Effect of nickel-titanium engine-driven instrument rotational speed on root canal morphology

W. Bruce Poulsen, S. Brent Dove, Carlos E. del Rio

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Thirty-six mesial canals in 18 extracted human mandibular molars were randomly allocated to three experimental groups. Specimens were prepared and evaluated using a modified Bramante technique. Teeth were sectioned at the midroot and apical regions. Canals were prepared with the Lighspeed instruments rotating at 750, 1300, or 2000 rpm. Digitized unistrumented and instrumented canal images were compared via subtraction software. There was no significant difference (p < 0.05) among the three experimental groups in the amount of dentin removed, canal transportation, or the ability of the instrument to remain centered in the canal.

Original languageEnglish (US)
Pages (from-to)609-612
Number of pages4
JournalJournal of endodontics
Volume21
Issue number12
DOIs
StatePublished - Dec 1995

ASJC Scopus subject areas

  • Dentistry(all)

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