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 is a main ingredient of denture cleaning powder or tablets? \nSelect and explain. \nA. Hydrogen peroxide, B. Detergents, C. Sodium perborate, D. Alkaline compounds', 'role': 'user'}, {'content': 'Answer: C \nExplanation: All the denture cleansing powders and tablets contain detergent, flavouring agent, alkaline compounds and sodium perborate. The main component is sodium perborate. It decomposes in water to form a peroxide solution which inturn breaks down to liberate oxygen. These\xa0oxygen bubbles are the ones that remove the debri\xa0on the denture surface.\nPhillip’s 12th edition page 494', 'role': 'assistant'}]