HOSA Dental Terminology Practice

Which type of radiograph provides an extraoral view of the bones and tissues of the head?

1. Cephalometric radiograph

2. Periapical radiograph

3. Bitewing radiograph

4. Pano­ramic radiograph

The correct answer is: Cephalometric radiograph

The cephalometric radiograph is specifically designed to provide an extraoral view of the bones and soft tissues of the head. This type of imaging is particularly valuable in orthodontics and oral surgery, as it allows practitioners to analyze the skeletal structure and relationship between the teeth and jaw. The cephalometric view captures a lateral projection of the head, enhancing the ability to assess dental and facial relationships, growth patterns, and treatment planning. Other types of radiographs serve different purposes: periapical radiographs focus on individual teeth and their surrounding structures, bitewing radiographs are primarily used to detect interproximal caries and assess bone levels between adjacent teeth, and panoramic radiographs provide a broad view of the entire mouth—inclusive of both jaws, teeth, and surrounding structures—but are less detailed in terms of the specific skeletal relationships that a cephalometric radiograph offers.