Intrusão de molares superiores utilizando dispositivos de ancoragem esquelética: revisão de literatura

Abstract

The extrusion of the upper molars is caused by loss of teeth in the posterior-inferior region or the state of infraocclusion antagonists, this failure hinders the prosthetic rehabilitation of missing teeth as the interocclusal space for the reconstruction of the crown becomes insufficient. Orthodontic intrusion is the most conservative method of treatment to restore the vertical space. Despite being a less invasive procedure, tooth intrusion is one of the most difficult orthodontic movements are performed mainly in the posterior region due to larger root of the molar volume. The challenge is to get a pure intrusive movement without the extrusive effects of anchoring teeth. However, with the development of new devices in orthodontics, most professionals have a mechanism to overcome this problem: the skeletal anchorage. With the development of temporary devices - mini-implants and miniplates - for skeletal anchorage has become possible to apply light and constant movement without causing the anchorage unit forces. Intrusion of maxillary molars were obtained from 3.31 mm to 5.0 mm and using miniplates was 1.99 mm to 3.4 mm. The aim of this study is to conduct a literature review of temporary devices used for intrusion of maxillary molars.