National Dental Assisting Examining Board (NDAEB) Practice Exam

When is the use of a topical anesthetic especially beneficial?

1. After the procedure is completed

2. During patient consultation

3. Before placing a rubber dam clamp

4. Regardless of the procedure

The correct answer is: Before placing a rubber dam clamp

The use of a topical anesthetic is especially beneficial before placing a rubber dam clamp. This is because the application of a topical anesthetic can help minimize discomfort or pain that a patient might experience during the placement of the clamp on the tissue. The rubber dam clamp can exert pressure on the gums, which may cause sensitivity. By applying a topical anesthetic beforehand, the dentist can enhance patient comfort and reduce anxiety associated with the procedure. This practice is particularly important in cases where the tissue is already sensitive due to inflammation or previous dental work. Using topical anesthetic after the procedure, during patient consultation, or regardless of the procedure does not specifically address the immediate comfort needs of the patient during the placement of a rubber dam clamp, where discomfort is a significant concern.