Journal of Dentistry
Volume 34, Issue 10 , Pages 784-789, November 2006

The physical characterization of a thermoplastic polymer for endodontic obturation

  • Amal Elzubair

      Affiliations

    • Biomaterials Laboratory, Instituto Militar de Engenharia, Pr Gen Tibúrcio 80, Praia Vermelha, 22290 270 Rio de Janeiro, RJ, Brazil
    • ,
  • Carlos Nelson Elias

      Affiliations

    • Biomaterials Laboratory, Instituto Militar de Engenharia, Pr Gen Tibúrcio 80, Praia Vermelha, 22290 270 Rio de Janeiro, RJ, Brazil
    • Corresponding Author InformationCorresponding author. Tel.: +55 21 25467244; fax: +55 21 25467244.
    • ,
  • João Carlos Miguez Suarez

      Affiliations

    • Biomaterials Laboratory, Instituto Militar de Engenharia, Pr Gen Tibúrcio 80, Praia Vermelha, 22290 270 Rio de Janeiro, RJ, Brazil
    • ,
  • Hélio Pereira Lopes

      Affiliations

    • Endodontic Department at Universidade Estácio de Sá, Rio de Janeiro, RJ, Brazil
    • ,
  • Márcia Valéria B. Vieira

      Affiliations

    • Endodontic Brazilian Association, Rio de Janeiro, RJ, Brazil

Received 14 January 2006; received in revised form 2 March 2006; accepted 6 March 2006.

Abstract 

Objective

To analyze a new endodontic sealer material commercially known as Resilon™ and to describe in detail the experimental techniques employed that lead to the identification of the composite material.

Methods

An extensive structural, thermal, and physical characterization was used to identify a new endodontic sealer material using the following techniques: Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR) analysis, X-ray fluorescence spectrometry (XRF) technique, X-ray diffraction (XRD) measurement, thermo-gravimetric analysis (TGA) and a differential scanning calorimeter (DSC). The surface morphology was analyzed using a scanning electron microscope (SEM).

Results

The material was identified as a composite of polycaprolactone, which is a polymer of the polyester family and bioactive glass, which is radiopaque filler.

Conclusions

The Resilon™ sealer material is a thermoplastic synthetic degradable polymer (polycaprolactone), it contains bioactive glass. Its properties, such as strength, modulus, shape-memory effect and biodegradability depend on the crystalline fraction, which is affected in turn by conditions of crystallization. Investigation of the crystallization kinetics of PCL is of practical significance. It is especially necessary to study its the dynamic and non-isothermal crystallization process.

Keywords: Resilon™, Endodontic sealer, Root canal, Canal filling, Canal therapy, Thermoplastic polymer, Obturation, Polycaprolactone, Radiopaque fillers

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PII: S0300-5712(06)00063-7

doi:10.1016/j.jdent.2006.03.002

Journal of Dentistry
Volume 34, Issue 10 , Pages 784-789, November 2006

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