5. Local Anesthesia Armanentarium

Question 1

Needles
Sterile ____ needles should be used.

If multiple injections are to be administered, needles should be changed after ____ or four insertions in a single patient.

Needles must never be used on more than ____ patient.

Needles should not be inserted into tissue to their ____ unless it is absolutely necessary for success of the injection.

Answer 1

disposable
three
one
hub

Question 2

COLOR CODE

30 GA SHORT: \_\_\_\_
30 GA EXTRA SHORT: \_\_\_\_
27 GA LONG: \_\_\_\_
27 GA SHORT: \_\_\_\_
25 GA LONG: \_\_\_\_
25 GA SHORT: \_\_\_\_

Answer 2

blue
purple
yellow
orange
red
pink

Question 3

Needles

Do not change a needles ____ while it is still in the tissue
Never ____ a needle against resistance.
Needles should remain ____ until used and made safe immediately on withdrawal.
Needles should be discarded and destroyed after use, to prevent injury or refuse by unauthorized persons.

Answer 3

direction
force
capped

Question 4

The following injection techniques are listed with their recommended needles (for the
average-size adult)

Inferior alveolar nerve block-  \_\_\_\_
Gow-gates man nerve block - \_\_\_\_
Vazirani-akinose man nerve - \_\_\_\_
buccal nerve block - \_\_\_\_
mental/incisive nerve block - \_\_\_\_
supraperiosteal (local infiltration) - \_\_\_\_
posterior superior alveolar nerve - \_\_\_\_

Answer 4

25 gauge long
25 gauge long
25 gauge long

27 guage short
27 guage short
27 guage short
27 guage short

Question 5

Needles

Infraorbital nerve - \_\_\_\_
Maxillary nerve block - \_\_\_\_
Infiltration for hemostasis - \_\_\_\_
Periodontal ligament injection- \_\_\_\_
Intraseptal injection - \_\_\_\_
Intrapulpal injection - \_\_\_\_

Answer 5

25 gauage long
25 gauage long
27 gauge short
27 gauge short
27 gauge short
27 gauge short

Question 6

Injection Needles

Needles should not be inserted into tissue up to ____
Never change a needle’s ____ while it is still in the tissue
Never force a needle again ____

Answer 6

hub
direction
resistance

Question 7

Local Anesthetic Cartridge
Local anesthetic \_\_\_\_
Vasco constrictor
Preservative for \_\_\_\_
(sodium metabisulfite) 
Sodium \_\_\_\_
Distilled \_\_\_\_

N.B. methylparaben removed as per FDA in 1984 (used only in articaine)

Answer 7

drug
vasoconstrictor
chloride
water

Question 8

●
100% positive aspirations were achieved with ____-gauge needles

87% positive aspirations were achieved from blood vessels with ____ gauge needles
●
-
2% positive aspirations were achieved from blood vessels with ____ gauge needles
●
-
gauge needles

Answer 8

25
27
30

Question 9

Percentages of dentists who aspirate prior to injection

Inf alveolar nerve block
Always: \_\_\_\_
Sometimes:
Rarely:
Never: \_\_\_\_

Max infil
Always: \_\_\_\_
Sometimes:
Rarely:
Never: \_\_\_\_

Answer 9

63. 2
64. 2
65. 2
66. 3

Question 10

● ● ● ● ●
Use a \_\_\_\_ sharp needle
Check the flow of anesthetic solution 
\_\_\_\_ anesthetic cartridge/syringe Position patient
\_\_\_\_ tissue
Apply topical anesthetic

Answer 10

sterilized
warm
dry