This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
The brushing method recommended for individuals with open interdental spaces with missing papillae and exposed root surfaces is, 
Select and explain. 
A. Fones method, B. Charters method, C. Bass Method, D. Smith method
B: Charters method
Answer: B: Charters method 
Explanation: None