secondary caries: Definition, Uses, and Clinical Overview
secondary caries means tooth decay that develops next to or underneath an existing dental restoration, such as a filling, inlay, onlay, or crown margin. It is also called “recurrent caries,” although the terms are sometimes used with slightly different meanings by different clinicians. It commonly appears at the edges (margins) where a restoration meets natural tooth structure. Dentists use the term in charting, diagnosis, and treatment planning when evaluating existing dental work.