Introduction
In 1848, Tomes introduced the term ”dilacerations” to describe an
angular or sharply curved section in a tooth’s root or crown, as well as
a misalignment between the crown and its root. This deformity often
arises from disturbances during odontogenesis, such as traumatic
injuries or ectopic development of the tooth germ (1). Dilaceration
shows different geographic, age, and tooth-type distribution (2). The
root dilacerations are most commonly present in the apical third of the
root in incisors, canines, and premolars, the middle third of the root
in first and second molars, and the radicular cervical third of the root
in third molars (3).Both permanent and primary teeth can have
Dilaceration, but the latter has a far lower prevalence; coronal
dilaceration is more prevalent than radical dilaceration (4). The
reported prevalence of radicular dilaceration depends on its exact
definition. Reports range from 1.8% to 98%, which is a wide range (5).
dilacerations may result from differing criteria for definition. Using a
criterion of a 20-degree angle or greater deviation from the long axis
of the tooth, the prevalence of root dilacerations in maxillary lateral
incisors was reported at 98% (6).
This article describes the successful treatment of three dilacerated
root canals of the premolars (maxillary and mandibular) and a maxillary
canine in an attempt to demonstrate how effective combined morphological
knowledge and practical apparatus can be used in treatments of various
root variations.