Which injection might the patient feel a “lingual shock” or electric zing in tongue during injection?

Why is this injection labeled as incorrect? There may be more than one answer. local anesthesia 4.jpg

Which of the following is an advantage of having a local anesthetic agent metabolized in the plasma and liver?

You are administering the IA block, and you are at a depth of about 20-25mm and not contacting bone at injection site. Which of the following is the appropriate correction to be made?

Choose the statement that is correct/true.

Needle recapping devices and PPE are an example of which type of prevention?

Epinephrine and Levonordefrin are vasoconstrictors used in dental local anesthetics. Epinephrine is more potent than Levonordefrin.

If a child weighs 150 pounds, they are okay to have the same MRD as an adult as their weight is like that of an adult.

Mark all of the following conditions that are contraindicated for Nitrous oxide administration.

What is the only true contraindication to vasoconstrictors?