Patents Assigned to Societe de Recherches Techniques Dentaires-R.T.D.
  • Radio-opaque dental prosthetic member
    Patent number: 8039101
    Abstract: The invention relates to a prefabricated radio-opaque dental prosthetic member made of a composite material that comprises fibers embedded in a resin, said resin containing at least one radio-opaque component, characterized in that the radio-opaque component consists of nanoparticles having a size lower than 50 nm in order to transmit a portion or the totality of the wavelengths ranging from 400 to 600 nm of an incident radiation.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: October 18, 2011
    Assignee: Societe de Recherches Techniques Dentaires-R.T.D.
    Inventors: Pierre-Luc Reynaud, Manh-Quynh Chu
  • NOVEL RADIO-OPAQUE GLASS FIBRES AND DENTAL PROSTHETIC MEMBER CONTAINING SAID FIBRES
    Publication number: 20110045440
    Abstract: A glass thread adapted for reinforcing polymeric materials includes a plurality of filaments having a chemical composition that includes the following constituents within the limits defined below in weight percent: SiO2 40 to 60 Al2O3 0 to 5 CaO 1 to 15 MgO 1 to 15 BaO 2 to 15 SrO 12 to 20 ZnO 0.5 to 10 Na2O + K2O + Li2O 0 to 5 TiO2 3 to 20 Prosthetic members including such threads are also described.
    Type: Application
    Filed: August 28, 2008
    Publication date: February 24, 2011
    Applicant: Societe de Recherches Techniques Dentaires- R.T.D.
    Inventors: Anne Berthereau, Jerome Blaizot
  • RADIO-OPAQUE DENTAL PROSTHETIC MEMBER
    Publication number: 20100035214
    Abstract: The invention relates to a prefabricated radio-opaque dental prosthetic member made of a composite material that comprises fibres embedded in a resin, said resin containing at least one radio-opaque component, characterized in that the radio-opaque component consists of nanoparticles having a size lower than 50 nm in order to transmit a portion or the totality of the wavelengths ranging from 400 to 600 nm of an incident radiation.
    Type: Application
    Filed: January 18, 2008
    Publication date: February 11, 2010
    Applicant: Societe De Recherches Techniques Dentaires - R.T.D
    Inventors: Pierre-Luc Reynaud, Manh-Quynh Chu
  • Self-locking dental reinforcement
    Patent number: 5989032
    Abstract: Dental post to be fitted, particularly, within a dental cavity (3) comprises axial and longitudinal stiffening elements (7). At least a portion of the stiffening elements which is to be fixed within the cavity (3) comprises, at least at its periphery, a curable product (9) capable of yielding under an applied force so as to conform to the walls of the cavity in which it is located. The product is curable after being introduced into the cavity.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: November 23, 1999
    Assignee: Societe de Recherches Techniques Dentaires R.T.D.
    Inventors: Marc Reynaud, Pierre-Luc Reynaud, Manh Chu