723H
Fig. 12.31 Extrusive force being
applied via a 'J' hook cemented into the
root canal of the upper left permanent
lateral incisor.724H
Fig. 12.32 (a) Initial presentation of a high coronal root fracture which extended
palatally below alveolar bone. (b) and (c) Post, core, and diaphragm after root
extrusion.
12.7.2 Splinting
Trauma may loosen a tooth either by damaging the periodontal ligament (p.l.) or
fracturing the root. Splinting immobilizes the tooth in the correct anatomical position
so that further trauma is prevented and healing can occur. Different injuries require
different splinting regimens. A functional splint involves one, and a rigid splint two,
abutment teeth either side of the injured tooth.
Regimens
P.L. INJURIES
Sixty per cent of p.l. healing has occurred after 10 days and it is complete within a
month. The splinting period should be as short as possible and the splint should allow