Yosue T, Brooks S L
Nippon Dental University, Department of Radiology, School of Dentistry, Tokyo, Japan.
Oral Surg Oral Med Oral Pathol. 1989 Oct;68(4):488-92. doi: 10.1016/0030-4220(89)90151-5.
The image of the mental foramen was studied on panoramic and periapical radiographs taken on four dry skulls with a variety of vertical and horizontal angulations, skull positions, and exposure times. It was found that any change in exposure conditions affected both the type of appearance (continuous, separated, diffuse, or unidentified) and the relative vertical position of the foramen. The radiographic position agreed with the actual position less than half the time regardless of technique, although the apparent diameter of the foramen was close to the true diameter.
在四个干燥颅骨上拍摄了具有各种垂直和水平角度、颅骨位置及曝光时间的全景片和根尖片，对颏孔的影像进行了研究。结果发现，曝光条件的任何变化都会影响颏孔的外观类型（连续、分离、弥散或无法识别）及其相对垂直位置。无论采用何种技术，放射影像位置与实际位置相符的情况不到一半，尽管颏孔的表观直径接近真实直径。
