Patents by Inventor Paul-Henri Vallotton
Paul-Henri Vallotton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230200936Abstract: The present invention relates to an endodontic instrument comprising a working segment (11) having a working section (110) and terminating in a distal portion (12) having a guiding and cutting function. The distal portion comprises a rounded guide head (13) and an angular cutting section (14). The angular cutting section comprises a distal zone (16) adjacent to the guide head and a proximal zone (17) between the distal zone and the working segment. The angular cutting section (14) further comprises cutting edges (15) extending over the full length of the proximal and distal zones. The distal zone comprises a distal section (160) with constant geometry and the proximal zone comprises a proximal section (170) the geometry of which varies between the distal section and the working section (110).Type: ApplicationFiled: May 26, 2021Publication date: June 29, 2023Inventors: Gianluca ROSATO, Yann WINKEL, Paul-Henri VALLOTTON, Olivier BREGUET
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Patent number: 11523880Abstract: 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.Type: GrantFiled: January 28, 2021Date of Patent: December 13, 2022Assignee: DENTSPLY SIRONA INC.Inventors: Gilbert Rota, Paul-Henri Vallotton
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Publication number: 20210145540Abstract: 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.Type: ApplicationFiled: January 28, 2021Publication date: May 20, 2021Applicant: DENTSPLY SIRONA Inc.Inventors: Gilbert ROTA, Paul-Henri VALLOTTON
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Patent number: 10932884Abstract: 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.Type: GrantFiled: October 17, 2018Date of Patent: March 2, 2021Assignee: DENTSPLY SIRONA INC.Inventors: Gilbert Rota, Paul-Henri Vallotton
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Patent number: 10629309Abstract: 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.Type: GrantFiled: September 22, 2017Date of Patent: April 21, 2020Assignees: MAILLEFER INSTRUMENTS HOLDING SARL, DENTSPLY IMPLANTS NVInventors: Carl Van Lierde, Veerle Pattijn, Paul-Henri Vallotton
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Publication number: 20190046291Abstract: 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.Type: ApplicationFiled: October 17, 2018Publication date: February 14, 2019Applicant: DENTSPLY SIRONA Inc.Inventors: Gilbert ROTA, Paul-Henri VALLOTTON
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Patent number: 10123850Abstract: 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.Type: GrantFiled: September 21, 2017Date of Patent: November 13, 2018Assignee: DENTSPLY SIRONA Inc.Inventors: Gilbert Rota, Paul-Henri Vallotton
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Publication number: 20180075210Abstract: 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.Type: ApplicationFiled: September 22, 2017Publication date: March 15, 2018Inventors: Carl VAN LIERDE, Veerle PATTIJN, Paul-Henri VALLOTTON
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Publication number: 20180008374Abstract: 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.Type: ApplicationFiled: September 21, 2017Publication date: January 11, 2018Applicant: DENTSPLY SIRONA Inc.Inventors: Gilbert Rota, Paul-Henri Vallotton
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Patent number: 9805167Abstract: 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.Type: GrantFiled: August 27, 2012Date of Patent: October 31, 2017Assignees: DENTSPLY IMPLANTS NV, MAILLEFER INSTRUMENTS HOLDING SARLInventors: Carl Van Lierde, Veerle Pattijn, Paul-Henri Vallotton
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Patent number: 9801696Abstract: 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 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.Type: GrantFiled: June 7, 2013Date of Patent: October 31, 2017Assignee: MAILLEFER INSTRUMENTS HOLDING SÁRLInventors: Gilbert Rota, Paul-Henri Vallotton
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Publication number: 20150320517Abstract: 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.Type: ApplicationFiled: June 7, 2013Publication date: November 12, 2015Inventors: Gilbert ROTA, Paul-Henri VALLOTTON
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Patent number: 9113980Abstract: 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.Type: GrantFiled: February 12, 2011Date of Patent: August 25, 2015Assignee: MAILLEFER INSTRUMENTS HOLDING SARLInventors: Gilbert Rota, Paul-Henri Vallotton
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Publication number: 20140229145Abstract: 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.Type: ApplicationFiled: August 27, 2012Publication date: August 14, 2014Inventors: Carl Van Lierde, Veerle Pattijn, Paul-Henri Vallotton
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Publication number: 20130244200Abstract: 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.Type: ApplicationFiled: February 12, 2011Publication date: September 19, 2013Applicant: MAILLEFER INSTRUMENTS HOLDING SARLInventors: Gilbert Rota, Paul-Henri Vallotton
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Publication number: 20130171580Abstract: A method and system are described for 3D digital endodontics characterized in that 3D imaging equipment such as a CT or MRI scanner, ultrasound or the like are used to digitize the infected tooth or teeth, a 3D representation of the root canal system is extracted from the image data and visualized on a computer screen, a surgical template is designed to guide the endodontic instruments to localize the root canal(s) intra-operatively and said guide is manufactured by means of a computer driven system (e.g. milling, rapid prototyping, etc.).Type: ApplicationFiled: February 18, 2011Publication date: July 4, 2013Applicants: Maillefer Instruments Holding SARL, Materialise Dental NVInventors: Carl Van Lierde, Paul-Henri Vallotton