How do dental caries typically appear on radiographs?

Dental caries typically appear as radiolucent areas on radiographs. This radiolucency is due to the demineralization of the tooth structure caused by the acids produced by bacteria in plaque. As the enamel and dentin break down, they become less dense than the surrounding healthy tooth structure, allowing X-rays to pass through more easily. Consequently, these areas appear darker on the radiograph compared to the surrounding tooth structure, which appears more radiopaque. This characteristic is crucial for dental professionals to diagnose and assess the extent of caries during routine examinations. Understanding how caries appear on radiographs is essential for effective treatment planning and patient education.