JP2001245902A - Nozzle for hard particle jet type polishing machine and hard particle jet type polishing machine - Google Patents
Nozzle for hard particle jet type polishing machine and hard particle jet type polishing machineInfo
- Publication number
- JP2001245902A JP2001245902A JP2000063306A JP2000063306A JP2001245902A JP 2001245902 A JP2001245902 A JP 2001245902A JP 2000063306 A JP2000063306 A JP 2000063306A JP 2000063306 A JP2000063306 A JP 2000063306A JP 2001245902 A JP2001245902 A JP 2001245902A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- polishing machine
- particle jet
- hard particle
- hard
- 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.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
- A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
- A61C3/025—Instruments acting like a sandblast machine, e.g. for cleaning, polishing or cutting teeth
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は虫歯治療等に用いら
れる硬質粒子噴射式研磨機に使用される硬質粒子噴射式
研磨機用ノズルとそれを用いた硬質粒子噴射式研磨機に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle for a hard particle jet polishing machine used in a hard particle jet polishing machine used for caries treatment and the like, and a hard particle jet polishing machine using the same.
【０００２】[0002]
【従来の技術】歯科治療では、虫歯菌により浸食された
部分を除去する必要があるが、そのときアルミナ等の硬
質粒子を圧縮空気を媒体として小口径のノズルから虫歯
患部に高圧で噴射して患部を除去する硬質粒子噴射式研
磨機が使用されている。2. Description of the Related Art In dental treatment, it is necessary to remove a portion that has been eroded by caries. At that time, hard particles such as alumina are sprayed at high pressure from a small-diameter nozzle into a carious lesion using compressed air as a medium. A hard particle jet type polishing machine for removing an affected part is used.
【０００３】[0003]
【発明が解決しようとする課題】アルミナ等の硬質粒子
を患部に高速で噴射し、その粒子の運動エネルギーによ
る研磨作用を利用する硬質粒子噴射式研磨機では、硬質
粒子が噴射されるノズル先端部に圧縮空気を媒体とした
アルミナ等の硬質粒子が高速で衝突するのでノズル先端
の摩耗が激しいという問題があった。本発明は、前記ノ
ズル先端の摩耗を抑え正確な治療と作業効率のよい硬質
粒子噴射式研磨機を提供することを目的とする。In a hard particle jet type polisher in which hard particles such as alumina are jetted at a high speed to an affected part and a polishing action by the kinetic energy of the particles is used, a nozzle tip at which hard particles are jetted is used. In addition, since hard particles such as alumina using compressed air as a medium collide at a high speed, there is a problem that the tip of the nozzle is severely worn. SUMMARY OF THE INVENTION It is an object of the present invention to provide a hard particle jet type polishing machine which suppresses abrasion of the nozzle tip and provides accurate treatment and high working efficiency.
【０００４】[0004]
【課題を解決するための手段】前記課題を解決するため
には、硬質粒子噴射式研磨機の噴射ノズル先端部の耐摩
耗性を向上させなければならない。そのためには噴射ノ
ズル先端部に硬質材料を使用する必要がある。アルミナ
等の硬質粒子を噴射材料として使用する場合、種々実験
の結果、ノズル先端部の材料としてＨＲＡ９３（ＨＶ１
９００）以上の硬さを有する材料が必要であることが判
明した。また、硬度が大きくても耐衝撃性が小さいと硬
質粒子の衝突により破損するので耐衝撃性が大きいもの
でなければならず、更に口内で使用するのでノズル構成
材料が有害であってはならない。そこで、硬質粒子噴射
式研磨機の噴射ノズル先端部材として次のようなＷＣ基
硬質材料からなるものにすれば前記課題を解決できるこ
とがわかった。ＷＣ基硬質材料は、ＷＣを主体とする炭
化物とし、ＷＣの一部を、硬度を向上させ微細で緻密な
材料を得る目的でＴｉ、Ｔａ、Ｎｂ、Ｈｆ、Ｃｒ、Ｖの
炭化物、窒化物、酸化物の１種または2種以上によって
置換したものであり、さらに靭性や耐衝撃性を向上する
目的で前記ＷＣ基硬質材料においてＮｉ、Ｃｏ、Ｃｒ、
Ｆｅ等の鉄系金属からなる金属結合相を全量に対し、１
重量％未満（０を含まず）含有した焼結体としてもよ
い。ここで、鉄系金属量が１重量％以上になると硬度が
低下し耐食性、耐摩耗性が十分でないので１重量％未満
（０を含まず）とするのが好ましい。また用いるＷＣ粉
末のＷＣ粒子径は小さいほど高硬度の材料が得られるの
で、ＷＣ粒子径は１０μｍより小さい方が良い。噴射ノ
ズル全体をＷＣ基硬質材料で形成すれば良いのだが、複
雑形状であるのと射出成形等で成形しても高価であるの
で、硬質粒子噴射式研磨機の細管状の噴射ノズル胴体
を、加工性に富み、口内で使用しても錆、腐食の発生も
少ないＳＵＳ３１６Ｌ等のオーステナイト系ステンレス
鋼等で形成しそのノズル先端部に前記ＷＣ基硬質材料で
形成された貫通細孔を有するスリーブをロー付、溶接、
接着剤を用いて接着、ネジ止めもしくは嵌合にて接合し
一体化し必要形状とすれば要求される耐摩耗性が得られ
る。そしてこの本発明の硬質粒子噴射式研磨機用ノズル
を使用した硬質粒子噴射式研磨機によれば、正確で効率
のよい歯科治療が可能となる。In order to solve the above-mentioned problems, it is necessary to improve the wear resistance of the tip of the injection nozzle of the hard particle injection type polishing machine. For that purpose, it is necessary to use a hard material at the tip of the injection nozzle. When hard particles such as alumina are used as the injection material, as a result of various experiments, HRA93 (HV1
It has been found that a material having a hardness of at least 900) is required. Also, even if the hardness is high, if the impact resistance is low, the particles are damaged by the impact of hard particles. Therefore, the impact resistance must be high, and since the nozzle is used in the mouth, the material constituting the nozzle must not be harmful. Therefore, it has been found that the above problem can be solved by using the following WC-based hard material as the injection nozzle tip member of the hard particle injection polishing machine. The WC-based hard material is a carbide mainly composed of WC, and a part of WC is made of carbides, nitrides, carbides of Ti, Ta, Nb, Hf, Cr, V for the purpose of improving hardness and obtaining a fine and dense material. Ni, Co, Cr, etc. in the WC-based hard material for the purpose of further improving toughness and impact resistance.
The amount of the metal binder phase composed of an iron-based metal such as Fe
A sintered body containing less than 0% by weight (not including 0) may be used. Here, when the amount of the iron-based metal is 1% by weight or more, the hardness is lowered, and the corrosion resistance and the wear resistance are not sufficient. Therefore, it is preferable to set the amount to less than 1% by weight (not including 0). Further, since a material having higher hardness can be obtained as the WC particle diameter of the WC powder used is smaller, the WC particle diameter is preferably smaller than 10 μm. Although the entire injection nozzle may be formed of a WC-based hard material, it is expensive even if it is formed by injection molding or the like because of its complicated shape. A sleeve formed of austenitic stainless steel such as SUS316L and the like, which is rich in processability and causes less rust and corrosion even when used in the mouth, and has a through-hole formed of the WC-based hard material at the nozzle tip portion. Brazing, welding,
The required abrasion resistance can be obtained by bonding and bonding with an adhesive to form the required shape. According to the hard particle jet polishing machine using the nozzle for the hard particle jet polishing machine of the present invention, accurate and efficient dental treatment can be performed.
【０００５】[0005]
【発明の実施の形態】請求項１記載の本発明は、細管状
のノズル胴体先端に貫通孔を有する先端部品が設けられ
た硬質粒子を噴射する硬質粒子噴射式研磨機用ノズルに
おいて、先端部品が、Ｔｉ、Ｔａ、Ｎｂ、Ｈｆ、Ｃｒ、
Ｖの炭化物、窒化物の１種または２種以上を含有し、残
部がＷＣからなるＷＣ基硬質材であることを特徴とする
硬質粒子噴射式研磨機用ノズルである。本発明のノズル
を使用すれば、圧縮空気を媒体とした硬質粒子が高速で
ノズル部に衝突しても従来のステンレス製の硬質粒子噴
射式研磨機用ノズルと比較すると耐摩耗性が向上し寿命
が延びる。請求項２記載の本発明は、先端部品がロー付
け、溶接、接着、ネジ止め又は嵌合によりノズル胴体に
接合されたことを特徴とする請求項１記載の硬質粒子噴
射式研磨機用ノズルである。本発明のノズルは、他の方
法で接合されたものより接合強度が大きく、圧縮空気を
媒体とした硬質粒子が高速でノズル部に衝突しても容易
に脱落することなく、従来のステンレス製の硬質粒子噴
射式研磨機用ノズルと比較しても耐摩耗性が向上し寿命
が延びる。請求項３記載の本発明は、Ｃｏ、Ｎｉおよび
Ｆｅのうち1種または2種以上がＷＣ基硬質材料の全量に
対し１重量％未満（０を含まず）含有することを特徴と
する請求項１又は請求項２に記載の硬質粒子噴射式研磨
機用ノズルである。本発明のノズルによれば、ノズル先
端部品が金属相を含まないＷＣ基硬質材料を使用したも
のより靭性があり耐衝撃性があるので、より長寿命であ
る。請求項４記載の本発明は、請求項１から請求項３の
いずれかに記載の硬質粒子噴射式研磨機用ノズルを有す
ることを特徴とする硬質粒子噴射式研磨機である。本発
明のノズルを有する硬質粒子噴射式研磨機を用いれば、
従来の硬質粒子噴射式研磨機よりノズルの交換頻度が少
なく、摩耗によりノズルの口径が広がりにくいので虫歯
の治療が正確で効率よくできる。以下本発明を実施例に
より詳細に説明する。 実施例 ＷＣを主成分としＴｉＣ、ＴｉＮ、ＴａＣ等を含有する
平均粒径０．３〜７μｍの粉末と前記総重量に対してＣ
ｏ、ＮｉまたはＦｅを総量で０．３重量％含有した平均
粒径０．３〜７μｍの粉末のそれぞれの粉末にこれらの
粉末の体積以上の濃度９５％エタノールを添加してボー
ルミルにより粉砕、混合し、乾燥後使用形状にプレス成
形した。これらを真空中１３００℃〜１７００℃にて焼
結した。得られた焼結体を所定形状に加工し、レーザー
や放電加工により直径１ｍｍの硬質粒子噴射用貫通孔を
設け、予めＳＵＳ３１６Ｌで製作しておいた噴射ノズル
胴体の先端に嵌合により一体化して本発明の硬質粒子噴
射式研磨機用ノズルを作成した。これを硬質粒子噴射式
研磨機に接続して平均粒径２７μmのアルミナ粒子を圧
縮空気により圧力０．８ＭＰａで連続噴射を行い、従来
のステンレス製の硬質粒子噴射式研磨機用ノズルとの寿
命を比較した。図１は本発明の硬質粒子噴射式研磨機用
ノズルを示す。図中、１は先端部品、２はノズル胴体を
示す。 実施例１ 前記のようにして作成した本発明の硬質粒子噴射式研磨
機用ノズルで、先端部品がＷＣ９５重量％、ＴｉＣ３重
量％、ＴａＣ２重量％、Ｃｒ3Ｃ2０．５重量％、残部不
可避混入成分からなるＷＣ基硬質材料を用いたものは、
従来の先端部がＳＵＳ３１６Ｌステンレス鋼製のものと
寿命を比較すると、本発明のものは約４０倍寿命が延び
た。その他、先端部品が、Ｔｉ、Ｔａ、Ｎｂ、Ｈｆ、Ｃ
ｒ、Ｖの炭化物、窒化物の１種または２種以上を含有
し、残部がＷＣからなるＷＣ基硬質材からなる本発明の
硬質粒子噴射式研磨機用ノズルでも同様の結果となっ
た。 実施例２ 前記のように、ＳＵＳ３１６Ｌで製作しておいた噴射ノ
ズル胴体の先端に先端部品を嵌合により一体化して本発
明の硬質粒子噴射式研磨機用ノズルを作成したものは、
ロー付け、溶接、接着又は先端部品の根元部に設けた雄
ネジとノズル胴体先端に設けた雌ネジによるネジ止めに
よる本発明の硬質粒子噴射式研磨機用ノズルと同様、加
締め、絞り等の方法で固定するものより先端部品が脱落
を起すことがなく、従来の先端部がＳＵＳ３１６Ｌステ
ンレス鋼製のものと摩耗量を比較すると、本発明のもの
は約４０倍寿命が延びた。 実施例３ 前記のようにＣｏ、ＮｉおよびＦｅのうち1種または2種
以上がＷＣ基硬質材料の全量に対し０．３重量％含有す
る硬質粒子噴射式研磨機用ノズルは、前記鉄族元素を含
まない本発明の硬質粒子噴射式研磨機用ノズルより硬度
は低下するが靭性が大きいので、他の器具にぶつけた
り、落下させて先端部品に衝撃が加わっても破損するこ
とはなかった。従来の先端部がＳＵＳ３１６Ｌステンレ
ス鋼製のものと摩耗量を比較すると、本発明のものは約
４０倍寿命が延びた。 実施例４ 前記のように、硬質粒子噴射式研磨機用ノズルを有する
硬質粒子噴射式研磨機は、従来の先端部がＳＵＳ３１６
Ｌステンレス鋼製の硬質粒子噴射式研磨機用ノズルを有
する硬質粒子噴射式研磨機と比較すると、約４０倍寿命
が延び、ノズルの交換頻度が従来の約１／４０となり、
ノズルの口径が摩耗により大きくならず正確で効率よく
作業ができる。DETAILED DESCRIPTION OF THE INVENTION The present invention according to claim 1 is directed to a nozzle for a hard particle jet type polishing machine for jetting hard particles provided with a tip part having a through hole at the tip of a thin tubular nozzle body. Are Ti, Ta, Nb, Hf, Cr,
A nozzle for a hard particle jet type polishing machine, characterized in that it is a WC-based hard material containing one or more of carbides and nitrides of V and a balance of WC. When the nozzle of the present invention is used, even if hard particles using compressed air as a medium collide with the nozzle portion at high speed, the wear resistance is improved and the life is improved as compared with a conventional stainless steel hard particle spray type polishing machine nozzle. Extends. According to a second aspect of the present invention, there is provided a nozzle for a hard particle jet polishing machine according to the first aspect, wherein the tip part is joined to the nozzle body by brazing, welding, bonding, screwing or fitting. is there. The nozzle of the present invention has a higher bonding strength than that bonded by another method, and hard particles using compressed air as a medium do not easily fall off even if the hard particles collide with the nozzle portion at high speed. The wear resistance is improved and the life is prolonged as compared with a nozzle for a hard particle jet type polishing machine. According to a third aspect of the present invention, one or more of Co, Ni and Fe are contained in an amount of less than 1% by weight (not including 0) based on the total amount of the WC-based hard material. A nozzle for a hard particle jet polishing machine according to claim 1 or 2. According to the nozzle of the present invention, since the nozzle tip part is tougher and more impact-resistant than one using a WC-based hard material containing no metal phase, it has a longer life. According to a fourth aspect of the present invention, there is provided a hard particle jet polishing machine having the nozzle for a hard particle jet polishing machine according to any one of the first to third aspects. By using a hard particle jet type polishing machine having the nozzle of the present invention,
The frequency of replacement of the nozzle is less than that of a conventional hard particle spray type polishing machine, and the diameter of the nozzle is hardly widened due to abrasion. Hereinafter, the present invention will be described in detail with reference to examples. Example A powder having an average particle diameter of 0.3 to 7 μm containing WC as a main component and containing TiC, TiN, TaC, etc. and C based on the total weight.
To each of powders having an average particle size of 0.3 to 7 μm containing 0.3% by weight of o, Ni or Fe in total, 95% ethanol having a concentration equal to or greater than the volume of these powders is added and ground and mixed by a ball mill. After drying, it was press-molded into a use shape. These were sintered at 1300 ° C to 1700 ° C in a vacuum. The obtained sintered body is processed into a predetermined shape, a through hole for injection of hard particles having a diameter of 1 mm is provided by laser or electric discharge machining, and integrated with a tip of an injection nozzle body previously manufactured by SUS316L by fitting. A nozzle for a hard particle jet polishing machine of the present invention was prepared. This was connected to a hard particle jet type polishing machine, and alumina particles having an average particle diameter of 27 μm were continuously jetted with compressed air at a pressure of 0.8 MPa to extend the life of a conventional stainless steel hard particle jet type polishing machine nozzle. Compared. FIG. 1 shows a nozzle for a hard particle jet type polishing machine according to the present invention. In the figure, reference numeral 1 denotes a tip part, and 2 denotes a nozzle body. Example 1 With the nozzle for a hard particle jet type polishing machine of the present invention prepared as described above, the tip parts were WC 95% by weight, TiC 3 % by weight, TaC 2 % by weight, Cr 3 C 2 0.5% by weight, and the remainder was inevitable. Those using a WC-based hard material composed of mixed components
When comparing the life of the conventional tip made of SUS316L stainless steel, the life of the present invention is increased by about 40 times. In addition, the leading parts are Ti, Ta, Nb, Hf, C
The same result was obtained with the nozzle for a hard particle jet polisher of the present invention comprising one or more of the carbides and nitrides of r and V and the balance being a WC-based hard material composed of WC. Example 2 As described above, a nozzle for a hard particle jet type polishing machine of the present invention was produced by fitting a tip part to a tip of an injection nozzle body made of SUS316L by fitting,
Like the nozzle for the hard particle jet polishing machine of the present invention, which is screwed by brazing, welding, bonding or screwing with a male screw provided at the root of the tip part and a female screw provided at the tip of the nozzle body, caulking, drawing, etc. The tip part did not fall off as compared with the one fixed by the method, and when the conventional tip part was made of SUS316L stainless steel and compared with the wear amount, the life of the thing of the present invention was extended about 40 times. Example 3 As described above, the nozzle for a hard particle jet polisher in which one or more of Co, Ni and Fe are contained in an amount of 0.3% by weight based on the total amount of the WC-based hard material, Although the hardness is lower than that of the nozzle for a hard particle jet polishing machine according to the present invention which does not contain, the toughness is large, so that it is not damaged even if it is hit against other equipment or dropped and a tip part is impacted. When the wear amount is compared with that of the conventional tip made of SUS316L stainless steel, the life of the present invention is increased by about 40 times. Example 4 As described above, the conventional hard particle jet polishing machine having a nozzle for a hard particle jet polishing machine has a conventional tip of SUS316.
Compared to a hard particle jet polisher having a nozzle for L stainless steel hard particle jet polisher, the service life is extended about 40 times and the frequency of nozzle replacement is about 1/40 of the conventional one,
The working of the nozzle can be performed accurately and efficiently without increasing the diameter of the nozzle due to wear.
【０００６】[0006]
【発明の効果】硬質粒子噴射式研磨機において噴射ノズ
ルのノズル先端部に、本発明ＷＣ基硬質材料性ノズルを
使用することにより、ノズルの寿命が従来の鉄系ノズル
に比べ約40倍と長くなり、虫歯治療中のノズル交換頻度
を押さえることができ作業効率がよくなる。また本発明
ＷＣ基硬質材料製ノズルを使用することにより、近年問
題となっている金属の人体に及ぼす影響として、コバル
ト金属による発癌性の問題、またニッケルによる金属ア
レルギーの問題もきわめて低減しあるいは無くすことが
できる。According to the present invention, the use of the WC-based hard material nozzle of the present invention at the tip of the injection nozzle in the hard particle injection type polishing machine makes the life of the nozzle approximately 40 times longer than that of the conventional iron-based nozzle. In other words, the frequency of nozzle replacement during dental caries treatment can be reduced, and work efficiency can be improved. In addition, the use of the nozzle made of a WC-based hard material of the present invention significantly reduces or eliminates the problems of carcinogenicity caused by cobalt metal and metal allergy caused by nickel as the effects of metal on the human body, which have become a problem in recent years. be able to.
【図１】図１は、本発明の硬質粒子噴射式研磨機用ノズ
ルの断面図を示す。FIG. 1 is a cross-sectional view of a nozzle for a hard particle jet polisher of the present invention.
１先端部品、２ノズル胴体 1 tip part, 2 nozzle body
Claims (4)
先端部品が設けられた硬質粒子を噴射する硬質粒子噴射
式研磨機用ノズルにおいて、先端部品が、Ｔｉ、Ｔａ、
Ｎｂ、Ｈｆ、Ｃｒ、Ｖの炭化物、窒化物の1種または2種
以上を含有し、残部がＷＣからなるＷＣ基硬質材である
ことを特徴とする硬質粒子噴射式研磨機用ノズル。1. A hard particle jet polishing machine nozzle for jetting hard particles provided with a tip part having a through-hole at the tip of a thin tubular nozzle body, wherein the tip part is made of Ti, Ta,
A nozzle for a hard particle jet type polishing machine, characterized in that it is a WC-based hard material containing one or more of carbides and nitrides of Nb, Hf, Cr and V, with the balance being WC.
め又は嵌合によりノズル胴体に接合されたことを特徴と
する請求項１記載の硬質粒子噴射式研磨機用ノズル。2. A nozzle for a hard particle jet polishing machine according to claim 1, wherein the tip part is joined to the nozzle body by brazing, welding, bonding, screwing or fitting.
種以上がＷＣ基硬質材料の全量に対し１重量％未満（０
を含まず）含有することを特徴とする請求項１又は請求
項２に記載の硬質粒子噴射式研磨機用ノズル。3. One or more of Co, Ni and Fe
More than 1% by weight based on the total weight of the WC-based hard material (0%
3. The nozzle for a hard particle jet polishing machine according to claim 1, wherein the nozzle comprises:
硬質粒子噴射式研磨機用ノズルを有することを特徴とす
る硬質粒子噴射式研磨機。4. A hard particle jet polishing machine comprising the nozzle for a hard particle jet polishing machine according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000063306A JP2001245902A (en) | 2000-03-03 | 2000-03-03 | Nozzle for hard particle jet type polishing machine and hard particle jet type polishing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000063306A JP2001245902A (en) | 2000-03-03 | 2000-03-03 | Nozzle for hard particle jet type polishing machine and hard particle jet type polishing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001245902A true JP2001245902A (en) | 2001-09-11 |
Family
ID=18583194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000063306A Withdrawn JP2001245902A (en) | 2000-03-03 | 2000-03-03 | Nozzle for hard particle jet type polishing machine and hard particle jet type polishing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001245902A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281199A (en) * | 2004-03-30 | 2005-10-13 | Sun Medical Co Ltd | Dental polishing material |
| WO2012123726A3 (en) * | 2011-03-11 | 2012-11-15 | Osspray Limited | Dental tip |
| CN112059924A (en) * | 2020-09-18 | 2020-12-11 | 香港理工大学 | Fluid linear jet polishing device and application method thereof |
-
2000
- 2000-03-03 JP JP2000063306A patent/JP2001245902A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281199A (en) * | 2004-03-30 | 2005-10-13 | Sun Medical Co Ltd | Dental polishing material |
| JP4599076B2 (en) * | 2004-03-30 | 2010-12-15 | サンメディカル株式会社 | Dental polishing material |
| WO2012123726A3 (en) * | 2011-03-11 | 2012-11-15 | Osspray Limited | Dental tip |
| CN112059924A (en) * | 2020-09-18 | 2020-12-11 | 香港理工大学 | Fluid linear jet polishing device and application method thereof |
| CN112059924B (en) * | 2020-09-18 | 2022-01-11 | 香港理工大学 | Fluid linear jet polishing device and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20070605 |