The Metals in Porcelain Bonding Alloys Are Selected and Blended

question 9

Multiple Choice

The metals in porcelain bonding alloys are selected and blended so they have which of the following properties?

• A) They have the ability to withstand the low temperatures at which porcelain is fired without distorting or melting.
• B) They have a higher thermal expansion than gold alloys used for all-metal crowns.
• C) Small amounts of metals such as indium, iron, tin, or gallium are added to form oxides on the metal surface to which the porcelain will bond.
• D) Titanium and titanium alloys are added for easy handling.

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