Question 1

Which of the following would you find in a local anesthetic syringe tray setup?

Accepted Answer

An anesthetic syringe tray setup would include a cartridge, needle stick protector, cotton swabs, needle, cotton tipped applicator, and topical anesthetic.

Question 2

Identify the gauge that indicates the smallest diameter (thinnest) needle.

Accepted Answer

The smallest diameter needle in this list is a 30 gauge. The higher the number, the thinner the number.

Question 3

Of the following, which must be disposed of in a sharps container?

Accepted Answer

All objects that are sharp and could cut or stick someone are considered sharps. These items include needles, anesthetic cartridges and disposable preloaded syringes must be disposed of in a sharps container.

Question 4

Following the use of nitrous oxide/oxygen sedation, what must be administered to the patient before he or she can be dismissed from the dental chair?

Accepted Answer

Oxygen must be administered to the patient prior to dismissal from the dental chair.

Question 5

What is the relationship between the thickness of the anesthetic needle and the gauge number of the needle?

Accepted Answer

The larger the gauge of the needle, the thinner the needle

Question 6

What is the purpose of a scavenger system on a nitrous oxide/oxygen sedation unit?

Accepted Answer

The purpose of a scavenger system on a nitrous oxide/oxygen sedation unit is to evacuate the excess gas that the patient does not breathe.

Question 7

Name the part of the anesthetic cartridge into which the needle is inserted.

Accepted Answer

The needle is inserted into the rubber diaphragm. The cartridge is the glass cartridge, and the threaded tip is the portion of the syringe into which the needle is secured. The harpoon inserts into the plunger.

Question 8

Identify the labeling that indicates a higher percentage of vasoconstrictor in a dental anesthetic cartridge.

Accepted Answer

The lower the second number, the higher the concentration or percentage of epinephrine.

Question 9

The length of a short needle used to administer a local anesthetic is inch.

Accepted Answer

The length of a short needle used to deliver dental anesthesia is 1 inch.

Question 10

Which needle length is commonly used to administer an injection of anesthetic on the maxillary arch?

Accepted Answer

A short needle is used to administer an injection of anesthetic on the maxillary arch. Short needles used for administering dental anesthesia are 1 inch in length.

Question 11

What is a Jenker?

Accepted Answer

These non-disposable items are used in one-handed recapping techniques. The Jenker is made of metal and has a low center of gravity for stability.

Question 12

Identify the gauge that indicates the largest diameter (thickest) needle.

Accepted Answer

The largest diameter needle in this list is a 25 gauge. The higher the number, the thinner the needle.

Question 13

The length of a long needle used to administer a local anesthetic is

Accepted Answer

The length of a long needle to deliver block anesthesia is 1 5/8 inches.

Question 14

Which guidelines are considered when choosing a local anesthetic?

Accepted Answer

The patient's health history and the procedure being performed must be considered when selecting which local anesthetic to use.

Question 15

Which needle length is commonly used to administer an injection of anesthetic on the mandibular arch for a block injection?

Accepted Answer

A long needle is needed to administer a block injection on the mandibular arch. Long needles for dental injections are 1 5/8 inches in length.

Question 16

In the administration of local anesthesia, a short needle typically is used for what type of injection?

Accepted Answer

Infiltration anesthesia for the maxillary arch requires a short needle.

Question 17

Which features make a syringe an aspirating syringe?

Accepted Answer

Syringes with harpoons are considered aspirating syringes.

Question 18

In the administration of local anesthesia, a long needle typically is used for what type of injection?

Accepted Answer

Block injection, for the mandibular arch, is accomplished with a long needle.

Question 19

Which of the following is a part of the anesthetic aspirating syringe?

Accepted Answer

In addition to the harpoon, piston rod, and finger grip, the syringe is composed of a threaded tip, thumb ring, barrel, and finger bar.

Question 20

Name the part of the anesthetic syringe that is inserted into the plunger.

Accepted Answer

The harpoon is inserted into the plunger. The aluminum cap holds the diaphragm in place. The protective cap protects the end of the needle and keeps the needle covered until use. The needle hub is the portion of the needle supporting the needle end.

Quiz 3: Local Anesthetic Syringecomponents and Nitrous Oxide Sedation