Analysis of nickel-titanium versus stainless steel instrumentation by means of direct digital imaging

Chris L. Coleman, Timothy A. Svec, Monty R. Rieger, John A. Suchina, M. Michael Wang, Gerald N. Glickman

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

This study compared step-back preparations in curved canals using nickel-titanium (Ni-Ti) K-files and stainless steel K-files. Forty canals in mesial roots of mandibular molars were embedded in casting resin and cross-sectioned at three levels: 1 to 2 mm from the apical foramen, middle of the curve, and coronal. Direct digital computer images were recorded before and after instrumentation. Superimposition of the images combined with digital subtraction computer software allowed direct measurement of area instrumented, distance of transportation, and shape analysis. The computer software calculated absolute center of gravity for each image analyzed to get a full 360-degree interpretation of the canal transport. Time of instrumentation was recorded. Results showed Ni-Ti files to cause significantly less transportation and remain more centered at the apical level (p < 0.05). Area removed by Ni-Ti and stainless steel files was not significantly different (p < 0.05). Time of instrumentation was not significantly different for Ni-Ti and stainless steel instruments (p < 0.05). Cross-sectional shape of the instrumented canal was not significantly different (p < 0.05).

Original languageEnglish (US)
Pages (from-to)603-607
Number of pages5
JournalJournal of endodontics
Volume22
Issue number11
DOIs
StatePublished - Jan 1 1996

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ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Coleman, C. L., Svec, T. A., Rieger, M. R., Suchina, J. A., Wang, M. M., & Glickman, G. N. (1996). Analysis of nickel-titanium versus stainless steel instrumentation by means of direct digital imaging. Journal of endodontics, 22(11), 603-607. https://doi.org/10.1016/S0099-2399(96)80030-6