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 component acts as surface coating agent and transfer load from weaker matrix to stronger stress bearing components: \nSelect and explain. \nA. Silane coupling agent, B. Filler, C. Matrix, D. Adhesives', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Coupling agent :\xa0A bonding agent applied to the surfaces of reinforcing particles (filler) to ensure that\xa0they\xa0are\xa0chemically\xa0bonded\xa0to\xa0the\xa0resin\xa0matrix. Organo-silane compounds are the more common class of dental composite coupling agents. Although titanates and zirconates can be used as coupling agents, organosilanes—such as γ-methacryloxypropyl tri-methoxysilane—are used most commonly.\u200b\nPhillips 12 ed page no. 275,286', 'role': 'assistant'}]