Bimaxillary protrusion case diagnosed and treated with a cephalogram constructed from a CT and TOP analyzer system

Abstract

As CT, computerized tomography has been incorporated into daily clinical practice. It has become possible to diagnose medical conditions that could not be detected by conventional two-dimensional X-ray images, such as the relationship of the root postion in the bone housing. Despite the fact that we are currently in a transitional period of change towards full digital technology, a hybrid diagnosis and treatment method that utilizes the advantages of both digital and analog technology remains effective, while also utilizing the traditional 2-D cephalometric analysis method. 　Therefore, we present a case in which diagnosis was performed using a cephalogram constructed from CT and the TOP analyzer system, Tagahara Occlusal Plane analyzer system, and a bracket placement was performed by manufacturing an analog setup model. The patient was a 20-year-old female at the first visit. Her chief complaint of anterior protrusion of the right central incisor of the maxilla. She was diagnosed with Angle Class Ⅰ malocclusion, bimaxillary protrusion and had her first upper and lower premolars extracted and treated with half-lingual braces. Two orthodontic anchor screws were placed on the maxillary palate side to retract the anterior teeth. The active treatment period was 2 years . Although the patient's profile improved and the patient satisfied, some points that require improvement remained.