The Experts below are selected from a list of 16848 Experts worldwide ranked by ideXlab platform

Tom G. Gound - One of the best experts on this subject based on the ideXlab platform.

  • Resorcinol-Formaldehyde Resin "Russian Red" endodontic therapy.
    Journal of endodontics, 2003
    Co-Authors: Nathan W. Schwandt, Tom G. Gound
    Abstract:

    Resorcinol-Formaldehyde Resin is a material used in endodontic therapy in many foreign countries. With immigration to the United States increasing, American dentists need to become familiar with resorcinol-Formaldehyde therapy. It contains two potentially toxic components, Formaldehyde (liquid) and resorcinol (powder). Zinc oxide or barium sulfate may be used for radiopacity. When 10% sodium hydroxide is added to the mixture, polymerization occurs, which can form a brick-hard red material that has no known solvent. Several variations in technique exist. The catalyst can be mixed in before insertion into the tooth, added after the mixture is inserted, or not used. Providers believe pulp tissue will be fixed and bacteria destroyed apical to the level of resorcinol-Formaldehyde Resin placement. Canals are frequently not instrumented or obturated to their full length. Few success-failure studies have been published and results are contradictory. Consequently, providers have little guidance regarding when to retreat or for predicting the difficulty of retreatment.

Jungang Gao - One of the best experts on this subject based on the ideXlab platform.

  • Structure and properties of boron-containing bisphenol-A Formaldehyde Resin
    European Polymer Journal, 2001
    Co-Authors: Jungang Gao, Yanfang Liu, Fengli Wang
    Abstract:

    Abstract The boron-containing bisphenol-A Formaldehyde Resin from bisphenol-A, Formaldehyde and boric acid was synthesized. The mechanism of synthesis and curing reaction were investigated by infrared spectroscopy and chemical analysis method. The kinetics of thermal degradation and thermal stability were determined by thermal analysis. The results show that the Resin has higher heat resistant property and oxidative resistance than common phenol–Formaldehyde Resin. In addition, the fiberglass-reinforced laminate has good mechanical and electric properties.

  • Thermal stability of boron-containing phenol Formaldehyde Resin
    Polymer Degradation and Stability, 1999
    Co-Authors: Jungang Gao, Yanfang Liu, Liting Yang
    Abstract:

    The boron-containing phenol-Formaldehyde Resin derived from phenol, Formaldehyde and boric acid was synthesized. The mechanisms of synthesis and curing reactions were investigated by infrared spectroscopy and chemical analysis. The kinetics of thermal degradation and thermal stability were determined by thermal analysis. The results show that the Resin has higher heat oxidation resistance than common phenol-Formaldehyde Resins. In addition, the fiberglass-reinforced laminate has good mechanical and electric properties.

Nathan W. Schwandt - One of the best experts on this subject based on the ideXlab platform.

  • Resorcinol-Formaldehyde Resin "Russian Red" endodontic therapy.
    Journal of endodontics, 2003
    Co-Authors: Nathan W. Schwandt, Tom G. Gound
    Abstract:

    Resorcinol-Formaldehyde Resin is a material used in endodontic therapy in many foreign countries. With immigration to the United States increasing, American dentists need to become familiar with resorcinol-Formaldehyde therapy. It contains two potentially toxic components, Formaldehyde (liquid) and resorcinol (powder). Zinc oxide or barium sulfate may be used for radiopacity. When 10% sodium hydroxide is added to the mixture, polymerization occurs, which can form a brick-hard red material that has no known solvent. Several variations in technique exist. The catalyst can be mixed in before insertion into the tooth, added after the mixture is inserted, or not used. Providers believe pulp tissue will be fixed and bacteria destroyed apical to the level of resorcinol-Formaldehyde Resin placement. Canals are frequently not instrumented or obturated to their full length. Few success-failure studies have been published and results are contradictory. Consequently, providers have little guidance regarding when to retreat or for predicting the difficulty of retreatment.

Liting Yang - One of the best experts on this subject based on the ideXlab platform.

  • Thermal stability of boron-containing phenol Formaldehyde Resin
    Polymer Degradation and Stability, 1999
    Co-Authors: Jungang Gao, Yanfang Liu, Liting Yang
    Abstract:

    The boron-containing phenol-Formaldehyde Resin derived from phenol, Formaldehyde and boric acid was synthesized. The mechanisms of synthesis and curing reactions were investigated by infrared spectroscopy and chemical analysis. The kinetics of thermal degradation and thermal stability were determined by thermal analysis. The results show that the Resin has higher heat oxidation resistance than common phenol-Formaldehyde Resins. In addition, the fiberglass-reinforced laminate has good mechanical and electric properties.

Yanfang Liu - One of the best experts on this subject based on the ideXlab platform.

  • Structure and properties of boron-containing bisphenol-A Formaldehyde Resin
    European Polymer Journal, 2001
    Co-Authors: Jungang Gao, Yanfang Liu, Fengli Wang
    Abstract:

    Abstract The boron-containing bisphenol-A Formaldehyde Resin from bisphenol-A, Formaldehyde and boric acid was synthesized. The mechanism of synthesis and curing reaction were investigated by infrared spectroscopy and chemical analysis method. The kinetics of thermal degradation and thermal stability were determined by thermal analysis. The results show that the Resin has higher heat resistant property and oxidative resistance than common phenol–Formaldehyde Resin. In addition, the fiberglass-reinforced laminate has good mechanical and electric properties.

  • Thermal stability of boron-containing phenol Formaldehyde Resin
    Polymer Degradation and Stability, 1999
    Co-Authors: Jungang Gao, Yanfang Liu, Liting Yang
    Abstract:

    The boron-containing phenol-Formaldehyde Resin derived from phenol, Formaldehyde and boric acid was synthesized. The mechanisms of synthesis and curing reactions were investigated by infrared spectroscopy and chemical analysis. The kinetics of thermal degradation and thermal stability were determined by thermal analysis. The results show that the Resin has higher heat oxidation resistance than common phenol-Formaldehyde Resins. In addition, the fiberglass-reinforced laminate has good mechanical and electric properties.