Patents by Inventor Roberto Queiróz Martins Alcântara

Roberto Queiróz Martins Alcântara 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).

  • System for insertion into the root canal, method for obtaining a fastening element using said system and fastening element
    Patent number: 11864968
    Abstract: The present invention is related to the dentistry field. More precisely, the present invention relates to a system for insertion into the root canal for obtaining a root fastening element to support crowns comprising a sleeve of flexible and moldable material, non-adherent to the walls of the root canal, wherein the sleeve comprises a root section and a crown section which are filled with fibers in different arrangements. In addition, the present invention is related to a method for obtaining a fastening element using the system and root fastening element to support crowns.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: January 9, 2024
    Assignee: ANGELUS INDUSTRIA DE PRODUTOS ODONTOLOGICOS S/A
    Inventors: Roberto Queiróz Martins Alcântara, Guilherme Guedes Moreno, Eduardo Lima Costa
  • SYSTEM FOR INSERTION INTO THE ROOT CANAL, METHOD FOR OBTAINING A FASTENING ELEMENT USING SAID SYSTEM AND FASTENING ELEMENT
    Publication number: 20220054229
    Abstract: The present invention is related to the dentistry field. More precisely, the present invention relates to a system for insertion into the root canal for obtaining a root fastening element to support crowns comprising a sleeve of flexible and moldable material, non-adherent to the walls of the root canal, wherein the sleeve comprises a root section and a crown section which are filled with fibers in different arrangements. In addition, the present invention is related to a method for obtaining a fastening element using the system and root fastening element to support crowns.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 24, 2022
    Inventors: ROBERTO QUEIRÓZ MARTINS ALCÂNTARA, GUILHERME GUEDES MORENO, EDUARDO LIMA COSTA
  • INJECTION SYSTEMS IN THE RADICULAR CANAL SYSTEM AND USE THEREOF
    Publication number: 20210267715
    Abstract: A system for injection of endodontic cement into the radicular canal system comprising a closed-end cannula and at least one side orifice. Also disclosed are a system comprising a sleeve to be positioned between the cannula and the tooth, for injection of intra-radicular material, obliterating the aperture of the dental canal, a system comprising a moldable tip for a closed-end intra-radicular material injection cannula, and the use of the injection systems for the injection of endodontic cement.
    Type: Application
    Filed: August 10, 2018
    Publication date: September 2, 2021
    Inventor: ROBERTO QUEIRÓZ MARTINS ALCÂNTARA
  • FASTENING ELEMENT AND SYSTEM FOR INTRODUCTION IN THE TOOTH CANAL AND USE OF THE FASTENING ELEMENT FOR INTRODUCTION IN THE TOOTH CANAL
    Publication number: 20200345467
    Abstract: Fastening element and system for introduction in the canals of teeth to be treated, being used alone or together with a prefabricated intra-radicular pin serving as a root reinforcement or an anchorage of prostheses to be installed on the tooth, said fastening element comprises:—a body of parallel or conical shape;—a parallel or tapered longitudinal through bore; and—a main longitudinal slot running from the upper end to the lower end of the body of the fastening element.
    Type: Application
    Filed: August 17, 2018
    Publication date: November 5, 2020
    Inventor: Roberto Queiróz Martins ALCÂNTARA
  • Dental composition comprising a calcium source
    Patent number: 8835527
    Abstract: The present invention relates to cements useful in dental applications, and more particularly to dental compositions which may release calcium ions, which may comprise at least one of salicylic acid ester derivative and a calcium source. The present invention further relates to the use of at least one of salicylic acid ester derivative and a calcium source for producing a dental composition, having biological properties and which may release calcium ions for use in dental procedures of intermediate restorations and channel filling.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: September 16, 2014
    Assignee: Angelus Industria de Produtos Odontologicos S/A
    Inventors: Fabrício Aulo Ogliari, Evandro Piva, Valdemir dos Santos, Roberto Queiróz Martins Alcântara, César Eduardo Bellinati
  • Dental Composition Comprising A Calcium Source
    Publication number: 20130023601
    Abstract: The present invention relates to cements useful in dental applications, and more particularly to dental compositions which may release calcium ions, which may comprise at least one of salicylic acid ester derivative and a calcium source. The present invention further relates to the use of at least one of salicylic acid ester derivative and a calcium source for producing a dental composition, having biological properties and which may release calcium ions for use in dental procedures of intermediate restorations and channel filling.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 24, 2013
    Inventors: Fabrício Aulo Ogliari, Evandro Piva, Valdemir dos Santos, Roberto Queiróz Martins Alcântara, César Eduardo Bellinati