Amalgam fillings are safe. A great deal of research has examined these fillings and found them to be an effective, long-lasting treatment for dental decay. Amalgam, or silver, fillings are made with mercury, silver, tin and copper.Click to see full answer. Also to know is, what is the best material for filling a tooth?Composite fillings are the most widely used dental filling material. They’re made of glass or quartz in resin. Your dentist may choose a composite filling if the size of your cavity is small to medium, or if your tooth gets a lot of chewing action.One may also ask, are white tooth fillings toxic? Dental resin composite that are tooth-colored materials have been considered as possible substitutes to mercury-containing silver amalgam filling. In vitro and in vivo studies have clearly identified that these components of restorative composite resins are toxic. Beside above, is dental filling Safe? FDA has reviewed the best available scientific evidence to determine whether the low levels of mercury vapor associated with dental amalgam fillings are a cause for concern. Based on this evidence, FDA considers dental amalgam fillings safe for adults and children ages 6 and above.Are Porcelain fillings better than silver?According to the American Dental Association, porcelain fillings are durable and many patients prefer them because they match their teeth better than fillings. However, porcelain fillings, on occasion, do not last as long as composite metal or silver fillings do.