Abstract: A dental prosthesis, typically formed in a press to metal process, includes application of a porcelain composition sufficient to form a veneer on a dental prosthesis supporting metal structure, the composition having an integrated tooth-like translucency providing an aesthetic appearance. The composition is formed of a dentin frit and an enamel frit, typically sintered into a desired ingot shape including an amount of composition sufficient to veneer the prosthesis. The porcelain composition is a component of a kit that includes opaquers, other porcelains and stains useful in finishing to provide an aesthetic prosthesis.
Type:
Grant
Filed:
July 3, 2013
Date of Patent:
September 2, 2014
Assignee:
DENTSPLY International Inc.
Inventors:
Christopher C. Y. Chu, Slawomir Banasiak
Abstract: 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.
Type:
Application
Filed:
October 9, 2013
Publication date:
July 31, 2014
Applicant:
DENTSPLY INTERNATIONAL INC.
Inventors:
Matthew James Falcone, Neil Verma, Sivaramakrishnan Krishnamoorthy, Tieming Ruan, Calvin NG, David A. Zdurne
Abstract: An apparatus usable with an injection molder for producing articles includes a first mold support including a first mold, and a second mold support including a second mold and a first die. The first mold support is movable relative to the second mold support between a first position and a second position. In the first position, the first mold and the second mold being brought together to form an injection molded article include a body having at least one protrusion extending outwardly from the body and facing the second mold. In the second position, the first mold and the first die being brought together to subsequently form the article, the first die selectively subsequently forming an altered cross sectional region in at least a portion of the protrusion, forming an undercut in the altered cross sectional region or between the altered cross sectional region of the subsequently formed protrusion and the body.
Type:
Application
Filed:
January 13, 2014
Publication date:
July 17, 2014
Applicant:
DENTSPLY International Inc.
Inventors:
Michael ANDERSON, David Richard MARONEY
Abstract: Disclosed herein are polymerizable dental materials and dental products based upon such materials. More particularly, disclosed are materials and products based upon BPA-free, polymerizable resins that are derived from 1,4:3,6-dianhydro-glucidol (isosorbide).
Abstract: A cordless dental handpiece, a system including a cordless dental handpiece, and a method of connecting a cordless dental handpiece are disclosed. The cordless dental handpiece includes a first module and a second module. The second module is configured to detachably engage the first module. The second module includes a battery compartment.
Type:
Grant
Filed:
October 1, 2010
Date of Patent:
July 15, 2014
Assignee:
DENTSPLY International Inc.
Inventors:
Benjamin Chronister, Jeremy Kile, Eugene J. Novak
Abstract: A detection system for remotely determining the speed of a rotating tool tip in a pneumatic dental handpiece. A means for detecting the speed of the rotating tool tip monitors a periodic mechanical function at the pneumatic hose connected to the handpiece. The monitored periodic mechanical function serves to provide feedback that is used to control the speed of the rotating tool tip. The means for detecting the speed of the rotating tool detects a mechanical function of the rotating tool tip, which in transmitted to a controller. The controller in turn regulates the operation of an air supply valve in response to the detected mechanical function. The valve regulates the flow of air to the handpiece. By continuously adjusting the flow of air through the valve into the pneumatic hose, the speed of the rotating tool is maintained at the desired cutting speed.
Type:
Grant
Filed:
October 29, 2012
Date of Patent:
July 15, 2014
Assignee:
Dentsply International Inc.
Inventors:
Kevin Brennan, Timothy M. Beck, Eugene J. Novak, Thomas E. Barker, William Raymond, Karl H. Bethke
Abstract: Disclosed herein are acid-neutralizing polymerizable and/or non-polymerizable resins, methods of making such resins, and dental compositions having such resins.
Abstract: The invention relates to a dental fixture for insertion into a human jawbone. The fixture comprises a bone-contacting surface, wherein a resulting filtered set of data presents a surface roughness having the roughness average parameter Sa?1 ?m and the two-dimensional mean slope parameter Rsl?tan 30° for at least 15% of the bone-contacting surface.
Abstract: A dental appliance comprising a hard, shaped body having at least one portion comprising a polymerized blend of: From 0% to about 50% of an uncrosslinked polymer capable of dissolving in component; From about 0% to 50% of a monofunctional polymerizable monomer; From about 0% to 40% of a highly crosslinked polymer in the form of ground particles having average diameters up to about 500 microns; From about 0% to 50% of a crosslinked polymer in the form of discrete particles having average diameters up to about 500 microns and being easily swellable by said monomer; and From about 5% to about 35% of a di- or polyfunctional crosslinking agent.
Abstract: A heating apparatus for heating and sterilizing or disinfecting a material used in dental treatment, the heating apparatus comprising a heating compartment with a heating element for heating all or part of the material within the heating compartment; at least one holder for receiving and holding at least a part of the material used in dental treatment inside the heating compartment; and an disinfection device having a light source for sterilizing all or part of the material within the heating compartment.
Abstract: A method for producing a medical device comprising the steps of: providing a tubular substrate, said tubular substrate enclosing an internal lumen and being provided with at least one recess in the outer surface, wherein said recess does not form a through going hole into the internal lumen; treating the outer surface of said tubular substrate, preferably by means of surface modification and/or by coating; and forming, after said treating of the outer surface, an opening within said at least one recess to form an access opening to said internal lumen.
Type:
Application
Filed:
December 17, 2013
Publication date:
June 26, 2014
Applicant:
DENTSPLY INTERNATIONAL INC.
Inventors:
Martin NYMAN, Jan UTAS, Niklas DAHLBERG, Axel ENGSTRÖM
Abstract: Disclosed herein is a two part retraction system that can be inserted into the sulcus to form a semi-rigid porous elastomer releasing a hemostatic agent suitable for sulcus retraction such that a dental impression may be completed by a dental practitioner.
Abstract: A teaching device 10 includes a radiopaque skull 30 and radiopaque teeth 24, covered with plastic foam and silicone skin 31 to simulate a human head having correct external anatomical form. Pliable lips 20, 21 and other anatomical features realistically reproduce the challenges of taking dental x-rays images.
Type:
Application
Filed:
November 15, 2013
Publication date:
June 19, 2014
Applicant:
DENTSPLY INTERNATIONAL INC.
Inventors:
Curtis L. Steward, JR., Sean V. Ciesielka, Paul K. McDonough
Abstract: The invention discloses a tray system and a method for preparing such tray system. The tray system including a tray with a base having holding arrangements for holding implant components, instruments and/or instrument holders, at least a first and a second information sheet which both are adapted to be independently removably arranged on said base of said tray. Each information sheet has its own distribution of holes, which are placed in register with the holding arrangements of the base when the information sheet is arranged on the base, so that an implant component, instrument or instrument holder is arrangable into one of said holing arrangements through a respective one of said holes.
Abstract: Disclosed herein are a process and composition to make polymerizable resins containing oxazolidone, in which organic acid-catalyzed and/or thermal annealing process got involved and consequently promoted a unique intramolecular transformation from a linear urethane linkage to a cyclic urethane linkage for those specifically constructed urethane resins containing ?-substituted ?-ketone moieties.