A: MasterCard Contactless is a 'contactless' way to pay for purchases under R200. It's like having exact change wherever you go. A simple tap of your card, key fob or contactless-enabled mobile phone is all it takes to pay at the checkout.
Fillings. Fillings are used to repair a cavity in your tooth caused by decay. The most common type of filling is dental amalgam, made from a mixture of mercury and different metals. Dental amalgam fillings are often used on your back teeth as they are hard-wearing.
Dentists use amalgam (silver) tooth fillings because they're strong and they last a long time -- typically at least seven years, and usually longer. They also are the least expensive type of fillings. Dental amalgam is a mixture of metals; the fillings are known as silver fillings because of their silver color.Dentists often use them for fillings in the back teeth.entists may use amalgam or silver fillings to fix cavities in teeth. Amalgam fillings are strong and durable. They are generally more economical than tooth-colored fillings.