Managing curved canals

Abstract

Dilaceration is the result of a developmental anomaly in which there has been an abrupt change in the axial inclination between the crown and the root of a tooth. Dilaceration can be seen in both the permanent and deciduous dentitions, and is more commonly found in posterior teeth and in maxilla. Periapical radiographs are the most appropriate way to diagnose the presence of root dilacerations. The controlled regularly tapered preparation of the curved canals is the ultimate challenge in endodontics. Careful and meticulous technique will yield a safe and sufficient enlargement of the curved canals. This article gives a review of the literature and three interesting case reports of root dilacerations.

Hallazgos radiográficos de connotación endodóntica utilizando tomografía computarizada de haz cónico

“…La presencia de dilaceraciones en endodoncia presenta un desafío para el operador clínico tanto en el diagnóstico, como en el tratamiento (12), dependiendo de la severidad de la curvatura (13). En nuestro estudio, las dilaceraciones alcanzaron al 9,2% del total de dientes examinados, porcentaje coincidente con estudios de población adulta en Croacia (14).…”

Endodontic Management of Aberrant Root Canal Anatomy in Premolars - A Report of Two Cases

“…The incidence of these procedural errors can be reduced by decreasing the restoring force, by means of which straight file has to bend against the curved dentin surface or decreasing the length of the file which is aggressively cutting at a given span. Decreasing the force can be done by precurving the file, extravagant use of smaller number files, use of intermediate size of files or use of flexible files [16]. In the present case series, NiTi K flex files were used during the instrumentation of the root canals.…”

“…use of coronal pre-flaring and crown down technique or by modifying the cutting edges of the instrument. Cutting edges of the files can be modified by dulling the flute on outer surface of apical third and inner portion of middle third by using a diamond file [16]. In present case series, 25 mm long instruments were used for the preparation of bayonet shaped root canals.…”

Determination of pH and Evaluation of the Efficiency of Different Definitive Root Canal Filling Materials in Conservative Treatment of Chronic Apical Periodontitis

“…Without a rigorous cleaning and shaping of the root canal with carefully selected instruments and a good technique associated with irrigants, the root canal filling becomes indifferent and its' pH value has no significance [30][31][32][33].…”