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[Clinical application of spiral 3-D CT reconstruction for maxillary impacted teeth]
Cong Lin1, Xu-Xia Wang, Ya-Nan Zou
1Department of Orthodontics, Shengli Oil-Field Central Hospital, Dongying, Shandong Province, China.
Purpose:
To evaluate the clinical usefulness of spiral 3-D CT reconstruction for maxillary impacted teeth.
Methods:
Spiral CT was performed in 47 patients whose maxillary impacted teeth couldn't be judged clearly through the panoramic radiograph and occlusal film. 3-D reconstruction, including MIP (maximum intensity projection) and MPR (multiplanar reconstructions) was made to display the impacted teeth's shape, location and its relationship with adjacent teeth.
Results:
There were 67 maxillary impacted teeth in 47 patients. Spiral 3-D CT could clearly demonstrate the dental image including crown, root, neck and root bifurcation, and 3-D imaging could clearly display the maxilla anatomy and the dental structure.
Conclusion:
Spiral CT 3-D reconstruction is a useful technique to display three-dimensional configuration of teeth.Three dimensional reconstruction is an accurate and effective method to localize impacted teeth before orthodontic treatment.
