Original Device with Vertical Force System for Impacted Teeth: Clinical Applications on Impacted Canines

Aim: Develop an intra-bone device for the insertion in oral cavity areas, both in attached gingiva and areas covered by mobile mucosa, in order to produce a vertical vector for the extrusion of impacted teeth. In these clinical cases, the device is used in the palatine bone for the recover of impacted canines. Materials and methods: The device has been created by the authors for extradental anchoring with mutual coupling means with a metallic wire, which emerges by oral mucosa (european patent n° 2296576B1). The screw is crossed by a dead hole and the wire has a portion that is mounted so that it can rotate freely within an axial hole of a conical pin that is adapted to be forced into the hole of the screw. In these clinical cases, the screw is inserted in the palatine area and linked with the occlusal portion of the canine crown by a NiTi-SS 0,014-gauge elastic wire, developing in this way a vertical vector that produces the extrusion. Results: The vertical vector that develops from the screw is particularly usefull for the extrusion of the impacted canine. Conclusions: It is possible to avoid the anchoring on the dental crowns of posterior teeth, focusing it only on the intra-bone screw, so that the entire equipment will be notably reduced and, thanks to its lingual position, considerable biomechanic and aesthetic advantages have been found.