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': 'The advantage of titanium over other base metal alloys is \nSelect and explain. \nA. Low weight, B. Low cost, C. Low strength, D. Low melting point', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Titanium\n\nTitanium is a\xa0light-weight metal with\xa0low density and\xa0the only metal that may be used in an almost pure form.\nIt has a very high melting point (1668°C) in comparison with the alloys used in dentistry.\nIt has relatively low elastic modulus and a very low coefficient of thermal expansion.\nIt is highly corrosion resistant at mouth temperature and is regarded as biocompatible.\nIt is frequently used for the construction of implants.\nThe most frequently used titanium alloy in the medical and dental field\xa0consists of\xa090% Titanium , 6% Aluminum , and \xa04% Vanadium.', 'role': 'assistant'}]