invention, since a small solid product having a thickness of less than 1 μm deposited on the surface of a tooth that could not be removed by a conventional dentifrice can be removed, the teeth become white and the teeth can be given luster.

ブラッシング処理前後の歯の表面を電子顕微鏡により観察した写真を示す(50倍)。The photograph which observed the surface of the tooth before and behind the brushing process with the electron microscope is shown (50 times). ブラッシング処理後の歯の表面を電子顕微鏡により観察した写真を示す(50000倍)。The photograph which observed the surface of the tooth after a brushing process with the electron microscope is shown (50000 times).

本発明の歯の表面に生成した厚み1μm未満の小さな固形生成物除去用組成物の有効成分はフィチン酸又はその塩であり、光沢付与剤として作用する。フィチン酸は、別名myo−イノシトール6リン酸ともいい、リン酸化合物である。種々のリン酸化合物の中で、本発明の光沢付与効果は、フィチン酸又はその塩が特に優れている。
その塩としては、ナトリウムやカリウム等のアルカリ金属塩やアンモニウム塩等が挙げられ、味、匂いの観点からアルカリ金属塩が好ましい。
The active ingredient of the composition for removing a small solid product having a thickness of less than 1 μm formed on the tooth surface of the present invention is phytic acid or a salt thereof, and acts as a gloss imparting agent. Phytic acid is also called myo-inositol hexaphosphate and is a phosphate compound. Among various phosphoric acid compounds, phytic acid or a salt thereof is particularly excellent in the gloss imparting effect of the present invention.
Examples of the salt include alkali metal salts such as sodium and potassium, ammonium salts, and the like, and alkali metal salts are preferable from the viewpoint of taste and odor.

本発明の固形生成物除去用組成物は、フィチン酸又はその塩を当該組成物中に0.05質量%〜18質量%含有するものである。
本発明の微小な固形生成物除去効果及び光沢付与効果を十分に発揮する観点から、フィチン酸又はその塩を当該組成物中に0.05質量%以上、好ましくは0.1質量%以上含むものであり、歯の脱灰を抑制する観点、味やきしみの観点から18質量%以下、好ましくは10質量%以下含むものである。本発明の固形生成物除去用組成物が練歯磨剤の場合には、味やきしみ等の使用感の観点からフィチン酸又はその塩を当該練歯磨剤中に0.05〜5質量%含有するものが好ましい。尚、本発明の固形生成物除去用組成物におけるフィチン酸又はその塩の含有量は、水酸化カリウム又は水酸化ナトリウムで中和して測定し、全量を酸に換算したものを採用する。
The composition for removing a solid product of the present invention contains phytic acid or a salt thereof in an amount of 0.05% by mass to 18% by mass.
From the viewpoint of sufficiently exhibiting the effect of removing the fine solid product and the effect of imparting gloss of the present invention, those containing phytic acid or a salt thereof in the composition in an amount of 0.05% by mass or more, preferably 0.1% by mass or more From the viewpoint of suppressing the decalcification of teeth and the viewpoint of taste and squeaking, it is 18% by mass or less, preferably 10% by mass or less. When the composition for removing a solid product of the present invention is a toothpaste, 0.05 to 5% by mass of phytic acid or a salt thereof is contained in the toothpaste from the viewpoint of feeling of use such as taste and creaking. Those are preferred. The content of phytic acid or a salt thereof in the solid product removing composition of the present invention is measured by neutralizing with potassium hydroxide or sodium hydroxide, and the total amount is converted to an acid.

本発明の固形生成物除去用組成物は、多価カチオンの含有量を低く抑えることが好ましい。多価カチオンは、フィチン酸を不溶性にしたり固形生成物の除去効果を低下させるため、当該効果の低下を防止するためである。その含有量はICP発光分析法(ICP発光分析装置:Perkin Elmer社 Optima 5300DV)で測定して多価カチオン合計としてフィチン酸に対して0.1倍モル未満が好ましく、さらに0.02倍モル以下が好ましい。すなわち、アルミニウム、カルシウム、マグネシウム、鉄、亜鉛等の多価カチオンを主に供給する剤は配合しないことが望ましく、多価カチオンを実質的にほとんど含まないものが好ましい。
また、カチオン性抗菌剤のほか、ゼオライト、活性炭等の吸着剤はフィチン酸による固形生成物除去効果を低下させるため、口腔用組成物中に0.001質量%未満であることが好ましく、さらに0.0001質量%以下であることが好ましく、実質的に含まないものが好ましい。
In the solid product removing composition of the present invention, the content of polyvalent cations is preferably kept low. This is because the polyvalent cation makes phytic acid insoluble or reduces the effect of removing the solid product, thereby preventing the reduction of the effect. The content thereof is preferably less than 0.1-fold mol of phytic acid as a total of polyvalent cations as measured by ICP emission spectrometry (ICP emission analyzer: Perma Elmer Optima 5300DV), and more preferably 0.02-fold mol or less. Is preferred. That is, it is desirable not to add an agent that mainly supplies polyvalent cations such as aluminum, calcium, magnesium, iron, and zinc, and those that substantially do not contain polyvalent cations are preferable.
In addition to cationic antibacterial agents, adsorbents such as zeolite and activated carbon reduce the solid product removal effect by phytic acid, so that it is preferably less than 0.001% by mass in the oral composition, and further 0 It is preferable that it is 0.0001 mass% or less, and the thing which does not contain substantially is preferable.

本発明の固形生成物除去用組成物は、水で30質量%に希釈したときのpHが5.5〜6.5である。
すなわち、当該組成物を口腔内に適用した際に固形生成物を除去し、かつ歯の表面の脱灰を抑制し光沢付与効果を奏する観点から、当該組成物を水で30質量%に希釈したときのpHを5.5以上、さらに5.8以上とすることが好ましく、固形生成物除去による光沢付与効果を十分に奏する観点から当該pHを6.5以下、さらに6.2以下とすることが好ましい。
当該pHは、例えば練歯磨きのように粘度の高い口腔用組成物の場合に正確にpHを測定できないことから、当該組成物を水で30質量%に希釈したものを当該組成物のpHとしている。水で30質量%に希釈したものを採用したのは、当該組成物の口腔内に適用した状態と想定したものである。なお、水は、精製水であって蒸留水又はイオン交換水を用いる。
組成物のpHを上記範囲に調整するには、pH調整剤を用いるのが好ましく、当該pH調整剤としては、フィチン酸による固形生成物除去を阻害せず、歯の脱灰を抑制できる範囲で、酢酸、フマル酸、リンゴ酸、乳酸、グルコン酸、酒石酸等の有機酸塩、フィチン酸以外のリン酸(例えば、オルトリン酸)、塩酸、硫酸等の無機酸塩、水酸化ナトリウム等の水酸化物、アンモニア又はアンモニア水、低級アルカノールアミン類、アルギニン、リジン等の塩基性アミノ酸等が挙げられ、これらを単独で又は2種以上組み合わせて用いてもよい。これらのpH調整剤のうち有機酸及び無機酸(フィチン酸を除く)の含有量は、フィチン酸の固形生成物除去効果を阻害しない観点からフィチン酸に対して質量比で5%以下であることが好ましく、さらに1%以下であることが好ましい。
The solid product removing composition of the present invention has a pH of 5.5 to 6.5 when diluted to 30% by mass with water.
That is, when the composition is applied to the oral cavity, the solid product is removed and the composition is diluted to 30% by mass with water from the viewpoint of suppressing the decalcification of the tooth surface and exerting a gloss imparting effect. The pH is preferably 5.5 or more, more preferably 5.8 or more, and the pH is 6.5 or less, and 6.2 or less from the viewpoint of sufficiently exerting the gloss imparting effect by removing the solid product. Is preferred.
Since the pH cannot be measured accurately in the case of a highly viscous oral composition such as toothpaste, the pH of the composition is obtained by diluting the composition to 30% by mass with water. . What was diluted to 30% by mass with water was assumed to be applied to the oral cavity of the composition. The water is purified water, and distilled water or ion exchange water is used.
In order to adjust the pH of the composition to the above range, it is preferable to use a pH adjuster, and as the pH adjuster, it does not inhibit solid product removal by phytic acid and can suppress tooth decalcification. Organic acids such as acetic acid, fumaric acid, malic acid, lactic acid, gluconic acid and tartaric acid, phosphoric acids other than phytic acid (for example, orthophosphoric acid), inorganic acid salts such as hydrochloric acid and sulfuric acid, and hydroxides such as sodium hydroxide And basic amino acids such as ammonia, aqueous ammonia, lower alkanolamines, arginine and lysine, etc., may be used alone or in combination of two or more. Among these pH adjusters, the content of organic acid and inorganic acid (excluding phytic acid) is 5% or less by mass ratio to phytic acid from the viewpoint of not inhibiting the solid product removal effect of phytic acid. Is preferable, and it is further preferable that it is 1% or less.

本発明の固形生成物除去用組成物は、さらにエリスリトールを含有するものが好ましい。エリスリトールは、光沢付与の観点から10〜60質量%含有するものが好ましく、さらに15〜60質量%が好ましく、特に20〜60質量%含有するのが好ましく、清涼感、味も考慮するとさらに20〜50質量%含有するのが好ましい。エリスリトールは使用感、清涼感及び味の観点から粒子径が35μm未満の粉末、もしくは粒子状のものを本発明の口腔用組成物に配合することができる。
エリスリトールの構造としては、L−エリスリトール、D−エリスリトール、meso−エリスリトールの3種の異性体が存在するが、本発明はこれらいずれの構造も使用できる。エリスリトールとしては、通常入手可能なものを使用でき、例えばブドウ糖を発酵させた後、再結晶して得られる結晶状のエリスリトール等が挙げられる。結晶状のエリスリトールは、市販品としては、日研化学(株)、三菱化学フーズ(株)、セレスター社、カーギル社製等のものが入手可能である。また、粒径の大きなものは、粉砕して粒子径を調整したものを使用することもできる。エリスリトールの粉砕には、ローラミル、ハンマーミル、高速度粉砕機、パルベライザーなどを使用するのが一般的であるが、粒度の調整が簡便で、かつ、生産効率にも優れる高速度粉砕機、ハンマーミルによる粉砕が好ましい。
The solid product removing composition of the present invention preferably further contains erythritol. From the viewpoint of imparting gloss, erythritol is preferably contained in an amount of 10 to 60% by mass, more preferably 15 to 60% by mass, particularly preferably 20 to 60% by mass, and further considering the refreshing feeling and taste, further 20 to 20%. It is preferable to contain 50 mass%. Erythritol can be blended into the oral composition of the present invention in the form of powder or particles having a particle diameter of less than 35 μm from the viewpoints of feeling of use, refreshment and taste.
As the structure of erythritol, there are three isomers of L-erythritol, D-erythritol, and meso-erythritol, and any of these structures can be used in the present invention. As erythritol, those which are usually available can be used, and examples thereof include crystalline erythritol obtained by recrystallization after fermentation of glucose. As crystalline erythritol, commercially available products such as those manufactured by Nikken Chemical Co., Ltd., Mitsubishi Chemical Foods Co., Ltd., Celestor, Cargill, etc. are available. Moreover, the thing with a large particle size can use what adjusted the particle diameter by grind | pulverizing. A roller mill, a hammer mill, a high-speed pulverizer, a pulverizer, etc. are generally used to pulverize erythritol, but a high-speed pulverizer and hammer mill that are easy to adjust the particle size and excellent in production efficiency. Is preferred.

本発明の固形生成物除去用組成物が歯磨剤の場合には、エリスリトールは、粉末又は粒子の状態で歯磨剤の中に分散しているのが望ましい。そのためには、エリスリトールは製造の最終工程に、粉末又は粒子の状態で投入することが好ましい。また、口腔内で冷涼感が長く続くという観点からは、粒子径は45μm以上355μm未満が好ましく、53μm以上300μm未満がより好ましく、75μm以上250μm未満がさらに好ましい。エリスリトールの粒子径が45μm以上のものは、口の中で瞬時に溶けることがなく、冷涼感が長く続き好ましい。また355μm未満のものは、口腔内で溶けやすく冷涼感を発揮することができる。   When the solid product removing composition of the present invention is a dentifrice, it is desirable that erythritol is dispersed in the dentifrice in the form of powder or particles. For this purpose, erythritol is preferably added in the form of powder or particles to the final production step. In addition, from the viewpoint that a cool sensation continues in the oral cavity, the particle size is preferably 45 μm or more and less than 355 μm, more preferably 53 μm or more and less than 300 μm, and even more preferably 75 μm or more and less than 250 μm. Erythritol particles having a particle size of 45 μm or more are preferred because they do not dissolve instantaneously in the mouth and a long cool feeling. Moreover, the thing less than 355 micrometers can melt | dissolve easily in an oral cavity, and can exhibit a cool feeling.

なお、エリスリトールの粒子径は以下のように測定される。
篩:JIS標準篩 φ75mm
目開き:上段より、それぞれ500μm、355μm、250μm、180μm、125μm、90μm及び45μmの目開きを有する篩の下に受器を有する。
振盪機:ミクロ型電磁振動機M−2型(筒井理化学器機(株))
方法:試料15gを500μm篩上に載せ、電磁振動機にて5分間分級する。250μm、180μm、125μm、90μm及び45μmの目開きを有する篩上に存在するエリスリトールの合計量を粒子径45μm以上355μm未満のエリスリトールとする。
The erythritol particle size is measured as follows.
Sieve: JIS standard sieve φ75mm
Opening: From the upper stage, a receiver is provided under a sieve having openings of 500 μm, 355 μm, 250 μm, 180 μm, 125 μm, 90 μm and 45 μm, respectively.
Shaker: Micro type electromagnetic vibrator M-2 type (Tsutsui Rikenki Co., Ltd.)
Method: Place 15 g of sample on 500 μm sieve and classify with electromagnetic vibrator for 5 minutes. The total amount of erythritol present on a sieve having openings of 250 μm, 180 μm, 125 μm, 90 μm and 45 μm is defined as erythritol having a particle size of 45 μm or more and less than 355 μm.

本発明において、歯の表面に生成した固形生成物とは、歯の表面に生成される厚み1μm未満の固形物をいい、これは電子顕微鏡(SEM:日立S−4800)により確認できる。歯の表面に生成される厚み1μm未満の固形物には、厚み500nm以下の固形物の集合も含まれる。この微小な固形生成物は、後述する図2(b)のSEMの写真から理解できるように、厚みが200nm以下、好ましくは100nm以下のナノレベルの固形生成物の堆積物であり、唾液中のタンパク質やカルシウム、リン等の成分の沈着によって形成し、形成した沈着物が堆積して形成されていると考えられる。また、この微小な固形生成物は、加齢や唾液分泌の減少による口腔内環境の悪化等によって沈着し生成されやすくなる。   In the present invention, the solid product produced on the tooth surface refers to a solid product produced on the tooth surface and having a thickness of less than 1 μm, which can be confirmed by an electron microscope (SEM: Hitachi S-4800). The solid material having a thickness of less than 1 μm generated on the tooth surface includes a collection of solid materials having a thickness of 500 nm or less. As can be understood from the SEM photograph of FIG. 2B described later, this fine solid product is a deposit of nano-level solid product having a thickness of 200 nm or less, preferably 100 nm or less. It is thought that it is formed by depositing components such as protein, calcium, and phosphorus, and the formed deposit is deposited. In addition, this fine solid product is likely to be deposited and generated due to deterioration of the oral environment due to aging or decrease in saliva secretion.

前記のように、本発明組成物を用いれば、歯の表面の高さ1μm未満の固形生成物、さらに0.5μm以下の固形生成物を歯の表面に凸凹を形成せずに除去でき、その結果歯に良好な光沢が付与される。このように、本発明組成物によれば、歯の表面にダメージを与えずにナノレベルの固形生成物を選択的に除去できるので、歯の表面を滑らかにして光沢を付与できる顕著な効果を奏する。   As described above, if the composition of the present invention is used, a solid product having a tooth surface height of less than 1 μm, and further a solid product of 0.5 μm or less can be removed without forming irregularities on the tooth surface. As a result, good gloss is imparted to the teeth. As described above, according to the composition of the present invention, since the nano-level solid product can be selectively removed without damaging the tooth surface, the tooth surface can be smoothed and gloss can be imparted. Play.

また、本発明の固形生成物除去用組成物には、フィチン酸又はその塩による光沢付与効果を阻害しない範囲(含有量、剤形等)でフッ化ナトリウム、フッ化カリウム、フッ化アンモニウム、モノフルオロリン酸ナトリウム等のフッ化物(フッ素イオン供給化合物)を配合してもよい。フッ化物は、当該組成物中に含有しないか、又はフッ素原子換算で500ppm未満であることが好ましく、さらに300ppm以下を含有するものが好ましい。   Moreover, the composition for removing a solid product of the present invention includes sodium fluoride, potassium fluoride, ammonium fluoride, mono, within a range (content, dosage form, etc.) that does not impair the gloss-imparting effect of phytic acid or a salt thereof. You may mix | blend fluorides (fluorine ion supply compound), such as sodium fluorophosphate. The fluoride is not contained in the composition or is preferably less than 500 ppm in terms of fluorine atoms, and more preferably contains 300 ppm or less.

本発明の固形生成物除去用組成物には、前記成分の他、例えば発泡剤、発泡助剤、研磨剤、湿潤剤、粘稠剤、ゲル化剤、粘結剤、増量剤、甘味剤、保存料、殺菌剤、薬効成分、顔料、色素、香料等を適宜含有させ、種々の剤形に応じ当該組成物を製造することができる。また、従来用いられた美白成分であるポリエチレングリコールなどの併用も制限されない。   In addition to the above components, the solid product removing composition of the present invention includes, for example, a foaming agent, a foaming aid, an abrasive, a wetting agent, a thickening agent, a gelling agent, a binder, a bulking agent, a sweetening agent, Preservatives, bactericides, medicinal ingredients, pigments, dyes, fragrances and the like can be appropriately contained, and the composition can be produced according to various dosage forms. Moreover, combined use, such as polyethyleneglycol which is a whitening component used conventionally, is not restrict | limited.

本発明の固形生成物除去用組成物は、例えば溶液状、ゲル状、ペースト状といった剤形に調製され、粉歯磨剤、潤性歯磨剤、練歯磨剤、液状歯磨剤、洗口剤等の口腔用組成物、或いは、チューインガム、トローチ、キャンディ等の食品として用いたり、シート材や、布、繊維等に含浸させたものをデンタルフロス等の口腔衛生器具として用いることができる。
それらどの剤形においてもポリエチレングリコール、プロピレングリコール、グリセリン、ソルビトール、マルチトール、キシリトール、ラクチトール等を湿潤剤あるいは粘稠剤等の目的で含有させることができる。
The composition for removing a solid product of the present invention is prepared into a dosage form such as a solution, a gel, or a paste, for example, a powder dentifrice, a moisturizing dentifrice, a toothpaste, a liquid dentifrice, a mouthwash, etc. It can be used as a composition for oral cavity or food such as chewing gum, troche and candy, or can be used as an oral hygiene device such as dental floss by impregnating sheet material, cloth, fiber or the like.
In any of these dosage forms, polyethylene glycol, propylene glycol, glycerin, sorbitol, maltitol, xylitol, lactitol and the like can be contained for the purpose of a wetting agent or a thickening agent.

また、溶液状組成物の粘稠剤あるいはゲル状組成物のゲル化剤としてさらにはペースト状組成物とする場合の粘結剤としてカルボキシメチルセルロースナトリウム、ヒドロキシエチルセルロース、カルボキシビニルポリマー、キサンタンガム、カラギーナン、アルギン酸ナトリウム、ヒドロキシプロピルセルロース、グアガム、コンドロイチン硫酸ナトリウム等を1種又は2種以上含有させることができる。このうち、フィチン酸又はその塩の光沢付与効果を十分に発揮させる観点からアルギン酸ナトリウム以外の粘結剤を選択することが好ましい。
また、特に緩衝液系の為に高塩濃度となる場合は、非イオン性のポリマー、即ちヒドロキシエチルセルロース、グアガム、ヒドロキシプロピルセルロース等を1種又は2種以上含有させることもできる。
Further, as a thickening agent for a solution-like composition or a gelling agent for a gel-like composition, and as a binder for a paste-like composition, sodium carboxymethylcellulose, hydroxyethylcellulose, carboxyvinyl polymer, xanthan gum, carrageenan, alginic acid Sodium, hydroxypropyl cellulose, guar gum, sodium chondroitin sulfate and the like can be contained alone or in combination. Among these, it is preferable to select a binder other than sodium alginate from the viewpoint of sufficiently exerting the gloss imparting effect of phytic acid or a salt thereof.
In particular, in the case of a high salt concentration due to the buffer system, one or more kinds of nonionic polymers, that is, hydroxyethyl cellulose, guar gum, hydroxypropyl cellulose and the like can be contained.

本発明の組成物が練歯磨剤の場合には、使用感の観点からフィチン酸又はその塩の含有量は0.05〜5質量%であるものが好ましい。当該練歯磨剤は、十分な光沢付与効果の観点から25℃における粘度が10〜300Pa・sであるものが好ましく、さらに20〜250Pa・s、特に30〜200Pa・sであるのが好ましい。この範囲であると、フィチン酸の含有量が5質量%以下であっても、口中での分散性が高まりによってフィチン酸が素早く拡散して歯の表面に堆積した微小な固形生成物へ有効に作用する。粘度が低すぎる場合には、歯ブラシから垂れてしまうために操作性が悪くなり、粘度が高すぎる場合には口中での分散性が低くなるため、十分な固形生成物除去効果、光沢付与効果が得られなくなる。ここで、粘度はヘリパス型粘度計を用いて、測定温度を25℃とし、ロータC、2.5r/min、1分間の測定条件により測定できる。   When the composition of the present invention is a toothpaste, the content of phytic acid or a salt thereof is preferably 0.05 to 5% by mass from the viewpoint of use feeling. The toothpaste preferably has a viscosity at 25 ° C. of 10 to 300 Pa · s, more preferably 20 to 250 Pa · s, and particularly preferably 30 to 200 Pa · s, from the viewpoint of a sufficient gloss imparting effect. Within this range, even if the content of phytic acid is 5% by mass or less, the dispersibility in the mouth is enhanced, so that phytic acid is quickly diffused and effectively applied to the fine solid product deposited on the tooth surface. Works. When the viscosity is too low, the operability is deteriorated because it hangs down from the toothbrush, and when the viscosity is too high, dispersibility in the mouth is lowered, so that sufficient solid product removal effect and gloss imparting effect are obtained. It can no longer be obtained. Here, the viscosity can be measured using a helipath type viscometer at a measurement temperature of 25 ° C. and measurement conditions of rotor C, 2.5 r / min, and 1 minute.

本発明の組成物が歯磨剤の場合には、顆粒を配合することもできるが、歯のエナメル質表面の微小な凸凹形成を抑制し、光沢形成を阻害しない観点から、顆粒を配合しないか又は乾燥状態で崩壊強度が10g/個以下である顆粒、好ましくは水分共存下で崩壊強度が10g/個以下である顆粒を含有することが好ましい。また、本発明の光沢形成効果を阻害しない範囲で研磨剤を含有することも可能であり、例えば、含水シリカ、無水シリカ、シリカゲル等のシリカ系研磨剤等を用いることが好ましい。   When the composition of the present invention is a dentifrice, a granule can be blended, but from the viewpoint of suppressing the formation of minute irregularities on the tooth enamel surface and not inhibiting the gloss formation, the granule is not blended or It is preferable to contain granules having a disintegration strength of 10 g / piece or less in a dry state, preferably granules having a disintegration strength of 10 g / piece or less in the presence of moisture. Moreover, it is also possible to contain an abrasive within a range that does not impair the gloss forming effect of the present invention. For example, it is preferable to use a silica-based abrasive such as hydrous silica, anhydrous silica, or silica gel.

本発明の組成物を歯に適用するには、そのまま適用してもよいし、水又は唾液等で30質量%程度まで希釈した状態で適用する場合の両者が含まれる。すなわち、洗口剤のような場合には希釈することなく歯に適用される。一方、練歯磨剤等の場合には唾液により30質量%程度まで希釈された状態で歯に適用されることになる。
このような固形生成物除去用組成物を人の歯に、10秒から10時間(洗口剤であれば10秒以上、固形生成物除去用組成物が歯磨剤であれば30秒以上、塗布具であれば5分以上)、例えば1日に1〜5回、好ましくは1週間から16週間適用すると、歯のエナメル質表面のナノレベル(1μm未満)の固形生成物を選択的に取り除くことによって、歯のエナメル質そのものへのダメージを抑えつつ歯のエナメル質表面をナノレベルで滑らかにし、エナメル質表面からの反射光を増やすことによって、歯そのものの自然な光沢を得ることができる。即ち、長時間の使用、又は繰り返しの使用によっても、歯のエナメル質表面へのダメージは抑えつつ、自然な艶や光沢のある歯を得ることができる。
In order to apply the composition of the present invention to teeth, it may be applied as it is, or includes both cases where it is applied in a state diluted to about 30% by mass with water or saliva. That is, in the case of a mouthwash, it is applied to teeth without dilution. On the other hand, in the case of a toothpaste, etc., it is applied to the teeth in a state diluted to about 30% by mass with saliva.
Applying such a solid product removing composition to human teeth for 10 seconds to 10 hours (10 seconds or more for a mouthwash, 30 seconds or more for a solid product removing composition for a dentifrice) 5 minutes or more), for example 1 to 5 times a day, preferably 1 to 16 weeks, to selectively remove nano-level (less than 1 μm) solid products on the tooth enamel surface Therefore, it is possible to obtain a natural gloss of the tooth itself by suppressing the damage to the tooth enamel itself while smoothing the surface of the tooth enamel at the nano level and increasing the reflected light from the surface of the enamel. That is, even with long-time use or repeated use, natural gloss and glossy teeth can be obtained while suppressing damage to the enamel surface of the teeth.

以下の実施例において、%は質量%を意味する。   In the following examples,% means mass%.

試験例1:組成物による処理後の歯の表面状態
表1にフィチン酸1%含有の練歯磨剤の各成分及びその含有量を示す。これらの成分を混合した練歯磨剤(実施例1)を試験溶液として調製した。実施例1の試験溶液中のマグネシウム、アルミニウム、カルシウム等の多価カチオンはIPC発光分析法で測定してフィチン酸に対して0.1倍モル未満であった。比較例1はフィチン酸を含有しない歯磨剤を試験溶液として調製した。
実施例1の試験溶液のpHは、イオン交換水で30質量%に希釈したときのpHである。比較例1はフィチン酸を含有しないためpHは中性であり、水酸化カリウムによるpH調整を行わなかった。試験に用いる歯は、ヒト歯(抜去歯)で研磨等による汚れを落とす処理がされていないものを用いた。
Test Example 1: Surface condition of teeth after treatment with composition Table 1 shows each component and content of a toothpaste containing 1% phytic acid. A toothpaste (Example 1) in which these components were mixed was prepared as a test solution. The polyvalent cations such as magnesium, aluminum, calcium and the like in the test solution of Example 1 were less than 0.1-fold mol with respect to phytic acid as measured by IPC emission spectrometry. In Comparative Example 1, a dentifrice containing no phytic acid was prepared as a test solution.
The pH of the test solution of Example 1 is the pH when diluted to 30% by mass with ion-exchanged water. Since Comparative Example 1 did not contain phytic acid, the pH was neutral, and the pH was not adjusted with potassium hydroxide. The teeth used for the test were human teeth (extracted teeth) that were not treated to remove dirt due to polishing or the like.

ブラッシング処理を次の手順で行った。各試験溶液にヒト歯(抜去歯)を室温2分間浸漬しながら歯ブラシ(花王株式会社製クリアクリーン マルチケア歯ブラシ かたさ:ふつう)によるブラッシングを行い。その後、室温の人工唾液に8時間浸漬した。このサイクルを28回実施した。なお、人工唾液は、塩化カルシウム(1.0mM)、リン酸水素カリウム(0.9mM)、HEPES(4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid )(2.0mM)の水溶液を水酸化カリウムでpH=7に調整したものを使用した。この場合の28回サイクル前後輝度の値の変化Δ輝度を測定した。当該変化Δ輝度は、(浸漬後の輝度―浸漬前の輝度)から求めた。なお、ヒト歯(抜去歯)は3個を用い、Δ輝度は3個のヒト歯の測定値の平均値により評価した。   The brushing process was performed in the following procedure. Brush human teeth (extracted teeth) in each test solution with a toothbrush (clear clean multi-care toothbrush hardness: normal) for 2 minutes at room temperature. Then, it was immersed in artificial saliva at room temperature for 8 hours. This cycle was performed 28 times. Artificial saliva is an aqueous solution of calcium chloride (1.0 mM), potassium hydrogen phosphate (0.9 mM), and HEPES (4- (2-hydroxyethyl) -1-piperazineethanesulfonic acid) (2.0 mM) with potassium hydroxide. What was adjusted to 7 was used. In this case, the change in luminance value Δ before and after the 28th cycle was measured. The change Δ luminance was obtained from (luminance after immersion−luminance before immersion). In addition, three human teeth (extracted teeth) were used, and Δ luminance was evaluated by an average value of measured values of the three human teeth.

輝度の測定法としては、偏光を利用した画像解析から表面反射光強度を測定する方法を用いた。評価用画像を撮影する装置として、カメラはデジタル一眼レフカメラNikon D70、レンズはAi AFマイクロ・ニッコール105mm F2.8D、ストロボ発光はワイヤレス・リモート・スピードライトSB-R200(いずれもニコン製)を組合せて設置したものを用いた。スピードライトの発光部及びレンズの前にプラスチック偏光板(エドモンド製)を透過軸が30度交差するように配置して撮影した。撮影画像はAdobe Photoshop CS3(アドビシステム製)を用いてハイライト部分の平均輝度を求めた。輝度は数値が大きいほど光沢が増したことを意味する。   As a luminance measurement method, a method of measuring the surface reflected light intensity from image analysis using polarized light was used. Nikon D70 digital SLR camera, Ai AF micro Nikkor 105mm F2.8D lens, wireless remote speedlight SB-R200 (both made by Nikon) for strobe lighting The installed one was used. Photographs were taken with a plastic polarizing plate (manufactured by Edmond) placed in front of the light emitting part of the speedlight and the lens so that the transmission axes intersected 30 degrees. The average brightness of the highlight portion of the captured image was obtained using Adobe Photoshop CS3 (manufactured by Adobe System). Luminance means that the larger the value, the higher the gloss.

表1の表面状態の凸凹は、上記の28回サイクルのブラッシング処理後の歯をルーペ(倍率10倍)により肉眼で観察して評価したものである。一方、図1、図2は、上記のブラッシング処理前後の歯の表面を電子顕微鏡(SEM:日立S−4800)により観察した写真を示し、(a)実施例1の試験溶液による上記ブラッシング処理後、(b)比較例1の試験溶液による上記ブラッシング処理後、(c)試験溶液を使用せずイオン交換水に浸漬しながら上記ブラッシング処理後、(d)上記のブラッシング処理前の歯表面の写真であって、図1は50倍、図2は50000倍の写真である。
図1に示すように、試験溶液を使用せずブラッシングのみの処理後の写真(c)の歯表面には1mmよりも小さい(μmレベル)の固形生成物が確認できる。比較例1の試験溶液を用いたブラッシング処理後の写真(b)には、一部にくすみのように固形生成物が残っていることが認められる。実施例1の試験溶液を用いたブラッシング処理後の写真(a)は、なめらかで固形生成物は認められない。一方、図2の写真では、比較例1の試験溶液を用いたブラッシング処理後の写真(b)には、1μm未満の固形生成物が認められるが、実施例1の試験溶液を用いたブラッシング処理後の写真(a)には、1μm未満の固形生成物は殆ど認められない。そして、比較例1の試験溶液によるブラッシング処理後のヒト歯は輝度が殆どかわらないのに対して、実施例1によるブラッシング処理後のヒト歯はΔ輝度が高く、光沢付与効果が認められた。また、実施例1によるブラッシング処理後のヒト歯は、比較例1による処理後のヒト歯よりも白く見えた。従って、歯の表面に生成されている1μm未満の固形生成物を除去することで、歯が白くなるだけでなく、全反射光を増加させ、高い輝度、即ち光沢や艶を得ることができると考えられる。
The unevenness of the surface state in Table 1 is evaluated by observing the teeth after the brushing treatment of the above-mentioned 28 cycles with the naked eye using a magnifying glass (magnification 10 times). On the other hand, FIG. 1, FIG. 2 shows the photograph which observed the surface of the tooth | gear before and behind said brushing process with the electron microscope (SEM: Hitachi S-4800), (a) After the said brushing process by the test solution of Example 1 (B) After the brushing treatment with the test solution of Comparative Example 1, (c) After the brushing treatment while being immersed in ion-exchanged water without using the test solution, (d) A photograph of the tooth surface before the brushing treatment. FIG. 1 is a photograph taken 50 times, and FIG. 2 is a photograph taken 50000 times.
As shown in FIG. 1, a solid product smaller than 1 mm (μm level) can be confirmed on the tooth surface of the photograph (c) after the treatment using only the brushing without using the test solution. In the photograph (b) after the brushing treatment using the test solution of Comparative Example 1, it is recognized that a solid product remains as a part of the dullness. The photograph (a) after the brushing treatment using the test solution of Example 1 is smooth and no solid product is observed. On the other hand, in the photograph of FIG. 2, although a solid product of less than 1 μm is observed in the photograph (b) after the brushing treatment using the test solution of Comparative Example 1, the brushing treatment using the test solution of Example 1 In the later photograph (a), almost no solid product of less than 1 μm is observed. The human teeth after the brushing treatment with the test solution of Comparative Example 1 hardly changed in luminance, whereas the human teeth after the brushing treatment according to Example 1 had a high Δ luminance and a gloss imparting effect was recognized. Further, the human teeth after the brushing treatment according to Example 1 looked whiter than the human teeth after the treatment according to Comparative Example 1. Therefore, by removing the solid product of less than 1 μm generated on the tooth surface, not only the teeth become white, but also the total reflected light can be increased and high brightness, that is, gloss and gloss can be obtained. Conceivable.

試験例2:他の有機酸含有量との関係
表2にフィチン酸1%含有の練歯磨剤の各成分及びその含有量を示した。これらの成分を混合した練歯磨剤を試験溶液として調製した。試験溶液中のマグネシウム、アルミニウム等の多価カチオンはIPC発光分析法で測定してフィチン酸に対して0.1倍モル未満であった。
各練歯磨剤は、イオン交換水で30質量%に希釈して試験溶液とし、ヒト歯をブラッシング処理を行わず室温で48時間試験溶液に浸漬し、浸漬前後の輝度を測定した。浸漬前後の輝度の変化Δ輝度は、(浸漬後の輝度―浸漬前の輝度)から求めた。ヒト歯は上記試験例1と同じく研磨等の汚れ除去の処理がされていない抜去歯を用い、試験溶液による浸漬前後の輝度の変化Δ輝度の測定、歯の表面の凸凹の観察は、上記試験例1と同様にして行った。
Test Example 2: Relationship with Other Organic Acid Content Table 2 shows each component and content of a toothpaste containing 1% phytic acid. A toothpaste in which these components were mixed was prepared as a test solution. The polyvalent cations such as magnesium and aluminum in the test solution were less than 0.1 times mol of phytic acid as measured by IPC emission spectrometry.
Each toothpaste was diluted to 30% by mass with ion-exchanged water to obtain a test solution. Human teeth were immersed in the test solution for 48 hours at room temperature without brushing, and the luminance before and after immersion was measured. Change in luminance before and after immersion ΔBrightness was determined from (luminance after immersion−luminance before immersion). The human teeth are extracted teeth that have not been subjected to dirt removal treatment such as polishing as in Test Example 1 above, and the change in luminance before and after immersion with the test solution is measured. Performed as in Example 1.

表3は、表2中の実施例1における練歯磨剤の試験溶液と、実施例1中のフィチン酸1質量%を、それぞれオルトリン酸1質量%、ポリリン酸1質量%、フィチン酸とポリリン酸の混合物1質量%に代えた以外は実施例1と同じ各成分及び配合割合で調製した試験溶液について、試験例2と同様に各試験溶液にヒト歯を室温48時間浸漬し、浸漬前後に測定した輝度の変化Δ輝度、及び浸漬後の抜去歯の表面状態を示す。表3に示すように、ポリリン酸、及びポリリン酸とフィチン酸の混合物を含有する試験溶液で処理したヒト歯は、エナメル質の表面に凸凹が観察されるダメージが認められ、Δ輝度がマイナスとなった(光沢が減少している)。オルトリン酸を含有する試験溶液で処理をしたヒト歯は、エナメル質の表面へのダメージは殆ど観察されなかったが、歯の表面に固形生成物が残っておりΔ輝度の値が小さく光沢付与効果が認められなかった。一方、フィチン酸はΔ輝度の値が大きく歯の表面もなめらかでダメージが認められず、高い光沢付与効果が認められた。なお、ピロリン酸、メタリン酸についてもポリリン酸と同様に試験したが、歯の表面にダメージを与えるため光沢付与効果は認められなかった。
従って、フィチン酸がこれらのリン酸化合物の中で光沢付与効果に最も優れており、全反射光の増加により歯表面の固形生成物の選択的除去効果が高いと考えられる。さらにフィチン酸を含有する試験溶液を対象に以下の試験を行った。
Table 3 shows the toothpaste test solution in Example 1 in Table 2 and 1% by mass of phytic acid in Example 1, 1% by mass of orthophosphoric acid, 1% by mass of polyphosphoric acid, phytic acid and polyphosphoric acid, respectively. For test solutions prepared with the same components and blending ratios as in Example 1 except that the mixture was replaced by 1% by mass, human teeth were immersed in each test solution for 48 hours at room temperature in the same manner as in Test Example 2 and measured before and after immersion. The luminance change Δ luminance and the surface condition of the extracted tooth after immersion are shown. As shown in Table 3, human teeth treated with a test solution containing polyphosphoric acid and a mixture of polyphosphoric acid and phytic acid were found to be damaged with irregularities observed on the surface of the enamel, and Δ luminance was negative. (Gloss is decreasing). Human teeth treated with a test solution containing orthophosphoric acid showed almost no damage to the enamel surface, but a solid product remained on the tooth surface, resulting in a small Δ luminance value and a gloss-enhancing effect. Was not recognized. On the other hand, phytic acid had a large Δ luminance value, and the tooth surface was smooth and no damage was observed, and a high gloss imparting effect was observed. In addition, pyrophosphoric acid and metaphosphoric acid were also tested in the same manner as polyphosphoric acid, but no gloss imparting effect was observed because the surface of the teeth was damaged.
Therefore, phytic acid is most excellent in the effect of imparting gloss among these phosphoric acid compounds, and it is considered that the selective removal effect of the solid product on the tooth surface is high due to the increase in total reflected light. Furthermore, the following tests were conducted on test solutions containing phytic acid.

試験例3:組成物のpH及び組成物のフィチン酸含有量
(1)組成物及び試験対象物の調製
表2に実施例1〜10、表4に比較例2〜9の練歯磨剤の各成分及びその含有量を示す。これらの練歯磨剤(試験溶液)のpHは、イオン交換水で30質量%に希釈したときのpHである。
練歯磨剤中のフィチン酸の含有量を1質量%とし、このpHはイオン交換水で30質量%に希釈したときに、3.0、4.0、5.0、5.5、6.0、6.5、7.0、8.0に調整した練歯磨剤の試験溶液(実施例1〜3及び比較例2〜6)を調製した。これらの各試験溶液中のマグネシウム、アルミニウム等の多価カチオンの含有量はIPC発光分析法で測定してフィチン酸に対して0.1倍モル未満であった。
また、練歯磨剤中のフィチン酸の含有量を0、0.05、0.1、10、18、19、20質量%とし、このpH6.0に調整した練歯磨剤の各試験溶液(実施例4〜7及び比較例7〜9)を調製した。フィチン酸の含有量1質量%は実施例2と対象とした。これらの各試験溶液中のマグネシウム、アルミニウム等の多価カチオンの含有量もIPC発光分析法で測定してフィチン酸に対して0.1倍モル未満であった。
試験に用いるヒト歯の状態は試験例1と同様であり、それぞれの試験溶液による浸漬前後の輝度の変化Δ輝度の測定、歯の表面状態(表面の凸凹)の測定は、上記試験例1と同様にして行った。
比較例2〜4に示すようにpHが5.5より低い領域では歯の表面に凸凹が形成され、歯の表面の輝度は低下している。一方、比較例5、6のpHが7.0以上の試験溶液で処理した歯は、表面に凸凹は形成されないが、固形生成物除去効果は認められず、Δ輝度は低く光沢は得られなかった。これに対して本発明の固形生成物除去用組成物は、pHが5.5以上6.5以下であって、この条件では歯が白く見えるだけでなくΔ輝度は十分に大きく、高い光沢付与効果を示し、SEMによる観察でも滑らかな表面が観察された。
このように、本発明の示すpHが5.5〜6.5の領域のフィチン酸(イノシトール6リン酸)及びその塩は、エナメル質の表面にダメージを殆ど与えず、表面に生成された1μm未満の固形生成物を選択的に除去することができる。
Test Example 3: Composition pH and Phytic Acid Content of Composition (1) Preparation of Composition and Test Object Table 2 Examples 1-10 in Table 2, Table 4 Comparative Examples of Toothpaste in Comparative Examples 2-9 Ingredients and their contents are shown. The pH of these toothpastes (test solutions) is the pH when diluted to 30% by mass with ion-exchanged water.
When the content of phytic acid in the toothpaste is 1% by mass and this pH is diluted to 30% by mass with ion-exchanged water, 3.0, 4.0, 5.0, 5.5, 6. Toothpaste test solutions (Examples 1 to 3 and Comparative Examples 2 to 6) adjusted to 0, 6.5, 7.0, and 8.0 were prepared. The content of polyvalent cations such as magnesium and aluminum in each of these test solutions was less than 0.1 times mol of phytic acid as measured by IPC emission spectrometry.
Further, each test solution of toothpaste adjusted to pH 6.0 with the content of phytic acid in the toothpaste being 0, 0.05, 0.1, 10, 18, 19, 20% by mass (implemented) Examples 4-7 and comparative examples 7-9) were prepared. A phytic acid content of 1% by mass was considered as Example 2. The content of polyvalent cations such as magnesium and aluminum in each of these test solutions was also less than 0.1 times mol with respect to phytic acid as measured by IPC emission spectrometry.
The condition of the human teeth used in the test is the same as in Test Example 1. The change in luminance before and after immersion with each test solution Δ, the measurement of the tooth surface condition (surface irregularities) are the same as in Test Example 1 above. The same was done.
As shown in Comparative Examples 2 to 4, in the region where the pH is lower than 5.5, unevenness is formed on the tooth surface, and the brightness of the tooth surface is lowered. On the other hand, teeth treated with a test solution having a pH of 7.0 or higher in Comparative Examples 5 and 6 do not have unevenness on the surface, but no solid product removal effect is observed, and Δ luminance is low and gloss is not obtained. It was. On the other hand, the solid product removing composition of the present invention has a pH of 5.5 or more and 6.5 or less, and not only teeth appear white under these conditions but also Δ luminance is sufficiently large and high gloss is imparted. The effect was demonstrated and a smooth surface was also observed by SEM observation.
As described above, the phytic acid (inositol 6-phosphate) and its salt in the region of pH 5.5 to 6.5 according to the present invention hardly damage the enamel surface, and 1 μm formed on the surface. Less than solid product can be selectively removed.

また、フィチン酸の濃度は0.05%においても歯が白くなるだけでなくΔ輝度が4.5と高い光沢付与効果を示し、0.1%以上ではΔ輝度が5.8以上となり高い光沢付与効果を示した。しかし、比較例8、9に示すように、19質量%以上の濃度では歯の表面が凸凹となっていることが観察された。また、味の観点からも、10質量%以下の濃度、さらに5質量%以下の濃度が好ましい。なお、フィチン酸を配合せず乳酸を1%配合した比較例7は歯の表面が凸凹となり光沢が落ちていた(Δ輝度がマイナスとなっていた)。   Further, even when the concentration of phytic acid is 0.05%, not only teeth become white, but also Δ luminance is 4.5 and high gloss imparting effect is exhibited, and when 0.1% or more, Δ luminance is 5.8 or more and high gloss is obtained. The imparting effect was shown. However, as shown in Comparative Examples 8 and 9, it was observed that the tooth surface was uneven at a concentration of 19% by mass or more. Moreover, the density | concentration of 10 mass% or less and also the density | concentration of 5 mass% or less are preferable also from a viewpoint of taste. In Comparative Example 7, in which phytic acid was not blended and lactic acid was blended at 1%, the tooth surface was uneven and gloss was lowered (Δ luminance was negative).

さらに、エリスリトールを含有する実施例8〜実施例10は、同じフィチン酸の量を含有する同じpHの実施例1よりもΔ輝度が高く、実施例8〜10は実施例1〜10の中でΔ輝度が高い結果であった。フィチン酸にさらにエリスリトールを含有することによって光沢付与効果の向上が認められた。   Furthermore, Examples 8-10 containing erythritol have higher Δ brightness than Example 1 of the same pH containing the same amount of phytic acid, and Examples 8-10 are among Examples 1-10. The Δ brightness was high. It was confirmed that the gloss imparting effect was improved by further containing erythritol in phytic acid.

試験例4:組成物中の多価カチオンの含有量
表5に示す実施例1、及び比較例10、11の練歯磨剤を試験溶液として調製した。練歯磨剤中のフィチン酸の含有量を1質量%とし、多価カチオンを実質的に配合しない実施例1に対して、マグネシウムとアルミニウムの合計で5000ppm配合した比較例9、マグネシウムとアルミニウムの合計で500ppm配合した比較例11の試験溶液を調製した。これらの練歯磨剤(試験溶液)のpHは、イオン交換水で30質量%に希釈したときのpHである。なお、実施例1の多価カチオンは、マグネシウム18.4ppm(フィチン酸に対して0.05倍モル)、アルミニウム16.4ppm(フィチン酸に対して0.04倍モル)、多価カチオンの合計量は36.8ppmでフィチン酸に対して0.1倍モル未満であり、比較例9はマグネシウムを5000ppm配合しフィチン酸に対して13.6倍モル以上の多価カチオンを含有し、比較例10はアルミニウムを500ppm配合しフィチン酸に対して1.2倍モル以上の多価カチオンを含有していた。
試験に用いるヒト歯の状態は上記試験例1と同様であり、それぞれの試験用溶液による浸漬前後の輝度の変化Δ輝度の測定、歯の表面状態の凸凹の測定は、上記試験例1と同様にして行った。
マグネシウムを5000ppm配合した比較例10とアルミニウムを500ppm配合した比較例11は、歯の表面に試験前の固形生成物が残っている状態が認められ、実施例2に比べて歯が黄色く見えΔ輝度も低く、フィチン酸による固形生成物除去効果、光沢付与効果が抑制されていた。
このように、多価カチオンを含有しないか、又はフィチン酸に対して0.1倍モル未満の多価カチオンの存在下でのフィチン酸及びその塩は、フィチン酸による固形生成物除去効果が低下することなく、歯を白くする効果があるだけでなく、光沢付与剤として充分に機能することができる。

Test Example 4: Content of polyvalent cation in composition The toothpastes of Example 1 and Comparative Examples 10 and 11 shown in Table 5 were prepared as test solutions. Comparative Example 9 in which the content of phytic acid in the toothpaste was 1% by mass, and 5000 ppm in total of magnesium and aluminum was added to Example 1 in which the polyvalent cation was not substantially added, the total of magnesium and aluminum A test solution of Comparative Example 11 containing 500 ppm was prepared. The pH of these toothpastes (test solutions) is the pH when diluted to 30% by mass with ion-exchanged water. In addition, the polyvalent cation of Example 1 is magnesium 18.4 ppm (0.05 times mol with respect to phytic acid), aluminum 16.4 ppm (0.04 times mol with respect to phytic acid), and the total of polyvalent cations. The amount is 36.8 ppm and is less than 0.1 times mol of phytic acid, and Comparative Example 9 contains 5000 ppm of magnesium and contains 13.6 times mol or more of polyvalent cation with respect to phytic acid. 10 contained 500 ppm of aluminum and contained 1.2 times or more of polyvalent cation with respect to phytic acid.
The condition of the human teeth used in the test is the same as in Test Example 1, and the change in luminance before and after immersion with each test solution Δ, the measurement of the unevenness of the tooth surface condition, and the measurement of the unevenness of the tooth surface condition are the same as in Test Example 1 above. I went there.
In Comparative Example 10 containing 5000 ppm of magnesium and Comparative Example 11 containing 500 ppm of aluminum, a state in which a solid product before the test remained on the tooth surface was observed, and the teeth appeared yellow compared to Example 2, and Δ luminance And the solid product removal effect and gloss imparting effect by phytic acid were suppressed.
Thus, phytic acid and its salts in the presence of polyvalent cations that do not contain polyvalent cations or are less than 0.1-fold mol of phytic acid have a reduced solid product removal effect by phytic acid. In addition to having the effect of whitening the teeth, it can sufficiently function as a gloss imparting agent.

試験例5:歯磨剤の粘度
表6に示す実施例11〜13の練歯磨剤を試験溶液として調製した。これらの各試験溶液中のマグネシウム、アルミニウムの含有量はIPC発光分析法で測定してフィチン酸に対して0.1倍モル未満であった。練歯磨剤中のフィチン酸の含有量を1質量%とし、粘度90Pa・sに調製した実施例11に対して、カルボキシメチルセルロースナトリウムの量と質(エーテル化度)と精製水の調整により実施例12の練歯磨剤を220Pa・s、実施例13の練歯磨剤を400Pa・sに調製した。粘度は、ヘリパス型粘度計を用いて、測定温度を25℃とし、ロータC、2.5r/min(2.5rpm)、1分間の測定条件により測定した。試験は、それぞれの試験溶液をイオン交換水で30質量%に希釈し、希釈した試験溶液にヒト歯を48時間浸漬し、浸漬前後の輝度を測定し、浸漬前後の輝度の変化Δ輝度(浸漬後の輝度―浸漬前の輝度)を求めた。ヒト歯の状態は試験例1と同様であり、各試験溶液による浸漬前後の輝度の変化Δ輝度の測定、歯の表面の凸凹の観察は、上記試験例1と同様に行った。試験溶液をイオン交換水で30質量%に希釈したのは、練歯磨剤を口腔内に適用した状態を想定したものであり、実施例11〜13の組成の練歯磨剤を30質量%で希釈すると粘度は1/8〜1/10となり、例えば実施例10の練歯磨剤を30質量%で希釈した粘度は約30Pa・sである。実施例11〜13のいずれも表面はなめらかで歯が白くなっていると認められたが、粘度の低い実施例のΔ輝度がより高く、特に練歯磨剤の粘度が250Pa・s以下において高いΔ輝度が得られた。
Test Example 5: Viscosity of dentifrice The toothpastes of Examples 11 to 13 shown in Table 6 were prepared as test solutions. The content of magnesium and aluminum in each of these test solutions was less than 0.1 times mol of phytic acid as measured by IPC emission spectrometry. Compared to Example 11 in which the content of phytic acid in the toothpaste was 1% by mass and the viscosity was adjusted to 90 Pa · s, the amount and quality (degree of etherification) of sodium carboxymethylcellulose and adjustment of purified water were used. Twelve toothpastes were prepared at 220 Pa · s, and the toothpaste of Example 13 was prepared at 400 Pa · s. Viscosity was measured using a helipath viscometer at a measurement temperature of 25 ° C. under rotor C at 2.5 r / min (2.5 rpm) for 1 minute. In the test, each test solution was diluted to 30% by mass with ion-exchanged water, human teeth were immersed in the diluted test solution for 48 hours, luminance before and after immersion was measured, and luminance change before and after immersion Δ luminance (immersion Subsequent luminance-luminance before immersion) was determined. The state of the human teeth was the same as in Test Example 1, and the change in luminance Δ before and after immersion with each test solution, the measurement of the luminance, and the observation of the unevenness of the tooth surface were performed in the same manner as in Test Example 1. The test solution was diluted to 30% by mass with ion-exchanged water, assuming that the toothpaste was applied to the oral cavity, and the toothpaste having the composition of Examples 11 to 13 was diluted to 30% by mass. Then, the viscosity becomes 1/8 to 1/10. For example, the viscosity obtained by diluting the toothpaste of Example 10 at 30% by mass is about 30 Pa · s. In each of Examples 11 to 13, it was recognized that the surface was smooth and the teeth were white, but the Δ luminance of the low viscosity example was higher, especially when the viscosity of the toothpaste was 250 Pa · s or less. Brightness was obtained.

Claims (6)

フィチン酸又はその塩を0.05〜18質量%含有し、
多価カチオンを含有しないか又はフィチン酸に対して0.1倍モル未満含有し、
フィチン酸以外の有機酸及び無機酸であるpH調整剤の含有量が、フィチン酸に対して質量比で5%以下であり、
ゼオライト及び活性炭から選ばれる吸着剤を含有しないか又は0.001質量%未満含有し、
フッ化物を含有しないか又はフッ素原子換算で500ppm未満含有し、かつ
水で30質量%に希釈したときのpHが5.5〜6.5である、歯の表面に生成した固形生成物除去用組成物。
Containing 0.05 to 18% by mass of phytic acid or a salt thereof,
Does not contain a polyvalent cation or contains less than 0.1-fold mol of phytic acid,
The content of the pH adjuster which is an organic acid other than phytic acid and an inorganic acid is 5% or less by mass ratio to phytic acid,
Does not contain an adsorbent selected from zeolite and activated carbon or contains less than 0.001% by mass,
For removing solid products generated on the tooth surface that do not contain fluoride or contain less than 500 ppm in terms of fluorine atoms, and have a pH of 5.5 to 6.5 when diluted to 30% by mass with water Composition.
顆粒を含有しないか又は崩壊強度が10g/個以下である顆粒を含有する請求項1記載の歯の表面に生成した固形生成物除去用組成物。The composition for removing a solid product formed on the tooth surface according to claim 1, wherein the composition does not contain granules or contains granules having a disintegration strength of 10 g / piece or less. さらにエリスリトールを含有する請求項1又は2に記載の歯の表面に生成した固形生成物除去用組成物。   The composition for removing a solid product produced on the tooth surface according to claim 1 or 2, further comprising erythritol. エリスリトールを10〜60質量%含有する請求項3に記載の歯の表面に生成した固形生成物除去用組成物。   The composition for removing a solid product formed on the tooth surface according to claim 3, which contains 10 to 60% by mass of erythritol. フィチン酸又はその塩を0.05〜5質量%含有し、
多価カチオンを含有しないか又はフィチン酸に対して0.1倍モル未満含有し、
フィチン酸以外の有機酸及び無機酸であるpH調整剤の含有量が、フィチン酸に対して質量比で5%以下であり、
ゼオライト及び活性炭から選ばれる吸着剤を含有しないか又は0.001質量%未満含有し、
フッ化物を含有しないか又はフッ素原子換算で500ppm未満含有し、かつ
水で30質量%に希釈したときのpHが5.5〜6.5であって、25℃における粘度が10〜300Pa・sである、歯の表面に生成した固形生成物除去用練歯磨剤。
Containing 0.05 to 5% by mass of phytic acid or a salt thereof,
Does not contain a polyvalent cation or contains less than 0.1-fold mol of phytic acid,
The content of the pH adjuster which is an organic acid other than phytic acid and an inorganic acid is 5% or less by mass ratio to phytic acid,
Does not contain an adsorbent selected from zeolite and activated carbon or contains less than 0.001% by mass,
It contains no fluoride or less than 500 ppm in terms of fluorine atoms and has a pH of 5.5 to 6.5 when diluted to 30% by mass with water , and a viscosity at 25 ° C. of 10 to 300 Pa · s. A toothpaste for removing a solid product formed on the tooth surface.
フィチン酸又はその塩を0.05〜18質量%含有し、
多価カチオンを含有しないか又はフィチン酸に対して0.1倍モル未満含有し、
フィチン酸以外の有機酸及び無機酸であるpH調整剤の含有量が、フィチン酸に対して質量比で5%以下であり、
ゼオライト及び活性炭から選ばれる吸着剤を含有しないか又は0.001質量%未満含有し、
フッ化物を含有しないか又はフッ素原子換算で500ppm未満含有し、かつ
水で30質量%に希釈したときのpHが5.5〜6.5である口腔用組成物を歯に適用する、歯の表面に生成した固形生成物除去による光沢付与方法。
Containing 0.05 to 18% by mass of phytic acid or a salt thereof,
Does not contain a polyvalent cation or contains less than 0.1-fold mol of phytic acid,
The content of the pH adjuster which is an organic acid other than phytic acid and an inorganic acid is 5% or less by mass ratio to phytic acid,
Does not contain an adsorbent selected from zeolite and activated carbon or contains less than 0.001% by mass,
Applying an oral composition having no fluoride or containing less than 500 ppm in terms of fluorine atoms and having a pH of 5.5 to 6.5 when diluted to 30% by mass with water to teeth, A gloss imparting method by removing a solid product formed on the surface.
JP2009014807A 2008-11-19 2009-01-26 Composition for removing solid product formed on tooth surface Active JP5563226B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009014807A JP5563226B2 (en) 2008-11-19 2009-01-26 Composition for removing solid product formed on tooth surface
US13/129,291 US8580234B2 (en) 2008-11-19 2009-10-23 Method for removing solid product formed on surfaces of teeth
CN200980146328.1A CN102215813B (en) 2008-11-19 2009-10-23 Method for removing solid product formed on surfaces of teeth
PCT/JP2009/005592 WO2010058522A1 (en) 2008-11-19 2009-10-23 Method for removing solid product formed on surfaces of teeth

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008296104 2008-11-19
JP2008296104 2008-11-19
JP2009014807A JP5563226B2 (en) 2008-11-19 2009-01-26 Composition for removing solid product formed on tooth surface

Publications (2)

Publication Number Publication Date
JP2010150225A JP2010150225A (en) 2010-07-08
JP5563226B2 true JP5563226B2 (en) 2014-07-30

Family

ID=42569723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009014807A Active JP5563226B2 (en) 2008-11-19 2009-01-26 Composition for removing solid product formed on tooth surface

Country Status (1)

Country Link
JP (1) JP5563226B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5705513B2 (en) * 2010-11-29 2015-04-22 花王株式会社 Liquid oral composition
JP6249641B2 (en) * 2013-06-10 2017-12-20 花王株式会社 Liquid oral composition
RU2686681C2 (en) 2014-06-10 2019-04-30 Као Корпорейшн Oral composition

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5618913A (en) * 1979-07-25 1981-02-23 Lion Corp Detergent for tooth or artificial denture
JPS5618911A (en) * 1979-07-25 1981-02-23 Lion Corp Dentifrice composition
JPH1017447A (en) * 1996-06-28 1998-01-20 Lion Corp Antiodontolithic agent and composition for oral cavity
US20060171907A1 (en) * 1996-11-21 2006-08-03 The Procter & Gamble Company Oral care compositions providing enhanced whitening and stain prevention
JPH10182383A (en) * 1996-12-24 1998-07-07 Lion Corp Composition for oral cavity
JPH10298049A (en) * 1997-04-30 1998-11-10 Lion Corp Suppressant for formation of bacterial plaque and composition for oral cavity
JPH11349460A (en) * 1998-06-04 1999-12-21 Lion Corp Composition for oral cavity
JP2003335646A (en) * 2002-05-20 2003-11-25 Lion Corp Dentifrice composition
JP4852223B2 (en) * 2003-06-20 2012-01-11 花王株式会社 Coaggregation inhibitor of oral bacteria
JP2006124292A (en) * 2004-10-27 2006-05-18 Lion Corp Dentifrice composition and method for stabilizing dextranase and lysozyme chloride at the same time
KR20080063528A (en) * 2005-11-29 2008-07-04 더 프록터 앤드 갬블 캄파니 Dentifrice composition free of abrasive material
JP2007153841A (en) * 2005-12-07 2007-06-21 Wakoudou Kk Oral composition
JP4806597B2 (en) * 2006-07-10 2011-11-02 花王株式会社 Toothpaste composition
JP5303180B2 (en) * 2008-04-24 2013-10-02 花王株式会社 Composition for remodeling tooth trabeculae of teeth
JP5276887B2 (en) * 2008-04-25 2013-08-28 花王株式会社 Dentifrice composition

Also Published As

Publication number Publication date
JP2010150225A (en) 2010-07-08

Similar Documents

Publication Publication Date Title
JP5097841B2 (en) Oral composition
JP5816549B2 (en) Compositions and methods for improving fluoride uptake using bioactive glass
JP2016533325A (en) Dental care products for whitening teeth
EA027211B1 (en) Oral care composition
US8580234B2 (en) Method for removing solid product formed on surfaces of teeth
JP5276887B2 (en) Dentifrice composition
JP5303180B2 (en) Composition for remodeling tooth trabeculae of teeth
AU599130B2 (en) Toothpaste
JP5563226B2 (en) Composition for removing solid product formed on tooth surface
JP5508611B1 (en) Tooth whitening agent
JP2008201732A (en) Method for brightening teeth
WO2010058522A1 (en) Method for removing solid product formed on surfaces of teeth
JP6665706B2 (en) Tooth whitening composition and tooth whitening set
JP2005517670A (en) Toothpaste composition
JP5563212B2 (en) Oral composition
JP5860572B1 (en) Oral composition
JP6263007B2 (en) Tooth whitening agent
EA036458B1 (en) Oral care composition
JP6471212B2 (en) Tooth whitening agent
JP3820402B2 (en) Oral composition and gum
WO2022059642A1 (en) Dentifrice composition
EA044014B1 (en) COMPOSITION FOR ORAL CARE

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20111208

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131112

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20140109

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20140115

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140129

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140603

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140612

R151 Written notification of patent or utility model registration

Ref document number: 5563226

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250