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Dimensions of stabident intraosseous perforators and needles

Lookup NU author(s): Professor John Whitworth


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Problems can be encountered inserting intraosseous injection needles through perforation sites. This in vitro study examined the variability and size compatibility of Stabident intraosseous injection components. The diameters of 40 needles and perforators from a single Stabident kit were measured in triplicate with a toolmakers microscope. One-way ANOVA revealed that mean needle diameter (0.411 mm) was significantly narrower than mean perforator diameter (0.427 mm) (p < 0.001). A frequency distribution plot revealed that needle diameter followed a normal distribution, indicating tight quality control during manufacture. The diameter of perforators was haphazardly distributed, with a clustering of 15% at the lower limit of the size range. However on no occasion was the diameter of a perforator smaller than that of an injection needle. We conclude that components of the Stabident intraosseous anaesthetic system are size-compatible, but there is greater and more haphazard variability in the diameter of perforators than injection needles. Copyright © 2001 by The American Association of Endodontists.

Publication metadata

Author(s): Whitworth J

Publication type: Article

Publication status: Published

Journal: Journal of Endodontics

Year: 2001

Volume: 27

Issue: 9

Pages: 581-583

Print publication date: 01/01/2001

ISSN (print): 0099-2399

ISSN (electronic): 1878-3554

Publisher: Elsevier


DOI: 10.1097/00004770-200109000-00007

PubMed id: 11556563


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