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 greatest amount of fluoride recharge is seen with: \nSelect and explain. \nA. Composites, B. Resin modified glass ionomers, C. Resin composites, D. Polycarboxylates', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The ability of a restorative material to be recharged and serve as a fluoride reservoir depends on the type and permeability of the material, the frequency of fluoride exposure, and the concentration\xa0of the\xa0fluoridating\xa0agent.\xa0\nGlass ionomers and compomers are significantly better for recharging than resin-based\xa0composite\xa0materials,\xa0but\xa0this\xa0depends\xa0on\xa0the composition\xa0of\xa0the\xa0materials.\xa0Hybrid\xa0ionomers\xa0are\xa0often reported to have the highest capacity for recharging. It has also been reported that as the specimens age, their efficiencies of fluoride recharging decrease.\nWater soluble methacrylate-based monomers have been used to\xa0replace part\xa0of\xa0liquid component\xa0of\xa0conventional\xa0GIC resulting\xa0in\xa0a\xa0group\xa0of\xa0materials\xa0called\xa0resin-modified\xa0glass ionomer\xa0cements,\xa0also\xa0known\xa0as\xa0hybrid ionomer\xa0cement.\nRef: Phillip’s Science of Dental Materials ed 12 pg 334', 'role': 'assistant'}]