Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP3907458B2 - Dental impression tray cleaning composition - Google Patents
[go: Go Back, main page]

JP3907458B2 - Dental impression tray cleaning composition - Google Patents

Dental impression tray cleaning composition Download PDF

Info

Publication number
JP3907458B2
JP3907458B2 JP2001365656A JP2001365656A JP3907458B2 JP 3907458 B2 JP3907458 B2 JP 3907458B2 JP 2001365656 A JP2001365656 A JP 2001365656A JP 2001365656 A JP2001365656 A JP 2001365656A JP 3907458 B2 JP3907458 B2 JP 3907458B2
Authority
JP
Japan
Prior art keywords
tray
sodium
parts
impression material
hydrogen peroxide
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.)
Expired - Lifetime
Application number
JP2001365656A
Other languages
Japanese (ja)
Other versions
JP2003165997A (en
JP2003165997A5 (en
Inventor
恒明 加藤
忠司 原
靖生 赤松
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.)
Tokuyama Corp
Tokuyma Dental Corp
Original Assignee
Tokuyama Corp
Tokuyma Dental 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 Tokuyama Corp, Tokuyma Dental Corp filed Critical Tokuyama Corp
Priority to JP2001365656A priority Critical patent/JP3907458B2/en
Publication of JP2003165997A publication Critical patent/JP2003165997A/en
Publication of JP2003165997A5 publication Critical patent/JP2003165997A5/ja
Application granted granted Critical
Publication of JP3907458B2 publication Critical patent/JP3907458B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Detergent Compositions (AREA)
  • Dental Prosthetics (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、歯科の診療において印象採得後に歯科用印象トレーに固着したアルジネート印象材を溶解除去するとともに清掃洗浄を行う洗浄剤用の組成物に関する。
【0002】
【従来の技術】
歯牙修復のための歯牙型取りには印象材が用いられ、中でもアルジネート印象材が多く使用されている。アルジネート印象材は、アルギン酸塩と硫酸カルシウムを水の存在下で練和するとゲル状硬化体が得られることを利用したものである。歯牙の型取りは、一般に歯列を模したトレーに硬化前の印象材練和物を盛り付け、口腔内の歯牙を包み込むようにトレーを歯牙に押付け、印象材硬化後に、トレーと印象材硬化体とを一体として歯牙から外して口腔外に撤去することにより行われている。歯牙の型取り後に、印象材硬化体に模型材(石膏等)を注入して歯牙の模型作成を行う。
【0003】
模型作成後のトレーは繰り返し使用する為、付着している模型作成後の印象材をトレーから剥し取り、繰り返し印象採取に用いられる。通常、トレーには印象材の保持性を向上させるため保持孔と呼ばれる孔が形成されているが、印象材をトレーから剥がし取る際に、このトレー表面の保持孔等に固着した印象材の一部が残存する。しかしながらこの印象材残存物は水に不溶であり、水洗のみでは容易に除去洗浄することができない。
【0004】
このため「印象材用トレー洗浄剤」と称される薬剤を使用する必要がある。この「印象材用トレー洗浄剤」は一般的に粉末あるいは液体として市販されており、水に溶解して使用される。(即ち、実際にトレー洗浄剤として使用されるのは、当該「印象材用トレー洗浄剤」の水溶液である。)
当該トレー洗浄剤は水不溶性のアルジネート印象材を溶解することを目的としており、使用方法としては、アルジネート印象材の付着したトレーをこの洗浄剤に浸漬し印象材を溶解除去する。従って溶解能力の低い場合、溶解処理に要する浸漬処理時間が長くかかるため作業効率が低くなるという問題点がある。さらに浸漬処理時間が長い場合には、トレー洗浄剤に含まれる種々の成分によるトレーの変色、腐食等が発生し易くなり、その点においても好ましくない。
【0005】
従来、上記印象材の溶解性を向上させるため種々の提案がなされている。例えば、特許第1470908号には過炭酸塩を用いた印象材用洗浄剤が開示されている。
【0006】
また、特許第1863470号にはキレート剤を主溶解剤として、アミン、四級アンモニウム塩、アセチレン化合物、及びトリアゾ化合物からなる洗浄剤が開示されている。
【0007】
一方、浸漬処理されるトレー材質は様々である。トレー材質を大別するとレジン製トレーと金属製トレーに分けられる。レジン製トレーの材質としては、主としてポリメタクリル酸エステル等、金属製トレーの材質としては、ステンレス、錫合金、アルミニウム、メッキ処理や樹脂コーティングされた黄銅などがあり、それぞれの材質のトレーが用途に応じて使い分けられている。
【0008】
【発明が解決しようとする課題】
しかしながら、上記したような過炭酸を用いたトレー洗浄剤は、印象材溶解性は高いものの、上記したようなトレーに用いられる全ての材質に対して防食性が良いわけではなく、アルミニウム性のトレーを変色させたり、あるいは錫合金や黄銅性のトレーを腐食させたりする問題がある。一方、特許第1863470号に記載のトレー用洗浄剤は、トレーに対する腐食性は低いものの、印象材溶解性が今一つであり改善の余地がある。特に、近年その利便性故に使用量が増加しているペースト型のアルジネート印象材に対しては充分な溶解性を示さない。これは、ペースト型のアルジネート印象材がそのペースト化成分として、流動パラフィン、シリコーンオイル等の疎水性液状化合物を数%〜十数%と多量に含んでおり、水溶液として使用される当該洗浄剤の浸透・溶解速度が大幅に低下するためであると思われる。従って、印象材用トレーとして使用される全ての材質に対して腐食性がなく、かつ印象材溶解性に優れた、特に疎水性液状化合物を多量に含んだ印象材でも問題なく溶解させる歯科印象トレー用洗浄剤の開発が望まれていた。
【0009】
【課題を解決するための手段】
本発明者らは、上記の課題を解決すべく鋭意検討した結果、過酸化水素又は過酸化水素化物を含む高い印象材溶解性を示す組成物に対し、アゾール系化合物という特定の防食剤を配合することにより優れた印象材溶解性と各種金属防食効果を発現することを見出し本発明を完成した。
【0010】
即ち、本発明は、(1)過酸化水素及び/又は過酸化水素化物100質量部に対して、(2)アゾール系化合物1〜20質量部、並びに(3)アルカリ金属の炭酸塩、炭酸水素塩、リン酸塩、硫酸塩、及び硫酸水素塩よりなる群から選ばれる少なくとも一種の塩250〜1500質量部を含有することを特徴とする歯科印象トレー洗浄剤用組成物である。
【0011】
【発明の実施の形態】
本発明の歯科印象トレー洗浄剤用組成物には、過酸化水素及び/又は過酸化水素化物が配合される。なお過酸化水素化物とは、結晶水に相当する結晶過酸化水素を含む化合物であり、水に溶解した際に過酸化水素を発生する性質を有するものである。
【0012】
当該過酸化水素化物を具体的に例示すると、過硼酸ナトリウム、過炭酸ナトリウム、トリポリリン酸ナトリウム・過酸化水素付加物、ピロリン酸ナトリウム・過酸水素付加物、尿素・過酸化水素付加物、過酸化カルシウム、過酸化ナトリウム等が挙げられる。
【0013】
本発明においては、過酸化水素又は過酸化水素化物のいずれを使用しても良いが、過酸化水素は高濃度では爆発性を有し、水溶液として保管する必要があるのに対し、過酸化水素化物は通常固体であり、また安定性が高く、粉末状の包装形態で保管・流通させ使用時に水と混合する使用形態とすることが容易なため、過酸化水素化物を用いることが好ましい。安定性や毒性、洗浄(溶解)効果を考慮すると過炭酸ナトリウムを用いることが最も好ましい。また、必要に応じ複数の過酸化水素化物を併用することも可能である。
【0014】
また、上記過酸化水素化物は安定性向上のため被覆剤によって表面を被覆されたものでもよい。表面被覆剤として、炭酸ナトリウム、炭酸カリウム、炭酸マグネシウム、炭酸カルシウム、炭酸水素ナトリウム、炭酸水素カリウム等の炭酸塩、硫酸ナトリウム、硫酸カリウム、硫酸カルシウム等の硫酸塩、珪酸ナトリウム、オルト珪酸ナトリウム、メタ珪酸ナトリウム、セスキ珪酸ナトリウム等の珪酸塩、オルト硼酸ナトリウム、メタ硼酸ナトリウム、四硼酸ナトリウム等の硼酸塩が挙げらる。当該表面被覆は公知のいかなる方法で行っても良い。上記被覆剤のなかでも珪酸塩や硼酸塩は被覆剤として配合安定性が向上する効果以外に、洗浄能と防食性能を有する為に特に好ましい。
【0015】
本発明におけるトレー洗浄剤用組成物には、防食剤としてアゾール系化合物が使用される。アゾール系化合物を防食剤として配合することにより、過酸化水素及び/又は過酸化水素化物による印象材溶解性を低下させることなく、ステンレス、アルミニウム、錫合金、黄銅等の一般に歯科印象トレーの材質に用いられる全ての金属に対する防食効果が得られる。これは他の防食剤、例えば、珪酸塩、亜硝酸塩、クロム酸塩、アルキルジサルファイド等のS化合物、アルキルベンゼンスルホンアミド系界面活性剤等では得られない驚くべき効果である。
【0016】
当該アゾール系化合物としては特に制限されず公知の化合物が使用でき、具体的にはベンゾイミダソール等のイミダゾール系化合物、ベンゾチアゾール等のチアゾール系化合物、ベンゾチアジアゾール等のチアジアゾール系化合物、ベンゾトリアゾール、1−オキシベンゾトリアゾール、1−N−アセチルベンゾトリアゾール、1−N−ベンゾイルベンゾトリアゾール、5−クロロベンゾトリアゾール等のトリアゾール系化合物が例示される。これらのなかでも防食効果が高い点で、トリアゾール系化合物が好ましく、ベンゾトリアゾールが最も好ましい。これらアゾール系化合物は複数の種類のものを併用してもよい。
【0017】
本発明の歯科印象トレー洗浄剤用組成物における、上記過酸化水素及び/又は過酸化水素化物とアゾール系化合物の配合割合は特に限定されるものではないが、防食性を考慮すると過酸化水素及び/又は過酸化水素化物100質量部に対し、アゾール系化合物が0.05〜50質量部であるのが好ましく、0.5〜40質量部であるのがより好ましく、1〜20質量部であるのが最もこのましい。
【0018】
本発明の歯科印象トレー洗浄剤用組成物には上記した過酸化水素及び/又は過酸化水素化物、アゾール系化合物に加えて、アルカリ金属のアルカリ金属の炭酸塩、炭酸水素塩、リン酸塩、硫酸塩、硫酸水素塩よりなる群から選ばれる少なくとも一種の塩(以下、これらを総称してアルカリ金属塩と称す場合がある)を配合することが好ましい。当該アルカリ金属塩を配合することにより、さらに印象材溶解性を向上させることができる。またこれにより、過酸化水素及び/又は過酸化水素化物の配合量を相対的に少なくすることができる。特に過酸化水素化物の水溶液はアルカリ性が強く、その水溶液の取り扱いには注意を要するが、当該アルカリ金属塩を配合することにより同一の洗浄能力を有したまま、過酸化水素化物の配合量を少なくすることができ安全性も向上する。
【0019】
なお、同じアルカリ金属の塩でも、塩酸塩、硝酸塩あるいはカルボン酸塩等では上記の溶解性向上の効果は見られない。
【0020】
当該アルカリ金属塩を具体的に例示すると、アルカリ金属炭酸塩又は炭酸水素塩として炭酸ナトリウム、炭酸水素ナトリウム、炭酸カリウム、炭酸水素カリウム等が挙げられ、アルカリ金属リン酸塩として、リン酸ナトリウム、リン酸カリウム、リン酸水素ナトリウム、リン酸水素カリウム、リン酸二水素ナトリウム、リン酸二水素カリウム、ピロリン酸ナトリウム、ピロリン酸カリウム、トリポリリン酸ナトリウム、トリポリリン酸カリウム等が挙げられる。また、アルカリ金属硫酸塩又は硫酸水素塩を具体的に例示すると、硫酸ナトリウム、硫酸カリウム、硫酸水素ナトリウム、硫酸水素カリウム等が挙げられる。これらのうち炭酸塩又は炭酸水素塩としては、炭酸水素ナトリウムが好ましく、リン酸塩としてははリン酸ナトリウム、ピロリン酸ナトリウム、トリポリリン酸ナトリウムが好ましく、硫酸塩又は硫酸水素塩としては硫酸ナトリウムが好ましい。
【0021】
上記のアルカリ金属塩は必要に応じて、単独であるいは複数の種類のものを併用することができる。
【0022】
当該アルカリ金属塩の配合量は特に制限されるものではないが、印象材の溶解性と後述する水溶液とした際のpHとを考慮すると、好ましくは過酸化水素及び/又は過酸化水素化物100質量部に対して10〜10000質量部であり、好ましくは20〜2000質量部であり、最も好ましくは250〜1500質量部である。この範囲とすることにより充分な印象材溶解性を保持しつつ、誤って人体等に付着した際でも安全といえるpH(9.5以下、好ましくは9以下)のトレー洗浄剤とすることができる。
【0023】
また、本発明の歯科印象トレー洗浄剤用組成物にはその他の成分として、着色料、香料など公知の添加剤がなんら制限なく配合できる。
【0024】
本発明の歯科印象トレー洗浄剤用組成物は通常は水に溶解させ、トレー洗浄剤として使用する。当該水は特に限定されず、水道水、イオン交換水、蒸留水等を使用すれば良い。
【0025】
水に溶解させる際には、過酸化水素及び/又は過酸化水素化物の濃度が0.001〜20質量%でかつアゾール系化合物の濃度が0.0001〜2質量%の範囲となるようにすることが好適であり、過酸化水素及び/又は過酸化水素化物の濃度が0.1〜10質量%でかつアゾール系化合物の濃度が0.005〜0.5質量%の範囲となるように水の量を調整することが特に好ましい。
【0026】
また、前記アルカリ金属塩を配合する場合には、過酸化水素及び/又は過酸化水素化物、ならびにアゾール系化合物の濃度が上記範囲内にあり、さらに過酸化水素及び/又は過酸化水素化物とアルカリ金属塩の合計が、0.5〜30質量%の濃度となるように調整することが最も好ましい。
【0027】
本発明の歯科印象トレー洗浄剤用組成物は粉末状でもよいし、液状でも良いが、保管、流通の際の利便性を考慮すると、粉末状であるのが好ましい。なおこの場合には過酸化水素化物を使用する。前記した通り、当該粉末状の洗浄剤用組成物を使用時に水に溶解させて使用すればよい。また過酸化水素を使用する場合には、安全性を考慮して水を配合した液状組成物とし、使用時にさらに水で薄める形態とすることが好ましい。むろん過酸化水素化物を用いて液状組成物とすることも可能である。
【0028】
本発明の歯科印象トレー洗浄剤用組成物の製造方法は特に制限されず、配合される各成分を公知の方法で混合することにより調整できる。
【0029】
【実施例】
以下、実施例によって本発明を具体的に説明するが、本発明はこれらの実施例に制限されるものではない。
【0030】
洗浄剤の性能の評価は以下の方法に従った。
(1)トレー防食性
約2.5Lの洗浄剤中に、一般に使用されている各種材質の歯科印象トレーを完全に浸漬し、1週間後に取り出した。肉眼でトレー表面を観察し、変化のない場合を○、部分的に錆もしくは変色が見られる場合を△、表面全体に錆が浮いている場合を×とした。
(2)印象材溶解性
市販の歯科用アルジネート印象材「トクソーA−lα」(商品名:株式会社トクヤマデンタル製;粉末型の印象材である。以下、印象材A)及び「トクソーAP−l」(商品名:株式会社トクヤマデンタル製;疎水性液状化合物を10%程度含むペースト型の印象材である。以下、印象材B)を各々メーカー指定の方法で練和調製し、直径13mm、高さ20mmの円柱状の型に入れて硬化させ印象材硬化体を得た。当該硬化体を洗浄剤250ml中に浸漬、5時間後に取り出し、乾燥させた後、重量変化を測定した。重量減少率が30%以上を○、15%未満の場合を×、15〜30%の場合を△とした。
【0031】
実施例1
珪酸ナトリウムで表面被覆処理された過炭酸ナトリウム100質量部、ベンゾトリアゾール2.5質量部及び炭酸水素ナトリウム500質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性および印象材溶解性を評価した。
【0032】
これらの評価結果は表1に示すが、いずれの材質のトレーに対しても優れた防食性を示すと共に、A,Bいずれの印象材をも良好に溶解した。
【0033】
【表1】

Figure 0003907458
【0034】
実施例2
過炭酸ナトリウム100質量部、ベンゾチアゾール0.2質量部、リン酸ナトリウム200質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0035】
実施例3
珪酸ナトリウムで表面被覆処理された過炭酸ナトリウム100質量部、ベンゾトリアゾール3.3質量部、硫酸ナトリウム333質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤とし、トレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0036】
実施例4
過硼酸ナトリウム100質量部、ベンゾイミダゾール1.3質量部、炭酸水素ナトリウム266質量部、ピロリン酸ナトリウム67質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0037】
実施例5
硼酸ナトリウムで表面被覆処理された過炭酸ナトリウム100質量部、ベンゾトリアゾール10質量部、炭酸ナトリウム500質量部、トリポリリン酸ナトリウム500質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0038】
実施例6
硼酸ナトリウムで表面被覆処理された過硼酸ナトリウム100質量部、5−クロロベンゾトリアゾール1.3質量部、炭酸ナトリウム125質量部、炭酸水素ナトリウム125質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0039】
実施例7
硼酸ナトリウムで表面被覆処理された過炭酸ナトリウム100質量部、ベンゾトリアゾール10質量部、炭酸水素ナトリウム600質量部、トリポリリン酸ナトリウム200質量部、硫酸ナトリウム200重量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0040】
比較例1
過炭酸ナトリウム100質量部、炭酸水素ナトリウム100質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0041】
比較例2
ベンゾトリアゾール0.5質量部、トリポリリン酸ナトリウム50質量部、炭酸水素ナトリウム50質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0042】
比較例3
過炭酸ナトリウム100質量部、炭酸水素ナトリウム250質量部、及び防食剤としてオルト珪酸ナトリウム10質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0043】
比較例4
硼酸ナトリウムで表面被覆処理された過硼酸ナトリウム100質量部、炭酸ナトリウム125質量部、炭酸水素ナトリウム125質量部、及び防食剤としてアルキルベンゼンスルホン酸アミド1.25質量部を揺動ミキサーにて混合し、洗浄剤用組成物を粉末として得た。この粉末100gを水2.5Lに溶解し、トレー洗浄剤としてトレー防食性比較および印象材溶解性を評価した。結果を表1に示した。
【0044】
前記表1に示した各実施例に明らかなように、本発明の歯科印象トレー洗浄剤用組成物を水に溶解させて得たトレー洗浄剤は、ステンレス他いずれの材質に対しても優れた防食性を示した。一方、防食剤であるアゾール系化合物を含まない比較例1では印象材溶解性は優れているものの、錫合金及び黄銅を著しく腐食した。また、防食剤として珪酸塩を配合した比較例3及びアルキルベンゼンスルホン酸アミドを配合した比較例4では、錫合金に対する防食性は優れているものの、黄銅に対する防食効果が見られず、本発明におけるアゾール系化合物が防食剤として優れていることが明らかである。一方、過酸化水素及び/又は過酸化水素化物を配合しなかった比較例2では、疎水性液状化合物を比較的多量に含む印象材Bに対する溶解性が極めて悪かった。
【0045】
実施例8〜10、比較例5
表2に記載の割合で過炭酸ナトリウム、ベンゾチアゾール及び炭酸水素ナトリウムを混合し洗浄剤用組成物を粉末として調製した。この洗浄剤用組成物粉末100gを水2.5Lに溶解し、トレー洗浄剤として防食性、印象材溶解性を評価した。また、各トレー洗浄剤のpHも合せて測定した。これらの結果を合せて表3に示した。
【0046】
【表2】
Figure 0003907458
【0047】
【表3】
Figure 0003907458
【0048】
【発明の効果】
本発明の歯科印象トレー洗浄剤用組成物は水に溶解させて使用することにより、流動パラフィン、シリコーンオイル等の疎水性液状化合物を比較的多量に含む印象材に対する印象材溶解性にも優れ、かつトレー材質に対して腐食を起すことのない歯科印象材用トレー洗浄剤となる。これによりトレー材質の劣化が少なくてすみ、且つ、浸漬処理時間の短縮により作業効率の向上が図れる。更に、使用するトレーの材質を限定されることはなく、様々な診療スタイルにも対応が可能である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a composition for a cleaning agent that dissolves and removes an alginate impression material fixed to a dental impression tray after taking an impression in dental practice and performs cleaning.
[0002]
[Prior art]
Impression materials are used for tooth shaping for tooth restoration, and alginate impression materials are often used. The alginate impression material utilizes the fact that an alginate and calcium sulfate are kneaded in the presence of water to obtain a gel-like cured product. To mold a tooth, generally, an impression material mixture before curing is placed on a tray simulating a dentition, the tray is pressed against the tooth so as to wrap the teeth in the oral cavity, and after the impression material is cured, the tray and the cured impression material And are removed from the teeth as a whole and removed from the oral cavity. After the tooth is molded, a model of the tooth is prepared by injecting a model material (such as plaster) into the cured impression material.
[0003]
Since the tray after creating the model is used repeatedly, the attached impression material after creating the model is peeled off from the tray and used for repeated impression collection. Usually, a hole called a holding hole is formed in the tray to improve the retention of the impression material. However, when the impression material is peeled off from the tray, one impression material fixed to the holding hole on the tray surface is used. Part remains. However, this impression material residue is insoluble in water and cannot be easily removed and washed by washing alone.
[0004]
For this reason, it is necessary to use an agent called “tray cleaner for impression material”. This “tray cleaner for impression material” is generally commercially available as a powder or liquid, and is used by dissolving in water. (That is, what is actually used as a tray cleaner is an aqueous solution of the “tray cleaner for impression material”.)
The tray cleaning agent is intended to dissolve the water-insoluble alginate impression material. As a method of use, the tray with the alginate impression material attached is immersed in the cleaning agent to dissolve and remove the impression material. Therefore, when the dissolving ability is low, the immersion treatment time required for the dissolving treatment takes a long time, so that there is a problem that the working efficiency is lowered. Further, when the immersion treatment time is long, discoloration, corrosion, and the like of the tray due to various components contained in the tray cleaning agent are liable to occur, which is not preferable.
[0005]
Conventionally, various proposals have been made to improve the solubility of the impression material. For example, Japanese Patent No. 1470908 discloses a cleaning agent for impression material using percarbonate.
[0006]
Japanese Patent No. 1863470 discloses a cleaning agent composed of an amine, a quaternary ammonium salt, an acetylene compound, and a triazo compound using a chelating agent as a main dissolving agent.
[0007]
On the other hand, there are various tray materials to be dipped. Tray materials can be broadly divided into resin trays and metal trays. Resin trays are mainly made of polymethacrylate, and metal trays are made of stainless steel, tin alloy, aluminum, plated or resin-coated brass, etc. It is properly used according to the situation.
[0008]
[Problems to be solved by the invention]
However, a tray cleaning agent using percarbonate as described above, although the impression material soluble high, not good corrosion resistance for all materials used in the tray as described above, the aluminum of There is a problem that the tray is discolored or the tin alloy or brass tray is corroded. On the other hand, the tray cleaning agent described in Japanese Patent No. 1863470 has low corrosion resistance to the tray, but has only one impression material solubility, and there is room for improvement. In particular, it does not exhibit sufficient solubility for paste-type alginate impression materials that have been used in recent years due to their convenience. This is because the paste-type alginate impression material contains a large amount of hydrophobic liquid compounds such as liquid paraffin and silicone oil, such as liquid paraffin, silicone oil, etc. This seems to be because the penetration and dissolution rate is greatly reduced. Therefore, dental impression trays that are non-corrosive to all materials used as impression material trays and that have excellent impression material solubility, especially those that contain large amounts of hydrophobic liquid compounds, can be dissolved without problems. The development of a cleaning agent for use was desired.
[0009]
[Means for Solving the Problems]
As a result of intensive studies to solve the above-mentioned problems, the present inventors formulated a specific anticorrosive agent called an azole compound with respect to a composition exhibiting high impression material solubility including hydrogen peroxide or hydrogen peroxide. As a result, it was found that excellent impression material solubility and various metal anticorrosive effects were exhibited, and the present invention was completed.
[0010]
That is, the present invention relates to (1) 100 parts by mass of hydrogen peroxide and / or hydrogen peroxide , (2) 1 to 20 parts by mass of an azole compound, and (3) an alkali metal carbonate or hydrogen carbonate. A dental impression tray cleaning composition comprising 250 to 1500 parts by mass of at least one salt selected from the group consisting of a salt, a phosphate, a sulfate, and a hydrogen sulfate .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hydrogen peroxide and / or hydrogen peroxide is blended in the dental impression tray cleaning composition of the present invention. The hydrogen peroxide is a compound containing crystalline hydrogen peroxide corresponding to crystallization water, and has the property of generating hydrogen peroxide when dissolved in water.
[0012]
Specific examples of the hydrogen peroxide include sodium perborate, sodium percarbonate, sodium tripolyphosphate / hydrogen peroxide adduct, sodium pyrophosphate / hydrogen peroxide adduct, urea / hydrogen peroxide adduct, peroxidation Examples include calcium and sodium peroxide.
[0013]
In the present invention, either hydrogen peroxide or hydrogen peroxide may be used, but hydrogen peroxide is explosive at a high concentration and needs to be stored as an aqueous solution. The hydrogenated product is preferably used because it is usually solid and has high stability, and can be easily stored and distributed in a powdered packaging form and mixed with water at the time of use. In view of stability, toxicity and cleaning (dissolution) effect, it is most preferable to use sodium percarbonate. Moreover, it is also possible to use a plurality of hydrogen peroxides in combination as required.
[0014]
The hydrogenated product may have a surface coated with a coating agent to improve stability. As surface coating agents, carbonates such as sodium carbonate, potassium carbonate, magnesium carbonate, calcium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sulfates such as sodium sulfate, potassium sulfate, calcium sulfate, sodium silicate, sodium orthosilicate, meta Examples thereof include silicates such as sodium silicate and sodium sesquisilicate, and borate salts such as sodium orthoborate, sodium metaborate and sodium tetraborate. The surface coating may be performed by any known method. Among the above coating agents, silicates and borates are particularly preferable because they have cleaning ability and anticorrosion performance in addition to the effect of improving the blending stability as a coating agent.
[0015]
In the composition for a tray cleaner in the present invention, an azole compound is used as an anticorrosive. By blending an azole compound as an anticorrosive agent, it can be used as a material for dental impression trays such as stainless steel, aluminum, tin alloy, brass, etc. without reducing the solubility of impression material due to hydrogen peroxide and / or hydrogen peroxide. An anticorrosive effect for all metals used is obtained. This is a surprising effect that cannot be obtained with other anticorrosive agents, for example, S compounds such as silicates, nitrites, chromates, alkyl disulfides, and alkylbenzenesulfonamide surfactants.
[0016]
The azole compound is not particularly limited and can be a known compound, specifically, an imidazole compound such as benzimidazole, a thiazole compound such as benzothiazole, a thiadiazole compound such as benzothiadiazole, a benzotriazole, Examples thereof include triazole compounds such as 1-oxybenzotriazole, 1-N-acetylbenzotriazole, 1-N-benzoylbenzotriazole, and 5-chlorobenzotriazole. Of these, triazole compounds are preferred and benzotriazole is most preferred because of its high anticorrosive effect. These azole compounds may be used in combination of a plurality of types.
[0017]
The blending ratio of the hydrogen peroxide and / or hydrogenated product and the azole compound in the dental impression tray cleaning composition of the present invention is not particularly limited. It is preferable that the azole compound is 0.05 to 50 parts by mass, more preferably 0.5 to 40 parts by mass, and 1 to 20 parts by mass with respect to 100 parts by mass of hydrogen peroxide. This is the best.
[0018]
In addition to the above-mentioned hydrogen peroxide and / or hydrogenated product and azole compound, the dental impression tray cleaning composition of the present invention contains an alkali metal carbonate, bicarbonate, phosphate, It is preferable to blend at least one salt selected from the group consisting of sulfates and hydrogen sulfates (hereinafter, these may be collectively referred to as alkali metal salts). By blending the alkali metal salt, the impression material solubility can be further improved. Thereby, the compounding quantity of hydrogen peroxide and / or hydrogen peroxide can be relatively reduced. In particular, the aqueous solution of hydrogen peroxide is strongly alkaline, and care must be taken when handling the aqueous solution. However, by adding the alkali metal salt, the amount of hydrogen peroxide can be reduced while maintaining the same cleaning ability. Can also improve safety.
[0019]
In addition, even with the same alkali metal salt, the above-mentioned effect of improving the solubility is not observed with hydrochloride, nitrate or carboxylate.
[0020]
Specific examples of the alkali metal salt include sodium carbonate, sodium hydrogen carbonate, potassium carbonate, potassium hydrogen carbonate and the like as the alkali metal carbonate or hydrogen carbonate, and sodium phosphate, phosphorus phosphate as the alkali metal phosphate. Examples include potassium phosphate, sodium hydrogen phosphate, potassium hydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, sodium pyrophosphate, potassium pyrophosphate, sodium tripolyphosphate, potassium tripolyphosphate, and the like. Specific examples of alkali metal sulfates or hydrogen sulfates include sodium sulfate, potassium sulfate, sodium hydrogen sulfate, and potassium hydrogen sulfate. Of these, as the carbonate or bicarbonate, sodium bicarbonate is preferable, as the phosphate, sodium phosphate, sodium pyrophosphate, and sodium tripolyphosphate are preferable, and as the sulfate or hydrogen sulfate, sodium sulfate is preferable. .
[0021]
The above alkali metal salts can be used alone or in combination of a plurality of types as required.
[0022]
The blending amount of the alkali metal salt is not particularly limited, but in consideration of the solubility of the impression material and the pH when it is used as an aqueous solution described later, preferably hydrogen peroxide and / or hydrogen peroxide 100 mass. It is 10-10000 mass parts with respect to a part, Preferably it is 20-2000 mass parts, Most preferably, it is 250-1500 mass parts. By setting it within this range, it is possible to obtain a tray cleaning agent having a pH (9.5 or less, preferably 9 or less) that can be said to be safe even when adhering to the human body or the like by mistake while maintaining sufficient impression material solubility. .
[0023]
The dental impression tray cleaning composition of the present invention can be blended with other additives such as coloring agents and fragrances without any limitation as other components.
[0024]
The dental impression tray cleaning composition of the present invention is usually dissolved in water and used as a tray cleaning agent. The water is not particularly limited, and tap water, ion exchange water, distilled water, or the like may be used.
[0025]
When dissolved in water, the concentration of hydrogen peroxide and / or hydrogen peroxide is 0.001 to 20% by mass and the concentration of the azole compound is 0.0001 to 2% by mass. It is preferable that the concentration of hydrogen peroxide and / or hydrogen peroxide is 0.1 to 10% by mass and the concentration of the azole compound is 0.005 to 0.5% by mass. It is particularly preferable to adjust the amount.
[0026]
In addition, when the alkali metal salt is blended, the concentration of hydrogen peroxide and / or hydrogen peroxide and azole compound is within the above range, and hydrogen peroxide and / or hydrogen peroxide and alkali Most preferably, the total amount of metal salts is adjusted to a concentration of 0.5 to 30% by mass.
[0027]
The dental impression tray cleaning composition of the present invention may be in the form of powder or liquid, but in consideration of convenience during storage and distribution, it is preferably in the form of powder. In this case, hydrogen peroxide is used. As described above, the powdery detergent composition may be used by dissolving in water at the time of use. When hydrogen peroxide is used, it is preferable to use a liquid composition containing water in consideration of safety and further dilute with water at the time of use. Of course, it is also possible to make a liquid composition using hydrogen peroxide.
[0028]
The method for producing the dental impression tray cleaning composition of the present invention is not particularly limited, and can be adjusted by mixing each component to be blended by a known method.
[0029]
【Example】
EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not restrict | limited to these Examples.
[0030]
The performance of the cleaning agent was evaluated according to the following method.
(1) Anticorrosiveness of trays Dental impression trays of various materials generally used were completely immersed in a cleaning agent of about 2.5 L, and taken out after one week. The surface of the tray was observed with the naked eye, and the case where there was no change was indicated as ◯, the case where rust or discoloration was partially observed was indicated as Δ, and the case where rust was floating on the entire surface was indicated as ×.
(2) Solubility of impression material Commercially available alginate impression material “Tokuso A-lα” (trade name: manufactured by Tokuyama Dental Co., Ltd .; powder type impression material; hereinafter referred to as Impression Material A) and “Tokuso AP-l” (Trade name: manufactured by Tokuyama Dental Co., Ltd .; a paste type impression material containing about 10% of a hydrophobic liquid compound. Hereinafter, impression material B) was kneaded and prepared by the method specified by the manufacturer, and the diameter was 13 mm, and the height was high. The impression material cured body was obtained by curing in a cylindrical mold having a thickness of 20 mm. The cured body was immersed in 250 ml of a cleaning agent, taken out after 5 hours and dried, and then the change in weight was measured. A case where the weight reduction rate was 30% or more was evaluated as ◯, a case where it was less than 15%, and a case where it was 15-30% was evaluated as Δ.
[0031]
Example 1
100 parts by weight of sodium percarbonate, 2.5 parts by weight of benzotriazole, and 500 parts by weight of sodium bicarbonate, which were surface-coated with sodium silicate, were mixed with a rocking mixer to obtain a composition for a cleaning agent as a powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion and impression material solubility were evaluated as a tray cleaner.
[0032]
These evaluation results are shown in Table 1. As shown in Table 1, both the A and B impression materials were satisfactorily dissolved while exhibiting excellent anticorrosion properties for any tray.
[0033]
[Table 1]
Figure 0003907458
[0034]
Example 2
100 parts by weight of sodium percarbonate, 0.2 part by weight of benzothiazole, and 200 parts by weight of sodium phosphate were mixed with a rocking mixer to obtain a composition for cleaning agent as powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0035]
Example 3
100 parts by mass of sodium percarbonate, 3.3 parts by mass of benzotriazole, and 333 parts by mass of sodium sulfate that had been surface-coated with sodium silicate were mixed using a rocking mixer to obtain a cleaning composition as a powder. 100 g of this powder was dissolved in 2.5 L of water to prepare a tray cleaning agent, and tray anticorrosion property comparison and impression material solubility were evaluated. The results are shown in Table 1.
[0036]
Example 4
100 parts by mass of sodium perborate, 1.3 parts by mass of benzimidazole, 266 parts by mass of sodium hydrogen carbonate, and 67 parts by mass of sodium pyrophosphate were mixed with an oscillating mixer to obtain a cleaning composition as a powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0037]
Example 5
100 parts by weight of sodium percarbonate surface-treated with sodium borate, 10 parts by weight of benzotriazole, 500 parts by weight of sodium carbonate, and 500 parts by weight of sodium tripolyphosphate are mixed in an oscillating mixer, and the detergent composition is powdered. Obtained. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0038]
Example 6
100 parts by weight of sodium perborate surface-treated with sodium borate, 1.3 parts by weight of 5-chlorobenzotriazole, 125 parts by weight of sodium carbonate, and 125 parts by weight of sodium bicarbonate are mixed with a rocking mixer for use as a cleaning agent. The composition was obtained as a powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0039]
Example 7
100 parts by weight of sodium percarbonate surface-treated with sodium borate, 10 parts by weight of benzotriazole, 600 parts by weight of sodium bicarbonate, 200 parts by weight of sodium tripolyphosphate, and 200 parts by weight of sodium sulfate are mixed with a rocking mixer and washed. The pharmaceutical composition was obtained as a powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0040]
Comparative Example 1
100 parts by mass of sodium percarbonate and 100 parts by mass of sodium hydrogen carbonate were mixed with a rocking mixer to obtain a cleaning composition as a powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0041]
Comparative Example 2
0.5 parts by mass of benzotriazole, 50 parts by mass of sodium tripolyphosphate, and 50 parts by mass of sodium hydrogen carbonate were mixed with a rocking mixer to obtain a cleaning composition as a powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0042]
Comparative Example 3
100 parts by mass of sodium percarbonate, 250 parts by mass of sodium hydrogen carbonate, and 10 parts by mass of sodium orthosilicate as an anticorrosive agent were mixed in an oscillating mixer to obtain a cleaning composition as a powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0043]
Comparative Example 4
100 parts by weight of sodium perborate surface-treated with sodium borate, 125 parts by weight of sodium carbonate, 125 parts by weight of sodium hydrogen carbonate, and 1.25 parts by weight of alkylbenzene sulfonic acid amide as an anticorrosive agent were mixed in a rocking mixer, A cleaning composition was obtained as a powder. 100 g of this powder was dissolved in 2.5 L of water, and tray anticorrosion property comparison and impression material solubility were evaluated as a tray cleaner. The results are shown in Table 1.
[0044]
As is clear from each example shown in Table 1, the tray cleaner obtained by dissolving the dental impression tray cleaner composition of the present invention in water was superior to any other materials such as stainless steel. Corrosion protection was shown. On the other hand, in Comparative Example 1 which does not contain an azole compound which is an anticorrosive, the impression material solubility was excellent, but the tin alloy and brass were significantly corroded. Further, in Comparative Example 3 in which silicate was blended as an anticorrosive and Comparative Example 4 in which alkylbenzene sulfonic acid amide was blended, the corrosion resistance against tin alloy was excellent, but the corrosion resistance against brass was not observed, and the azole according to the present invention It is clear that the compounds are excellent as anticorrosives. On the other hand, in Comparative Example 2 in which hydrogen peroxide and / or hydrogen peroxide was not blended, the solubility in the impression material B containing a relatively large amount of the hydrophobic liquid compound was extremely poor.
[0045]
Examples 8 to 10, Comparative Example 5
A detergent composition was prepared as a powder by mixing sodium percarbonate, benzothiazole and sodium bicarbonate in the proportions shown in Table 2. 100 g of this detergent composition powder was dissolved in 2.5 L of water, and anticorrosion and impression material solubility were evaluated as a tray cleaner. Moreover, the pH of each tray cleaner was also measured. These results are shown in Table 3.
[0046]
[Table 2]
Figure 0003907458
[0047]
[Table 3]
Figure 0003907458
[0048]
【The invention's effect】
The composition for cleaning a dental impression tray of the present invention is excellent in solubility in an impression material for an impression material containing a relatively large amount of a hydrophobic liquid compound such as liquid paraffin and silicone oil by being used by dissolving in water. Moreover, it becomes a tray cleaning agent for dental impression materials that does not cause corrosion on the tray material. Thereby, the deterioration of the tray material can be reduced, and the working efficiency can be improved by shortening the dipping time. Furthermore, the material of the tray to be used is not limited, and can correspond to various medical treatment styles.

Claims (1)

(1)過酸化水素及び/又は過酸化水素化物100質量部に対して、(2)アゾール系化合物1〜20質量部、並びに(3)アルカリ金属の炭酸塩、炭酸水素塩、リン酸塩、硫酸塩、及び硫酸水素塩よりなる群から選ばれる少なくとも一種の塩250〜1500質量部を含有することを特徴とする歯科印象トレー洗浄剤用組成物。(1) per 100 parts by mass of hydrogen peroxide and / or hydrogen peroxide , (2) 1-20 parts by mass of an azole compound, and (3) alkali metal carbonates, hydrogen carbonates, phosphates, A dental impression tray cleaning composition comprising 250 to 1500 parts by mass of at least one salt selected from the group consisting of sulfate and hydrogen sulfate .
JP2001365656A 2001-11-30 2001-11-30 Dental impression tray cleaning composition Expired - Lifetime JP3907458B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001365656A JP3907458B2 (en) 2001-11-30 2001-11-30 Dental impression tray cleaning composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001365656A JP3907458B2 (en) 2001-11-30 2001-11-30 Dental impression tray cleaning composition

Publications (3)

Publication Number Publication Date
JP2003165997A JP2003165997A (en) 2003-06-10
JP2003165997A5 JP2003165997A5 (en) 2005-04-07
JP3907458B2 true JP3907458B2 (en) 2007-04-18

Family

ID=19175650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001365656A Expired - Lifetime JP3907458B2 (en) 2001-11-30 2001-11-30 Dental impression tray cleaning composition

Country Status (1)

Country Link
JP (1) JP3907458B2 (en)

Also Published As

Publication number Publication date
JP2003165997A (en) 2003-06-10

Similar Documents

Publication Publication Date Title
EP2326704B1 (en) Granular cleaning and disinfecting composition
JP5654201B2 (en) Stable one-part aqueous tooth whitening composition
US20080096784A1 (en) Composition for Cleaning Dental Instruments and Process
MY153728A (en) Foamable fluoride oral care composition
US4851146A (en) Phosphonic acid derivative based agents for cleaning and dissolving tartar of removable oral prostheses
JP3184921B2 (en) Tablet scale cleaner
JP3907458B2 (en) Dental impression tray cleaning composition
GB2095694A (en) Tooth cleaning compositions
JP4189200B2 (en) Detergent composition for alginate impression material
JP4105936B2 (en) Detergent composition for alginate impression material
JPH04506655A (en) Fluoride mouthwashes, dentifrices, gels and chewable tablets
JP5210243B2 (en) Phosphorus-free granular detergent and method for producing phosphorus-free granular detergent
JP2007254419A (en) Dental whitener
EP0273450B1 (en) Solubilizer for water-insoluble alginates in dental impression materials
RU2239413C1 (en) Teeth care agent
JP3415268B2 (en) Cleaning agent for dental impression material tray
JP4276515B2 (en) Cleaning agent for trays for dental impression materials
AU628856B2 (en) Process for the treatment of dental impressions and aqueous disinfectant solutions suitable for this purpose
CA2570970A1 (en) Composition for cleaning dental instruments and process
JP4860223B2 (en) Tray cleaning composition for impression
JP4054085B2 (en) Cleaning agent for impression material tray and cleaning method for impression material tray
JP2016069291A (en) Tooth bleaching composition
JPH11228329A (en) Root canal filler for dentistry
JPS6024839B2 (en) Bath pot cleaning agent
KR101080245B1 (en) Tray cleaner compositions for alginate-impression

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040528

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040528

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050128

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050207

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050408

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: 20070109

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070116

R150 Certificate of patent or registration of utility model

Ref document number: 3907458

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130126

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130126

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20160126

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20160126

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20160126

Year of fee payment: 9

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term