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Quantification of tooth displacement from cone-beam computed tomography images.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chen, Jie-Yu Li, Shuning Fang, Shiaofen |
| Copyright Year | 2009 |
| Abstract | INTRODUCTION The objectives of this study were to demonstrate a method that could be used to quantify three-dimensional (3D) tooth displacement from cone-beam computed tomography (CBCT) images and to assess its accuracy. METHODS Images of the same mandible taken 2 weeks apart with no treatment were used. Four mandibular teeth-left lateral incisor, left canine, left first premolar, and left first molar-either remained unmoved or were artificially displaced with known values on 1 image to simulate after-treatment conditions. The iterative closest point method was used to superimpose the unchanged bony part of the mandible and to find the transformation matrix between a tooth's 2 positions, before and after displacement. Tooth displacement was calculated from the transformation matrix. RESULTS All 6 displacement components in terms of translations along and rotations about the 3 axes on the tooth were obtained. The results showed that the errors could be managed: they were less than 5% in translation and 10% in rotation. CONCLUSIONS The 3D tooth displacement can be obtained from CBCT images, and the accuracy is acceptable for clinical use and can be improved when the quality of the images improves. |
| Starting Page | 393 |
| Ending Page | 400 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.ajodo.2007.10.058 |
| PubMed reference number | 19732674 |
| Journal | Medline |
| Volume Number | 136 |
| Issue Number | 3 |
| Alternate Webpage(s) | http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.464.2999&rep=rep1&type=pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.ajodo.2007.10.058 |
| Journal | American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
