Abstract: A dental preform comprises a central portion formed by a plurality of first wire-like elements extending mostly in a first direction, and a first resin. An annular peripheral portion passes round the central portion perpendicularly to the first direction. The peripheral portion comprises second wire-like elements and a second resin. The peripheral portion comprises a plurality of layers arranged on one another perpendicularly to the first direction. Each layer has at least one turn formed by at least one of the second wire-like elements, the at least one second wire-like element presenting a longitudinal direction that is offset with respect to the first direction by an angle comprised between 10° and 80° or between 100° and 170°. The second wire-like elements of two consecutive layers present opposite orientations.

Abstract: A data set representative of a dental part to be fabricated is provided. The data set defines dimensional and mechanical characteristics of the dental part. First and second patterns are made by 3D printing. A first set of fibres is deposited on a top surface of the first pattern before the second pattern is deposited. The first set of fibres includes a plurality of first fibres oriented in a first set of directions by means of the data set. A second set of fibres is deposited on a top surface of the second pattern. The second set of fibres includes a plurality of second fibres oriented in a second set of directions defined by means of the data set. A third pattern is made from a third resin by 3D printing by means of the data set.

Abstract: A crown and root dental restoration includes a prosthesis having at least one through canal having one end opening into at least one root canal and opening into an outer face of the restoration, the through canal forming with the root canal a cavity extending along a first direction; reinforcement pins arranged in the root canal and the through canal, at least one reinforcement pin connecting the through canal with the root canal, the reinforcement pins having a length smaller than a total height of the through canal and a dental root; and a glue filling the root canal and the through canal, the glue contacting sidewalls of the through canal, sidewalls of the root canal, and sidewalls of each reinforcement pin.

Abstract: A reinforcement structure for a crown and root tooth restoration includes: a plurality of reinforcement pins having diameters ranging from 0.1 mm to 0.5 mm, an etching canal facilitating access to an infected apex, in the crown and root restoration, a joining element configured to group the plurality of reinforcement pins together so as to form a bundle of pins, the joining element partially covering the length of the reinforcement pins.

Abstract: A data set representative of a dental part to be fabricated is provided. The data set defines dimensional and mechanical characteristics of the dental part. First and second patterns are made by 3D printing. A first set of fibres is deposited on a top surface of the first pattern before the second pattern is deposited. The first set of fibres includes a plurality of first fibres oriented in a first set of directions by means of the data set. A second set of fibres is deposited on a top surface of the second pattern. The second set of fibres includes a plurality of second fibres oriented in a second set of directions defined by means of the data set. A third pattern is made from a third resin by 3D printing by means of the data set.

Abstract: A reinforcement structure for a crown and root tooth restoration includes: a plurality of reinforcement pins having diameters ranging from 0.1 mm to 0.5 mm, an etching canal facilitating access to an infected apex, in the crown and root restoration, a joining element configured to group the plurality of reinforcement pins together so as to form a bundle of pins, the joining element partially covering the length of the reinforcement pins.

Abstract: A method for performing crown and root restoration on a laboratory model that includes making an impression of the pulp chamber to form the crown part of the restoration, at least one stopped root canal opening into the pulp chamber, producing a prosthesis from the impression, the prosthesis includes at least one through canal, having an end opening onto the one root canal, unstopping the root canal, filling the root canal and the through canal with a glue, fitting the prosthesis so that the one through canal opens onto the one unstopped root canal, and inserting a plurality of reinforcement pins in the one root canal through the one through canal, the one through canal and the one root canal being filled by the plurality of reinforcement pins and the glue.

Abstract: A structured reinforcement for a coronal-radicular dental reconstitution comprising: a plurality of pins having diameters ranging from 0.1 mm to 0.5 mm, an assembly part configured to group the plurality of pins so as to form a bundle of pins, said assembly part partially covering the length of the pins so that each pin presents a free end mobile in flexion with respect to the other pins of the bundle of pins.

Abstract: A structured reinforcement for a coronal-radicular dental reconstitution comprising: a plurality of pins having diameters ranging from 0.1 mm to 0.5 mm, an assembly part configured to group the plurality of pins so as to form a bundle of pins, said assembly part partially covering the length of the pins so that each pin presents a free end mobile in flexion with respect to the other pins of the bundle of pins.

Abstract: A dental bridge armature designed to be screw-fastened onto dental implants, the dental bridge armature having reinforcing elements formed by long fibers pre-impregnated with photo-polymerizable resin which are either woven or in bundles. The reinforcing elements are in the form of a fibrous framework including a main brace and base reinforcing elements wound around a series of implant abutments screwed onto the implants. Secondary braces are also wound around the main brace and the base reinforcing elements. The braces form an angle between 15° and 85° with the base reinforcing elements. The armature is then included in a PMMA coating resin by a pressing or injection technique.

Abstract: A preform made of composite material designed to be formed on a laboratory model and to be integrated in a base plate of a dental prosthesis. The preform comprises a grid formed by a meshing of weft threads and warp threads coated in an impregnating resin, the space between the meshes being exempt of fibers and resin, and determining a surface of free spaces of more than 25% of the total surface of the grid. The weft threads are fixed onto the warp threads at the nodes of the meshing to enable the preform to be handled and to be formed on a laboratory model, without the impregnating resin creeping into the spaces of the meshes.

Abstract: The invention relates to a tubular dental reinforcement preform formed by a cord made from woven fibres. The cord is impregnated and filled by a polymerizable resin and is able, by isostatic crushing, to take the shape of a strip without breaking of the woven fibres constituting the cord, the polymerizable resin being able to creep through the cord to form two lateral parts. The invention also relates to a production method of a dental contention strip from such a tubular reinforcement preform.

Abstract: A dental bridge armature designed to be screw-fastened onto dental implants and including reinforcing elements formed by long fibres pre-impregnated with photo-polymerizable resin which are either woven or in bundles. The reinforcing elements are in the form of a fibrous framework including a main brace and base reinforcing elements wound around a series of implant abutments screwed onto the implants. Secondary braces are also wound around the main brace and the base reinforcing elements. The braces form an angle included between 15° and 85° with the base reinforcing elements. The armature is then included in a PMMA coating resin by a pressing or injection technique.

Abstract: A preform made of composite material designed to be formed on a laboratory model and to be integrated in a base plate of a dental prosthesis. The preform comprises a grid formed by a meshing of weft threads and warp threads coated in an impregnating resin, the space between the meshes being exempt of fibers and resin, and determining a surface of free spaces of more than 25% of the total surface of the grid. The weft threads are fixed onto the warp threads at the nodes of the meshing to enable the preform to be handled and to be formed on a laboratory model, without the impregnating resin creeping into the spaces of the meshes.

Abstract: A frame for a removable dental prosthesis has a base part having a layer of woven fabrics of a composite material, which is arranged as a support shell in the form of an arch designed to cover at least a part of the patient's jaw. An intermediate part extends along the top of the base part to form a beam having a good crushing strength, and forming the limits of the section of the frame. A surface part forms a cap totally covering the base part and intermediate part, the material of the cap being formed by a laminated fiber reinforcement material having an organic matrix of the same nature as that of the base part. The assembly, made up of the base part, the intermediate part and the surface part form, after shaping and polymerization, a self-supporting profiled part having a good breaking resistance.

Abstract: The invention concerns an insert for filling the dental canal comprising means for anatomically and physiologically filling up the root canal 1, comprising a ductile and resilient core 10 made of a polymerised composite material, sheathed in one or several sleeves 14, 15 made of a composite material pre-impregnated with resin, being in a first pasty state previous to polymerisation so as to make the insert flexible and malleable before and during its introduction into the root canal 1. Said material is then polymerized at will by cross-linking means to be in a second polymerized state after the insert has been introduced in said canal. The upper part 17 of the insert which emerges from the root canal 1, can advantageously be used as prop or pivot for a coronal reconstitution. Thus, the same material is used for filling the root canal and for reinforcing the residual structures of the tooth. The canal obturator and the anchoring pivot are made of one and the same material.

Abstract: The invention relates to a dental prosthesis comprising a support shell intended to cover a stump and an external finish coating covering the support shell, the prosthesis being characterized in that the support shell is comprised of a composite material and in that the coating is comprised of at least one layer having at least one component of the same nature as at least one component of the composite material matrix of the shell. The invention also relates to a piece of matrix fabric preimpregnated before cross-linking for the manufacture of the shell, as well as to a method and a machine for manufacturing the dental prosthesis according to the invention.

Abstract: A fabric part preimpregnated with a matrix before hardening designed to form, after shaping, hardening and depositing of an external finishing coating, a support shell of a dental prosthesis. The matrix has at least one component of the same nature as at least one component of the coating.

Abstract: A machine for implementation of a method for making a dental prothesis. The machine has a tight enclosure, a plate for receiving a shaping model in the enclosure, a flexible fluid-proof membrane separating the enclosure into two chambers, a device (means) for creating a lower fluid pressure in one of the two chambers, and a device (means) for cross-linking parts placed on the shaping model.

Abstract: The invention relates to a dental prosthesis comprising a support shell (2) intended to cover a stump (1) and an external finish coating (3) covering the support shell (2), the prosthesis being characterized in that the support shell (2) is comprised of a composite material and in that the coating (3) is comprised of at least one layer having at least one component of the same nature as at least one component of the composite material matrix of the shell (2). The invention also relates to a piece of matrix fabric preimpregnated before cross-linking for the manufacture of the shell (2), as well as to a method and a machine for manufacturing the dental prothesis according to the invention.