Abstract: A medical or dental handpiece has a grip. The grip includes first to third rotation shafts. The first and second shafts are connected through a first gear mechanism and the second and third shafts are connected through a second gear mechanism so that a rotation is transmitted from the first shaft through the first gear mechanism to the second shaft and then from the second shaft through the second gear mechanism to the third shaft. The first or second gear mechanism has an internal gear secured on one shaft and an external gear secured on the other shaft, the internal and the external gears being engaged with each other. The external gear is substantially enclosed within a cylindrical plane extending along a peripheral edge of the internal gear.

Abstract: The present invention provides for a hybrid dental implant having a screw body with at least one external thread, which includes an upper portion with an open ceiling configured to receive one or more bone inducing agents and/or therapeutic agents, a middle portion having a hollow inner channel connected to side openings, and a lower portion with a closed floor. The bone inducing agents and/or therapeutic agents are introduced through the open ceiling into the hollow inner channel into the side openings, which enables the bone tissue ingrowth into the hollow inner channel and bone tissue outgrowth from the hollow inner channel to the surrounding bone. It also provides for a method of installing and using the hybrid dental implant thereof.

Abstract: A composition, containing a carrier medium and particles based on a metal compound with a weight-average particle diameter of 1 nm to 10 ?m is useful to clean metal or ceramic surfaces which are part of a dental restoration or of an implant abutment.

Abstract: Embodiments of the present disclosure are directed to devices and a method for orthodontic torquing. For the various embodiments, a pliers for crimping coils of an orthodontic torquing spring to an arch wire includes: a pair of plier halves, each of the plier halves including a handle, a jaw, and a pivot section, each of the jaws including a crimping face defined by a distal edge having a length in a range of 200 percent to 400 percent of a diameter of the orthodontic spring, a first lateral edge, and a second lateral edge, the edges defined by a radius of curvature in a range of 0.1 millimeters to 0.5 millimeters, a textured surface on at least one of the crimping faces to frictionally engage the coil of the orthodontic spring, and a pivot joint connecting the pivot sections of the pair of plier halves such that the handles can be manipulated to cause the crimping faces of the jaws to move together to crimp a coil of the orthodontic torquing spring to the arch wire.

Abstract: System, components and method for creating a set of dentures using the patient's mouth as an intra-oral articulator by use of an upper and/or lower disposable dental impression tray for creating the impression of the edentulous or partial edentulous mouth, the trays having a horizontal support bar and an upwardly extending short wall, with ridges, for mechanically accepting waxed backs of artificial teeth thereto. A screw with partial palatal tray can be secured through an aperture of the horizontal support bar and locked in place.

Abstract: An endodontic instrument (20) for drilling root a canal within a tooth. The instrument has a working area (21) that is arranged so as to form, shape and/or cut the inner wall of the root canal. The instrument has a plurality of flutes wound around a central axis in the form of a spiral, within a conical envelope (25) so as to have a cross-section that becomes narrower from a first end (23) to the second end (26) of the instrument. The working area (21) is sub-divided into adjacent segments (13) such that the flutes alternately have a straight section and a section that is twisted in the form of a spiral and are arranged, in such a way, that the edges of the flutes are located either on the conical envelope (25) or inside the envelope on the straight sections or on the twisted sections.

Abstract: An orthodontic bracket for coupling an archwire with a tooth. The orthodontic bracket including a ceramic injection molded (CIM) bracket body including an archwire slot that is configured to receive the archwire therein. The CIM bracket body including a polycrystalline ceramic. A coating of alumina or silicon dioxide is in continuous and direct contact with at least the surfaces of the archwire slot. The orthodontic bracket is characterized by unexpectedly high torque strength. The ceramic injection molded (CIM) bracket body may include a polycrystalline ceramic having a grain size distribution characterized by an average grain size in the range of larger than 3.4 ?m to about 6 ?m such that the orthodontic bracket is also characterized by unexpectedly high fracture toughness. A method of making the orthodontic bracket includes injection molding a bracket using a ceramic powder, sintering the molded bracket, and coating the ceramic injection molded bracket.

Abstract: A patient-specific bone implant has a porous body with a core material covered with tantalum. It is made with unique outer dimensions selected to match a specific patient.

Abstract: A dental diagnosis device has an occlusion sound detection member that detects occlusion sounds by teeth and an analysis member that analyzes the teeth occlusion based on detected occlusion sounds by the occlusion detection member. The occlusion detection member comprises a sucker shaped suction member that sticks to a tooth, a hollow passage connected to a through-hole installed in the suction member and it is operably controlled to appropriate negative pressure by which the suction member is adhered to a tooth, and a detection member connected to the suction member, which detects occlusion sound via the suction member.

Abstract: An implant can include a core having a head portion and a stem portion extending from the head portion. The stem portion can include an intermediate threaded section, a first porous section located along the stem portion, and a second porous section located along the stem portion, wherein the intermediate threaded section of the stem separates the first porous section from the second porous section.

Abstract: A method of manufacturing an orthodontic appliance may include molding a plurality of green bodies in plurality of molds and coupling the green bodies so as to form an intermediate green body. The orthodontic appliance may be an orthodontic bracket body. The plurality of green bodies may be molded so as to be devoid of any undercut formations. Coupling the plurality of green bodies may form the intermediate green body to include at least one undercut formation. An orthodontic bracket may include an undercut formation not capable of being formed in a single shot molding process and not formed through post-formation processes. The undercut formation may include a guiding track and/or a retaining recess configured to receive a portion of the ligating member. The ligating member may include a flexible ligating portion that overlies the archwire slot and a relatively rigid main body portion.

Abstract: A manual device, in particular for dental use, for dispensing a pasty filler, may reduce the viscosity of the filler by the introduction of vibrational energy. The device may include a device housing, a detachable container for the pasty filler that includes an outlet nozzle at a front end thereof, a vibration generator with an oscillating body, and pressure generating means for exerting pressure on the pasty filler, wherein the oscillating body is detachably connected to the container in a middle region thereof.

Abstract: A dental implant two-piece fixture mount has an implant fixture-mount base portion at its distal end and a snap-on, separate, separable top piece at its proximal end.

Abstract: An artificial teethridge has an arched top and an arched bottom. The top and the bottom of the artificial teethridge are curved toward the same direction. The thickness of the artificial teethridge is relatively thicker at central part and gradually becomes thinner toward two lateral sides. A fang is formed integrally on the top of the artificial teethridge. The artificial teethridge, the fang and a prosthesis are an integral structure, whereby the artificial teethridge, the fang and the prosthesis form a mechanical conduction structure. The bottom surface of the artificial teethridge has a complementary structure which can be tightly matched and fixed on each point of the top surface of the alveolar bone without any gap. A dental neck is formed integrally between the artificial teethridge and prosthesis, which is formed in a waisted shape that is narrower at middle section and gradually becomes wider toward to two terminal sections.

Abstract: The invention relates to a method for modification of a biocompatible component. The method of the invention includes the steps of a) providing a biocompatible component at least partly covered by metallic oxide; and b) treating at least a part of the component, which part is covered by the metallic oxide, with an aqueous composition that includes oxalic acid; whereby a modified metallic oxide, is obtained. The invention also relates to a biocompatible component-including a substrate having a surface with a) a microstructure including pits separated by plateus and/or ridges; and b) a primary nanostructure being superimposed on the microstructure, the primary nanostructure having depressions arranged in a wave-like formation.

Abstract: A retractor system with a closed loop control includes a retractor having one or more sensors, which measure parameters associated with a retracted tissue. The system further includes a positioning mechanism connected to the retractor and a controller which receives feedback signals from the sensors. Based on the feedback signals from the sensors, the retractor is actuated by the positioning mechanism so that the tissue can be retracted while maintaining the parameters associated with the retracted tissue above a threshold level or within a desired range. Another retractor system includes a retractor with a force sensor and at least one additional sensor, which can be used without a closed loop control arrangement.

Abstract: An orthodontic bracket for coupling an archwire with a tooth includes a bracket body, a hinge pin, and a latch. The bracket body includes a first surface configured to be mounted to the tooth and an archwire slot in a second surface. The hinge pin includes a first shaft portion coupled with the bracket body. The latch is coupled to the bracket body by a second shaft portion of the hinge pin. The latch is movable between an opened position and a closed position. A cross-sectional profile of the first shaft portion and/or the second shaft portion of the hinge pin is configured to elastically deform to impart a spring bias to the latch that opposes movement of the latch relative to the bracket body.

Abstract: The present invention refers to a system of prosthetic components consisting of Compensatory Slanted Copings and Abutments of Universal Coupling that function as a set of coupled parts that allow corrections of slants that vary between OQ and 60Q, of fixing osseointeg rated implants, including zygomatic fixations, and it provides a cap, molding transferer and screws for fastening and locking. This system of copings and abutments provides properties of conversion and extension of the implants. Its shape provides better occlusal stability and favorable biomechanics, since the forces are better distributed, diminishing the concentration of tension on the fitting platform of the implant, as well as the screws. The abutments of the universal coupling can be readjusted and be cemented or screwed. In the present system, the superior platform of the coping and the inferior base of the abutment are universalized, since the inferior platform of the coping corrects the slant of the implant.

Abstract: The guidance assembly is used for precise cleaning of interproximal spaces of teeth. The guidance assembly includes a base portion (30) for contacting the surfaces of teeth and gum region, adjacent the interproximal space, the base portion being approximately 12 mm in diameter to provide stable contact with the teeth and gum region. The guidance assembly also includes a tip portion (28) which extends forward of the base portion and includes an opening (31) through which the droplet spray is directed coincident with the plane of the interproximal space.

Abstract: An oral appliance is provided for delivering a medicament to at least a portion of teeth and/or soft tissue areas inside a mouth, the oral appliance comprising an interior surface having a porous material disposed on at least a portion of the interior surface of the oral appliance, the porous material containing a medicament and the interior surface being formed to fit contours of at least the portion of the teeth and/or soft tissue areas inside the mouth and being capable of supporting and holding the porous material in contact with at least the portion of the teeth and/or soft tissue areas inside the mouth to deliver the medicament.