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': 'Which of the following cement is called as Artificial dentin? \nSelect and explain. \nA. Type 2 GIC, B. Silicophosphate, C. Amalgam, D. Zinc phosphate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Coefficient of thermal expansion\xa0of silicophosphate matches with dentin.\nWhile of type 2 GIC with enamel.', 'role': 'assistant'}]