Removal of Resin-based Root Canal Filling Materials with K3 Rotary Instruments : Relative Efficacy for Different Combinations of Filling Materials

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Author(s)

    • IIZUKA Naoyuki
    • Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Sciences, Niigata University Graduate School of Medical and Dental Sciences
    • TAKENAKA Shoji
    • Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Sciences, Niigata University Graduate School of Medical and Dental Sciences
    • SHIGETANI Yoshimi
    • Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Sciences, Niigata University Graduate School of Medical and Dental Sciences
    • OKIJI Takashi
    • Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Sciences, Niigata University Graduate School of Medical and Dental Sciences

Abstract

Removal of resin-based root canal filling materials may cause serious problems during root canal retreatment. This study compared the working time and amount of canal enlargement when different resin-based root canal filling materials were removed with K3 rotary instruments with or without heat-softening using System B. Root canal sealer/filling point combinations tested were Epiphany/Resilon, SuperBond/Resilon, SuperBond/gutta-percha, and Canals N/gutta-percha. The materials were filled into simulated curved resin canals and removed with K3 instruments in a standardized crown-down procedure. In terms of working time, Epiphany/Resilon required a significantly longer working time than the others. However, heat application with System B significantly reduced the working time for the removal of Epiphany/Resilon. In terms of canal enlargement, there were no significant differences among the tested groups as determined with digital morpho-metry. It was thus concluded that Epiphany removal with K3 rotary instruments might result in extended working time, but which could be reduced with heat-softening using System B.

Journal

  • Dental Materials Journal

    Dental Materials Journal 27(1), 75-80, 2008-01-01

    The Japanese Society for Dental Materials and Devices

References:  31

Cited by:  5

Codes

  • NII Article ID (NAID)
    110006570542
  • NII NACSIS-CAT ID (NCID)
    AA10443149
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    02874547
  • Data Source
    CJP  CJPref  NII-ELS  J-STAGE  NDL-Digital 
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