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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

Publication:
July/August 2003
Volume 34 , Issue 7

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Comparison of two methods for the removal of root canal posts

Nicholas P. Chandler, BDS, MSc; Alison J. E. Qualtrough, MDS, PhD; David G. Purton, MDS

Pages: 534-536
PMID: 12946072

Objective: To compare the application of ultrasound with the use of an engine-driven trephine bur to remove parallel-sided root canal posts. Method and materials: Single-rooted human canine teeth were decoronated and prepared to receive preformed titanium posts. The posts were cemented with Panavia F resin cement. Ten teeth acted as controls, 10 had a 4-mm–deep gutter cut around the post using a Masserann trephining bur, and 10 were subjected to 10 minutes of ultrasound. The forces required to dislodge the posts were determined using a universal testing machine, and the data were analyzed using analysis of variance. Results: The only significant difference was between the trephined and ultrasonically energized groups, with the ultrasonic group requiring greater forces for dislodgement. Conclusion: Resin composite cement could be removed from around the posts with the trephine bur but with considerable difficulty, and neither method of dislodging the posts was effective.

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