A Brief History of the Anteroposterior Open-Mouth Radiograph

Radiographic Analysis of the Anterior to Posterior Open Mouth (APOM) Cervical Spine View: Frequency of Atlas Transverse Process Overlap of the Inferior Tip of the Mastoid Process

“…11,12 The APOM view was used because it provided the greatest number of radiographs where the right and left mastoid processes and transverse processes could be viewed. The distance between the inferior tip of the left mastoid processes and the superior and inferior margins of the left C1TPs was measured (Fig 1).…”