Root caries are typically described as which shape and commonly occur in which area?

• A. Linear on occlusal surfaces of molars
• B. Conical on anterior teeth
• C. Saucer-shaped, common in elderly, usually buccal premolars
• D. Radiopaque on radiographs

Answer: (C)

Root caries involve exposed root surfaces and typically appear as saucer-shaped, cupped-out lesions in dentin and cementum. They’re most common in older adults with gingival recession, and you’ll usually find them on the buccal surfaces of premolars. This shallow, hollowed-out pattern reflects how demineralization progresses into the softer root dentin. The other descriptions don’t fit: caries on root surfaces aren’t linear on occlusal surfaces, a conical shape isn’t typical for root caries, and caries are radiolucent on radiographs rather than radiopaque.