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January 24, 2010 | History

Examination and comparison of torsional fatigue profiles of rotary nickel-titanium files of varying size and design 1 edition

Examination and comparison of torsional fatigue profiles of rotary nic ...
Ashkan Hafezi

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Examination and comparison of torsional fatigue profiles of rotary nickel-titanium files of varying size and design.

Published 2005 .
Written in English.

About the Book

The torsional fatigue profiles of .06 taper ProFile(TM) and K3(TM) rotary nickel-titanium files sizes 25 and 40 were examined. The testing equipment was adapted from the ANSI/ADA Specification No. 28. For each file size and type, the mean log number of cycles to fracture was determined. Analysis of variance and Tukey's HSD test were used to determine statistically significant differences among the different groups corresponding to the different rotational angles. As the rotational angle decreased, a higher number of cycles to fracture was observed. The differences in the number of cycles were significant among the different rotational angles (p<0.05). For a given rotational angle, size 40 files had significantly fewer cycles to fracture compared to size 25 files (p<0.05). There was not a significant difference in the number of cycles to fracture between ProFile(TM) and K3(TM) files. The endurance limit (106 cycles without fracturing) was reached at 5° and 2.5° for files sizes 25 and 40, respectively.

Edition Notes

Source: Masters Abstracts International, Volume: 44-02, page: 0807.

Thesis (M.Sc.)--University of Toronto, 2005.

Electronic version licensed for access by U. of T. users.

GERSTEIN MICROTEXT copy on microfiche (1 microfiche).

The Physical Object

Pagination
64 leaves.
Number of pages
64

ID Numbers

Open Library
OL19216684M
ISBN 10
049407230X

History

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January 24, 2010 Edited by WorkBot add more information to works
December 11, 2009 Created by WorkBot add works page