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[Clinical use of three-dimensional surface reconstruction of spiral CT for impacted teeth in orthodontics]
Yu-xue Chen1, You Chen, Jie Guo
1Dept. of Orthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
Objective:
To evaluate the value of three-dimensional surface reconstruction of spiral CT-shaded surface display (SSD) to examine the impacted teeth before orthodontic treatment.
Methods:
Three-dimensional surface reconstruction of spiral CT and shaded surface display (SSD) was applied to twenty patients whose impacted teeth couldn't be judged clearly through the panorama and occlusal films.
Results:
Three-dimensional surface reconstruction of spiral CT and SSD could clearly demonstrate the dental surface image including crown, root neck and root bifurcation in three-dimensional way, labial or palatal location, eruption orientation and relation with dentition.
Conclusion:
It is concluded that the three-dimensional surface reconstruction is an accurate and effective method to examine impacted teeth before orthodontic treatment.
