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': 'Most common coupling agent used in composite is: \nSelect and explain. \nA. Organosilanes, B. Zirconates, C. Titanates, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Coupling agent\n\nA bonding agent applied to the surfaces of reinforcing particles (filler) to ensure that they are chemically bonded to the resin matrix. Organo-silane compounds are the more common class of dental composite coupling agents.\n\n\nPhillips 12th edition page 275', 'role': 'assistant'}]