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.