A '#' symbol on a dental chart denotes which condition?

• A. Caries
• B. Fracture
• C. Mobility
• D. Occlusion

Answer: (B)

In dental charting, marks and symbols are used to quickly convey the status of each tooth. A hash symbol placed on a tooth is used to show a fracture in that tooth—an actual crack or break in the tooth structure. This helps the clinician recognize that there is a potential structural compromise and plan appropriate care, such as further investigation with radiographs, vitality tests, or restorative or preventative treatment to protect the tooth.

This symbol is not used to indicate caries, mobility, or occlusion, which are shown with different marks or notations in charting. While charting conventions can vary between practices, the hash sign is commonly understood to represent a fracture.