JP4510462B2 - 多結晶透光性アルミナ系セラミック材料 - Google Patents

多結晶透光性アルミナ系セラミック材料 Download PDF

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JP4510462B2
JP4510462B2 JP2003557428A JP2003557428A JP4510462B2 JP 4510462 B2 JP4510462 B2 JP 4510462B2 JP 2003557428 A JP2003557428 A JP 2003557428A JP 2003557428 A JP2003557428 A JP 2003557428A JP 4510462 B2 JP4510462 B2 JP 4510462B2
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aluminum oxide
ceramic material
mill blank
less
dental
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Japanese (ja)
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JP2005514305A (ja
JP2005514305A5 (enExample
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カストロ，ダレン，ティー．
ルシン，リチャード，ピー．
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3M Innovative Properties Co
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3M Innovative Properties Co
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Families Citing this family (157)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7507268B2 (en) * 2001-08-02 2009-03-24 3M Innovative Properties Company Al2O3-Y2O3-ZrO2/HfO2 materials, and methods of making and using the same
CN100453486C (zh) * 2001-08-02 2009-01-21 3M创新有限公司 磨粒及其制备和使用方法
US7625509B2 (en) * 2001-08-02 2009-12-01 3M Innovative Properties Company Method of making ceramic articles
BR0211576A (pt) 2001-08-02 2004-06-29 3M Innovative Properties Co Método para fabricar um artigo a partir de vidro
US7563294B2 (en) * 2001-08-02 2009-07-21 3M Innovative Properties Company Abrasive particles and methods of making and using the same
BR0211577A (pt) * 2001-08-02 2004-07-13 3M Innovative Properties Co Vidro, métodos para fabricar um artigo que compreende vidro, um vidro-cerâmica, um artigo de vidro-cerâmica e partìculas abrasivas, vidro-cerâmica, partìcula abrasiva, pluralidade de partìculas abrasivas, e, artigo abrasivo
WO2004007397A1 (en) * 2002-07-10 2004-01-22 Koninklijke Philips Electronics N.V. Transparent polycrystalline aluminium oxide
US8056370B2 (en) * 2002-08-02 2011-11-15 3M Innovative Properties Company Method of making amorphous and ceramics via melt spinning
US6984261B2 (en) * 2003-02-05 2006-01-10 3M Innovative Properties Company Use of ceramics in dental and orthodontic applications
US20040148868A1 (en) * 2003-02-05 2004-08-05 3M Innovative Properties Company Methods of making ceramics
US7604759B2 (en) * 2003-04-04 2009-10-20 Xawex Ag Process for producing dental prostheses
US20040214141A1 (en) * 2003-04-22 2004-10-28 Neuber James Richard Dental crowns
US7292766B2 (en) * 2003-04-28 2007-11-06 3M Innovative Properties Company Use of glasses containing rare earth oxide, alumina, and zirconia and dopant in optical waveguides
US20050164045A1 (en) 2004-01-27 2005-07-28 Ivoclar Vivadent Ag Method for the production of an oxide ceramic shaped part and a part produced by such method
US8133051B2 (en) 2004-08-27 2012-03-13 Tosoh Corporation Orthodontic bracket and process for producing the same
JP5168766B2 (ja) * 2004-08-27 2013-03-27 東ソー株式会社 歯列矯正ブラケット及びその製造方法
JP4496050B2 (ja) * 2004-09-21 2010-07-07 株式会社アドバンス 歯科補綴物加工用ブロックの製造方法
SE530196C2 (sv) 2004-09-30 2008-03-25 Nobel Biocare Ab Förfarande och anordning för att åstadkomma färgsättning eller nyansering av protetik samt sådan protetik
EP1805119B1 (en) * 2004-10-01 2015-07-01 Ceranova Corporation Polycrystalline alumina articles and methods of manufacture
US20060166159A1 (en) 2005-01-25 2006-07-27 Norbert Abels Laser shaping of green metal body used in manufacturing an orthodontic bracket
US20060163774A1 (en) * 2005-01-25 2006-07-27 Norbert Abels Methods for shaping green bodies and articles made by such methods
US20060211568A1 (en) 2005-03-16 2006-09-21 Osram Sylvania Inc. High Total Transmittance Alumina Discharge Vessels Having Submicron Grain Size
JP2006273679A (ja) 2005-03-30 2006-10-12 Sumitomo Electric Ind Ltd スピネル焼結体、光透過窓および光透過レンズ
EP1709939A1 (de) * 2005-04-08 2006-10-11 Cendres & Metaux SA Extrakoronales Geschiebe sowie Verfahren zum Herstellen desselben
US8814567B2 (en) * 2005-05-26 2014-08-26 Zimmer Dental, Inc. Dental implant prosthetic device with improved osseointegration and esthetic features
EP1909685A2 (en) * 2005-05-26 2008-04-16 Zimmer Dental Inc. Prosthetic dental device
FR2886289B1 (fr) 2005-05-26 2008-05-09 Saint Gobain Ct Recherches Produit d'alumine frittee transparent au rayonnement infrarouge
MY137125A (en) 2005-07-18 2008-12-31 Adnan Bozdemir Dental prosthesis
AU2006284874B2 (en) 2005-08-30 2011-11-17 Zimmer Dental, Inc. Dental implant with improved osseointegration features
US8562346B2 (en) 2005-08-30 2013-10-22 Zimmer Dental, Inc. Dental implant for a jaw with reduced bone volume and improved osseointegration features
US7413597B2 (en) * 2005-11-03 2008-08-19 Elaine Lewis Imaging powder for CAD/CAM device
DE102005059099A1 (de) * 2005-12-08 2007-06-14 Ceramtec Ag Innovative Ceramic Engineering Feinkristalline Al2O3-Keramik
FR2895399B1 (fr) * 2005-12-22 2008-05-09 Saint Gobain Ct Recherches Produit d'alumine frittee transparent au rayonnement infrarouge et dans le domaine du visible
US20070154713A1 (en) * 2005-12-30 2007-07-05 3M Innovative Properties Company Ceramic cutting tools and cutting tool inserts, and methods of making the same
US7780446B2 (en) * 2006-02-24 2010-08-24 Zimmer Dental, Inc. Ceramic/metallic dental abutment
JP5173242B2 (ja) * 2006-05-10 2013-04-03 株式会社松風 顎歯模型用齲蝕付き歯牙
JP5173243B2 (ja) * 2006-05-10 2013-04-03 株式会社松風 Ｘ線造影性を有する顎歯模型用歯牙
US8173562B2 (en) * 2006-05-23 2012-05-08 Ivoclar Vivadent Ag Shaded zirconia ceramics
JP5236204B2 (ja) * 2006-05-23 2013-07-17 株式会社松風 顎歯模型用の歯牙及びその製造方法
EP2359771B1 (de) * 2006-05-23 2016-05-11 Ivoclar Vivadent AG Verfahren zur Herstellung von gefärbten Rohlingen und dentalen Formteilen
JP5943537B2 (ja) * 2006-08-25 2016-07-05 セラムテック ゲゼルシャフト ミット ベシュレンクテル ハフツングＣｅｒａｍＴｅｃ ＧｍｂＨ 特に歯科医学的に適用するための着色セラミックス焼結体の製造法
ATE507797T1 (de) * 2006-09-13 2011-05-15 Ivoclar Vivadent Ag Mehrfarbiger formkörper
US8940402B2 (en) * 2006-12-28 2015-01-27 Russell A. Giordano Multicolor dental blanks and related methods
WO2008083282A2 (en) 2006-12-29 2008-07-10 3M Innovative Properties Company Zirconia body and methods
JP4910750B2 (ja) * 2007-02-14 2012-04-04 東ソー株式会社 透光性アルミナ焼結体及びその製造方法
US7678725B2 (en) 2007-05-14 2010-03-16 General Electric Company Translucent polycrystalline alumina ceramic
US8002823B2 (en) * 2007-07-11 2011-08-23 Boston Scientific Scimed, Inc. Endoprosthesis coating
JP5230262B2 (ja) * 2007-08-01 2013-07-10 株式会社松風 樹脂または低融点ガラス含浸エナメル部分を有する歯牙模型用の歯牙の製造方法
US9149345B2 (en) * 2007-08-30 2015-10-06 Zimmer Dental, Inc. Multiple root implant
US8040061B2 (en) * 2007-09-07 2011-10-18 Osram Sylvania Inc. Ceramic discharge vessel having an opaque zone and method of making same
JP4983545B2 (ja) * 2007-10-30 2012-07-25 東ソー株式会社 高靭性透光性アルミナ焼結体及びその製造方法並びに用途
US20090115084A1 (en) * 2007-11-05 2009-05-07 James R. Glidewell Dental Ceramics, Inc. Slip-casting method of fabricating zirconia blanks for milling into dental appliances
DE102007059091A1 (de) 2007-12-07 2009-06-10 ETEC Gesellschaft für technische Keramik mbH Verfahren zur Herstellung einer polykristallinen transparenten Keramik
US8562348B2 (en) * 2008-07-02 2013-10-22 Zimmer Dental, Inc. Modular implant with secured porous portion
US8231387B2 (en) 2008-07-02 2012-07-31 Zimmer, Inc. Porous implant with non-porous threads
US8899982B2 (en) 2008-07-02 2014-12-02 Zimmer Dental, Inc. Implant with structure for securing a porous portion
US9095396B2 (en) 2008-07-02 2015-08-04 Zimmer Dental, Inc. Porous implant with non-porous threads
US8632889B2 (en) * 2008-07-21 2014-01-21 Vita Zahnfabrik H. Rauter Gmbh & Co. Kg Molded member made of form-stabilized material and method for the manufacture thereof
TWI388401B (en) * 2008-07-30 2013-03-11 Polycrystalline aluminum-containing grits and associated methods
DE102008064654A1 (de) * 2008-08-05 2010-04-15 Endress + Hauser Gmbh + Co. Kg Verfahren zur Herstellung eines elastischen Körpers aus Al2O3- Keramik
US8485042B2 (en) 2008-08-05 2013-07-16 Endress + Hauser Gmbh + Co. Kg Method for manufacturing an elastic body of Al2O3 ceramic, measuring membrane for a pressure sensor and pressure sensor with such a membrane
BRPI0916243B8 (pt) 2008-08-13 2021-06-22 Ormco Corp suportes ortodônticos
US20100114314A1 (en) 2008-11-06 2010-05-06 Matthew Lomicka Expandable bone implant
AU2009238317B2 (en) 2008-11-14 2011-10-06 Ormco Corporation Surface treated polycrystalline ceramic orthodontic bracket and method of making same
DE102008063926A1 (de) 2008-12-18 2010-06-24 Ceramtec-Etec Gmbh Verfahren zur Herstellung einer transparenten Keramik
DE112010002044A5 (de) * 2009-05-20 2012-09-13 Pbd, Patent & Business Development Ag Polykristalliner keramischer orthodontischer Bauteil
US8867800B2 (en) 2009-05-27 2014-10-21 James R. Glidewell Dental Ceramics, Inc. Method of designing and fabricating patient-specific restorations from intra-oral scanning of a digital impression
US9707058B2 (en) 2009-07-10 2017-07-18 Zimmer Dental, Inc. Patient-specific implants with improved osseointegration
US8622377B2 (en) * 2009-08-20 2014-01-07 Ivoclar Vivadent Ag Holder for CAD/CAM blanks
US8181134B2 (en) * 2009-10-16 2012-05-15 International Business Machines Corporation Techniques for performing conditional sequential equivalence checking of an integrated circuit logic design
US8602782B2 (en) 2009-11-24 2013-12-10 Zimmer Dental, Inc. Porous implant device with improved core
EP2549945A4 (en) * 2010-03-24 2013-11-20 Chan Q Wang METHOD FOR RESTORING A DENTAL IMPLANT
EP2387984A1 (en) * 2010-05-21 2011-11-23 3M Innovative Properties Company Dental ceramic article, process for production and use thereof
AT12407U1 (de) 2010-07-02 2012-05-15 Stephan Lampl Zahnfrontverblendungskörper
JP2013538616A (ja) 2010-08-30 2013-10-17 スリーエム イノベイティブ プロパティズ カンパニー コーティングされた歯科用物品及び関係する製造方法
DE102011075808B4 (de) * 2010-09-10 2017-06-29 Biolitec Ag Implantat zur Anwendung bei einer photo-dynamischen Behandlung sowie Verfahren zur Herstellung des Implantats
CN102093038B (zh) * 2010-12-06 2013-08-21 清华大学 一种透明氧化铝陶瓷的制造方法及其应用
KR101607883B1 (ko) 2010-12-31 2016-03-31 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 특정 모양의 연마 입자 및 그러한 입자의 형성 방법
CN102220642A (zh) * 2011-04-30 2011-10-19 常州天合光能有限公司 提高多晶硅光伏电池转换效率的方法
US8986409B2 (en) 2011-06-30 2015-03-24 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles including abrasive particles of silicon nitride
CN103764349B (zh) 2011-06-30 2017-06-09 圣戈本陶瓷及塑料股份有限公司 液相烧结碳化硅研磨颗粒
US9517546B2 (en) 2011-09-26 2016-12-13 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles including abrasive particulate materials, coated abrasives using the abrasive particulate materials and methods of forming
WO2013054219A1 (en) * 2011-10-11 2013-04-18 Koninklijke Philips Electronics N.V. Diffusive ceramic envelope
EP2776378A1 (de) 2011-11-10 2014-09-17 CeramTec-Etec GmbH Verfahren zur herstellung transparenter keramikgegenstände mittels wirbelschichtgranulation
KR101736755B1 (ko) 2011-12-30 2017-05-17 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 복합 형상화 연마입자들 및 이의 형성방법
KR20140106737A (ko) 2011-12-30 2014-09-03 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 형상화 연마입자들 형성
CN104125875B (zh) 2011-12-30 2018-08-21 圣戈本陶瓷及塑料股份有限公司 成形磨粒及其形成方法
US8840696B2 (en) 2012-01-10 2014-09-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having particular shapes and methods of forming such particles
AU2013207946B2 (en) 2012-01-10 2016-07-07 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US8936848B2 (en) * 2012-02-23 2015-01-20 B&D Dental Corp Non-pre-colored multi-layer zirconia dental blank that has a gradual change in translucency through a thickness after sintering
JP2013203570A (ja) * 2012-03-27 2013-10-07 Seiko Epson Corp 透光性アルミナおよび透光性アルミナの製造方法
US9242346B2 (en) 2012-03-30 2016-01-26 Saint-Gobain Abrasives, Inc. Abrasive products having fibrillated fibers
KR20150020199A (ko) 2012-05-23 2015-02-25 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 형상화 연마입자들 및 이의 형성방법
US9434651B2 (en) 2012-05-26 2016-09-06 James R. Glidewell Dental Ceramics, Inc. Method of fabricating high light transmission zirconia blanks for milling into natural appearance dental appliances
US9827104B2 (en) 2012-06-27 2017-11-28 Laboratoires Bodycad Inc. Method of machining a workpiece into a desired patient specific object
IN2015DN00343A (enExample) 2012-06-29 2015-06-12 Saint Gobain Ceramics
KR101736085B1 (ko) 2012-10-15 2017-05-16 생-고뱅 어브레이시브즈, 인코포레이티드 특정한 형태들을 가진 연마 입자들 및 이러한 입자들을 형성하는 방법들
JP2016503731A (ja) 2012-12-31 2016-02-08 サン−ゴバン セラミックス アンド プラスティクス，インコーポレイティド 粒子材料およびその形成方法
JP6251482B2 (ja) * 2013-02-22 2017-12-20 株式会社トクヤマデンタル 歯科ｃａｄ／ｃａｍ用レジンブロック
AT513857B1 (de) 2013-02-27 2014-08-15 Lampl Stephan Dentale Teilprothese
CA2907372C (en) 2013-03-29 2017-12-12 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
TW201502263A (zh) 2013-06-28 2015-01-16 Saint Gobain Ceramics 包含成形研磨粒子之研磨物品
JP2016538149A (ja) 2013-09-30 2016-12-08 サン−ゴバン セラミックス アンド プラスティクス，インコーポレイティド 形状化研磨粒子及び形状化研磨粒子を形成する方法
BR112016007358A2 (pt) 2013-10-04 2017-08-01 3M Innovative Properties Co bloco bruto para usinagem de próteses dentárias
CN105074870B (zh) * 2013-12-25 2016-12-07 日本碍子株式会社 操作基板、半导体用复合基板、半导体电路基板及其制造方法
CN106029301B (zh) 2013-12-31 2018-09-18 圣戈班磨料磨具有限公司 包括成形磨粒的研磨制品
US9771507B2 (en) 2014-01-31 2017-09-26 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
CN106457521A (zh) 2014-04-14 2017-02-22 圣戈本陶瓷及塑料股份有限公司 包括成形磨粒的研磨制品
WO2015160854A1 (en) 2014-04-14 2015-10-22 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
WO2015184355A1 (en) 2014-05-30 2015-12-03 Saint-Gobain Abrasives, Inc. Method of using an abrasive article including shaped abrasive particles
WO2016011495A1 (en) * 2014-07-24 2016-01-28 Esthetic Dental Laboratories Pty Ltd "dental prosthesis and moulding method"
AU2015203488B1 (en) * 2014-07-24 2015-09-03 Esthetic Dental Laboratories Pty Ltd Moulding of a prosthetic tooth element comprising ceramic, such as zirconia, with a roughened surface
EP3174516B1 (en) * 2014-07-31 2021-02-24 3M Innovative Properties Company Kit of parts containing dental mill blank and colouring solution
CN104127251A (zh) * 2014-08-13 2014-11-05 马鞍山市休普技术陶瓷有限责任公司 一种陶瓷托槽及其制备方法
CN106007383B (zh) * 2014-11-10 2018-11-02 泉州方寸新材料科技有限公司 一种用于种植牙的玻璃陶瓷的制备方法
US9287106B1 (en) 2014-11-10 2016-03-15 Corning Incorporated Translucent alumina filaments and tape cast methods for making
CN107001148B (zh) 2014-11-28 2020-03-13 日本碍子株式会社 氧化铝烧结体及光学元件用基底基板
US9914864B2 (en) 2014-12-23 2018-03-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US9707529B2 (en) 2014-12-23 2017-07-18 Saint-Gobain Ceramics & Plastics, Inc. Composite shaped abrasive particles and method of forming same
US9676981B2 (en) 2014-12-24 2017-06-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle fractions and method of forming same
WO2016104724A1 (ja) * 2014-12-26 2016-06-30 クラレノリタケデンタル株式会社 ジルコニア組成物、ジルコニア仮焼体及びジルコニア焼結体、並びに歯科用製品
CN116967949A (zh) 2015-03-31 2023-10-31 圣戈班磨料磨具有限公司 固定磨料制品和其形成方法
TWI634200B (zh) 2015-03-31 2018-09-01 聖高拜磨料有限公司 固定磨料物品及其形成方法
CA2988012C (en) 2015-06-11 2021-06-29 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
DE102015121858B9 (de) * 2015-12-15 2025-04-10 Kulzer Gmbh Verfahren zur Herstellung grosser polymerisierter dentaler Materialblöcke
WO2017179518A1 (ja) * 2016-04-12 2017-10-19 株式会社ナントー インプラント、フィクスチャー、アバットメント、インプラントクラウン、インプラント用ドライバ
PL3455321T3 (pl) 2016-05-10 2022-12-12 Saint-Gobain Ceramics&Plastics, Inc. Sposób formowania cząstek ściernych
CN109462993A (zh) 2016-05-10 2019-03-12 圣戈本陶瓷及塑料股份有限公司 磨料颗粒及其形成方法
DE102016109449A1 (de) * 2016-05-23 2017-11-23 Bredent Gmbh & Co. Kg Keramisches Halbzeug zur Herstellung von Zahnersatz und Verfahren zur Herstellung von Zahnersatz mittels eines keramischen Halbzeugs
CN106109037A (zh) * 2016-06-08 2016-11-16 佛山市德艺会牙科技术有限公司 一种全氧化锆仿真义齿制造方法
CN106073920A (zh) * 2016-06-08 2016-11-09 佛山市德艺会牙科技术有限公司 一种全氧化锆高仿真义齿
US11806202B2 (en) 2016-08-17 2023-11-07 Shofu Inc. Mill blank for dental CAD/CAM with cutout portion for positioning
US10905532B2 (en) 2016-08-26 2021-02-02 Shofu Inc. Mill blank for dental CAD/CAM with resin portion contacted with CAM device
EP3519134B1 (en) 2016-09-29 2024-01-17 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
CA3039666C (en) 2016-10-28 2022-08-23 Ppg Industries Ohio, Inc. Coatings for increasing near-infrared detection distances
US10759024B2 (en) 2017-01-31 2020-09-01 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10563105B2 (en) 2017-01-31 2020-02-18 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10865148B2 (en) 2017-06-21 2020-12-15 Saint-Gobain Ceramics & Plastics, Inc. Particulate materials and methods of forming same
CN111093559B (zh) * 2017-09-26 2022-07-12 可乐丽则武齿科株式会社 牙科用研磨坯料和其制造方法
JP6292704B1 (ja) * 2017-10-17 2018-03-14 株式会社松風 樹脂部分でｃａｍの保持部とを繋ぐ歯科用ｃａｄｃａｍ用被切削体とそのアダプター
JP6344808B1 (ja) * 2017-10-17 2018-06-20 株式会社松風 位置決め切欠部を有する歯科用ｃａｄｃａｍ用被切削体
JP7315474B2 (ja) * 2017-12-26 2023-07-26 クラレノリタケデンタル株式会社 歯科用ミルブランクおよびその製造方法
JP6840394B2 (ja) * 2018-06-07 2021-03-10 株式会社トクヤマデンタル デモンストレーション用器具
JP7433806B2 (ja) * 2018-08-22 2024-02-20 株式会社松風 歯科切削加工用ジルコニア被切削体及びその製造方法
CA3119767A1 (en) 2018-11-13 2020-05-22 Ppg Industries Ohio, Inc. Method of detecting a concealed pattern
US11561329B2 (en) 2019-01-07 2023-01-24 Ppg Industries Ohio, Inc. Near infrared control coating, articles formed therefrom, and methods of making the same
CN114845838B (zh) 2019-12-27 2024-10-25 圣戈本陶瓷及塑料股份有限公司 磨料制品及其形成方法
KR102765343B1 (ko) 2019-12-27 2025-02-13 세인트-고바인 세라믹스 앤드 플라스틱스, 인크. 연마 물품 및 이의 형성 방법
KR102877276B1 (ko) 2019-12-27 2025-10-28 세인트-고바인 세라믹스 앤드 플라스틱스, 인크. 연마 물품 및 이의 형성 방법
US11731312B2 (en) 2020-01-29 2023-08-22 James R. Glidewell Dental Ceramics, Inc. Casting apparatus, cast zirconia ceramic bodies and methods for making the same
US12496173B2 (en) 2020-11-17 2025-12-16 James R. Glidewell Dental Ceramics, Inc. Method for coloring a dental prosthesis
CN113121210B (zh) * 2021-05-31 2022-11-25 深圳陶陶科技有限公司 一种纳米级氧化铝陶瓷粉体、复合陶瓷材料及其制备方法
JPWO2023127564A1 (enExample) * 2021-12-27 2023-07-06
CN118541241A (zh) 2021-12-30 2024-08-23 圣戈班磨料磨具有限公司 磨料制品及其形成方法
MX2024007593A (es) 2021-12-30 2024-08-20 Saint Gobain Abrasives Inc Artículos abrasivos y métodos de formación de los mismos.
JP2023113369A (ja) * 2022-02-03 2023-08-16 株式会社ワールドラボ 透光性アルミナセラミックス及びその製造方法
EP4438027A4 (en) 2022-12-16 2025-10-08 Kuraray Noritake Dental Inc MACHINING BODY IN ALUMINUM OXIDE FOR DENTAL USE

Family Cites Families (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926422A (en) 1959-01-06 1960-03-01 Wallshein Melvin Orthodontic brackets
US3026210A (en) 1961-01-03 1962-03-20 Gen Electric Transparent alumina and method of preparation
US3181240A (en) 1961-06-30 1965-05-04 Zahnfabrik Wienand Sohne & Com Ceramic artificial teeth and method of their manufacture
GB1105111A (en) 1963-10-08 1968-03-06 Nat Res Dev Improvements in dental materials
DE1228754B (de) 1964-02-20 1966-11-17 Dr Gerhard Mueller Verfahren zur Befestigung kieferorthopaedischer bzw. orthodontischer Apparate sowie abnehmbaren Zahnersatzes mittels sogenannter >>attachments<< und Vorrichtungen hierfuer
US3423833A (en) 1967-08-15 1969-01-28 Lawrence Pearlman Adjustable orthodontic device
US3541688A (en) 1968-10-25 1970-11-24 Nat Res Dev Dental restorations
US3578744A (en) 1969-09-12 1971-05-18 Alexo Corp Method and apparatus for orthodontic treatment
USRE28889E (en) 1969-09-12 1976-07-06 Consyne Corporation Method and apparatus for orthodontic treatment
US3842503A (en) 1970-05-27 1974-10-22 Silverado Industries Method for orthodontic treatment
US3732087A (en) 1971-02-24 1973-05-08 Corning Glass Works Tetrasilicic mica glass-ceramic method
GB1428673A (en) 1972-06-02 1976-03-17 Amalgamated Dental Co Ltd Orthodontics
JPS51107683A (en) 1975-03-18 1976-09-24 Ngk Insulators Ltd Taketsushotomeiaruminahatsukokan
DE2554145A1 (de) 1975-11-28 1977-06-08 Company Inc A Verstaerkte zahnspangenauflage
SE414399B (sv) 1976-03-16 1980-07-28 Hans Scheicher Keramiskt material for anvendning inom medicinen, i synnerhet for framstellning av implantat, fremst odontologiska implantat samt sett for framstellning av materialet
US4097935A (en) 1976-07-21 1978-07-04 Sterling Drug Inc. Hydroxylapatite ceramic
US4878840B1 (en) 1978-08-03 1995-06-13 Class One Orthodontics Inc Orthodontic appliance
US4216583A (en) 1978-08-03 1980-08-12 Zulauf Inc. Orthodontic appliance
US4322206A (en) 1978-08-03 1982-03-30 Zulauf Inc. Orthodontic appliance
US4219617A (en) 1978-08-09 1980-08-26 Melvin Wallshein Ceramic orthodontic bracket
US4310306A (en) 1978-11-13 1982-01-12 Melvin Wallshein Multi-purpose orthodontic bracket
ATE15588T1 (de) 1979-07-13 1985-10-15 Corning Glass Works Kuenstliche zaehne und zahnaerztliche werkzeuge sowie deren herstellung.
US4285732A (en) 1980-03-11 1981-08-25 General Electric Company Alumina ceramic
US4575805A (en) 1980-12-24 1986-03-11 Moermann Werner H Method and apparatus for the fabrication of custom-shaped implants
US4460336A (en) 1982-07-27 1984-07-17 Smith Dennis C Orthodontic attachments
US4927361A (en) 1982-07-27 1990-05-22 Smith Dennis C Orthodontic attachments
US4544359A (en) 1984-01-13 1985-10-01 Pentron Corporation Dental restorative material
US4681538A (en) 1984-04-23 1987-07-21 Johnson & Johnson Dental Products, Company Crystalline alumina composites
US4595598A (en) 1984-04-23 1986-06-17 Johnson & Johnson Dental Products Company Crystalline alumina composites
CA1279215C (en) 1984-04-23 1991-01-22 Johnson & Johnson Dental Products Company Crystalline alumina orthodontic bracket
US4797238A (en) 1985-11-27 1989-01-10 Gte Laboratories Incorporated Rapid-sintering of alumina
CA1326382C (en) 1986-05-08 1994-01-25 John Steven Kelly Ceramic orthodontic appliance
CH672722A5 (enExample) 1986-06-24 1989-12-29 Marco Brandestini
KR910009894B1 (ko) 1987-03-26 1991-12-03 도도 기끼 가부시끼가이샤 세라믹스 제품 및 그 제조방법
US5244849A (en) 1987-05-06 1993-09-14 Coors Porcelain Company Method for producing transparent polycrystalline body with high ultraviolet transmittance
FR2627377B1 (fr) 1988-02-19 1990-07-27 Sadoun Michael Dispositif de fixation d'arc en orthodontie
AU612346B2 (en) 1988-03-02 1991-07-11 Unitek Corporation Ceramic orthodontic appliance
DE3811902A1 (de) 1988-04-09 1989-10-19 Winkelstroeter Dentaurum Verfahren zur herstellung von formkoerpern aus transparentem, polykristallinem aluminiumoxid
US5242298A (en) 1988-04-09 1993-09-07 Dentaurum J. P. Winkelstroeter Kg Shaped bodies of transparent, polycrystalline alumina
US4988293A (en) 1988-11-07 1991-01-29 Union Carbide Chemicals And Plastics Company Inc. Toughness coating for crystalline orthodontic brackets
US5217375A (en) * 1989-03-23 1993-06-08 Sandvik Ab Artificial onlay tooth crowns and inlays
JPH03168140A (ja) * 1989-11-29 1991-07-19 Tosoh Corp 歯列矯正ブラケット及びその製造方法
US5231062A (en) 1990-08-09 1993-07-27 Minnesota Mining And Manufacturing Company Transparent aluminum oxynitride-based ceramic article
US5096862A (en) * 1990-08-09 1992-03-17 Minnesota Mining And Manufacturing Company Transparent ceramic composite article comprising aluminum oxide and aluminum magnesium oxynitride
AT401227B (de) 1991-07-09 1996-07-25 Hat Entwicklungs Gmbh Zahnregulierungsvorrichtung mit einem keramischen zahnaufsatz
DE4135434A1 (de) 1991-10-26 1993-04-29 Winkelstroeter Dentaurum Orthodontisches hilfsteil
EP0567095B1 (en) 1992-04-22 1996-07-03 Sumitomo Chemical Company, Limited Translucent polycrystalline alumina and process for producing the same
US5380196A (en) 1993-05-13 1995-01-10 Minnesota Mining And Manufacturing Company Orthodontic bracket with archwire slot liner
US5358402A (en) 1993-05-13 1994-10-25 Minnesota Mining & Manufacturing Company Ceramic orthodontic bracket with archwire slot liner
US5439379A (en) 1993-11-29 1995-08-08 Minnesota Mining And Manufacturing Company Ceramic orthodontic bracket with debonding channel
US5376606A (en) 1993-12-30 1994-12-27 Korea Institute Of Science And Technology Light-transmissive polycrystalline alumina ceramics
US5587346A (en) 1995-06-16 1996-12-24 Osram Sylvania, Inc. Translucent polycrystalline alumina
JP4723055B2 (ja) * 1999-05-19 2011-07-13 日本特殊陶業株式会社 アルミナ焼結体及びその製造方法並びに焼結アルミナ部材及び発光管
CA2308933C (en) * 1999-05-19 2008-07-22 Ngk Spark Plug Co., Ltd. Translucent polycrystalline ceramic and method for making same
JP4151813B2 (ja) 1999-07-23 2008-09-17 トミー株式会社 歯列矯正用部材及びその製造方法
US20030031984A1 (en) 1999-08-26 2003-02-13 Richard P. Rusin Ceramic dental mill blanks
JP2001064075A (ja) * 1999-08-30 2001-03-13 Sumitomo Chem Co Ltd 透光性アルミナ焼結体およびその製造方法
WO2001015620A1 (en) 1999-09-02 2001-03-08 Jeneric/Pentron Incorporated Method for manufacturing dental restorations
JP2001213664A (ja) * 2000-01-28 2001-08-07 Sumitomo Chem Co Ltd アルミナ焼結体とその製造方法およびその用途
US6482284B1 (en) * 2000-08-31 2002-11-19 3M Innovative Properties Company Method of making a dental mill blank and support stub assembly
US6648638B2 (en) * 2001-12-28 2003-11-18 3M Innovative Properties Company Orthodontic appliances including polycrystalline alumina-based ceramic material, kits, and methods

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CA2470415A1 (en) 2003-07-17
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