6. Gold alloy â gold-colored mixture of gold, copper and other metals, and is used mainly for crowns, fixed bridges and some partial denture framework. 1  Advantages â good resistance to further decay if fits well; excellent durability-does not fracture under stress; does not corrode in the mouth.or more than 150 years, dental fillings known as amalgams have been widely used to treat tooth decay. Amalgam fillings are made of a mixture of metals. The ingredients include equal parts of elemental mercury (43 to 54 percent), and an alloy powder (46 to 57 percent) mainly composed of silver, tin, copper.
limit order. Definition. An order to a broker to buy a specified quantity of a security at or below a specified price, or to sell it at or above a specified price (called the limit price). This ensures that a person will never pay more for the stock than whatever price is set as his/her limit.
A buy limit order ensures that negative slippage will not occur-the buyer will not get a worse price than he or she expects. Buy limit orders provide investors and traders with a means of precisely entering a position. For example, a buy limit order can be put in for $2.40 when a stock is trading at $2.45.If the price dips to $2.40, the order will automatically be executed. buy limit order allows traders and investors to specify the price that they are willing to pay for a security, such as a stock. By using a buy limit order, the investor is guaranteed to pay that price or better, meaning that he or she will pay the specified price or less for the purchase of the security.