Interdisciplinary Management of a Class II Bimaxillary Protrusion Case With a Traumatized Maxillary Central Incisor: A Case Report

The class II bimaxillary protrusion malocclusion with class II or end on molar relation is generally associated with procumbency of lips. This case report presents a case of a 17-year-old nongrowing male patient with a traumatized left central incisor due to a fall with a chief complaint of forwardly placed and gap in upper front teeth. The traumatized left central incisor with Ellis class IV fracture was with a loss of crown structure and a poor prognosis of remaining tooth structure. Class II bimaxillary protrusion malocclusion was planned to be treated with orthodontic camouflage. A fixed mechanotherapy orthodontic treatment was performed by extracting the right first premolar and left central incisor and substituting the extracted maxillary central incisor with the lateral incisor. Thus, the maxillary canine was substituted for the lateral incisor, and the first premolar was substituted for canines. It was followed by substituting the lateral incisor with canine by recontouring the crown and restoring the substituted lateral incisor with veneer. The case was completed in 24 months, smile esthetics were improved, and functional occlusion of the class I canine and Angle's class II molar relationship bilaterally was achieved.