Final answer:
Acrylic is one of the two most common materials used for custom provisional coverage in dentistry, along with composite resin.
Step-by-step explanation:
The correct answer is Acrylic.
Acrylic is one of the two most common materials used for custom provisional coverage in dentistry. It is a type of plastic that is easy to manipulate and has good aesthetic properties. Acrylic temporaries are often used to protect teeth and provide a temporary solution until a permanent restoration can be done.
Some dentists may also use composite resin for provisional coverage, but acrylic is more commonly used.