Even thought 50-72% of the population may be missing the MSA nerve, we still administer the MSA injection because we have no way of knowing if it is missing or not.

What injection(s) would be necessary to administer in order to totally anesthetize tooth #21 for an extraction?

A dental hygienist administers an inferior alveolar nerve block (IANB) injection on the left side using 1 carpule of lidocaine 2% 1:100,000. All teeth are numb except the left central incisor. What is the most likely explanation for this?

Which of the following is most likely to cause an allergic reaction?

What does the gauge of the needle refer to?

Which solubility factor primarily determines an anesthetic agent’s potency and effectiveness?

In an attempt to catch the anesthetic dripping from your needle prior to an injection, you touch the needle to a sterile gauze 2 x 2. What should you do?

An anesthetic agent that contains a vasoconstrictor is _______________________ than an anesthetic agent without a vasoconstrictor.

Locking forceps or hemostats are an important part of local anesthesia armamentarium and are required by WREB.

Anesthetics decrease or limit the sensation of pain by which of the following?