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
[{'content': 'If hypersensitivity develops in a glass ionomer filled tooth, indicated treatment: \nSelect and explain. \nA. Extraction, B. Remove the restoration and place a sedative dressing, C. Remove the restoration perform pulpectomy, D. No treatment is necessary', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]