Cutting characteristics of a sonic root-end preparation instrument

R. Devall, P. J. Lumley, M. Waplington, L. Blunt

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The aim of this study was to investigate the cutting ability of retro tips powered by a sonic handpiece (MM 1500, Micro Mega, Prodonta, Geneva, Switzerland). Two levels of the following variables were evaluated in this study: a) power setting with the air inlet ring half or fully open, b) orientation of tip perpendicular or parallel to the long axis of the handpiece, c) length of tip 2 or 3 mm, d) loading of 25 or 50 grams, e) tip size 35 or 55. The substrate used was 1 mm thick sections of bovine bone and load was controlled by using a load cell interfaced with a transducer meter. Instrumentation time was fixed at 10 seconds with water irrigation. A 25 full factorial analysis was performed with two replications making a total of 64 experimental units. The resultant depth of cut was measured using a stereo microscope at x50 magnification. Analysis of the data indicated that all variables had a significant effect on cutting (ANOVA p<0.05). The most significant factor was power, followed by tip length, tip orientation, width and load. An increase in loading resulted in tip constraint and a reduction of cutting at the lower power setting. In conclusion sonically activated retro tips were found to cut satisfactorily with instrument air inlet ring opening/power having the main effect.

Original languageEnglish
Pages (from-to)96-99
Number of pages4
JournalEndodontics and Dental Traumatology
Volume12
Issue number2
DOIs
Publication statusPublished - Apr 1996
Externally publishedYes

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Air
Transducers
Switzerland
Analysis of Variance
Bone and Bones
Water

Cite this

Devall, R. ; Lumley, P. J. ; Waplington, M. ; Blunt, L. / Cutting characteristics of a sonic root-end preparation instrument. In: Endodontics and Dental Traumatology. 1996 ; Vol. 12, No. 2. pp. 96-99.
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Cutting characteristics of a sonic root-end preparation instrument. / Devall, R.; Lumley, P. J.; Waplington, M.; Blunt, L.

In: Endodontics and Dental Traumatology, Vol. 12, No. 2, 04.1996, p. 96-99.

Research output: Contribution to journalArticle

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