Glass ions have good hardness, poor aesthetics and easy wear, and can only be used after 24 hours. 3M resin is a kind of fluid resin, which will solidify immediately, with very fine molecular particles, high density and relatively wear resistance. Japanese pine wind is the best resin material, which is brightly colored, filled layer by layer, firmer and releases fluorine for a long time, which can effectively prevent the occurrence of secondary caries. If the economic capacity allows Japan to relax, it is definitely the best choice. I hope I can help you.