Rapid orthodontic extrusion of crown root and cervical root fractured teeth

Abstract

This study concerns the relapse tendency and extent of root resorption in 33 extruded non-vital crown root fractured or cervical root fractured teeth in 32 patients 10-20 years old. They constitute all orthodontically extruded teeth at the Orthodontic or Pedodontic Departments, Eastman Institutet, Stockholm (1982-1987). A simple extrusion mechanism exerted a force of 60-70 p along the root axis of the tooth. An extrusion of 2-3 mm was obtained in most patients; the most extreme effect was 6 mm. In 16 patients the extrusion was achieved within 3 weeks, in 12 it lasted for 4-6 weeks and in 5, 7-9 weeks. The treatment was more complicated in the lower jaw. After the extrusion, a fibrotomy was done and in most patients also a gingival recontouring to create an optimal relation between the gingiva and the margin of the restoration. Periodically identical radiographs were taken immediately before and after the extrusion, after 3 months and after 1 year. A minor relapse, about 0.5 mm, was observed in 3 patients. Limited root resorption was found in 6 teeth and severe in only 1. The resorptions did not progress in the following 2 years of observation.

Aesthetic management of a complicated crown fracture: a multidisciplinary approach

“…In case of rapid extrusion of the tooth, the periodontal fibres stretch and readjust, but the bone does not have time to remodel because of rapid movement. Thus, there is no coronal shift of the marginal bone, facilitating prosthetic restoration as there is no need to reshape bone 10. Sulcular incision, either at each appointment during extrusion process or just before the stabilisation period, is necessary to prevent bone and soft tissue movement 11 12…”

Esthetic Rehabilitation of Complicated Crown Fractures Utilizing Rapid Orthodontic Extrusion and Two Different Restoration Modalities

“…Thus, there is no coronal shift of the marginal bone, facilitating prosthetic restoration as there is no need to reshape bone. 411 …”

Extrusión Ortodóncica Con Fibrotomía Supracrestal: Caso Con Fin Protésico

“…Sus estudios muestran cómo los dientes con fracturas que comprometen la raíz, logran con la extrusión sobrepasar la inserción epitelial para ser preparados con líneas de terminación protésica-mente adecuadas. 12,16,21 La extrusión ortodóncica con fibrotomía supracrestal es considerada una excelente técnica y muy beneficiosa al generar movimientos dentales controlados, tanto para los odontólogos que se comprometen en la rehabilitación dental, como para el paciente que desea mantener sus dientes.…”