JPH01256949A - Artificial crown of tooth - Google Patents
Artificial crown of toothInfo
- Publication number
- JPH01256949A JPH01256949A JP63085615A JP8561588A JPH01256949A JP H01256949 A JPH01256949 A JP H01256949A JP 63085615 A JP63085615 A JP 63085615A JP 8561588 A JP8561588 A JP 8561588A JP H01256949 A JPH01256949 A JP H01256949A
- Authority
- JP
- Japan
- Prior art keywords
- crown
- tooth
- hard carbon
- resin
- thin film
- 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.)
- Pending
Links
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 229910021385 hard carbon Inorganic materials 0.000 claims abstract description 13
- 239000010409 thin film Substances 0.000 claims abstract description 13
- 210000000332 tooth crown Anatomy 0.000 claims description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010408 film Substances 0.000 abstract description 5
- 238000005268 plasma chemical vapour deposition Methods 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 239000000178 monomer Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229920000058 polyacrylate Polymers 0.000 description 4
- -1 4-(3-methacryloxy-2-hydroxypropoxy)-phenyl Chemical group 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XFCMNSHQOZQILR-UHFFFAOYSA-N 2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOC(=O)C(C)=C XFCMNSHQOZQILR-UHFFFAOYSA-N 0.000 description 2
- HWSSEYVMGDIFMH-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOC(=O)C(C)=C HWSSEYVMGDIFMH-UHFFFAOYSA-N 0.000 description 2
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- HSOOIVBINKDISP-UHFFFAOYSA-N 1-(2-methylprop-2-enoyloxy)butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(CCC)OC(=O)C(C)=C HSOOIVBINKDISP-UHFFFAOYSA-N 0.000 description 1
- LTHJXDSHSVNJKG-UHFFFAOYSA-N 2-[2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOCCOC(=O)C(C)=C LTHJXDSHSVNJKG-UHFFFAOYSA-N 0.000 description 1
- HAUVRGZOEXGUJS-UHFFFAOYSA-N 2-methyl-4-(oxiran-2-yl)but-2-enoic acid Chemical compound OC(=O)C(C)=CCC1CO1 HAUVRGZOEXGUJS-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- AMFGWXWBFGVCKG-UHFFFAOYSA-N Panavia opaque Chemical compound C1=CC(OCC(O)COC(=O)C(=C)C)=CC=C1C(C)(C)C1=CC=C(OCC(O)COC(=O)C(C)=C)C=C1 AMFGWXWBFGVCKG-UHFFFAOYSA-N 0.000 description 1
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229960002130 benzoin Drugs 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- ISAOCJYIOMOJEB-UHFFFAOYSA-N desyl alcohol Natural products C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Landscapes
- Dental Prosthetics (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、人工歯冠に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to artificial dental crowns.
（従来の技術）
天然歯が虫歯、事故等で欠損したとき、これに代って人
工歯冠を取り付ける治療法が実用化されている。本明細
書で言う「人工歯冠」とは、欠損した天然歯に被せる歯
冠にとどまらず、天然歯根（支台）又は人工歯根の上に
取付ける歯冠、並びに義歯において床に植え付ける人工
歯を含めた広い意味である。(Prior Art) When a natural tooth is lost due to caries, an accident, etc., a treatment method has been put into practical use in which an artificial tooth crown is attached in place of the tooth. The term "artificial tooth crown" as used herein refers not only to a tooth crown that is placed over a missing natural tooth, but also to a tooth crown that is attached to a natural tooth root (abutment) or an artificial tooth root, and an artificial tooth that is implanted into the floor of a denture. It has a broad meaning that includes
最近、人工歯冠として樹脂製歯冠が脚光を浴びている。Recently, resin dental crowns have been in the spotlight as artificial dental crowns.
これは、樹脂製歯冠は■成形、製造が容易で、■任意に
着色できることから天然歯と同じ色調を出せること、■
形状の機槻的修正が容易であることなどの理由による。This is because resin tooth crowns are easy to mold and manufacture, and can be colored as desired to produce the same color tone as natural teeth.
This is because the shape can be easily modified mechanically.
当初提案された樹脂の種類は、アクリル系重合体である
０例えば米国特許第３，０６６、１１２号、第３．１７
９，６２３号、第３．１９４，７８４号、第３゜７５１
．３９９号、及び第３，９２６．９０６号に開示された
ものがそうである。更に詳しく言えば、ビスフェノール
Ａとグリシジルメタクリル酸との縮合生産物である、２
，２°−ビス（４−（３−メタクリルオキシ−２−ヒド
ロキシプロポキシ）−フェニル〕−プロパン（以後”Ｂ
Ｉ Ｓ−ＣＭＡ″と略記）が有用なモノマーであった
。The types of resins originally proposed were acrylic polymers, e.g., U.S. Pat.
No. 9,623, No. 3.194,784, No. 3゜751
．． No. 399, and No. 3,926.906. More specifically, 2 is a condensation product of bisphenol A and glycidyl methacrylic acid.
, 2°-bis(4-(3-methacryloxy-2-hydroxypropoxy)-phenyl)-propane (hereinafter referred to as "B"
IS-CMA'') was a useful monomer.
モノマーは液状であり、適当な重合開始剤例えば過酸化
物を添加するか又は可視若しくは紫外線を照射すると重
合が始まり、硬い重合硬化物（樹脂）を生成する。この
場合、Ｂ Ｉ Ｓ−ＧＭＡ単独で重合させる外に、他の
低粘性液状モノマー例えばメチルメタクリレート、エチ
ルメタクリレート、メチルアクリレート、ブチルアクリ
レート、エチレングリコールジメタクリレート、ジエチ
レングリコールジメタクリレート、トリエチレングリコ
ールジメタクリレート及びテトラエチレングリコールジ
メタクリレートのような他のメタクリル酸系モノマー、
あるいはトリメチロールプロピルトリメタクリレート、
１．６−ヘキサンシオールジメタクリレート、１，３−
ブタンジオールジメタクリレートで希釈して共重合させ
てもよい、そのほか、不飽和ウレタン系のモノマーも歯
冠用樹脂の材料として提案されている。The monomer is in a liquid state, and upon addition of a suitable polymerization initiator such as peroxide or irradiation with visible or ultraviolet light, polymerization begins to produce a hard polymerized cured product (resin). In this case, in addition to polymerizing BIS-GMA alone, other low-viscosity liquid monomers such as methyl methacrylate, ethyl methacrylate, methyl acrylate, butyl acrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, and tetraethylene glycol dimethacrylate may be used. other methacrylic monomers, such as ethylene glycol dimethacrylate,
or trimethylolpropyl trimethacrylate,
1,6-hexanethiol dimethacrylate, 1,3-
It may be diluted with butanediol dimethacrylate and copolymerized. In addition, unsaturated urethane monomers have also been proposed as materials for dental crown resins.
ところで、アクリル系重合体が最初に開発されたときそ
れらは無充填で歯冠目的に使用された。By the way, when acrylic polymers were first developed they were used unfilled for dental crown purposes.
しかしながら、アクリル系重合体は歯質構造の熱膨張係
数と比較して高い熱膨張係数を示し、これらの充填しな
い物質は満足し得るものでないことが判明した。熱膨張
における不釣合は重合の際の高度の収縮とあいまって、
縁辺部の適応性の乏しさを招き、二次的な崩壊につなが
った。その上、これらの充填していないアクリル系重合
体は、摩耗する性質があり、全体として物理的、機械的
及び光学性質は極めて貧弱であった。それ故、樹脂中に
粉末の充填材を含ませた人工歯冠が開発された。充填材
は一般にシリカ、シリケートガラス、又は石英を基材と
する無機充填材である。However, acrylic polymers exhibit a high coefficient of thermal expansion compared to that of the tooth structure, and these non-filling materials have been found to be unsatisfactory. The imbalance in thermal expansion, combined with the high degree of contraction during polymerization,
This led to poor adaptation of the margins, leading to secondary collapse. Moreover, these unfilled acrylic polymers were prone to abrasion and had very poor overall physical, mechanical and optical properties. Therefore, artificial dental crowns containing powdered filling material in resin have been developed. The filler is generally an inorganic filler based on silica, silicate glass, or quartz.
（発明が解決しようとする問題点）
しかしながら、それでも樹脂製歯冠は、耐摩耗性が十分
ではなく、通常の使用で早い場合には約半年で交換しな
ければならないという第１の問題点があった。(Problems to be Solved by the Invention) However, the first problem with resin dental crowns is that they do not have sufficient wear resistance and must be replaced after about six months of normal use. there were.
第２の問題点は、樹脂製歯冠は吸水性があり、その結果
、膨潤して形状が変化したり、悪臭を放ったり、機械的
耐久性が低下したりするという点である。The second problem is that resin dental crowns absorb water, which causes them to swell and change shape, emit bad odors, and have reduced mechanical durability.
従って、本発明の目的は、耐摩耗性が高く、しかも吸水
性のない樹脂製歯冠を徒供することにある。Therefore, an object of the present invention is to provide a dental crown made of resin that has high wear resistance and does not absorb water.
−（問題点を解決するための手段）
そこで、本発明は、このような樹脂製歯冠の少なくとも
一部表面を硬質カーボン薄膜で被覆したものである。- (Means for solving the problems) Therefore, the present invention covers at least a portion of the surface of such a resin tooth crown with a hard carbon thin film.
（作用）
硬質カーボン薄膜それ自体は、既に公知のものであり、
ダイヤモンド状カーボン膜、ｌ−カーボン膜、低圧気相
合成ダイヤモンド膜、硬質絶縁性炭素質薄膜、アモルフ
ァス硬質カーボン薄膜などとも呼ばれる透明で硬い膜で
あり、１．８〜２．４の屈折率を示す。(Function) The hard carbon thin film itself is already known,
It is a transparent and hard film that is also called a diamond-like carbon film, l-carbon film, low-pressure vapor phase synthetic diamond film, hard insulating carbonaceous thin film, amorphous hard carbon thin film, etc., and exhibits a refractive index of 1.8 to 2.4. .
硬質カーボン薄膜を合成又は形成又は製造するには、原
料として炭化水素ガス例えばメタン、エタン、ブタンや
アルコール例えばメチルアルコール、エチルアルコール
を用い、イオンビーム蒸着法やプラズマＣＶＤ法などを
用いる。To synthesize, form, or manufacture a hard carbon thin film, a hydrocarbon gas such as methane, ethane, or butane, or an alcohol such as methyl alcohol or ethyl alcohol is used as a raw material, and an ion beam evaporation method, a plasma CVD method, or the like is used.
この硬質カーボン薄膜の膜厚は、一般に０．１〜０．５
μｍもあれば十分である。The thickness of this hard carbon thin film is generally 0.1 to 0.5
μm is also sufficient.
以下、実施例により本発明を具体的に説明するが、本発
明はこれに限定されるものではない。EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited thereto.
（実施例）
（＋）２．２−ビス（４−（２−ヒドロキシル３−メタ
クリロキシフェニル）〕プロパン７０ｇ、トリエチレン
グリコールジメタクリレート３０ｇ、ベンジルジメチル
ケタール（光重合開始剤）０．５ｇ１ベンゾインイソブ
チルエーテル（光重合開始剤）０．５ｇにＴ−メタクリ
ロキシプロピルトリメトキシシラン３ｇで表面処理した
微粉末シリカ１００ｇをロールで室温下に混練し、組成
物（ペースト）を調製した。(Example) (+)2.2-bis(4-(2-hydroxyl 3-methacryloxyphenyl))propane 70 g, triethylene glycol dimethacrylate 30 g, benzyl dimethyl ketal (photopolymerization initiator) 0.5 g 1 benzoin isobutyl A composition (paste) was prepared by kneading 0.5 g of ether (photopolymerization initiator) and 100 g of finely powdered silica whose surface had been treated with 3 g of T-methacryloxypropyltrimethoxysilane at room temperature using a roll.
別途、天然歯と同一形状のキャビティーを有する鋳型（
石こう製）を作っておき、上記組成物をキャビティーに
流し込み、上から紫外線を照射して硬化させた。Separately, a mold (
The above composition was poured into the cavity and cured by irradiating ultraviolet rays from above.
鋳型を壊して硬化物を取出し、底面の中心付近に下から
上にドリルで非貫通孔（３）をあけて、樹脂製歯冠（１
）製作した。この非貫通孔（３）は、歯冠（１）と支台
歯とを連結するボストコアを嵌合させるためのものであ
る。Break the mold, take out the cured product, drill a non-through hole (3) near the center of the bottom from bottom to top, and insert the resin tooth crown (1).
) produced. This non-through hole (3) is for fitting a post core that connects the crown (1) and the abutment tooth.
（２）次に前記樹脂製歯冠（１）を、絶縁基板−（４）
に載せた上で、第２図に示すプラズマＣＶＤ装！内にセ
ットした。(2) Next, the resin tooth crown (1) is placed on the insulating substrate (4).
Place it on the plasma CVD equipment shown in Figure 2! I set it inside.
本装置において４１は水冷されている電極、４２はＲＦ
ｌｌｌ［，４３は成膜用ガス吹出口、４４はガス量コン
トロールバルブ、４５は排気系バルブ、４６は排気ポン
プである。基板４をセットした後４３よりメタンガスを
導入して真空室内の圧力をＱ、ｌ ｔｏｒｒ、にし、Ｒ
Ｆ電源を起動し、約２００Ｗの電力を投入して、プラズ
マを発生させた。このとき歯冠（１）の表面上に硬質カ
ーボン薄膜（２）が約５００人／ｓｉｎ、の速度で堆積
した。In this device, 41 is a water-cooled electrode, and 42 is an RF
llll[, 43 is a film-forming gas outlet, 44 is a gas amount control valve, 45 is an exhaust system valve, and 46 is an exhaust pump. After setting the substrate 4, methane gas is introduced from 43 to make the pressure in the vacuum chamber Q, l torr, and R
The F power supply was started and approximately 200 W of power was applied to generate plasma. At this time, a hard carbon thin film (2) was deposited on the surface of the tooth crown (1) at a rate of about 500 people/sin.
このようにして膜厚約３０００人の硬質カーボン薄膜（
２）を被覆してなる人工歯冠（第１図参照）が得られた
。In this way, a hard carbon thin film with a thickness of about 3,000 people (
An artificial tooth crown (see Fig. 1) coated with 2) was obtained.
（発明の効果）
本発明によれば、耐摩耗性が向上して耐久寿命が大幅に
延び、また吸水性が大幅に低下し、しかも樹脂製歯冠か
らの有害物質例えば未反応モノマー、重合開始剤、有機
溶剤などの口腔中への滲出がなくなって安全性が向上し
、虫歯に侵される恐れもない。(Effects of the Invention) According to the present invention, the wear resistance is improved, the durability life is significantly extended, and the water absorption is significantly reduced, and harmful substances such as unreacted monomers and polymerization start from the resin tooth crown. Safety is improved by eliminating exudation of agents, organic solvents, etc. into the oral cavity, and there is no risk of tooth decay.
従って、本発明の人工歯冠は、個々の天然歯の代替及び
総義歯の人工歯（歯冠）として極めて有用である。Therefore, the artificial tooth crown of the present invention is extremely useful as a replacement for individual natural teeth and as an artificial tooth (crown) for a complete denture.
第１図は、本発明の実施例にかかる人工歯冠の概略縦断
面図である。
第２図は、硬質カーボン薄膜を被覆するためのプラズマ
ＣＶＤ装置の概念図である。
〔主要部分の符号の説明〕
ｌ・・・・・・・・・樹脂製歯冠
２・・・・・・・・・硬質カーボン薄膜３・・・・・・
・・・非貫通孔FIG. 1 is a schematic longitudinal sectional view of an artificial tooth crown according to an embodiment of the present invention. FIG. 2 is a conceptual diagram of a plasma CVD apparatus for coating a hard carbon thin film. [Explanation of symbols of main parts] l...Resin crown 2...Hard carbon thin film 3...
...Non-through hole
Claims (1)
らなることを特徴とする人工歯冠。An artificial tooth crown comprising a resin tooth crown and a hard carbon thin film covering its surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085615A JPH01256949A (en) | 1988-04-07 | 1988-04-07 | Artificial crown of tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085615A JPH01256949A (en) | 1988-04-07 | 1988-04-07 | Artificial crown of tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01256949A true JPH01256949A (en) | 1989-10-13 |
Family
ID=13863749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63085615A Pending JPH01256949A (en) | 1988-04-07 | 1988-04-07 | Artificial crown of tooth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01256949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993001760A1 (en) * | 1991-07-18 | 1993-02-04 | Minnesota Mining And Manufacturing Company | Coated dental article |
| US8651867B2 (en) | 2001-04-17 | 2014-02-18 | Uri-Dent Ltd. | Dental crowns |
-
1988
- 1988-04-07 JP JP63085615A patent/JPH01256949A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993001760A1 (en) * | 1991-07-18 | 1993-02-04 | Minnesota Mining And Manufacturing Company | Coated dental article |
| US5288230A (en) * | 1991-07-18 | 1994-02-22 | Minnesota Mining And Manufacturing Company | Coated orthodontic archwire |
| US8651867B2 (en) | 2001-04-17 | 2014-02-18 | Uri-Dent Ltd. | Dental crowns |
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