In-vitro assessment of the accuracy and reliability of mandibular dental model superimposition based on voxel-based cone-beam computed tomography registration
| Autor: | Jing Li, Yan Liu, Yanheng Zhou, Gaofeng Han, Xue-Dong Wang, Shuo Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Molar
Cone beam computed tomography 050402 sociology Computer science Orthodontics computer.software_genre Mandibular first molar 03 medical and health sciences 0302 clinical medicine 0504 sociology Incisor stomatognathic system Voxel medicine Premolar Superimposition Digital models Computed tomography 05 social sciences Mandible 030206 dentistry stomatognathic diseases medicine.anatomical_structure Tooth movement Original Article Orthodontic treatment computer |
| Zdroj: | Korean Journal of Orthodontics |
| ISSN: | 2005-372X 2234-7518 |
| Popis: | Objective This study was performed to evaluate the accuracy and reliability of a newly designed method to achieve mandibular dental model superimposition, using voxel-based cone-beam computed tomography (CBCT) registration. Methods Fourteen dry cadaveric mandibles and six teeth extracted from patients with severe periodontitis were used to establish 14 orthodontic tooth-movement models. The protocol consisted of two steps: in the first step, voxel-based CBCT mandible superimposition was performed; the reference comprised the external portion of the symphysis, extending to the first molar. The laser-scanned dental model image was then integrated with the CBCT image to achieve mandibular dental model superimposition. The entire process required approximately 10 minutes. Six landmarks were assigned to the teeth to measure tooth displacement, using tooth displacement on the superimposed laser-scanned mandibles as the reference standard. Accuracy was evaluated by comparing differences in tooth displacement based on the method and the reference standard. Two observers performed superimposition to evaluate reliability. Results For three-dimensional tooth displacements, the differences between the method and the reference standard were not significant in the molar, premolar, or incisor groups (p > 0.05). The intraclass correlation coefficients for the inter- and intra-observer reliabilities of all measurements were > 0.92. Conclusions Our method of mandibular dental model superimposition based on voxel registration is accurate, reliable, and can be performed within a reasonable period of time in vitro, demonstrating a potential for use in orthodontic patients. |
| Databáze: | OpenAIRE |
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