Anthogyr

Hervé Richard

Cédric Lancieux

Alexis Dupasquier

Eric Geneve

Johan Bejeannin

Benoît Blum

Anne-Lise Chopard-Lallier

Stefano Lisci

A dental implant includes an implant body extending along a longitudinal axis between a crown end and an apical end, the implant body having a core along which a helical thread extends with at least one thread, the core being tapered towards the apical end on at least one section of the length of the dental implant. At least two tapping grooves are arranged in the thread. The grooves interrupt the thread, so that the thread includes a series of consecutive thread arcs. Each thread arc has an apical surface oriented towards the apical end of the dental implant, and a crown surface oriented towards the crown end of the dental implant. A peripheral lateral surface connects the apical surface and the crown surface of the thread arc. In at least one section of the dental implant in which the core is tapered, at least one thread arc has a radial offset.

Self-tapping dental implant

A dental implant includes an implant body extending along a longitudinal axis between a coronal end and an apical end, the implant body having a core along which a helical threading having at least one thread extends. The dental implant includes at least one section in which the threading has a height which gradually decreases in the direction of the coronal end and in which the core is tapered in the direction of the apical end, the thread including an apical surface facing the apical end of the dental implant, a coronal surface facing the coronal end of the dental implant, and a peripheral lateral surface connecting the apical surface and the coronal surface of the thread. The apical surface of the thread has, in a cross-sectional view along the longitudinal axis, a first profile repeating according to an apical pitch. The coronal surface of the thread has, in a cross-sectional view along the longitudinal axis, a second profile repeating according to a coronal pitch. In one section, the apical pitch is greater than the coronal pitch.

Dental implant with improved threading

A substantially tubular intermediate attachment part with a first through-hole for attaching a screw-retained dental prosthetic component or a dental tool to a dental implant or to a dental implant analog, extending along a first longitudinal axis between a first end and a second end. Each end is provided with a set of longitudinal fins intended for snap-fitting into the dental prosthetic component or into the dental tool on the one hand and into the dental implant on the other hand.

Intermediate attachment part

A set of components for dental prosthetic restoration includes a ceramic dental implant having an internal connecting receiving space. An internally threaded insert is added into the internal connecting receiving space of the dental implant, and rotatably indexed. It is held by a fixing part forming an axial abutment opposing an extraction of the internally threaded insert out of the inner connection receiving space.

Set of components for dental prosthetic restoration

A kit () for preparing a dental prosthesis, having a master model () manufactured by means of an additive technology using an arrangement of material in successive layers (), such as 3D printing, and having a fixing screw () with an outer thread () intended to removably fix a dental prosthesis element on the master model (). The master model () has at least one reference surface intended to receive the dental prosthesis element bearing thereon, said reference surface being produced during the manufacture of the master model () by additive technology. The master model () has at least one threaded, cavity (), of which the inner thread (), intended to receive said fixing screw () by screwing, is produced during the manufacture of the master model () by additive technology. The outer thread () of the fixing screw (A) has a pitch (P) greater than or equal to 10 times the thickness (E) of the layers (), and it has a thread height (H) greater than or equal to 5 times the thickness (E) of the layers ().

Kit for preparing a dental prosthesis

Dental component for the individual prosthetic reconstruction of a tooth, intended to be received on a dental implant, including a first element with an angled through-passage, and a second element intended to be received against or in a dental implant. Assembly features between the first and second elements make it possible effectively to limit the removal of material to be performed in the first element in order to create the angled through-passage.

Dental component for the individual prosthetic reconstruction of a tooth

Assembly including a component and a one-piece axial limit stop device intended to be placed in a bore of said component in order to retain an element therein, including an annular ring with symmetry of revolution about a central axis (I-I), and including at least one angular portion rigidly connected to the annular ring, developing in an arc between a first end, joined to the distal end of the annular ring, and a second, free end. The angular portion is in part movable from its first end, in a transverse plane perpendicular to the central axis (I-I), between a retracted position and at least one protruding position, being elastically returned permanently to the protruding position. In the retracted position, the angular portion is included within the volume of a cylinder continuing the outer cylindrical surface of the annular ring. In the protruding position, the free end of the angular portion extends radially beyond the volume of the cylinder continuing the outer cylindrical surface of the annular ring. The component bore has a specific inner geometry allowing the axial limit stop device to be easily attached and reliably fixed, while at the same time allowing easy detachment and extraction of the axial limit stop device in order to permit the removal of the element in the event of the latter sustaining damage.

Assembly comprising a component and an axial limit stop device intended to be placed in a bore of said component

Transfixed multiple dental prosthesis intended to be attached and fixed to a plurality of dental implants by several transfixing screws, each having a shank with a threaded portion intended to be received by screwing in a respective dental implant. Each transfixing screw is held captive in a respective bore formed in the transfixed multiple dental prosthesis and extending along a respective axial direction. Each transfixing screw is movable in rotation about the axial direction of the respective bore and is movable in translation along the axial direction of the respective bore between a retracted position and at least one screwing position. In the retracted position, the threading of the threaded portion of the transfixing screw does not protrude from the bore.

Transfixed multiple dental prosthesis

Dental prosthetic assembly () comprising a dental implant () and a transfixed dental prosthesis (). A connecting device () comprises: The radial wings () and the protuberances () are configured and dimensioned in such a way as to cooperate by rotation of the lock () in order to keep the dental prosthesis () transfixed on the dental implant (), and in such a way as to allow the lock () and its radial wings () to penetrate into the retention cavity () by a simple movement of axial translation.

Dental prosthetic assembly comprising a dental implant and a transfixed dental prosthesis

A dental handpiece () includes a head () suitable for driving a tool, a body () having a proximal section () extending in a longitudinal direction (I-I) and intended to be connected, by a proximal end surface (), to a distal surface of a drive motor, an indexing device () suitable for rotatably positioning the body () of the dental handpiece () about the longitudinal direction (I-I) relative to the drive motor, an electric device () for lighting the working area of the tool, and a device () for supplying electric power to the electric lighting device (). The indexing device () is retractable or set back from the proximal end surface (), and the electric supply device () includes a retractable electrical connection device ().

Handpiece having an electrical connection means

A device for centering and guiding at least one drill bit of a dental handpiece when drilling a hole in the jaw of a patient in cooperation with a surgical guide equipped with a tubular drill bushing. A support holds a tubular guide sleeve permanently in a coaxial and sliding position with respect to the drill bit. The tubular guide sleeve is able to engage with slight play in the tubular drill bushing. The support insures the engagement of the guide sleeve in the tubular drill bushing at the latest when the drill bit starts to drill in the patient's jaw, thus insuring the centering and guiding of the drill bit.

Device for centering and guiding a drill bit of a dental handpiece

A dental handpiece carries a drill and drives it in relative motion in a direction of penetration. The handpiece includes a body with a proximal end and a distal end, a removable head connected to the body's distal end, able to hold the drill, abutment means fixed on the dental handpiece by fixation means and able to limit the depth of penetration of the drill in the body of a patient. The abutment means, protruding from the dental handpiece, are fixed and locked on the dental handpiece by locking means which are actuated by the simple movement of joining the head to the body.

Dental handpiece with abutment device

The bone recovery device of the invention comprises an axial main body with an axial cavity passing through it, a front connector incorporating an axial passage and adapted to be fixed to the main body, a filter with a tubular filtering wall adapted to be fitted into the main body, and a scraper piston that slides inside the filter. The scraper piston blocks the end of the filter, and a radial outlet is provided in the axial main body, with an annular cavity left free around the filter between the filter and the axial main body. A canula is inserted into the distal end of the filter. The recovery device may therefore be used to recover bone retained by the filter during aspiration through the canula by the radial outlet, and bone fragments may be extracted by sliding the piston and withdrawing the canula. The recovery device may therefore be used several times without demounting it.

Bone recovery device

A dental handpiece is provided including a neck wherein balls are guided in transverse channels of an input shaft and are radially spaced apart by a support piece including a tapered part thrust by a spring. A linking ring is mounted on the end of the input shaft and includes internal longitudinal grooves circular in cross-section and of variable depth along the longitudinal direction. The linking ring is mounted sliding and locked in rotation on an output shaft. Under the action of a resisting torque applied by the tool to the output shaft greater than a predetermined threshold, the linking balls are subjected to a reaction from the internal grooves of the linking ring which tends to bring them closer together, countering the spring. The balls are then released, producing a disengagement which limits the transmitted torque and prevents the tool engaged in the tool-bearing shaft from breaking.

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Notre Dame de Bellecombe, France

Hervé Richard