Planejamento biomecânico 3D no tratamento da Classe II ­ como se beneficiar dos efeitos colaterais ­ relato de caso / 3D biomechanical planning in Class II treatment ­ how to benefit from side effects ­ case report

Resumo O tratamento ortodôntico em pacientes adultos, hoje, faz parte da prática clínica de rotina. A exigência estética, aumento da expectativa de vida e a acessibilidade ao tratamento ortodôntico fizeram com que a procura pelo tratamento ortodôntico por pacientes adultos aumentasse muito. O propósito deste trabalho é apresentar o planejamento tridimensional (3D) e a mecânica ortodôntica de correção da maloclusão de Classe II divisão 2 de Angle com sobremordida profunda e molares extruídos, por meio de um caso clínico. Em que foram utilizados os efeitos colaterais da mecânica de intrusão, associada ao arco de torque, a favor da correção anteroposterior, vertical, assim como a correção da extrusão dos molares superiores. Ou seja, foram utilizados sistemas de forças associados, a fim de facilitar e acelerar mecanicamente o tratamento. O planejamento do tratamento foi realizado com o programa T3D Occlusogram e DDP. (AU)

Abstract Orthodontic treatment in adult patients today is part of clinical practice routine. The aesthetic request, increased life expectancy and accessibility to treatment caused the demand for adult patients to increase exponentially. The purpose of this work is to present the threedimensional (3D) and orthodontic mechanics of the correction of Angle Class II division 2 malocclusion with deep overbite and extruded molars, through a clinical case, in which side effects of intrusion mechanics were used, associated to the torque arc in favor of vertical anteroposterior correction, as well as correction of the upper molars extrusion, that is, the use of associated force systems in order to facilitate and mechanically accelerate the treatment. Treatment planning was carried out with T3D Occlusogram and DDP program. (AU)

Endodontic and orthodontic management of traumatically intruded teeth with horizontal root fracture: a case report.

This report describes the case of an 8-year-old boy that was referred to endodontic and orthodontic treatment after suffering an injury that led to intrusion of the maxillary right permanent central incisor, palatal displacement of the upper right lateral incisor, and root fracture of both central incisors. Both injured teeth were immature and had open apices. The intruded tooth was repositioned by endodontic and orthodontic management. Endodontic therapy was performed in both teeth with periodical changes of calcium-hydroxide-based paste as root canal dressing and introduction of MTA as an apical barrier. The postoperative course was uneventful with clinical and radiographic success up to 3 and 1/2 years of follow up. In the present case, orthodontic repositioning combined with endodontic therapy constitued a viable alternative treatment for intrusive luxations in immature permanent teeth.