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. It is seen involving both the permanent and primary dentitions. Root canal curvatures may be apical, gradual, sickle-shaped, severe-moderate-straight curve, bayonet / S-shaped curve and dilacerated curve. Curved root canals exhibit great difficulty in cleaning, shaping and obturation of the root canal system. This mandates routine periapical radiographs which aid the clinician in assessing these morphological variations in the root canal system. This article highlights a rare presentation of dilacerated distal root of left mandibular first molar resembling radiographically as walking molar in 17-year-male patient.
Highlights
The term dilacerations refers to an abrupt change in the axial inclination or curve in the crown or root of a tooth
Deep class I cavitated caries noticed with respect to left first mandibular molar was observed and initial class I caries with respect to maxillary right upper first and second molars
Provisional diagnosis of chronic irreversible pulpitis was considered for left mandibular first molar
Summary
The term dilacerations refers to an abrupt change in the axial inclination or curve in the crown or root of a tooth. Tomes in 1848 was the first to use this term (Tomes, 1848) and refers to an angulation that may occur anywhere along the length of the tooth, that is, its crown, amelocemental junction, along the root, or by only involving the apex of the root (Tomes, 1848; Shafer et al, 1983). Controversy is still in debate for the exact etiology of dilaceration; the most accepted etiology is mechanical trauma to the primary predecessor tooth (Prabhakar et al, 1990; Maragakis, 1995; Kearns, 1998; Matsuoka et al, 2000). The other possible contributing factors that have been proposed include the ectopic development of the tooth germ, presence of scar/ infection/ cyst/ tumour, developmental anomaly of tooth germ, lack of space, syndrome and hereditary factors (Jafarzadeh and Abott, 2007)
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