Research abstract
British Dental Journal 198, 707 - 711 (2005)
Published online: 11 June 2005 | doi:10.1038/sj.bdj.4812389
Comparative study of two canal obturation techniques by image analysis and EDS microanalysis
M Guigand1, D Glez2, E Sibayan3, G Cathelineau4 & J -M Vulcain5
- This study shows that the Thermafil technique provides better results than cold lateral condensation if a corono-apical tapered preparation is made.
- This technique may be used even if the apical part of the root canal is instrumented with .02 taper files.
- The practitioner has to take into account the different tapers of both Thermafil and apical file by using a smaller diameter for the Thermafil obturator.
Abstract
Aim The aim of this in vitro study was to compare the marginal adaptation achieved by two obturation techniques (lateral condensation and Thermafil) using human teeth prepared by continuous rotation with the HERO 642® system.
Method The percentages of gaps and sealer on the root canal surface were determined by analysing the images of 12 sections per tooth. Tubule sealer penetration was assessed by backscattered scanning electron microscopy and energy dispersive spectrometry microanalysis.
Results The Thermafil obturation technique resulted in virtually no gaps and very low amounts of sealer on the root surface, unlike the lateral condensation technique. Tubule sealer penetration occurred with both techniques, but was deeper, especially in the mid and apical zones, with the lateral condensation technique.
- Lecturer, Member of the 'Equipe de Biomatériaux en Site Osseux - UMR CNRS 6511', Department of Endodontics, University of Rennes 1, France
- Member of the 'Equipe de Biomatériaux en Site Osseux - UMR CNRS 6511', Faculty, University of Rennes 1, France
- Postgraduate Student, Member of the 'Equipe de Biomatériaux en Site Osseux - UMR CNRS 6511', University of Rennes 1, France
- Professor, Head of the 'Equipe de Biomatériaux en Site Osseux - UMR CNRS 6511', University of Rennes 1, France
- Head of the Department of Endodontics and Restorative Dentistry, Faculty of Dentistry, University of Rennes 1, France
Correspondence to: M Guigand1
Faculté de Chirurgie Dentaire, 2 place Pasteur, 35000 Rennes, France
e-mail: martine.guigand@univ-rennes1.fr