FDA considers dental amalgam fillings safe for adults and childr

https://www.fda.gov/MedicalDevices/ProductsandMedicalProcedures/DentalProducts/DentalAmalgam/ucm171094.htm

 

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• 我是担心crown的材料。现在大多是用porcelain/ceramic substrate。 可我一查材料，还像也让人担心 -kathyzh- ♀ (398 bytes) () 11/21/2017 postreply 05:33:58