👉 Non-calcarious is a medical term that refers to a type of dental caries (caries) where the tooth is not affected by the acid produced by plaque. Non-calcarious teeth are often referred to as "dry" or "hard" because they do not have any soft tissue around them, like enamel. This condition can be caused by several factors such as lack of proper brushing and flossing habits, excessive grinding of teeth, or poor oral hygiene practices.