alexa Curved Root Canals: Effects of Dimensional Parameters on the Insertion Depth of Irrigation Needles
ISSN: 2161-1122

Dentistry
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Research Article

Curved Root Canals: Effects of Dimensional Parameters on the Insertion Depth of Irrigation Needles

Fabiola-Regina Rodríguez*, Hanjo Hecker, Roland Weiger

Department of Periodontology, Cariology and Endodontology, School of Dentistry, University of Basel, Basel, Switzerland

*Corresponding Author:
Fabiola-Regina Rodriguez
Department of Periodontology, Cariology and Endodontology
School of Dentistry, University of Basel
Hebelstrasse 3, 4056 Basel, Switzerland
Tel: +41 61 267 26 80
Fax: +41 61 267 26 59
E-mail: [email protected]

Received date June 08, 2011; Accepted date August 02, 2011; Published date August 09, 2011

Citation: Rodriguez FR, Hecker H, Weiger R (2011) Curved Root Canals: Effects of Dimensional Parameters on the Insertion Depth of Irrigation Needles. Dentistry 1:101 doi: 10.4172/2161-1122.1000101

Copyright: © Rodriguez FR, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Objective: To investigate the effects of size and taper of the apical preparation, root canal curvature and cannula diameter on the insertion depth of irrigation cannulas into root canals.
Study Design: One hundred and four root canals were divided into four curvature groups (0-5°; 6°-15°; 16°-25°; >25°). After apical enlargement to size 25.06 a 25G and a 30G irrigation cannula were inserted until binding. The distance between the cannula tip and the working length was related to the root canal length. The insertion procedure was repeated after enlargement to 40.04.
Results: In curved canals (>6°), the cannula never reached WL. With an apical preparation of 40.04 the 30G cannula could be introduced nearly to WL even in moderately curved canals (<26°).
Conclusion: Only a 30G cannula allows delivery of the irrigant to the apex of a curved root canal. The cannula could be inserted closer to WL when the apical preparation size was wider with a smaller taper compared to a small apical preparation size with a wider taper.

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