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Dentsply Sirona Inc patents


Recent patent applications related to Dentsply Sirona Inc. Dentsply Sirona Inc is listed as an Agent/Assignee. Note: Dentsply Sirona Inc may have other listings under different names/spellings. We're not affiliated with Dentsply Sirona Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Dentsply Sirona Inc-related inventors


 new patent  Clamping device for clamping a cylindrical instrument shank

The invention relates to a clamping device (1) for clamping a cylindrical instrument shank, in particular, a dental instrument, said clamping device comprising a spring-loaded element (2) for holding the instrument shank, a hollow shaft (3) for transmitting a rotational movement, and a plunger, wherein the spring-loaded element (2) is designed as a sleeve with a cylindrical wall, a first opening (6) and a second opening (7); and the wall has cut-outs (8). The spring-loaded element (2), the shaft (3) and the plunger (4) have axes of rotation that are arranged coaxially; the shaft (3) protrudes at least partially into the first opening (6) of the spring-loaded element (2); and the plunger (4) protrudes at least partially into the second opening (7) of the spring-loaded element (2).. ... Dentsply Sirona Inc

Method and camera for the three-dimensional measurement of a dental object

The invention relates to a method and to a camera for the three-dimensional measurement of a dental object, comprising at least one light source, which emits an illumination beam, at least one projection means, which produces a projection pattern, focusing optics, which display the projection pattern in a plane of sharp focus at a defined focal distance relative to the dental camera. The projection pattern projected onto the object is reflected by the object as an observation beam and is acquired by means of a sensor. ... Dentsply Sirona Inc

Camera and method for the three-dimensional measurement of a dental object

The invention relates to a method and a camera for the three-dimensional measurement of a dental object, comprising at least one light source that emits an illumination beam, at least one projection mask that produces a projection pattern, focusing optics that display the projection pattern in a plane of sharp focus at a defined focal distance relative to the dental camera. The projection pattern projected onto the object is reflected by the object as an observation beam and is acquired by means of a sensor. ... Dentsply Sirona Inc

Methods, apparatuses, computer programs, and systems for creating a custom dental prosthesis using a cad/cam system

Preparation of a dental prosthesis that includes a gingiva part having retention holes for seating of manufactured teeth, with the retention holes being enlarged relative to the manufactured teeth. A size and geometry of each of the enlarged retention holes are determined based on a size and geometry of the corresponding manufactured tooth. ... Dentsply Sirona Inc

Method for the production of a dental restoration

The invention relates to a method for the production of a restoration from a blank consisting of, or containing, a lithium silicate glass ceramic, wherein at least two layers of ceramic material of different compositions are filled into a mold layer-by-layer and after filling of the layers they are then pressed and sintered, wherein after filling of a first layer this is structured on its surface in such a way that the first layer, viewed across its surface, differs in its height from region to region, and then a layer with a composition that differs from the first layer is filled as a second layer into the mold. After sintering the dental restoration is produced from the blank by mechanical working.. ... Dentsply Sirona Inc

Ultrasonic dental handpiece with rotary coupling

An ultrasonic dental handpiece system with rotary coupling comprising a dental handpiece and a dental handpiece tip wherein the system incorporates a swivel mechanism and dynamic fluid interface for the dental handpiece and dental handpiece tip to rotate freely relative to the dental handpiece cable thereby decoupling the handpiece from a torsion load applied to it by the handpiece cable and internal tubing and wires. The ultrasonic dental handpiece with rotary coupling generally includes a handpiece to which a piezo assembly and secondary coil are housed and a cable assembly including a primary coil and handpiece cable wherein the handpiece cable provides a supply of electrical energy and cooling lavage. ... Dentsply Sirona Inc

Lithium silicate glass ceramic

The invention relates to a lithium silicate glass ceramic, which contains at least lithium disilicate as a crystal phase, and lithium aluminum silicate as further crystal phase. The lithium silicate glass ceramic in its initial composition contains al2o3 at 1.5 to 3.5 percent by weight, and k2o at 0.6 to 1.8 percent by weight.. ... Dentsply Sirona Inc

Shade-coordinated, veneering porcelain system for dental prostheses

The invention is related to a shaded porcelain system that contains two types of veneering porcelains: natural enamel/dentin body and opal enamel, as well as stain & glaze porcelain, with cte that are compatible to and which can be used for veneering a dental prosthesis made of 1) lithium disilicate-based glass-ceramic substructure that is formed by hot pressing or cad/cam machined process or 2) ytzp zirconia-based ceramic substructure that is formed by cad/cam machined process in order to improve overall esthetics of final prosthesis.. . ... Dentsply Sirona Inc

Dental composition

Disclosed herein is a dental composition having a polymerization initiator system with an aromatic tertiary phosphine compound. Further disclosed is the use of the aromatic tertiary phospine compound for the preparation of a photocurable dental compositions.. ... Dentsply Sirona Inc

Dentsply Sirona Inc.

. . ... Dentsply Sirona Inc

Handpiece head for a dental handpiece

The invention relates to a handpiece head (1) comprising a housing (2) and a closing cap (3), wherein the housing (2) is releasably connected to the closing cap (3) by means of a screw connection (4). The closing cap (3) comprises at least one recess (8) or at least one elevation (7), wherein the housing (2) correspondingly comprises at least one elevation (7) or at least one recess (8). ... Dentsply Sirona Inc

Method and measurement system for optically measuring an object

The invention relates to a measurement system for optically measuring an object, comprising a dental camera and an optical attachment. In this case the optical attachment comprises at least one lens, which is shaped and arranged in such a way that the optical attachment has a negative focal length so that a measurement field or a measurement volume of the dental camera is enlarged by the optical attachment.. ... Dentsply Sirona Inc

Multiple layered denture block and/or disk

This invention designs and builds multiple layers (two layers or more) of millable dental blocks or disks for milling of various dental devices, specifically denture base blocks or disks of denture base material, where milled teeth cavities to receive artificial denture tooth materials to form final dental devices, such as partial and full dentures. This invention also designs and builds multiple layers (two layers or more) of millable denture base or denture blocks or disks comprised of denture base or/and denture tooth materials to form final dental devices, such as partial and full dentures. ... Dentsply Sirona Inc

Sintering furnace for components made of sintered material, in particular, dental components

The invention relates to a sintering furnace (1) for components (15) made of a sintered material, in particular for dental components, comprising a furnace chamber (2) having a chamber volume (vk) and a chamber inner surface (ok), wherein a heat-up device (5), a receiving space (9) having a gross volume (vb) located in the chamber volume (vk) and delimited by the heat-up device (5), and a useful region (10) having a useful volume (vn) located in the gross volume (vb), are disposed in the furnace chamber (2). The furnace chamber (2) has an outer wall (3) consisting of a plurality of walls having a wall portion (7) to be opened for introduction into the receiving space (9) of a component to be sintered (15) and having an object volume (vo). ... Dentsply Sirona Inc

02/22/18 / #20180049843

Multi-directional handpiece

A multi-directional handpiece that includes a motor drive extending along and configured for rotation about a body axis, the motor drive having: a motor gearing at a proximal end of the motor drive; and a file gearing in engagement with the motor gearing for transferring the rotational and axial movement to a workpiece; and a housing for the workpiece; and wherein through rotation of the motor drive, the workpiece moves in an axial oscillating motion while being rotated.. . ... Dentsply Sirona Inc

02/15/18 / #20180042707

Passive fit of implant bridges and implant bars by means of a cad/cam tool for the model-free creation of implant-supported restorations

The invention relates to a specimen part (1) for creating a stress-free fit, a so-called passive fit, of implant-supported and/or abutment-supported bridges (2) and bars (3) by means of a cad/cam tool for the creation of restorations (5), and to a method for creating a restoration from a digital model (15) of a patient's jaw provided with at least two implants and/or abutments, wherein the model (15) is determined by means of an intraoral scan (14). In order to improve the precision of restorations and to shorten the production process, provision is made that the specimen part (1) per implant (4) and/or abutment has a scannable structure (6), preferably at a defined distance (7) and angle (8) to the implant (4) and/or abutment. ... Dentsply Sirona Inc

02/08/18 / #20180036105

Ultrasonic tip assembly

A tip assembly for use with a dental tool, the tip assembly comprising a housing for attaching to the dental tool, at least one aspiration needle having a passageway extending at least partially through the aspiration needle, a substantial length of the aspiration needle, or at least from one end to the other end of the aspiration needle, the passageway providing a single continuous path to aspirate the irrigant and/or debris from the root canal cavity of the tooth, and at least one irrigation needle having a passageway extending at least partially through the irrigation needle, a substantial length of the irrigation needle, or at least from one end to the other end of the irrigation needle, the passageway provides a continuous flow path for delivering fluid/irrigant from a reservoir in communication with a proximal end of the irrigation needle to the distal end of the irrigation needle and into a root canal/coronal opening of a tooth.. . ... Dentsply Sirona Inc

02/01/18 / #20180028276

Dental laser for the treatment of soft tissue

A dental laser comprises a hand piece (100) having a grip region (100a) and a treatment tip (101) with an outlet point (101a), arranged at a distal end, for laser light (102), and further comprises a light source (103) and light conduction means (105) for providing laser light (102) at the outlet point (101a). The laser light (102) has a wavelength (104) of 445±20 nm, in particular, 445±10 nm and more particularly 445±5 nm, and an optical power output is provided at the outlet point in a power range of at least 2 w, advantageously at least 3 w and, in particular, 3.5 w. ... Dentsply Sirona Inc

02/01/18 / #20180028132

Dental x-ray sensor holder

A dental x-ray sensor holder 10 for securing an x-ray sensor 1 to a holder using suction created between the sensor and a backing plate 3 of the sensor holder. The dental x-ray sensor holder generally includes a bite block 2 with a first end and a second end, a backing plate 3 affixed to or formed contiguously with the second end of the bite block, and an opening 17 to a cavity 20 in the holder, wherein said cavity 20 leads an evacuation chamber 14 for creating a vacuum between the holder and an x-ray sensor.. ... Dentsply Sirona Inc

02/01/18 / #20180028131

Dental x-ray sensor holder and dental x-ray sensor sheath therefor

A dental x-ray sensor holder 1 and sheath 4 for affixing a sensor to a backing plate 2 of the holder 1. The dental x-ray sensor holder 1 and sheath 4 generally includes a sensor holder 1 with a backing plate 2, having one or more spring arms 3, and affixed to or formed contiguously with a proximal end of a bite block 9 of the holder 1. ... Dentsply Sirona Inc

01/11/18 / #20180008375

Circumferential matrix system

A circumferential matrix system having a matrix band is described herein. The circumferential matrix system can be tightened around a tooth without the need or use of a retaining ring.. ... Dentsply Sirona Inc

01/11/18 / #20180008374

Instrument for drilling dental root canals

An endodontic instrument comprising a tapered rod, the rod comprising an active portion, the active portion terminating at a distal tip end of the rod and defining a conical envelope, the conical envelope having a longitudinal axis that coincides with an axis of rotation of the instrument.. . ... Dentsply Sirona Inc

01/11/18 / #20180008373

Dynamic seal for use in a dental handpiece

A dynamic seal for use in a dental handpiece is disclosed. The dynamic seal includes a seal carrier including a first portion having a first feature for receiving a first compliant member and a second portion having a second feature for receiving a second compliant member, and a flange disposed between the first feature and the second feature.. ... Dentsply Sirona Inc

01/04/18 / #20180000570

High strength three dimensional fabricating material systems and methods for producing dental products

This invention relates to printable high strength/toughness polymerizable material systems for making dental products such as artificial teeth, dentures, splints, veneers, inlays, onlays, orthodontic appliances, aligners, copings, frame patterns, crowns and bridges and the like. A dlp, stereolithography, modified or their modification and combination based printer is used to cure polymerizable material in several different methods of this invention to build-up the object. ... Dentsply Sirona Inc

01/04/18 / #20180000561

Dental material delivery system

Described herein is a dental material applicator system comprising a segmented capsule and handpiece. The capsule separately holds a powder and a liquid such that upon activation in the handpiece by an operator, the powder and liquid are mixed into a paste. ... Dentsply Sirona Inc

12/21/17 / #20170360534

Three-dimensional fabricating material systems and methods for producing layered dental products

This invention designs and builds multiple layers (two layers or more) of various dental devices, specifically denture base or denture, where printed multiple layered denture base with teeth cavities to receive artificial denture tooth materials to form final dental devices, such as partial and full dentures. It can also print denture teeth. ... Dentsply Sirona Inc

12/14/17 / #20170354388

Method and apparatus for providing two digital panoramic layer images

The invention relates to a method for providing a first and a second digital panoramic layer image optimized for a comparison, wherein the first and second panoramic layer images each have multiple projections detected and stored for them by means of at least one digital detector during an at least partial revolution of a recording unit around an object to be recorded, and the first and second panoramic layer images are each produced from the multiple projections in accordance with a computation code and by forming a panoramic layer. Differences between the first and second panoramic layer images are minimized by altering at least one parameter of the computation code for fresh production of the first and/or second panoramic layer image. ... Dentsply Sirona Inc

12/07/17 / #20170348072

Ascertaining the spatial positions and orientations of implants anchored in a jaw of a patient

A method is proposed for ascertaining the spatial positions and orientations of at least two implants (120) anchored in a jaw of a patient, said method having the following steps: 1. An adhesive bond aid (100) is produced that bridges the implants and has negative molds (140) of adhesive caps (110), wherein the negative molds fit on the adhesive caps if these are affixed to the implants, and wherein the negative molds allow a clearance relative to the adhesive caps. ... Dentsply Sirona Inc

11/23/17 / #20170333164

Method for generating a model of a dental replacement part

The invention relates to a method for generating a digital model (6) of a dental replacement part, formed by a dental prosthesis and a prosthesis base having a rear protection plate, and for producing a dental replacement part of this type, wherein, in a digital model (1) of a jawbone to be provided and a digital dental prosthesis model (2) positioned therein, an interface (3) is automatically and/or manually marked in the region of the dental prosthesis model (2), a rear protection plate model (4) is formed by the interface (3), an abutting surface (1′) of the digital jawbone model (1) and a region of a surface (2′) of the dental prosthesis model (2) joining the surface (1′) and the interface (3), a revised dental prosthesis model (5) is formed from the digital dental prosthesis model (2) by adopting the interface (3) as a surface, and the digital model (6) of the dental replacement part is created from the rear protection plate model (4) and the revised dental prosthesis model (5).. . ... Dentsply Sirona Inc

10/26/17 / #20170307711

Method for generating a radial or spiral mrt image

Disclosed herein is a method for generating an mri image in which a radial or spiral k-chamber path with a constant angular increment psi is used to take an mri image, the angular increment psi being in the angular range of between 5-55 degrees or being in the corresponding supplementary angle psi′ and is selected according to the formula psin,m=pi/(n+1/(m+tau−1)). Alternatively, for an angular increment psi which deviates from the angle increment of the optimal distribution of n radial profiles psiopt=180°/n, the minimum scanning efficiency of the angular increment psi for n>21 profiles is greater than 0.95, the angular increment psi is in an angular range of 5° to less than 68.7537°, in particular between 5-55 degrees or in the corresponding supplementary angle psi′. ... Dentsply Sirona Inc

10/26/17 / #20170303877

Orthodontic diagnostic method

The invention relates to an orthodontic diagnostic method wherein at least one initial two-dimensional x-ray image (1) of a first zone (2) of a head (3) is taken. Then at least one three-dimensional x-ray image (4) of a second zone (5) of a dental situation is taken, and the three-dimensional x-ray image (4) is combined with the initial two-dimensional x-ray image (1) using a registration process in order to obtain a full image (8).. ... Dentsply Sirona Inc

10/05/17 / #20170280725

Compositions and methods for inhibition and interruption of biofilm formation

Compositions and methods for inhibiting and interrupting biofilm formation, and for destabilizing established biofilms are provided, the novel compositions including polymeric resins and monomeric non-polymerizable and polymerizable resins. More particularly, the compositions and methods enable the protection and removal of biofilms from surfaces in the context of medical, consumer, domestic, food service, environmental and industrial applications, where the effects constitute beneficial and desirable biofilm attenuating activity.. ... Dentsply Sirona Inc

09/28/17 / #20170274220

Method and arrangement for cleaning of a canal

The invention relates to a method and an arrangement for the cleaning of a circumferentially closed canal by means of a light guide conducting a laser beam. The entry of the laser beam into the light guide is interrupted when the free end of the light guide is outside of the canal and/or the movement of the light guide within the canal is monitored and that if there is no movement or the movement is below a threshold value then a signal is triggered and/or the laser radiation is turned off or its output is reduced.. ... Dentsply Sirona Inc

09/28/17 / #20170273764

Method to manufacture a colored blank, and blank

The invention relates to a method for manufacturing a colored blank, which contains zirconium dioxide and is intended for the manufacture of a dental restoration, whereby raw materials in powder form, at least some of which contain one coloring substance each, are mixed with, zirconium dioxide as the main ingredient, the resulting mixture is pressed and subsequently subjected to at least one thermal treatment. To generate the desired fluorescence, it is intended that in the raw materials in powder form one uses as coloring substances at least terbium, erbium, cobalt, as well as one substance that generates a fluorescence effect in the dental restoration, however not iron, aside from naturally occurring impurities.. ... Dentsply Sirona Inc

09/28/17 / #20170273755

Method for sealing of a canal

The invention relates to a method for sealing of a circumferentially closed canal. A closure element is secured to one free end of a light guide conducting a laser beam. ... Dentsply Sirona Inc

09/21/17 / #20170266081

Radical polymerisation initiators for light-curable dental materials

The invention provides a light-curable dental material comprising a polymerizable compound having at least one ethylenically unsaturated bond and a hexaaryl bisimidazole as a photopolymerisation initiator.. . ... Dentsply Sirona Inc

09/14/17 / #20170258563

Method for producing a blank, blank and a dental restoration

The invention relates to a method for the preparation of a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a die and wherein the materials are pressed and after pressing are sintered. A layer of the first ceramic material is thereby filled into the die and a first cavity formed in the layer, the second ceramic material is then filled into the first open cavity and the materials pressed together and then heat-treated.. ... Dentsply Sirona Inc

08/17/17 / #20170231724

Method of attaching a dental article to the surface of the tooth

A method of attaching a dental article to the surface of a tooth includes providing the dental article and applying a coating including upconversion phosphors to a surface of the dental article. The method also includes applying a dental cement composition to the surface of the tooth and placing the dental article on the surface of the tooth such that the coating is adjacent the dental cement composition. ... Dentsply Sirona Inc

07/06/17 / #20170189276

Method for creating a mineral trioxide aggregate material with improved biological effects

A dental device is improved in its ability to produce hydroxyl apatite by having a layer of mineral trioxide aggregate (mta) deposited thereon. A tile of mta is prepared, heat treated and sintered to produce a micronized tile of mta that can then be deposited by physical vapor depositions, hot isostatic pressing, molding or other conventional technique.. ... Dentsply Sirona Inc

07/06/17 / #20170189146

Method for producing a dental restoration

The invention relates to a method for the production of a dental restoration from a blank, which has regions or layers of ceramic materials with differing compositions, under use of the method steps, filling of the ceramic materials into a mold, pressing of the ceramic materials to form a blank, removal of the blank from the mold, temperature treatment of the blank, wherein the ceramic materials are filling into the mold in such a way that layers and/or regions after temperature treatment have a profile that is available as a digital set. There is then a virtual contouring of the dental restoration taking shrinkage into account, a virtual representation of the blank, positioning of the virtually represented dental restoration in the virtually represented blank taking into account the material characteristics of the layers and/or regions, determination of the data for the blank which correspond to the position of the virtually arranged dental restoration or the mold in the blank, as well as transfer of the data to a machine to produce the dental restoration from the blank.. ... Dentsply Sirona Inc

06/29/17 / #20170183270

Method for producing a shaped body and molding

The invention relates to a method for the production of a shaped body comprising at least the method steps of producing a blank having an open porosity by pressing and treating pourable material in a first heat treatment step comprising or consisting of a metal oxide, infiltrating the blank with an infiltration fluid containing a precursor of the metal oxide, precipitating hydroxide of the metal from the infiltration fluid by treating the blank with a basic solution, forming the metal oxide from the hydroxide by treating the blank in a second heat treatment step, wherein the blank is processed before or after the second heat treatment step to achieve a shape that corresponds to the shaped body.. . ... Dentsply Sirona Inc

06/29/17 / #20170181933

Balance functioning denture tooth systems containing toughened compositions

A dental composition that includes one or more monomers, a plurality of crosslinking agents, and an initiator.. . ... Dentsply Sirona Inc

06/29/17 / #20170181818

Method for producing a blank and dental restoration

The invention relates to a method for the preparation of a blank from a ceramic material, wherein at least two layers of ceramic material of different compositions are filled into a die layer-by-layer and after filling of the layers they are then pressed and sintered, wherein after filling of a first layer this is structured on its surface in such a way that the first layer, viewed across its surface, differs in its height from region to region, and then a layer with a composition that differs from the first layer is filled as a second layer into the mold.. . ... Dentsply Sirona Inc

06/29/17 / #20170181816

Method for the computer-aided editing of a digital 3d model

A method for the computer-aided editing of a digital 3d model (1) of a dental object using digital tools (t1, t2, t3) provides for the identification of different dental-specific regions (r1, r2, r3) of the 3d model (1) that are affected by the tool (t1, t2, t3) in different ways, for computation of the effect on the whole 3d model and for display thereof as a proposal model (2) together with the 3d model (1). The proposal model (2) is then rejected or accepted in part or in full. ... Dentsply Sirona Inc

06/22/17 / #20170176103

Sintering furnace for components made of sintered material, in particular dental components

The invention relates to a sintering furnace (1) for components (15) made of a sintered material, in particular for dental components, comprising a furnace chamber (2) having a chamber volume (vk), wherein a heating device (5), a receiving space (9) having a gross volume (vb) located in the chamber volume (vk) and delimited by the heating device (5), and a useful region (10) having a useful volume (vn) located in the gross volume (vb), are disposed in the furnace chamber (2). The furnace chamber (2) has an outer wall (3) consisting of a plurality of walls having a wall portion (7) to be opened for introduction of a component to be sintered having an object volume (vo) into the receiving space (9). ... Dentsply Sirona Inc

06/08/17 / #dental composition comprising

Dentsply Sirona Inc.

. . ... Dentsply Sirona Inc

05/18/17 / #20170135785

Endodontic rotary instruments made from hollow tubes and methods of manufacturing thereof

A hollow endodontic instrument having: a file axis; a proximal end; a tip; and a shaft portion between the proximal end and the tip; wherein the shaft portion defines a hollow void at least partially bounded by a plurality of fingers and a plurality of longitudinal spacings, each finger extends from the proximal end and includes an outer surface and an inner surface extending between longitudinal opposing walls; and wherein a portion of at least one of the longitudinal opposing walls includes a cutting edge.. . ... Dentsply Sirona Inc

05/11/17 / #20170128173

Scanning device

The invention relates to a scanning device, comprising a handle (10) to be held by an operating person and a mouthpiece (20). The scanning device is inserted into the mouth of a patient by means of the mouthpiece (20). ... Dentsply Sirona Inc

04/06/17 / #20170095319

Method and system for designing custom restorations for dental implants

A computer-implemented method of designing a dental restoration component, including: receiving a set of design dimensional constraints which must be satisfied for the dental restoration component; receiving a set of design parameters for the dental restoration component; receiving a definition for a penalty function which takes into account at least more than one of said design parameters and which signals a constraint being reached when the value of any of said parameters violates a constraint; and using the penalty function, assigning a value to each of said design parameters for the dental restoration component, consistent with the constraints for said component.. . ... Dentsply Sirona Inc

03/23/17 / #20170079757

Method of diagnosing optical inhomogeneity of a volume scattering object and a dental tool

A method of diagnosing optical inhomogeneity of a volume scattering object is provided. The method includes the steps of providing a substance coated with phosphorous materials, adapting the substrate to a surface of a volume scattering object to be diagnosed, and trans-illuminating the volume scattering object with radiation. ... Dentsply Sirona Inc

03/16/17 / #20170071712

Three-dimensional printing system and methods of use

A three-dimensional printing system including a feed source of uncured filled resin material, a print head configured to apply discrete layers of a composition including upconversion phosphors, and a radiation source configured to irradiate layers of uncured filled resin material and deposited layers of the composition is provided. A method of three dimensionally printing a dental article is also provided.. ... Dentsply Sirona Inc

03/16/17 / #20170071700

Dental separator and matrix system for producing dental restorations

A dental separator device for applying pressure against adjacent teeth to separate the teeth from one another so that a dental restoration can be made. The separator device increases the interproximal space between the adjacent teeth giving the dental clinician improved visibility and working space. ... Dentsply Sirona Inc

03/09/17 / #20170070169

Control circuit and control method for a synchronous machine

The invention relates to a control circuit for a synchronous machine (1) of a dental handpiece, comprising a voltage supply (2) and a clamping circuit (7) connected by switches (6). The invention also relates to a method for determining an angular position of a rotor of a synchronous machine (1), wherein a power supply is switched off for a total period of time (t2), a clamping circuit (7) is connected for a time interval (t1), whereupon an electromotive force is measured, and the angular position is determined from the electromotive force.. ... Dentsply Sirona Inc

03/02/17 / #20170057933

Polymerizable resins containing a 1,3,5-hexahydro-1,3,5-triazine moiety, methods of making, and dental compositions containing the same

Disclosed herein are methods of making polymerizable resins containing a 1,3,5-hexahydro-1,3,5-triazine moiety and dental compositions comprising such novel hydrolytically-stable, polymerizable resins derived from a 1,3,5-hexahydro-1,3,5-triazine.. . ... Dentsply Sirona Inc

03/02/17 / #20170056136

Method for performing an optical three-dimensional recording

The invention relates to a method for performing an optical three-dimensional recording by using a hand-held dental camera, wherein the camera automatically records a plurality of individual optical recordings in succession at a defined frequency during the measurement, wherein the individual three-dimensional optical recordings are combined by means of registration into an overall recording of a dental object to be measured. Before the measurement is performed, a three-dimensional standard jaw model is displayed by means of a display device, wherein a first control point on the standard jaw model is displayed by means of the display device. ... Dentsply Sirona Inc

01/19/17 / #20170014208

Self-ligating orthodontic brackets

The present invention employs a self-ligating orthodontic bracket comprising a body having a pair of laterally spaced gingival tie wings and a pair of laterally spaced occlusal tie wings, the gingival and occlusal tie wings projecting from a labial surface of the body; an arch wire slot extending mesially-distally across the body and between the gingival and occlusal tie wings to accommodate an arch wire; a free-sliding, controlled-locking, or pivoting clip wherein the clip allows placement and removal of the arch wire when in the open position and prevents the displacement of the arch wire from the bracket member when in the closed position.. . ... Dentsply Sirona Inc








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