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': 'Interim obturator in cleft palate patients is placed at what time? \nSelect and explain. \nA. After 7 days of surgery, B. After 2-6 weeks of surgery, C. After 2-4 months of surgery, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Interim obturator:\n\nForm during 2nd phase of post-surgical prosthodontic treatment.\nFormed after 2-6 weeks postsurgically.\nMain objective is to provide patient comfort & easy function till healing.\nIn small defects, in which patient is able to function normally with immediate surgical obturator,\xa0this interim obturator is not necessary.\nFinal definitive prosthesis made\xa0after 3-6 months post-surgery (Third phase)', 'role': 'assistant'}]