Evaluation for cracks associated with ultrasonic root-end preparation of Gutta-Percha filled canals

Kristen L. Beling, J. Gordon Marshall, Leslie A. Morgan, J. Craig Baumgartner

Research output: Contribution to journalArticlepeer-review

53 Scopus citations


Many clinicians use ultrasonics for root-end preparations. The purpose of this study was to evaluate resected root-end surfaces of bilaterally matched human teeth for cracks before and after ultrasonic root-end preparation. Twenty matched pairs of extracted single rooted teeth were divided into two experimental groups. In group 1, root-end resection was performed on uninstrumented teeth. In group 2, root-end resection was performed after the canals were instrumented and filled with gutta-percha. All teeth in both groups received root-end preparations using ultrasonic instrumentation at low power. Two examiners evaluated the root-ends after root-end resection and again after root-end preparation using zoom magnification of 20 × to 63×. The number, types, and location of cracks were mapped. There were no significant differences when gutta-percha filled roots were compared to uninstrumented roots with regard to the number or type of cracks after root-end resection or root-end preparation. In addition, there were no significant differences in the number or type of cracks following root resection and ultrasonic root-end preparation when compared to teeth with root resection alone.

Original languageEnglish (US)
Pages (from-to)323-326
Number of pages4
JournalJournal of endodontics
Issue number5
StatePublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • General Dentistry


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