Déplacement orthodontique des 3es molaires mandibulaires avec le système Orthodontic Anchorage Spider Screw® (OASS)

The second case describes the orthodontic extrusion of a lower wisdom tooth conservation of which was severely endangered for endodontic reasons. Within 10 weeks, using forced orthodontic eruption associated with a circumferential fibrotomy, we obtained satisfactory lengthening of the clinical crown to prepare for correct prosthetic reconstruction. This was achieved without periodontal surgery (which would have been difficult at this anatomical site) and with no orthodontic involvement of other teeth.