What is a common procedure that utilizes a round bur?

A round bur is commonly used for opening teeth for restoration procedures. This particular bur is designed to remove decay and prepare the cavity by drilling into the tooth structure, making it easier for the dentist to access the affected area. The shape of the round bur allows for a smooth and effective penetration into the tooth, which is essential when creating an opening for further restorative work, such as filling, crown placement, or other treatments.

In the context of dental procedures, the other choices serve different purposes but do not primarily involve the round bur. For example, filling cavities typically involves using various instruments and burs, but the initial access to the cavity is usually created with a larger or differently shaped bur. Establishing margins for fillings or crowns might involve finishing burs or diamond burs, which have specific designs suited for creating precise edges or surfaces. Creating retention for crowns often requires the use of special burs to shape the preparation for better fitting and engagement of the crown; these are generally not round burs. Therefore, the specific use of the round bur aligns most accurately with opening teeth for restoration.