Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.
Clin Oral Implants Res. 2011 Dec;22(12):1415-9. doi: 10.1111/j.1600-0501.2010.02116.x. Epub 2011 Mar 8.
Rotational panoramic radiography is routinely used in dental practice. It has not been clarified, however, whether an accessory mental foramen can be demonstrated using this technique. The visibility of accessory mental foramina on rotational panoramic radiographs was compared with those on para-panoramic images reconstructed from cone-beam computed tomographic (CBCT) images.
A total of 365 patients (130 males and 235 females) were retrospectively analyzed. Para-panoramic images were reconstructed from CBCT images with the accessory mental foramen/foramina using three-dimensional visualization and measurement software, and then the accessory mental foramen on rotational panoramic images was compared with that on para-panoramic images.
A total of 37 accessory mental foramina were observed in 28 patients on CBCT images. The rate of being able to visualize the accessory mental foramen or bony canal between the point of bifurcation from the mandibular canal and the accessory mental foramen on rotational panoramic radiographs was 48.6% (18 of 37 accessory mental foramina).
Approximately half of the accessory mental foramina-positive CBCT images demonstrated the accessory mental foramen, or bony canal between the point of bifurcation from the mandibular canal and accessory mental foramen on rotational panoramic radiographs.
旋转式全景 X 光摄影在牙科实践中被常规使用。然而，使用这种技术是否可以显示副颏孔尚不清楚。本研究比较了旋转式全景 X 光片和锥形束 CT（CBCT）图像重建的曲面断层片上副颏孔的显示情况。
回顾性分析了 365 名患者（男 130 名，女 235 名）。使用三维可视化和测量软件对 CBCT 图像进行曲面断层片重建，然后比较旋转全景图像上的副颏孔与曲面断层片上的副颏孔。
在 CBCT 图像上共观察到 28 例患者的 37 个副颏孔。在旋转全景 X 光片上可以观察到下颌管分叉处到副颏孔之间的副颏孔或骨性管的比例为 48.6%（37 个副颏孔中的 18 个）。
在 CBCT 图像上显示为副颏孔阳性的患者中，大约有一半在旋转全景 X 光片上可以显示下颌管分叉处到副颏孔之间的副颏孔或骨性管。
