Application of integrated digital maxillodental model in computer aided design of individualized lingual brackets / 中华口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To create an integrated digital maxillodental model and to apply it in computer aided design (CAD) of individualized lingual brackets in order to align both crowns and roots without fenestration and dehiscence.</p><p><b>METHODS</b>Cone-beam computerized tomography (CBCT)-based maxillodental model and laser-scanned dental model were integrated by auto registration in 10 patients with malocclusions. The registration error was calculated automatically. Three observers tested the method independently. The inter-observer difference was investigated. An integrated model was selected randomly and the setup was created with roots and jaws in good relationship without fenestration and dehiscence. The individualized lingual brackets were designed by CAD on the setup.</p><p><b>RESULTS</b>No significant difference was found in inter observers (P > 0.05). The registration errors of maxilla and mandible were (0.144 ± 0.020) mm and (0.141 ± 0.022) mm, respectively. The digital individualized lingual brackets based on the virtual treatment in integrated digital maxillodental model were produced.</p><p><b>CONCLUSIONS</b>An integrated digital maxillodental model was created in good accuracy. By applying the integrated model, individualized lingual brackets were designed.</p>