Table of Contents Author Guidelines Submit a Manuscript
Case Reports in Dentistry
Volume 2014, Article ID 564106, 4 pages
Case Report

Constricted Canals: A New Strategy to Overcome This Challenge

1Ribeirão Preto Dental School, University of São Paulo, 05508-070 Ribeirão Preto, SP, Brazil
2Grande Rio University, 25071-202 Rio de Janeiro, RJ, Brazil

Received 19 February 2014; Accepted 2 April 2014; Published 11 May 2014

Academic Editor: Stefan-Ioan Stratul

Copyright © 2014 Ricardo Machado et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Negotiation of constricted canals can be a challenge during endodontic treatment. Over the years, several strategies have been presented in order to overcome the difficulties imposed by this anatomical feature. This paper presents three cases using a different protocol from that recommended by the manufacturer of the Protaper System in order to facilitate the negotiation of constricted canals. These cases suggest that the modified protocol shown is able to perform the shaping process with less resistance, reducing the risk of instrument separation and performing an effective process to reach the apical thirds in constricted canals.