Armamentarium

Question 1

What are the 5 types of syringes used in dentistry?

Answer 1

1-Breech-loading, metallic, aspirating, cartridge type
2-Breech-loading, metallic, self-aspirating, cartridge type
3-Pressure-type
4-Needleless-type
5-C-CLAD-Type

Question 2

Which syringe type works like a caulk gun and allows for increased pressure during injection?

Answer 2

Pressure syringes

*Useful for PDL/intraligamentary injections

Question 3

Which syringe type injects liquid into target tissue at high pressure?

Answer 3

Needleless injector

Question 4

What are the 3 common needle lengths?

Answer 4

1-Ultra-short (10-12 mm)
2-Short (20-25 mm)
3-Long (30-25 mm)

Question 5

What are the 3 most commonly used needle gauges in dentistry?

Answer 5

1-30-gauge short
2-27-gauge long
3-25 gauge (long or short)

*Bigger number means smaller diameter. “Larger or smaller” refers to lumen diameter

Question 6

What type of needle should be used when needle deflection is a concern?

Answer 6

Larger gauge

*(can use the Bi-ritational insertion technique (BRIT) to minimize as well)

Question 7

How long should topical anesthetic be placed on tissues?

Answer 7

Apprx. 60 Sec (2-3 minutes can lead to soft tissue irritation

Question 8

How much does a typical dental carpule hold?

Answer 8

1.7-1.8 mL

Question 9

Passing the syringe from one side of the patient to the other should be done above or below what?

Answer 9

The line of sight

Question 10

What are basic injection technique points to keep in mind?

Answer 10

1-Keep tissue taught
2-Inject a few drops follow by aspiration (retract slightly and try again if pink tinge appears)
3-Inject slower if patient seems to be in pain

Question 11

What is the most common scenario in which a needle would break?

Answer 11

Using a pre-bent, short, 30 gauge needle inserted to the hub in the soft tissue for an IA

Question 12

What local anesthesia complication is characterized by days-months of numbness?

Answer 12

Prolonged anesthesia or paresthesia. Mechanical trauma to the nerve

Question 13

What complication may occur when the infraorbital nerve block is given or if the anesthetic is deposited into the parotid gland during an IA?

Answer 13

Facial nerve paralysis

Question 14

A prolonged tetanic spasm of the jaw muscles, thus restricting normal opening is called what?

Answer 14

Trismus

*may be caused by trauma to muscles or blood vessels in the infra temporal fossa

Question 15

What may result from a blood vessel being nicked during LA administration?

Answer 15

Hematoma