| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 433102000 | Broach | 79 |
| 20080213720 | ENDODONTIC INSTRUMENTS MANUFACTURED USING CHEMICAL MILLING - A method of manufacturing endodontic files involves a chemical milling process to yield endodontic files having a desired taper and/or degree of sharpness. The process involves the steps of (a) forming helical cutting edges in the cutting portion of the metallic rod; and (b) chemically milling the cutting portion of the rod so as to sharpen and/or taper the cutting portion. The rod may be formed of any desirable metallic material, for example stainless steel or a nickel-titanium alloy. The cutting edges may be formed by torsioning, cutting, grinding, machining, laser micromachining, or grit blasting. | 09-04-2008 |
| 20080227053 | Device for Preparing and Filling a Tooth Endodontic Cavity - A catheterization device for preparing and filling a tooth endodontic cavity includes at least one root canal tool connected to a drive head. The tool is movable and has a base movably driven by the drive head about the reference axis of the base. A totally or partially eroded, filiform and elastic working part freely extends from the base and has an axis shifted in a parallel position with respect to the reference axis of the base. | 09-18-2008 |
| 20080241785 | HANDSET AND OPTICAL TIP FOR PHOTOSYNTHESIS - A handset includes a high power LED and a vibrator. An optical tip includes a stepwise tapered portion for insertion into a root canal. The optical tip is used in combination with the vibrator for distributing a photosynthesizer in a root canal. The optical tip is used in combination with the LED for activating the photosynthesizer. | 10-02-2008 |
| 20080274439 | Dental device for use in the obturation of a root canal - Kit-of-parts containing
| 11-06-2008 |
| 20090053674 | DENTAL DRILL - The invention relates to a dental drill comprising a shaft as well as a head being provided with a plurality of cutting edges extending lengthwise of the head, wherein the cutting edges are provided with at least one cross-cut at a middle portion of the head. | 02-26-2009 |
| 20090081608 | Instruments for the treatment of radicular dental canals - Instrument for the treatment of the apical portion of radicular dental canals, has a conical shaft ( | 03-26-2009 |
| 20090136896 | DENTAL APPARATUS FOR SHAPING AND CLEANING A ROOT CANAL - Apparatus is disclosed for use in cleaning dental root canals using an endodontic file. The file is mounted in a drill head driven by an electric motor. The motor is normally driven in one, forward direction, but periodically, the motor rotation is reversed for a very short time. The duration of the motor reversal is so short that although the motor rotates in the reverse direction, the inertia and backlash in the transmission between the motor output shaft and the drill head is such that the direction of rotation of the file in the root canal is not changed. | 05-28-2009 |
| 20090176188 | Ablating Apparatus Particularly Useful for Removal of Dental Periapical Lesions - Apparatus for removing a dental periapical lesion at an apex of a root canal in a tooth, includes: an ablating device sized and constructed for (a) introduction through a cavity in the tooth into the root canal; (b) movement therethrough to protrude through the apex into contact with the dental periapical lesion; and (c) rotation while in contact with the dental periapical lesion in order to remove same by ablation. In some described embodiments, the ablating device includes a sleeve and a filament moveable therein to define a protruding curved end to be brought into contact with the dental periapical lesion for ablation thereof by rotation of the filament. In another described embodiment, the ablating device includes a sleeve and a filament within the sleeve and secured at one end to one end of the sleeve, the sleeve being formed with a plurality of slits such that, displacing the sleeve towards its secured end, produces outwardly-bowed surfaces along the slits effective to ablate the dental periapical lesion tissues upon rotation of the sleeve. | 07-09-2009 |
| 20090215006 | ROOT CANAL FILE - A root canal file with a rotating application for widening of the root canal of human or animal teeth to a stipulated diameter and cone by means of cutting edges running in a spiral along the root canal file has much higher flexibility, especially in areas with large diameter. The root canal file has at least two cutting edges; at least one of the cutting edges is recessed over its height, as well as along the root canal file in sections, forming a recess in alternation in several cross-sectional planes. | 08-27-2009 |
| 20100003637 | Dental File with Improved Tip Configuration - A dental instrument for cleaning and shaping a root canal of a tooth includes a working portion having three helical flutes and a guide tip with a first, second, and third face surface. A portion of the guide tip is removed so that each of the first and second surfaces are contiguous to a lateral surface of a conical-shaped envelope defining the original tip but a portion of the third surface is not contiguous to a lateral surface of the conical-shaped envelope. The intersection of the first and second surfaces, however, remains at the center point of the guide tip. The removed portion of the guide tip may result in an arcuate-shaped face surface, an angular-shaped face surface, or some combination of the two. | 01-07-2010 |
| 20100028832 | Dental device for use in the obturation of a root canal - Kit-of-parts containing
| 02-04-2010 |
| 20100092915 | Method of Preparing Nickel Titanium Alloy for Use in Manufacturing Instruments with Improved Fatigue Resistance - A method of treating Nitinol to train the structure thereof to remain in the martensite state, including the steps of subjecting the Nitinol to a strain and while subjected to the strain, thermally cycling the Nitinol between a cold bath of about 0° C. to 10° C. and a hot bath of about 100° C. to 180° C. for a minimum of about five cycles. | 04-15-2010 |
| 20100099057 | ROOT CANAL INSTRUMENT HANDLE MADE OF TWO CO-AXIAL PORTIONS JOINED IN AXIAL TRANSLATION AND IN ROTATION - The invention relates to a method for designing and producing a package intended for the protection and/or transportation of a product. All of the digital design steps for the package are integrated in the method for digitizing the product, which includes a step of laminating a virtual key form of the product used to define geometrical data of each layer of the package to be cut. Then, the cutting is carried out followed by the stacking of the layers of the package defined by the design steps for said package to form a real package. The invention also relates to the package obtained by the method. | 04-22-2010 |
| 20100105004 | ENDODONTIC FILE - An endodontic file ( | 04-29-2010 |
| 20100119990 | ENDODONTIC INSTRUMENT AND INSTRUMENT SYSTEM - An endodontic file for use in root canal treatment has an elongated shank having a long axis with a proximal end connected to a handle adapted to be manipulated by hand or inserted into a rotary drive. The file also includes a working portion with a plurality of continuous uninterrupted helical spiraled flutes extending to a distal end, the working portion including a plurality of alternating cutting segments and reduced diameter non-cutting segments that are spaced proximally to distally to each other along the working portion. The cutting segments may have reduced diameter non-cutting segments that have continuous uninterrupted helical flutes and associated edges interposed between the flutes. And the flutes and associated edges may pass continuously and uninterrupted between adjacent cutting segment and non-cutting segment. An individual file, or a set of files having the foregoing characteristics but with varying arrangements and/or cross sectional profiles, may be used in an endodontic procedure. | 05-13-2010 |
| 20100203471 | DENTAL FILLING MATERIAL - A dental filling material includes a head; a distal tip opposite the head, wherein the distal tip is designed to be first inserted into a tooth root canal, a body tapered from the head to the distal tip, with a diameter decreasing from the head to the distal tip, one or more work length marks formed on the body. The work length marks indicate a work length. One or more taper marks are formed on the head in order to indicate a degree of taper. The work length marks are formed on a portion of the body, the portion of the body extending to the distal tip with a predetermined interval from the taper marks. Both the taper marks and the work length marks have the same color, which corresponds to a value of the diameter, in order to identify the diameter. | 08-12-2010 |
| 20100233650 | Instrument for the treatment of radicular dental canals - Instrument for the treatment of the apical portion of radicular dental canals, has a conical shaft ( | 09-16-2010 |
| 20100255442 | ENDODONTIC FILE WITH MULTI-TAPERED FLUTES - A multi-tapered endodontic file is provided, formed from shaft of material having a shaft. The shaft includes a working portion having one or more tissue-removing edges, points and/or surfaces. The working portion includes at least a first flute and a second flute. The first flute is tapered along its length in accordance with a first predetermined taper function. The second flute is tapered along its length in accordance with a second predetermined taper function. | 10-07-2010 |
| 20100297578 | Endodontic File Combining Active and Passive Cutting Edges - An endodontic reamer/file for cleaning/shaping a tooth root canal having an elongated shank with a proximal end portion, a distal end and a tapered working portion having a longitudinal axis, the external surface of the shank working portion being defined by a plurality of at least two equally spaced apart continuous concaved helical flutes providing concave flute surfaces, the flute surfaces having therebetween an equal number of spiraled, spaced apart flanges, each flange having in a plane perpendicular the longitudinal axis a single outer end surface having opposed first and second ends, each first end forming an active spiraled leading scraping/cutting edge and each second end forming a passive spiraled edge. | 11-25-2010 |
| 20100311010 | Method of producing cut blades for instruments used in root canal treatment - A blank for use in producing an endodontic instrument using a grinding technique includes a cylindrical portion, and a generally conical portion which is to be machined by the grinding technique to form the active part of the endodontic instrument. The generally conical portion of the blank approximates, and is slightly larger than the envelope of the final shape given to the active part of the endodontic instrument after machining. A method is also provided for producing an endodontic instrument having at least one helical cutting edge using the blank. | 12-09-2010 |
| 20110033821 | Rotatable Endodontic Instruments and Methods for their Manufacture - A quasi-hyperbolic endodontic instrument having a cylindrical, elongated shaft with a radius that varies as a smooth, continuous curve along the length of the shaft and is larger near the distal portion of the file than near the proximal end of the file. The distal radius may be 10% or more larger than the proximal radius. This design provides a flexible file that minimizes the possibility of breaking, and ensures that if breakage does occur, it will occur near the handle, allowing the broken bit to be easily removed from the tooth canal. The instrument may further, or instead, have a metal cable connecting the cutting head to the handle to help reduce metal fatigue. | 02-10-2011 |
| 20110033822 | Endodontic File - An endodontic instrument eliminates the need for conventional flutes by employing a tapered tip having an axially extending relief surface such as a flat permitting the passage of liquid and the ejection of debris from the tooth. In one embodiment, an abrasive surface of the tapered tip is produced by electrical discharge machining which provides randomly arrayed microscopic pits directly in the metallic surface of the instrument. | 02-10-2011 |
| 20110081623 | SELF ADJUSTING INSTRUMENT - The invention is an instrument for cleaning and/or shaping and/or widening a channel that exists in or through a solid object. The design of the instrument the superelastic and shape memory properties of the material from which it is made, allow the inner volume enclosed by the instrument, its outer contour, or both to change as a result of the forces exerted upon it while working, thereby shaping the instrument to the three-dimensional contour of the channel. A preferred embodiment of the instrument is an endodontic file for use in the cleaning, shaping, and widening stages of a root canal procedure. | 04-07-2011 |
| 20110159458 | Endodontic Instrument With Modified Memory and Flexibility Properties and Method - Medical instruments, particularly, endodontic instruments with unique limited memory characteristics, and methods for making such instruments. One embodiment includes heat treating a finished endodontic instrument. A related embodiment includes electropolishing a finished endodontic instrument and then heat treating the endodontic instrument. | 06-30-2011 |
| 20110195375 | INTERNAL BROACHING TOOL - An internal broaching tool for broaching profiles delimited by a root and flanks in one aspect arranges a relief part between the toothed part and the calibration part. The calibrating broaching teeth in adjacent rows on the calibration part have a guiding flank (without a clearance angle or with a maximum negative clearance angle of 0.1°) and a cutting flank (with a positive clearance angle). The guiding flanks and the cutting flanks on the calibrating broaching teeth located behind each other in the direction opposite the broaching direction are alternately offset relative to each other in adjacent rows. The position, shape, and size of each guiding flank located downstream in relation to the direction opposite the broaching direction are associated with the position, shape, and size of the associated cutting flank (or the flank of the broaching tooth) in the preceding row. | 08-11-2011 |
| 20110212413 | ROTARY ENDODONTIC FILE WITH FRICTIONAL GRIP - An endodontic file has at least a central longitudinal cord, a helically wound wire at least partially surrounding the cord and an elastomeric grip partially covering the helically wound wire near a first end thereof. The elastomeric grip has an outer diameter that is slightly wider than an internal diameter of a barrel of a dental instrument whereby on insertion into the barrel it is supported therein only by friction. | 09-01-2011 |
| 20110217673 | ENDODONTIC INSTRUMENTS FOR PREPARING ENDODONTIC CAVITY SPACES - Methods and apparatus providing a critical set of endodontic instruments. The set includes a first endodontic instrument, a second endodontic instrument, and a third endodontic instrument. Each endodontic instrument includes a working portion that has a cone-like shape. Each working portion having an effective contact area defined by the exposed surface area of the working portion's respective cone-like shape. The difference between the effective contact areas of the first endodontic instrument and second endodontic instrument being substantially the same as the difference between the effective contact areas of the second endodontic instrument and third endodontic instrument. | 09-08-2011 |
| 20110244419 | MEDICAL INSTRUMENT ASSEMBLY AND A METHOD OF MANUFACTURING THE SAME - To reduce the production costs for medical instruments (preferably endodontic root canal files) and increase their attractiveness to dentists/doctors, a medical instrument assembly is provided, which is made by metal injection molding and comprises at least two medical instruments ( | 10-06-2011 |
| 20120021376 | GUTTA-PERCHA REMOVER - A gutta-percha remover suitable for removing gutta-percha and having flexibility with good compliancy to curvature of a root canal and superior removing capability for forming a sufficient gap between the gutta-percha and the root canal wall is provided. | 01-26-2012 |
| 20120088207 | ROOT CANAL LENGTH MEASUREMENT DEVICE - A root canal length measurement device configured for detachable support on a neck of a dental handpiece and having a generally cylindrical electrical contact element that, in use, is resiliently biased by a spring toward an endodontic file rotatably mounted in the handpiece so that a flat surface of the contact element maintains a steady electrical connection with a shank portion of the endodontic file proximate its point of attachment to the handpiece. | 04-12-2012 |
| 20120094252 | Reciprocal Reverse Rotation Endodontic File - A single use, reciprocal reverse rotation, endodontic file includes a plurality of spaced apart helical flutes with spiraled lands therebetween. The lands have an edge with a positive cutting angle when the file is rotated in one direction and a scraping angle when rotated in the opposite direction. The file provides for sequential rotation of a selected angle in a forward direction followed by rotation of a slightly less angle in a reverse direction. In one embodiment, the cross-sectional area of the flutes is concave polygonal-shaped at a proximal end of the file and square-shaped at the distal end. In another embodiment, the cross-sectional area of the flutes is convex arcuate-shaped, the lands lying normal to the central longitudinal axis of the file. The handle portion of the file may be configured for use in a rotary handpiece or for manual rotation. | 04-19-2012 |
| 20120107766 | ENDODONTIC SYSTEM AND METHOD - The present invention provides a system for the endodontic treatment of a root canal, comprising
| 05-03-2012 |
| 20120122055 | SYSTEM FOR ENDODONTIC TREATMENT - Provided is a system for endodontic treatment of a root canal. The system includes a handpiece containing a rotary motor adapted to rotate an endodontic file secured by the handpiece. A control unit executes a regime of motion of the motor to produce a regime of file motion in which episodes of oscillation of the file are separated by a rotation of the file. When the arc of a rotation is less than the arc of the oscillation that preceded the rotation, the arcs of the episodes of oscillation overlap and the formation of ridges in the root canal is avoided. | 05-17-2012 |
| 20120196245 | Endodontic Instrument and Method - An endodontic instrument with an elongate shaft and a plurality of inverted frusto-conical sections with radial cutting edge disposed along a working portion of the shaft. | 08-02-2012 |
| 20120208145 | MEDICAL INSTRUMENT WITH MODIFIED MEMORY AND FLEXIBILITY PROPERTIES AND METHOD - Medical instruments, particularly, endodontic instruments with unique limited memory characteristics, and methods for making such instruments. One embodiment includes heat treating a finished endodontic instrument. A related embodiment includes electropolishing a finished endodontic instrument and then heat treating the endodontic instrument. | 08-16-2012 |
| 20120208146 | FLUTED REAMER COMPRISING A PLURALITY OF HELICAL CUTTING LIPS - A new reamer has a cut blade including a plurality of helical cutting lips, wherein a number of helical cutting lips varies along a longitudinal axis of the cut blade. | 08-16-2012 |
| 20120214125 | ENDODONTIC BURS, KITS, AND METHODS FOR USING ENDODONTIC BURS - A conical dental bur for endodontic procedures, including exploration, deep troughing, enlargement of orifices, and canal navigation is presented. The bur of the present invention has a narrow, conical bur head with cutting members along its length. The head of the bur of the present invention is mounted to a shank that tapers to the bur head, allowing microscopic observations of endodontic procedures. The bur may be manufactured of tungsten carbide, diamond, ceramics, or other materials. Burs according to the present invention of various shapes and sizes, suited for particular procedures, may be packaged together in kits. Methods of using the burs in endodontic procedures are also disclosed. | 08-23-2012 |
| 20120219927 | Endodontic Rotary Instruments Made From Hollow Tubes and Methods of Manufacturing Thereof - A method for manufacturing a hollow instrument comprising the steps of: providing a hollow tube having a longitudinal tube axis; forming at least one opening along a shaft portion of the hollow tube following a predetermined pattern thereby defining a plurality of fingers; and deforming at least a portion of the hollow tube into a desired shape; and optionally joining at least two fingers along a portion of the opening to secure the hollow tube in the desired shape thereby forming the hollow instrument. | 08-30-2012 |
| 20120225406 | ENDODONTIC TOOL AND METHOD - A reciprocating endodontic hand tool in which the torque applied to an instrument such as a debriding file does not exceed the elastic limit of the file. This reduces or eliminates opportunities for plastic distortion, fatigue and breakage of the file during the canal debriding/cleaning/shaping process. The rotational limits of the instrument may be set at levels that will not subject the instrument to a torque exceeding its elastic limit. | 09-06-2012 |
| 20120231413 | ENDODONTIC INSTRUMENT AND METHOD OF MANUFACTURING - An endodontic instrument for use in a root canal procedure. The instrument is formed from a substantially hollow tube with at least one elongate slotted aperture extending along a portion of a length of the tube. One or more of the edges of the slotted aperture provide cutting surfaces for extirpating material from the walls of a root canal. | 09-13-2012 |
| 20120231414 | Fatigue-Resistant Nitinol Instrument - A fatigue-resistant Nitinol instrument has a working portion in the deformed monoclinic martensitic state and an austenite finish temperature in the range of 40° to 60° C. Because the operating environment of the instrument is about 37° C., the working portion remains in the monoclinic martensitic state during its use. The relatively high austenite finish temperature and fatigue resistance is achieved by subjecting the nickel-titanium alloy to a final thermal heat treat in a temperature range of about 410° to 440° C. while the nickel-titanium alloy is under constant strain of about 3 to 15 kg. Further, the high austenite finish temperature is achieved without subjecting the alloy to thermal cycling to produce shape memory. Additionally, there are no intermediate processing steps occurring between obtaining a finished diameter of the wire or blank through cold working and the final thermal heat treat under constant strain. | 09-13-2012 |
| 20120276500 | ROOT CANAL INSTRUMENT AND METHOD OF MAKING THE ROOT CANAL INSTRUMENT - A root canal instrument includes a twisted strip having a titanium-nickel alloy or a plastics material. The strip has a cross-section having three exterior surfaces or four exterior surfaces. A coating is disposed on at least one exterior surface, the coating includes abrasive particles. A method of making the root canal instrument includes making a basic plate having a thickness of less than one millimeter, coating the basic plate with a coating having the abrasive particles; dividing the basic plate into longitudinally extended strips, twisting the strip to form a root canal drill bit having a cutting edge with abrasive particles disposed on the cutting edge. | 11-01-2012 |
| 20120282571 | ENDODONTIC INSTRUMENTS AND METHODS OF MANUFACTURING THEREOF - A method for manufacturing a nonlinear superelastic file comprising the steps of: providing a superelastic file having a shaft and a file axis; providing a fixture including a file groove being defined by one or more displacement members, the file groove configured for receiving the shaft; inserting at least a portion of the shaft into the fixture along the file groove, the portion of the shaft including a first portion of the shaft; contacting the first portion of the shaft with a first displacement member of the one or more displacement members such that the first portion of the shaft is displaced from the file axis thereby forming a first offset portion of the shaft; heating the portion of the shaft while inserted in the fixture to a temperature of at least about 300° C. for a time period of at least about 1 minute to shape-set the portion of the shaft thereby forming a shape-set nonlinear file. | 11-08-2012 |
| 20120301845 | ENDODONTIC OBTURATOR WITH A HANDLE - An endodontic obturator with a handle is formed by an obturator needle and a handle for handling and allowing the application of the needle in the corresponding root canal. The handle and needle is attached by an intermediate rod through which the sectioning for removing the handle is carried out after applying the obturator needle. The obturator needle has an axial and concentric perforation, while the handle and the corresponding intermediate attachment rod between needle and handle are formed by two equal halves, which are initially separated and projected in opposition to allow the perforation of the obturator needle. Both halves of the handle are coupled in the use position in an overlapping manner with respect to one another forming an axial continuity with the needle. | 11-29-2012 |
| 20120308957 | DENTAL ROOT CANAL TREATMENT INSTRUMENT AND MANUFACTURING METHOD THEREOF - Manufacturing a working portion and a joined portion through the same processing method provides a dental root canal treatment instrument allowing a simplified manufacturing process. A metal, rod-like main frame | 12-06-2012 |
| 20130004913 | METHOD OF CONTROLLING A DRIVE DEVICE FOR PREPARING A ROOT CANAL, AND ROTATING HANDPIECE FOR ROOT CANAL PREPARATION - A method, and handpiece for performing the method, for controlling a drive device for moving a root canal instrument having a drive shaft and at least one cutting edge for preparing a root canal, and at least one drive motor being operated by a control unit. The root canal instrument is moved in at least one reciprocal movement in a first direction of rotation over a predetermined first angle of rotation and subsequently in a second direction of rotation opposite to the first direction of rotation over a predetermined second angle of rotation. After the at least one reciprocal movement, the root canal instrument is rotated over at least one third angle of rotation. | 01-03-2013 |
| 20130040261 | ULTRASONIC TIP FOR AN APICOECTOMY, AND METHOD FOR MANUFACTURING SAME - The invention relates to a method for manufacturing an ultrasonic tip for an apicoectomy, such that the tip has a shape suitable for the shape of a tooth root, comprising the steps of: forming a feedstock by mixing a metal powder including stainless steel with a binder; injecting the feedstock to form an injection-molded part having a plurality of projections integrally formed on the surface thereof; performing debinding to remove the binder from the injection-molded part; sintering the injection-molded part; and performing annealing to increase the ductility and facilitate the bending of the sintered part. | 02-14-2013 |
| 20130059266 | METHOD AND APPARATUS FOR CLEANING AND STORING ENDODONTIC TOOLS - An endodontic instrument servicing system may comprise a socket-forming member that may include spaced wall members that define a socket. An at least partially open-cell foam body may be secured within the socket that is configured for cleaning contaminated instruments. The body may have an indentation force deflection greater than 120 pounds force (lbf) and be configured to substantially grip a rotating contaminated instrument in contact with the body without tearing the foam body. | 03-07-2013 |
| 20130101956 | Endodontic Instrument - The invention is an endodontic instrument which comprises, among other features: a handle having an elongated base with a threaded projection having a recessed distal surface capable of cupping a first terminus portion of an elongated plastic grip attached to an endodontic file; and a cap containing a channel extending through the cap with the channel being threaded for mating with the projection of the elongated base of said endodontic instrument handle, said cap possessing a side and containing an aperture through which an endodontic file can project, the diameter of the aperture being selected to be larger than the diameter of the endodontic file but smaller than the diameter of a plastic grip attached to the endodontic file, said cap further having a recessed interior surface capable of cupping a second terminus portion of an elongated plastic grip attached to an endodontic file. | 04-25-2013 |
| 20130177871 | ENDODONTIC FILES AND METHOD OF PREPARATION THEREOF - The present invention provides a selective coating of an endodontic file, in which the distal end of the file is uncoated or alternatively leaving the outermost part of the blades of the distal end portion uncoated. The distribution of the nanoparticles is thus non uniform along the surface of the file leaving only a part of the file coated. In the present invention, the distal end of the device being subjected to the highest torque is either uncoated at all, or has a coated core and uncoated blades. | 07-11-2013 |
| 20130189644 | Multi-Planar Pre-Curved Rotary Endodontic File - An improved rotary endodontic file includes a multi-planar pre-curved apical portion having a first and a second curvature. The pre-curved apical portion begins at about one-third to one-quarter of the working length as measured from the tip end of the endodontic instrument. The first and second curvature permit the file to continually search and engage the walls of a tooth root canal in a forced inside-forced outside manner. As the file works its way down, it breaks free of any ledges encountered, probes lateral- and delta-type openings, and does not allow the file to stray from the curvature of the canal. | 07-25-2013 |
| 20130244200 | INSTRUMENT FOR DRILLING DENTAL ROOT CANALS - An instrument for drilling dental root canals, includes a tapered rod having on at least an active part of its length, at least one helical flute defining at least one helical cutting edge. The instrument also has a helical hollow on a portion of the active part extending as far as the point of the rod. At least one of the edges defined by the helical hollow is coincident with the cutting edge, the hollow reducing the cutting angle of the cutting edge. Any cross-section of the active part has at least one convex side belonging to the helical flute. The closer the cross-section in question is to the point of the rod, the more the curvature at any point of the convex side increases and tends to approximate the curvature of the circumscribed circle of the cross-section and passing via the cutting edge defined by the helical flute. | 09-19-2013 |
| 20130273497 | Swaggering Endodontic Instruments - Endodontic instruments are described which have at least a section with a center of mass offset from an axis of rotation so that when the instrument is rotated, the section bends away from the axis of rotation. | 10-17-2013 |
| 20130302749 | SWAGGERING ENDODONTIC INSTRUMENTS - Endodontic instruments are described which have at least a section with a center of mass offset from an axis of rotation so that when the instrument is rotated, the section bends away from the axis of rotation. | 11-14-2013 |
| 20130337407 | REAMER ROOT CANAL INSTRUMENT - A dental reamer root canal instrument has a working area that is substantially cylindrical or conical along a longitudinal axis, the instrument including X helical flutes forming X lips of helical cuts, a cut lip being formed by the intersection of two consecutive flutes, wherein X is equal to or greater than three. Over a cross-section of the instrument, the angles (αI, βI, γI) between two consecutive cut lips, measured relative to the longitudinal axis of the instrument, are all different. A method for producing the root canal instrument in a cylindrical or conical rod is also disclosed. The rod is made of a metal or metal alloy material selected for the mechanical bending strength and shape memory properties thereof. The method includes steps for using a grinding wheel to machine a flute to a predefined depth and steps for rotating the rod in front of the machining wheel. | 12-19-2013 |
| 20140004479 | ENDODONTIC INSTRUMENT FOR DRILLING THE ROOT CANALS OF A TOOTH | 01-02-2014 |
| 20140004480 | ENDODONTIC INSTRUMENT FOR DRILLING | 01-02-2014 |
| 20140045142 | ENDODONTIC FILE - An endodontic file for a motorized rotary handpiece includes a coupler element for coupling to the handpiece, a central longitudinal flexible core including a central flexible cable supported by the coupler element, and a helical wire surrounding the core and extending toward a tip of the core opposite the handle end. The flexible core includes a first plurality of inner strands twisted together in a first direction and surrounded by a second plurality of outer strands twisted in an opposite direction. The tip of the core is chamfered and unbonded and protrudes beyond the helical wire at the tip whereby in use reversing a direction of rotation of the endodontic file after the tip of the core reaches the apex of the root canal, unwinds the outer strands, which operate as a brush during removal of the endodontic file from the root canal. | 02-13-2014 |
| 20140057226 | ENDODONTIC INSTRUMENTS WITH PILOT TIPS AND PARABOLIC CUTTING FLUTES - A series of multi-tapered parabolic implements is disclosed for endodontic use. The instruments comprise different sections: a pilot tip, a first portion adjacent the pilot tip and a second portion adjacent the shank. The two portions have different tapers. The tapers of the two different portions blend into each other along a parabola-shaped surface. The pilot tip is radiussed for ease of entry into a root canal with increased safety. | 02-27-2014 |
| 20140113246 | METHOD AND DEVICES FOR PLACING ROOT REPAIR MATERIALS FOR ROOT-END CAVITIES - A device for placing, compacting or burnishing root repair materials for root-end surgery to fill root-end cavities during root-end surgery, and specifically for placing and compacting newer root repair materials to fill root-end cavities. A system for placing, compacting or burnishing root repair materials for root-end surgery to fill root-end cavities during root-end surgery, and specifically for placing, compacting or burnishing newer root repair materials. A method for placing, compacting or burnishing root repair materials for root-end surgery to fill root-end cavities during root-end surgery, and specifically for placing, compacting or burnishing root repair newer root repair materials to fill root-end cavities. | 04-24-2014 |
| 20140242543 | Fatigue-Resistant Nitinol Instrument - A fatigue-resistant Nitinol instrument has a working portion in the deformed monoclinic martensitic state and an austenite finish temperature in the range of 40° to 60° C. Because the operating environment of the instrument is about 37° C., the working portion remains in the monoclinic martensitic state during its use. The relatively high austenite finish temperature and fatigue resistance is achieved by subjecting the nickel-titanium alloy to a final thermal heat treat in a temperature range of about 410° to 440° C. while the nickel-titanium alloy is under constant strain of about 3 to 15 kg. Further, the high austenite finish temperature is achieved without subjecting the alloy to thermal cycling to produce shape memory. Additionally, there are no intermediate processing steps occurring between obtaining a finished diameter of the wire or blank through cold working and the final thermal heat treat under constant strain. | 08-28-2014 |
| 20140315147 | ENDODONTIC SYSTEM AND METHOD - The present invention provides a system for the endodontic treatment of a root canal, comprising
| 10-23-2014 |
| 20140322669 | DENTAL HANDPIECE CONTROL APPARATUS - A dental handpiece control apparatus including: a relay | 10-30-2014 |
| 20140329199 | ENDODONTIC FILE HAVING AN OUTER SPIRAL CORD - An endodontic file ( | 11-06-2014 |
| 20140356809 | Reamer with an improved blade for root canal preparation - The invention relates to a reamer with an improved blade for use in root canal preparation, the blade being spiral-shaped with a pitch increasing towards the tip, and with a cutting or non-cutting tip. At given points along the length of the spiral of the blade, there is a plurality of gaps, the spiral starting again beyond the gaps, wherein the portion where the spiral is interrupted has either a constant or decreasing cross section linking the two diameters before and after the gap. | 12-04-2014 |
| 20150024342 | Endodontic Instrument With Narrow Radial Lands - An improved endodontic instrument has a uniform tapered working length with at least two helical shaped flutes and spiraled lands having a land width no greater than 0.101 mm as measured in a plane perpendicular the central axis of rotation of instrument. The land width is preferably constant along the working length but may vary provided it does not exceed 0.101 mm. The instrument resists mid-root transportation and exhibits superior fatigue performance and cutting efficiency compared to prior art instruments. | 01-22-2015 |
| 20150056571 | Cross-Fluted Endodontic Instrument - An endodontic instrument adapted to be axially reciprocated within a root canal to remove material from walls of the root canal. The endodontic instrument includes an elongate shaft and a working portion. The elongate shaft includes a proximal end adjacent a handle and a distal end terminating at a tip spaced from the proximal end by the length of the instrument. The working portion includes a first helical fluted cutting surface for removing material from the walls of a root canal and a second helical fluted cutting surface for removing material from the walls of a root canal. The first helical fluted cutting surface and second helical fluted cutting surfaces are formed in opposing left-hand and right-hand directions such that material is removed form the walls of a root canal when the instrument is rotated in either a first or a second direction. | 02-26-2015 |
| 20150072307 | Swaggering Endodontic Instruments - Endodontic instruments are described which have at least a section with a center of mass offset from an axis of rotation so that when the instrument is rotated, the section bends away from the axis of rotation. | 03-12-2015 |
| 20150086941 | DENTAL TREATING APPARATUS - A dental treating apparatus according to the present invention includes: a hand piece; a head unit; a driving unit; a resistor for load detection; a load comparing unit; and a control unit. The hand piece drivably holds a cutting tool on the head unit. The driving unit drives the cutting tool in a normal rotation direction or in a reverse rotation direction. The resistor for load detection detects a load applied to the cutting tool. The load comparing unit compares the detected load and a reference load each time driving for rotating the cutting tool in the reverse rotation direction by a predetermined rotation angle is performed. The control unit controls the driving unit based on a result of comparison by the load comparing unit. | 03-26-2015 |
| 20150313686 | ENDODONTIC INSTRUMENT FOR DRILLING ROOT CANALS - An endodontic instrument ( | 11-05-2015 |
| 20150320517 | INSTRUMENT FOR DRILLING DENTAL ROOT CANALS - An instrument for drilling dental root canals includes a tapered rod having over at least a part of its length—the active part—a polygonal cross-section forming at least two cutting edges, the active part terminating by a point and being defined by an envelope of cylindrical or conical shape, whose longitudinal axis coincides with the instrument's axis of rotation. The active part has a first portion extending from the point and a second portion extending following the first portion towards the rear of the active part. At least one cross-section of the first portion has a centre of mass located on the axis of rotation and the cutting edges are located on the envelope. Any cross-section of the second portion has a centre of mass offset with respect to the axis of rotation and at least one cutting edge defined by the cross-section is located set back. | 11-12-2015 |
| 20150359608 | Multi-Planar Pre-Curved Rotary Endodontic File - An improved rotary endodontic file includes a multi-planar pre-curved apical portion having a first and a second curvature. The pre-curved apical portion begins at about one-third to one-quarter of the working length as measured from the tip end of the endodontic instrument. The first and second curvature permit the file to continually search and engage the walls of a tooth root canal in a forced inside-forced outside manner. As the file works its way down, it breaks free of any ledges encountered, probes lateral- and delta-type openings, and does not allow the file to stray from the curvature of the canal. | 12-17-2015 |
| 20150366635 | Instruments And Coatings Formed From A Porous Material - An endodontic instrument for cleaning/shaping a tooth root canal that includes an elongated shaft composed of a porous material, the shaft having a proximal end portion, a distal end and a tapered working portion having an external surface and a rotational axis, the working portion extending from the proximal end portion to the distal end. | 12-24-2015 |
| 20150374458 | ENDODONTIC TOOL WITH ROTATIONAL AND AXIAL RECIPROCATION - A hand-held tool for moving an endodontic instrument is provided, for preparing a root canal for filling. The tool comprises a chuck for holding the instrument, a rotational driver mechanism for rotating the chuck alternately in forward and reverse directions, and an axial driver mechanism for reciprocating the chuck axially. | 12-31-2015 |
| 20160022377 | COMBINED USE OF ULTRASOUND WITH NICKEL TITANIUM ENDODONTIC FILE IN ENDODONTIC PROCEDURE - Methods and related systems for cleaning a root canal of a tooth employing a super-elastic NiTi endodontic file while applying ultrasonic energy during the cleaning procedure. Such a method may include inserting an endodontic file into a root canal of a tooth in which the file includes a working portion comprising a super-elastic NiTi alloy. | 01-28-2016 |
| 20160051339 | ENDODONTIC INSTRUMENT FOR DRILLING THE ROOT CANALS OF A TOOTH - A method of forming a dental tool or instrument having a memorized shape. The method comprises selecting a nitinol wire having an initial transition temperature below room temperature; grinding the nitinol wire to form the dental tool or instrument so as to have a shank, located adjacent a first end, and a working area, with at least one cutting edge, located adjacent an opposite second leading end; molding the working area into a molded shape having at least one protrusion formed therein; heating the dental tool or instrument to both: a) alter the initial transition temperature of the dental tool or instrument to a final transition temperature, and b) memorize the Molded shape including the at least one protrusion so that the dental tool or instrument will automatically return to the molded shape having the at least one protrusion when at a temperature at or above the final transition temperature. | 02-25-2016 |
| 20160067012 | ENDODONTIC INSTRUMENT, IN PARTICULAR FOR REAMING A ROOT CANAL - An instrument ( | 03-10-2016 |
| 20160113735 | ROOT CANAL INSTRUMENT HAVING AN OVOID OR OVAL SECTION - The root canal instrument for preparing a housing for a pivot inside dental roots includes a working part extending along a longitudinal axis. A cross-section of a frustoconical envelope of the working part embodying an elliptical section or an ovoid section or an oblong section or a section of the type includes a front circle portion and a rear circle portion joined by two side bend portions. A diameter of the front circle portion is longer than or equal to a diameter of the rear circle portion. | 04-28-2016 |
| 20160128800 | ENDO FILE FOR DENTAL ENDODONTIC TREATMENT - An endo file for dental endodontic treatment includes: a head portion inserted into and detachably coupled to a hand piece; a tissue removing portion inserted, from the lower side of the head piece, into a patient's root canal for removing the nerve of a tooth; and a stress dispersion portion provided between the head portion and the tissue removing portion and having at least one horizontal penetration hole so as to buffer stress concentration generated during the rotation of the endo file, and to minimize endo file breakage. | 05-12-2016 |
