Comparison of dentinal crack incidence and of post removal time resulting from post removal by ultrasonic or mechanical force

Joel H. Altshul, Gordon Marshall, Leslie A. Morgan, J. Craig Baumgartner

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

The purpose of this study was to compare the frequency of canal and intradentin cracks after intraradicular post removal using ultrasonic instrumentation or the Gonan post removal system. Sixty cadaver teeth were divided into 4 groups of 15 teeth each: group 1, ultrasonic removal; group 2, Gonan post removal system; group 3, cemented posts not removed; and group 4, no posts. Groups 1 and 2 were contralateral matched pairs. Para Posts were placed in groups 1, 2, and 3 to 7 mm apical to the cementoenamel junction and luted with ZnPO4 cement. The time required for post removal in groups 1 and 2 was recorded. The teeth were extracted, sectioned, and examined. Canal and intradentin cracks were mapped, and their frequency was recorded at each level. There were statistically more cracks present in the ultrasonic group than the no post group. There were no other differences that reached statistical significance. It took significantly longer for post removal using the ultrasonic tip versus the Gonan system.

Original languageEnglish (US)
Pages (from-to)683-686
Number of pages4
JournalJournal of endodontics
Volume23
Issue number11
DOIs
StatePublished - Jan 1 1997

ASJC Scopus subject areas

  • Dentistry(all)

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