| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Oral appliances and method | US357074 | 1994-12-15 | US5487663A | 1996-01-30 | George M. Wilson |
| The present invention relates to the method and apparatus for forming a dental crown on a prepared tooth. A dental appliance is provided in which a resinous jacket is provided, and is capable of serving both as a crown and a crown form, the jacket having relatively thinner, straight, side walls. When used as a crown, the inner surface of the jacket is coated with a bonding agent, and the jacket is then filled with a composite restorative material, after which, the jacket is fitted over the prepared tooth to be restored, to give a resultant highly effective crown, either by leaving the jacket in place, or by removing it, in which case the composite restorative material serves as the crown, standing alone. | ||||||
| 42 | Shell tooth form | US956374 | 1992-10-05 | US5332390A | 1994-07-26 | Davey G. Rosellini |
| A crown and/or a replacement tooth and a method of in situ production thereof by grinding and shaping a tooth to form a prepared tooth; filling a transparent shell tooth form with a light setting resin; disposing the filled shell tooth form onto the prepared tooth; illuminating the filled transparent shell tooth form to set the light setting resin and bond the resin to the shell tooth form; and shaping and polishing the set resin in situ to form a crown. A set of shell tooth forms is provided which are formed from a light setting resin chemically compatible with the resin used to fill the form in order that bonding occurs therebetween. This feature enables the products of a replacement tooth formed in situ without the necessity of shell tooth form removal as heretofore required. | ||||||
| 43 | Composite resin crown, replacement tooth and method | US760980 | 1991-09-17 | US5192207A | 1993-03-09 | Davey G. Rosellini |
| A crown and/or a replacement tooth and a method of in situ production thereof by grinding and shaping a tooth to form a prepared tooth; filling a transparent shell tooth form with a light setting resin; disposing the filled shell tooth form onto the prepared tooth; illuminating the filled transparent shell tooth form to set the light setting resin and bond the resin to the shell tooth form; and shaping and polishing the set resin in situ to form a crown. A set of shell tooth forms is provided which are formed from a light setting resin chemically compatible with the resin used to fill the form in order that bonding occurs therebetween. This feature enables the products of a replacement tooth formed in situ without the necessity of shell tooth form removal as heretofore required. | ||||||
| 44 | Cranial motion dental attachment | US735141 | 1985-05-17 | US4917608A | 1990-04-17 | Gerald H. Smith |
| A cranial motion dental attachment for linking the interproximal walls of adjacent molded crowns while permitting relative movement therebetween. The attachment includes a piston having an integral retainer stem which is attached to a dental structure and a cylinder attached to an adjacent dental structure adapted to receive the piston so that the piston is moveable within the cylinder permitting horizontal or lateral movement between the adjacent dental pieces. | ||||||
| 45 | Artificial tooth crown and method of producing the same | US217145 | 1988-07-01 | US4877402A | 1989-10-31 | Masaya Hirabayashi; Iwao Noda |
| The disclosure relates to an artificial tooth crown composed of glass ceramics comprising crystallized calcium phosphate forming essentially apatite which is a main inorganic component of natural bones or teeth. The disclosure also relates to a method of producing the artificial tooth crown. The artificial tooth crown has superior dimensional accuracy since it is made by precision casting. The tooth crown can be securely adhered by a dental cement such as glass ionomer. Furthermore, the physical properties of the tooth crown are very similar to those of the natural teeth, and the wear caused by the biting motion between the tooth crown and its mating tooth does not differ from that caused by the biting motion between the natural teeth. Furthermore, the method does not differ from the conventional precision casting method. | ||||||
| 46 | Uniformly fluorescing porcelain dental restorations | US907500 | 1986-09-12 | US4741699A | 1988-05-03 | Peter Kosmos |
| A porcelain veneered dental restoration in which UV fluorescing agent is present in each of the opaque, body and incisal layers at a level to provide the restoration with a uniform fluorescence matching that of natural teeth. | ||||||
| 47 | Method for bonding ceramic to noble based metals and product | US460918 | 1983-01-14 | US4434211A | 1984-02-28 | Itzhak Shoher; Aharon Whiteman |
| A method of forming a clinically unbreakable composite structure between a noble based metal and a ceramic comprising depositing a thin layer of a bonding material including finely divided particles of a noble metal halide alone or in combination with particles of a noble metal; sintering the layer at a predetermined temperature between 1775.degree. F. and 1975.degree. F. and firing a ceramic over the sintered coating. | ||||||
| 48 | Method and apparatus for dental crown removal | US379259 | 1982-05-17 | US4402671A | 1983-09-06 | Robert D. Westerman |
| A removal dental crown adapted to be secured by a layer of bonding material to a tooth. The crown has a removable key threadedly secured in a channel formed directly in the crown. The key includes a recess for receiving a tool for removal of the key thereby leaving a threaded channel in the crown. An extractor tool can then be inserted into the threaded channel for engagingly breaking the bonding layer and forcing the crown away from the tooth. | ||||||
| 49 | Implant artificial denture | US101856 | 1979-12-10 | US4318696A | 1982-03-09 | Katsumi Kasama; Toru Kasama |
| The present invention provides an implant artificial denture comprising an intra-ossal implant implanted in the jaw, an elastic material fitted over the head of the intra-ossal implant, a crown of tooth and, if required, a receiver fitted over the head of the intra-ossal implant, wherein the receiver prevents the elastic material from falling off when chewing and masticatory pressure or shock is applied thereto and the elastic material absorbs the chewing and masticatory pressure or shock applied thereto to prevent lesion of the surrounding tissue, and further provides an implant artificial denture equipped with a chewing load limit sensing device incorporated therein, which aids in preventing lesion of the surrounding tissue. | ||||||
| 50 | Method and apparatus for coating dental crowns and bridges | US877525 | 1978-02-13 | US4246086A | 1981-01-20 | Hans W. Hennicke; Joachim Weiss |
| A controlled layer of base mass is uniformly applied to a dental crown or bridge 10 of noble metal alloy by electrophoretic separation in a glass container 14 after an intermediate layer of galvanized zinc or tin is first applied in a container 13. The intermediate layer may be omitted if the crown or bridge is made of a non-noble metal alloy. The containers are provided with semi-cylindrical cathodes 15, 16 coupled to an electrical supply by jack plugs 19, 20. The crown or bridge serves as the anode and is held by tongs 21, 22 connected by cables 23, 24 to the power supply, and both the magnitudes and durations of the bath currents are adjustable. The liquid suspension of the base mass in the electrophoretic bath is maintained by a magnetic stirrer 27. | ||||||
| 51 | Dental restorative structures | US8944 | 1979-02-02 | US4231740A | 1980-11-04 | Itzhak Shoher; Aharon E. Whiteman |
| The dental restorative structures of the present invention comprise a porcelain superstructure surrounding a metal substructure composed of a framework of relatively thin metal members interconnected to form concavities within the porcelain superstructure. | ||||||
| 52 | Method of providing a living person's body with information for forensic identification | US886439 | 1978-03-14 | US4208795A | 1980-06-24 | Hans R. Muhlemann; Ernesto Steiner; Marco Brandestini |
| An identification plate of gold alloy is inserted in a small blind hole drilled into the crown of a tooth. The hole is then filled with a durable filler which hardens around the plate to embed it in a durable, heat resistant filling. The filling material can be colored so that it is readily located when identification is desired. For making the identification, the filler is dissolved away to leave the plate, which can be read by means of optical magnification.Also disclosed is an electrical device especially adapted for providing plate blanks with the desired identifying information. | ||||||
| 53 | Prefabricated full crown system | US888180 | 1978-03-20 | US4206545A | 1980-06-10 | Raymond E. Lord |
| Two preformed pieces are joined onto a natural tooth to constitute a single thickness crown offering the esthetics of a facing and the utility of a full metal cap. Splinting of a dummy tooth between two of the crown assemblies is also accomplished at chairside in conjunction with a routine office-lab procedure. | ||||||
| 54 | Temporary dental crown protector | US571256 | 1975-04-24 | US3974567A | 1976-08-17 | William V. Ridgeway |
| A temporary protector defined by a sheet of pliable paper or like material of such shape and size as to cover the masticating or occlusal surface of a dental crown. The sheet has first and second sides, with the first side being covered with a film of pressure sensitive adhesive. The film of pressure sensitive adhesive on each protector permits the latter to be removably bonded to the masticating surface of a dental crown prior to the crown being permanently secured to a prepared tooth by the use of conventional means, I.E. a crown and bridge cement, polycarboxylate cement, or the like. Each protector prevents the undulating masticating surface of the dental crown on which it is mounted from being contaminated with cement during the time it is being mounted on the prepared tooth structure. Removal of tiny particles of solidified cement from the surface of a dental crown after it is positioned on a tooth is a tedius, time-consuming operation and one that is completely avoided by use of the protector abovedescribed. The protectors prior to being used are preferably lightly bonded in longitudinal sequence on a first surface of a strip of pliable sheet material such as paper or the like, which strip is wound in the form of a roll and rotatably disposed in the interior of a transversely slotted housing. | ||||||
| 55 | Method of restoring anterior endodontically treated teeth | US14569922 | 2014-12-15 | US09707060B1 | 2017-07-18 | Jack Levi |
| Endodontically treated teeth can be restored with porcelain facial veneer restorations-layering ceramic and porcelains. The method includes the steps of providing a cement material for preventing microleakage into gutta percha and for forming a post-barrier space. A rhomboid access inlay-shaped porcelain core is provided with an anatomical post extension extending below a level of an existing crest of bone into a root canal space, the length of the post extension being less than one-half the length of a root canal. The modified post is seated into a post barrier cement to prevent the egress of moisture or bacterial microleakage to the apex of the root canal. | ||||||
| 56 | Method of creating an interim crown | US149710 | 1998-09-09 | US5951294A | 1999-09-14 | Kenneth W. Pierson |
| A method of restoring a damaged anterior tooth by creating an esthetically pleasing crown affixed thereto wherein a scaffold having an opening in the facial panel thereof, and having a cap fitted over the exterior thereof, is filled with a quantity of composite material and fitted to the tooth to be restored, which tooth had been previously prepared for receipt of said scaffold, and removing the cap once the composite material has cured, to reveal an aesthetically pleasing crown. | ||||||
| 57 | Dental prosthesis with composite support shell and coating, preimpregnated fabric part, manufacturing method and machine | US89118 | 1998-06-03 | US5947737A | 1999-09-07 | Gilles Billet; Bruno Clunet-Coste; Bernard Maneuf |
| A machine for implementation of a method for making a dental prothesis. The machine has a tight enclosure, a plate for receiving a shaping model in the enclosure, a flexible fluid-proof membrane separating the enclosure into two chambers, a device (means) for creating a lower fluid pressure in one of the two chambers, and a device (means) for cross-linking parts placed on the shaping model. | ||||||
| 58 | Technique for positioning dental crowns and inlays | US633899 | 1996-04-17 | US5851114A | 1998-12-22 | Robert L. Lee |
| Special tools and materials are provided For the fitting and placement of artificial crowns and inlays in a patient's mouth. One version of the kit comprises test ribbons, ribbon gripping forceps, crown gripping forceps, a crown placement tool, an adhesive dispenser, expendable adhesive, an adhesive dispenser stand, an inlay/veneer placement tool, and a number of plastic or metal shims. The inlay placement tool is fitted with hot-melt adhesive on its tip for fixed attachment of an inlay or veneer for placement in the mouth. The crown placement tool is adhered with hot melt adhesive to the biting surface of a posterior crown to be used as a crown placing device. The ribbon forceps is used to grip a thin precut test ribbon and hold the ribbon in the patient's mouth vertically on either the front or back side of an artificial crown being placed. The crown placement tool is used to position an artificial crown in the patient's mouth onto the prepared tooth alongside the test-ribbon, whereby withdrawing the test ribbon with the ribbon forceps tests and marks the area of interproximal contact of the crown or inlay as well as the amount of pressure of the contact. The crown gripping forceps is also used to place an artificial crown for final cementation. The adhesive is not only used to place and remove an artificial crown or inlay for fitting, but is also used for the patient to bite on during cementation to keep the crown or inlay seated. Alternatively, the kit may be supplied with a number of ball posts and a ball post stand instead of the crown placement tool. In this version of the kit, the ball posts are adhered to the biting surface of the crown. The ball post may then be gripped with the crown gripping forceps. The forceps, while gripping the ball post, may be used to direct the crown into the mouth for marking, fitting, or cementing. | ||||||
| 59 | Dental dentin bonding system | US372036 | 1995-01-12 | US5639239A | 1997-06-17 | Jeffrey O. Earle |
| A method and system for attaching, for example, an artificial dental prosthetic device such as a crown, cap, or bridge to a prepared tooth structure utilizes a fluoride releasing dentin bonding system in combination with a cement layer. The dentin bonding system is first applied to the prepared tooth structure, the dentin bonding system including a primer layer and a VLC microfill composite resin layer in certain embodiments. Then the artificial prosthetic device (e.g. crown) is removably adhered to the prepared tooth structure and the dentin bonding system by way of the cement (e.g. zinc oxide based type). The cement layer sandwiched between the attached device and the dentin bonding system has a shear function less than that of the device and the dentin bonding system but sufficient to permanently bond the device to the tooth and dentin bonding system during masticatory functions and demands, thereby permitting the device to be removed or sheared from the tooth (and dentin bonding system) without destroying either. Thus, the artificial prosthetic device can be removed from the prepared tooth structure in the event that the need to do so arises (e.g. if non-functionality during mastication occurs or if endodontic responses develop). | ||||||
| 60 | Dental restoration holder system | US220115 | 1994-03-30 | US5575649A | 1996-11-19 | Robert L. Lee |
| A small, thin, flat, stiff tab is glued with a hot melt adhesive to the exterior surface of a dental restoration. The tab can then be gripped between a thumb and forefinger while placing the restoration on a tooth to which it is to be laminated. After the restoration is placed on the tooth with permanent bonding material between the restoration and the tooth, the tab is used as a vibrating transmitter to the restoration. The tab is vibrated by positioning a flat-sided dental shaft against an edge of a hole in the tab and rotating the shaft with a dental handpiece. A group of tabs are conveniently supported in slots formed in the upper surface of a support. The slots are dimensioned in relation to the tabs in a manner such that one end of a tab is in a slot while the finger gripping area of the tab extends upwardly, away from the support for convenient gripping by a person's fingers. | ||||||
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