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 cements is most kind to pulp? \nSelect and explain. \nA. Glass ionomer, B. Polycarboxylate, C. Silicate, D. Resin cement', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Polycarboxylate cements produce minimal irritation to the pulp. The larger size of the polyacrylic acid molecules compared with those of phosphoric acid limits acid penetration into the dentinal tubules, contributing to the excellent bio-compatibility and lack of postoperative sensitivity of polycarboxylate cement.\nRef: Manappalil P: 96', 'role': 'assistant'}]