JP2015034134A - 液体口腔洗浄剤 - Google Patents
液体口腔洗浄剤 Download PDFInfo
- Publication number
- JP2015034134A JP2015034134A JP2013164611A JP2013164611A JP2015034134A JP 2015034134 A JP2015034134 A JP 2015034134A JP 2013164611 A JP2013164611 A JP 2013164611A JP 2013164611 A JP2013164611 A JP 2013164611A JP 2015034134 A JP2015034134 A JP 2015034134A
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- Prior art keywords
- liquid oral
- electrolyzed water
- liquid
- water
- present
- 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.)
- Granted
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Classifications
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Landscapes
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- Public Health (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Cosmetics (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Detergent Compositions (AREA)
Abstract
Description
水に塩化ナトリウム、塩化カリウム等の塩素系電解質を添加し、電気分解することで得られる電解水が公知である。特に、電解槽を、イオン交換膜等を用いて2室以上に分け、一対の電極を設け電気を通電することで性質の異なる2種の電解水を製造することができる。ここで、電極の陰極側から得られる電解水は還元水と呼ばれ、アルカリ性を示して油脂やタンパク質等の有機物を分解、洗浄することができる効果を有することが知られている。一方、陽極側から得られる電解水は酸化水と呼ばれ、次亜塩素酸イオン、塩素イオン等を含んで酸性を示し、その殺菌効果から、感染症対策として手や内視鏡の洗浄に利用されている。
本発明の液体口腔洗浄剤には、口腔内に適用した際の清涼感の向上及び電解水の有する金属腐食性の低減の観点から、メントール類を含有することを必須とする。用いられるメントール類としては、I−メントール、d−メントール、dI−メントール等が挙げられ、なかでもI−メントールが特に好ましい。
本発明者は、検討の結果、アニオン性界面活性剤が、口腔内の洗浄及び殺菌という通常の役割ほかに、メントール類の添加に伴う電解水の分解促進作用や電解水の金属腐食作用の防止する働きを有すことを見出した。
本発明の液体口腔洗浄剤には、難水溶性のメントール類を溶解することを目的に、水溶性有機溶剤が用いられる。このような本発明の液体口腔洗浄剤に用いられる水溶性有機溶剤としては、液体口腔洗浄剤に使用できるも公知のものが、特に限定されることなく使用できる。例えば、エタノール、プロパノール等の低級アルコール;グリセリン、エチレングリコール、プロピレングリコール、1、3−ブチレングリコール等の多価アルコール;ポリエチレングリコール、ポリプロピレングリコール等のポリアルキレングリコールを挙げることができる。これらの中から、1種又は2種以上を併用してもよい。また、これらのうち、刺激の少ないものを選択して使用することが特に好ましく、多価アルコール、特にグリセリン、エチレングリコール、プロピレングリコールを用いることが好ましい。
本発明の液体口腔洗浄剤には、そのpHを適切な範囲に調整するために、アルカリ剤を添加してもよい。アルカリ剤としては、人体に悪影響を与えるものでなければ公知のものが特に限定されることなく使用できる。
本発明の液体口腔洗浄剤は、上記酸化還元電位が正の電解水に、メントール類、アニオン性界面活性剤、水溶性有機溶剤及びアルカリ剤を添加した一液型の洗浄剤としてもよいし、電解水と、メントール類又はアニオン性界面活性剤のいずれか1種以上とが、互いに接触しないように別々に収容される二液型以上の洗浄剤としてもよい。二液型以上の液体口腔洗浄剤とする場合は、使用直前に両者を混合して適量の最終的な液体口腔洗浄剤を作るか、又は混合してある程度の量の最終的な液体口腔洗浄剤の作り置きをしておいて、使用時にこれを適量取り分けて使用する。
<実施例>
三室型電解装置((株)レドックス社製)を使用し、陽極槽から、残留塩素濃度125ppm、ORP905mVの電解水を得て、さらに、8mol/Lの水酸化ナトリウムを加えて、pHがおよそ7とした。この電解水に、80mg/LのI−メントール、80mL/Lのプロピレングリコール(PG)、40mg/Lのドデシル硫酸ナトリウム(SDS)をそれぞれ溶解し、pHがおよそ7の液体口腔洗浄剤とした。
市販電解水含有液体口腔洗浄剤をそのまま使用した。
<比較例2>
実施例に用いた電解水のみを使用して、比較液体口腔洗浄剤とした。
<比較例3>
ドデシル硫酸ナトリウム(SDS)を添加しない以外は、実施例と同様にして、比較液体口腔洗浄剤とした。
<比較例4>
I−メントール及びプロピレングリコール(PG)を添加しない以外は、実施例と同様にして、比較液体口腔洗浄剤とした。
実施例及び比較例1の液体口腔洗浄剤を口に含んだ際の塩素臭及び塩味の有無を、被験者24人に液体口腔洗浄剤でうがいをしてもらった後アンケートを取ることで評価した。図1及び2にその結果を示す。
上記実施例及び比較例の液体口腔洗浄剤の塩素濃度を測定した。続いて、これらの液体口腔洗浄剤を容器に入れて室温で1月保存し、1月後の塩素濃度の減少量を測定した。
[金属腐食性の評価]
プラスチックの容器にステンレス製の釘を1本入れた後、上記実施例及び比較例の液体口腔洗浄剤を加えて15分間室温で放置し、液の変化を観察した。金属が溶出して液が茶色に変色したものを×、やや色づいたものを△、変化の見られないものを○とした。
実施例の液体口腔洗浄剤を用いてうがいを行い、その口腔内細菌に対する殺菌効果の確認を行った。図3は、実施例液体口腔洗浄剤によるうがいをする前の歯周ポケットから採取した口腔内細菌である。ほとんどすべての細胞の形が、しっかり見えていることがわかった。これらの明るくみえるところが、生きている細菌(生菌)を示している。
本発明の液体口腔洗浄剤のう蝕細菌(S.mutans及びLactobacillus)に対する効果に関し、市販の電解水が用いられていない洗口剤との比較を行った。実施例の液体口腔洗浄剤と、比較例5として市販洗口剤(100g中0.2gの塩化ベンゼトニウムを含有。)を作用後、その細菌を採取し、Mitis Salivarius寒天培地又はDifco Rogosa SL寒天培地にて、37℃、48時間平面培養した後、コロニ−数を計測した(CFU/ml)。さらに、対照実験として、緩衝液(PBS)を作用したものも、同様の計測を行った。
本発明の液体口腔洗浄剤の口腔内の上皮細胞に対する影響を、比較例5及び実施例の液体口腔洗浄剤を用いて20秒間うがいを行い、口腔内の上皮細胞を採取して観察を行うことで確認した。比較例5は、市販の電解水含有液体口腔洗浄剤であり、その塩素含有量は125ppm、pH7.83である。これに対し、本発明の液体口腔洗浄剤は、塩素含有量が125ppm、pH7であった。
Claims (5)
- 酸化還元電位が正の電解水、メントール類、アニオン性界面活性剤及び水溶性有機溶剤を含有し、pHが6〜8である液体口腔洗浄剤。
- アルカリ剤としてアルカリ金属の水酸化物を含む請求項1に記載の液体口腔洗浄剤。
- 前記電解水と、前記メントール類又は前記アニオン性界面活性剤のいずれか1種以上とが、互いに接触しないように収容され、使用時に混合状態で用いられる請求項1又は2に記載の液体口腔洗浄剤。
- 前記アニオン性界面活性剤がアルキルベンゼンスルホン酸塩、α−オレフィンスルホン酸塩、アルキル硫酸エステル塩からなる群から選ばれる1種以上を含む請求項1〜3いずれか1項に記載の液体口腔洗浄剤。
- 前記水溶性有機溶剤が多価アルコールを含む請求項1〜4いずれか1項に記載の液体口腔洗浄剤。
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CN201480046813.2A CN105764479B (zh) | 2013-08-07 | 2014-08-06 | 液体口腔清洁剂 |
GB1603275.7A GB2532663B (en) | 2013-08-07 | 2014-08-06 | Liquid mouthwash |
PCT/JP2014/070793 WO2015020116A1 (ja) | 2013-08-07 | 2014-08-06 | 液体口腔洗浄剤 |
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GB2532663A (en) | 2016-05-25 |
CN105764479A (zh) | 2016-07-13 |
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