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Comparison of apical seal of four obturation techniques after delayed post space preparation

Authors: Ali H. Al-Shimmary علي الشمري --- Hussain F. Al-Huwaizi, حسين فيصل الحويزي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2012 Volume: 24 Issue: special issue 2 Pages: 1-4
Publisher: Baghdad University جامعة بغداد


Backgroound: This in vitro study was conducted to compare the apical seal of four obturation techniques afterdelayed post space preparation.Materials and methods: Sixty simulated straight canals in clear resin blocks were used. The samples which had thesame length, size of apical preparation and taper, were divided into four groups obturated with lateralcondensation, warm vertical compaction, Thermafil, and Softcore obturators. Apexit was used as root canal sealer.Delayed post space preparation was carried out by peeso reamers after one week leaving 6 mm of gutta-perchaapically. The coronal cavity was sealed and the samples immersed in 2 % methylene blue dye for 7 days after whichthe samples were examined by stereomicroscope and calibrated grid to measure apical dye leakage in mm.Results: Vertical compaction leaked significantly less than lateral condensation and Softcore, and Thermafil leakedsignificantly less than Softcore. Both Thermafil and Softcore were comparable to lateral condensation; there was nosignificant difference between vertical compaction and Thermafil.Conclusion: Thermafil and Softcore had no effect on the apical seal when delayed post preparation was consideredand that the apical seal obtained by Thermafil and Softcore was comparable to lateral condensation technique

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