J Korean Acad Pediatr Dent.  2021 Feb;48(1):115-121. 10.5933/JKAPD.2021.48.1.115.

Spontaneous Eruption of a Dilacerated Mandibular Central Incisor after Trauma of a Primary Tooth : Two Case Reports

• Jang E
• Lee J
• Nam S
• Kim H

• KMID: 2513915
• DOI: http://doi.org/10.5933/JKAPD.2021.48.1.115

Abstract

Dilacerations generally involve central incisors; most often maxillary incisors rather than their mandibular counterparts. The clinical features of dilaceration include non-eruption of the responsible tooth or prolonged retention of the deciduous predecessor tooth. In Case 1, the tooth showed a dilaceration at the boundary between the crown and the root, more laterally rather than labiolingually. In Case 2, the dilacerated tooth showed a crown dilaceration with a relatively normal orientation of the dental root. In both cases, no significant space losses for eruption were observed. Moreover, it seems that unlike the maxilla with the palate, the mandibular anterior teeth are limited to show severe displacement.
From these cases, it is suggested that if a mandibular permanent incisor shows a crown dilaceration or lateral dilaceration at the boundary between the crown and the root, there is a relatively high probability of spontaneous eruption of the dilacerated tooth.