Monsour P A
Oral Surg Oral Med Oral Pathol. 1986 Oct;62(4):468-70. doi: 10.1016/0030-4220(86)90299-9.
A modification of the standard bisecting-angle technique for periapical views of incisor teeth is presented. The technique involves a constant x-ray cone position, which is perpendicular to the floor for maxillary incisors and parallel to the floor for mandibular incisors. The periapical film is held between the incisor teeth as if it were an occlusal film for all anterior periapical radiographs. Tracings from lateral skull radiographs, taken of dried skulls of various ages, were used to determine the optimal angle between the periapical film and the floor to produce a dimensionally accurate periapical view of the incisors. The technique is suggested as an alternative to the standard bisecting-angle technique and the parallel technique. It is intended for anterior periapical radiographs when clinical conditions make conventional techniques difficult. For example, it can be used in very young children, patients with gagging problems, and patients with narrow lower jaws or large muscular tongues.
本文介绍了一种用于拍摄切牙根尖片的标准分角线技术的改良方法。该技术涉及恒定的X线球管位置，对于上颌切牙，球管垂直于地面；对于下颌切牙，球管平行于地面。在拍摄所有前牙根尖片时，根尖片像咬合片一样夹在切牙之间。通过对不同年龄干燥颅骨拍摄的头颅侧位片进行描图，以确定根尖片与地面之间的最佳角度，从而获得尺寸精确的切牙根尖片。该技术被建议作为标准分角线技术和平行技术的替代方法。当临床情况使传统技术难以实施时，它适用于前牙根尖片拍摄。例如，它可用于非常年幼的儿童、有恶心问题的患者以及下颌狭窄或舌头肌肉发达的患者。
