What is typically shown in occlusal X-rays?

Occlusal X-rays are designed to capture a larger area of the dental arch, focusing on either the maxilla or the mandible, often revealing the entire area of one dental arch in a single film. This type of radiograph is particularly useful for assessing the anatomical structure and alignment of the teeth, detecting potential abnormalities, such as cysts or tumors, and planning for dental procedures.

The primary purpose of occlusal X-rays is to provide a comprehensive view, making option B the most accurate representation of what these X-rays depict. They allow dental professionals to analyze the overall anatomy, including the relationship between teeth and surrounding structures, which is critical for diagnosis and treatment planning.

In contrast, other options do not accurately reflect the purpose or functionality of occlusal X-rays. A comprehensive view of the complete dental arch could suggest more than simply the major portion of either the maxilla or mandible. Only capturing the roots would limit the view and exclude critical structural and positioning information essential for a holistic assessment. Lastly, while occlusal X-rays can provide some insights into bite alignment, they are not primarily designed to illustrate this aspect as their main focus is on the broader anatomical features of the arches.