IADR Abstract Archives

The Effect Of Clinical Microscope In Bioceramic Retreatment, "Experimental Study"

Objectives: The aim of this study was to assess the effect of the use of a dental operating microscope on the outcome of removing a novel bioceramic filling material and gutta-percha of uniradicular treated teeth with XPENDO© system and filled by the hydraulic condensation technique.
Methods: 40 human inferior incisors with single, curveless and medium-caliber canal were prepared by a single operator using XPENDO© System according to the manufacturer's suggested protocol (FKG): XPendo SHAPER file for mechanical preparation and XPendo FINISHER file for final irrigation activation of Sodium hipoclorite 5%, then filled by hydraulic condensation technique using gutta-percha and premix bioceramic TOTALFILL BC sealer© (FKG). Subsequently, the samples were randomly divided into 2 retreatment groups; 20 teeth with the aid of a dental operating microscope (OM) Zeiss Opmi Pico© and 20 teeth only by direct vision (DV).
A single operator removed the filling material with the same protocol, only differing in the use of a microscope: H hand files, solvent (Endosolv©), Sodium hipoclorite and XPENDO© System were used to remove filling material until clinically no residues remained.
Teeth were sectioned in two halves and photographed, the percentage of remaining obturation materials (sealer and / or guttapercha) measured by a morphometric analysis. Registered data of the intracanal surfaces of both groups were compared by a t-Welch test for two factors.
Results:
The filling remnants percentage in the (OM) group was 16.3% and in the (DV) group it was 29.4%, the difference was statistically significant (p=0.0198). Complete removal of sealer or gutta-percha was not observed in either group.
Conclusions: The use of a dental operating microscope improves the removal of filling materials such as bioceramic sealer and/or Gutta-percha during endodontic retreatment.

2020 Chilean Division Meeting (Virtual)

2020

Dental Materials 6: Instruments and Equipment
  • Antini, Carola  ( Pontificia Universidad Catolica de Chile , Santiago , Metropolitana , Chile )
  • Trejos, Paulina  ( Pontificia Universidad Catolica de Chile , Santiago , Metropolitana , Chile )
  • Retamal, Josefa  ( Pontificia Universidad Catolica de Chile , Macul , Región Metropolitana , Chile )
  • Palma, Ana Maria  ( Pontificia Universidad Catolica de Chile , Santiago , Metropolitana , Chile )
  • Osorio, Constanza  ( Pontificia Universidad Catolica de Chile , Santiago , Metropolitana , Chile )
  • NONE
    Oral Session
    Oral Session 2