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Roland Weiger
Roland Weiger
Switzerland
Publications
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Research Article
Curved Root Canals: Effects of Dimensional Parameters on the Insertion Depth of Irrigation Needles
Author(s): Fabiola-Regina Rodríguez, Hanjo Hecker and Roland WeigerFabiola-Regina Rodríguez, Hanjo Hecker and Roland Weiger
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 .. View More»
DOI: 10.4172/2161-1122.1000101