Cone-beam computed tomography-based diagnosis and treatment simulation for a patient with a protrusive profile and a gummy smile
| Autor: | Satoshi Kokai, Toshihiro Imamura, Shunsuke Uesugi, Takashi Ono |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Cone beam computed tomography Bimaxillary protrusion Case Report Orthodontics 03 medical and health sciences 0302 clinical medicine stomatognathic system Gummy smile Medicine Maxillary central incisor Radiation treatment planning Anterior teeth business.industry Cone-beam computed tomography Incisive canals 030206 dentistry medicine.disease Orthodontic mini-implant stomatognathic diseases medicine.anatomical_structure 030101 anatomy & morphology Digital simulation Malocclusion business |
| Zdroj: | Korean Journal of Orthodontics |
| ISSN: | 2005-372X 2234-7518 |
| DOI: | 10.4041/kjod.2018.48.3.189 |
| Popis: | For patients with bimaxillary protrusion, significant retraction and intrusion of the anterior teeth are sometimes essential to improve the facial profile. However, severe root resorption of the maxillary incisors occasionally occurs after treatment because of various factors. For instance, it has been reported that approximation or invasion of the incisive canal by the anterior tooth roots during retraction may cause apical root damage. Thus, determination of the position of the maxillary incisors is key for orthodontic diagnosis and treatment planning in such cases. Cone-beam computed tomography (CBCT) may be useful for simulating the post-treatment position of the maxillary incisors and surrounding structures in order to ensure safe teeth movement. Here, we present a case of Class II malocclusion with bimaxillary protrusion, wherein apical root damage due to treatment was minimized by pretreatment evaluation of the anatomical structures and simulation of the maxillary central incisor movement using CBCT. Considerable retraction and intrusion of the maxillary incisors, which resulted in a significant improvement in the facial profile and smile, were achieved without severe root resorption. Our findings suggest that CBCT-based diagnosis and treatment simulation may facilitate safe and dynamic orthodontic tooth movement, particularly in patients requiring maximum anterior tooth retraction. |
| Databáze: | OpenAIRE |
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