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': 'Polycarboxylate cement is used for: \nSelect and explain. \nA. Temporary restoration, B. Luting, C. Permanent restoration, D. Die material', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ZINC POLYCARBOXYLATE CEMENT\nAPPLICATIONS:\n\nPrimarily for luting permanent restorations.\nAs bases and liners.\nUsed in orthodontics for cementation of bands.\nAlso used as root canal fillings in endodontics.\n\nRef: Manappalil P: 95', 'role': 'assistant'}]