Dental caries is an ancient disease that has been found in skulls from all over the world where the primitive man lived in isolated areas and the diet lacked refined and carbohydrate-rich food. Root caries is a lesion located on the root surface of a tooth, usually close to or below the gingival margin, and is the major cause of tooth loss in older adults, and tooth loss is the most significant oral health-related negative variable of quality of life for the elderly population who get their teeth extracted and replaced with removable prostheses. At present, root caries is becoming a new area...