Dental Assistant Practice Exam

Which imaging technique is best for viewing the spatial relationships of teeth?

1. Bitewing radiograph

2. Periapical radiograph

3. Panoramic radiograph

4. Computed tomography

The correct answer is: Panoramic radiograph

The best imaging technique for viewing the spatial relationships of teeth is the panoramic radiograph. This type of imaging provides a broad view of the entire mouth, including the teeth, jaws, and surrounding anatomical structures, all in a single image. Panoramic radiographs are particularly useful in evaluating the alignment of the teeth, jaw relationships, and identifying any abnormalities in the oral cavity, such as impacted teeth or lesions. This technique captures a wide area, making it easier for dental professionals to assess the positioning and relationship between teeth in both dental arches, which is valuable for treatment planning in orthodontics and the extraction of teeth. The ability to visualize all teeth and their relationships in a comprehensive manner sets panoramic radiographs apart for this specific purpose. In contrast, other imaging techniques like bitewing and periapical radiographs focus on a limited area. Bitewing radiographs are primarily used to detect cavities between teeth and assess the bone levels for periodontal disease, while periapical radiographs are used to examine the structure of specific teeth and their surrounding tissues, providing limited spatial information. Computed tomography, on the other hand, gives detailed cross-sectional views and is more complex and typically reserved for specific diagnoses rather than routine assessments of spatial relationships in dentistry.