Maillefer Instruments Holding Sarl

Dentsply Sirona Inc.

Dentsply Implants Nv

Fkg Dentaire Sarl

Paul-Henri Vallotton

Carl Van Lierde

Veerle Pattijn

Olivier Breguet

Gilbert Rota

Gianluca Rosato

Yann Winkel

An endodontic instrument that includes a tapered rod, the rod including an active portion and a distal end, the active portion defining an envelope having a longitudinal axis that coincides with an axis of rotation of the instrument.

Instrument for drilling dental root canals

An endodontic instrument comprising a tapered rod, the rod comprising an active portion, the active portion terminating at a distal tip end of the rod and defining a conical envelope, the conical envelope having a longitudinal axis that coincides with an axis of rotation of the instrument.

A three-dimensional computer model of the patient's tooth, including the pulp chamber and root canals, is created by combining at least one grey value image of the tooth and/or surface information about at least part of the intra-orally visible part of the tooth with a statistical, parameterized shape model of each tooth type (upper or lower incisors, canines, pre-molars, molars) as the patient's tooth to be treated. This allows for planning and/or simulation of one or more root canal treatments on the computer model of the patient's tooth and that the dentist or dental specialist is given qualitative and/or quantitative information by the system in order to aid in adequately analyzing the risks related to performing the root canal treatment with the proposed or user-selected endodontic tools.

Method and system for 3D root canal treatment planning

An instrument for drilling dental root canals includes a tapered rod having over at least a part of its length&#x2014;the active part&#x2014;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 center 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 center 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.

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.

Growing community of inventors

Pampigny, Switzerland

Paul-Henri Vallotton