Orthodontic Extrusion for Restorative Purposes

Sabine Westphal VIEIRA, Luiz Renato Camargo ESSENFELDER, Orlando TANAKA, Hiroshi MARUO, Sérgio VIEIRA

The orthodontic extrusion is a conservative treatment which aims the teeth’s recuperation with subgengival and/or bony defects. Surgical procedures would be also a solution in these cases, but on the other hand, they can result in aesthetic and periodontal complications. This paper deals with the most frequent indication of the orthodontic extrusion, which is the extrusion of anterior teeth with restorative finality. Among other things, it could be concluded the biomechanical principles, which rule the extrusive proceeding, are more important than the methodology employed. Furthermore, the extrusive movement must have an axial direction and, for this, the anchorage system which uses adjacent teeth is the most indicated. Moreover, 20 to 40 grams applied by fixed appliances with rectangular wires are indicated for the extrusion of an anterior tooth, regarded that they promote better movement control and are independent of the patient’s collaboration. The concomitant migration of the periodontal structures is inversely proportional to the movement’s velocity and force. A long contention period is very important because of the recurrence potential that remains, even after a long time. In spite of being apparently simple and widely employed by general dentists, this kind of movement follows some basics principles and demands periodic attendance. In this way, the present revision was performed to broach some important aspects like indications and contra-indications, anchorage systems, orthodontic appliances, movement velocity, control and contention in order to emphasise the relevance of the strict protocol for this technique.

Keywords: Controlled eruption. Extrusion. Forced eruption. Orthodontic extrusion.

Saturday, November 23, 2024 08:30