Question 1

Calculate the maximum dose of 2% lidocaine for a patient weighing 180 lb.Given: 6.5 cartridges.

Accepted Answer

A)  Seven cartridges 
B)  Six cartridges 
C)  Eight cartridges 
A)  Seven cartridges 
B)  Six cartridges 
C)  Eight cartridges C

Question 2

Which of the following injections is the best choice to deliver anesthesia to the MB root of the first molar?

Accepted Answer

A)  MSA 
B)  ASA 
C)  PSA 
D)  Maxillary infiltration 
A)  MSA 
B)  ASA 
C)  PSA 
D)  Maxillary infiltration A

Question 3

Which of the following is (are)true about topical anesthetics?

Accepted Answer

A)  Topical anesthetics are most effective when placed on dry tissue for 1 to 2 minutes. 
B)  When applied properly,topical anesthetics can penetrate 2 mm into the tissue. 
C)  Topical anesthetics have very limited effect on keratinized tissue,such as the palate. 
D)  All of the above are true. 
E)  Both A and C are true. 
A)  Topical anesthetics are most effective when placed on dry tissue for 1 to 2 minutes. 
B)  When applied properly,topical anesthetics can penetrate 2 mm into the tissue. 
C)  Topical anesthetics have very limited effect on keratinized tissue,such as the palate. 
D)  All of the above are true. 
E)  Both A and C are true. E

Question 4

Which division of the trigeminal nerve gives off the infraorbital nerve?

Accepted Answer

A)  Mandibular division 
B)  Ophthalmic division 
C)  Maxillary division 
A)  Mandibular division 
B)  Ophthalmic division 
C)  Maxillary division

Question 5

From the following list,which statement would be a good choice when communicating with a client during anesthetic delivery?

Accepted Answer

A)  "You're doing great.We're almost finished." 
B)  "This will only hurt a little." 
C)  "Take a nice deep breath.We are going to begin." 
D)  A and C 
E)  All of the above 
A)  "You're doing great.We're almost finished." 
B)  "This will only hurt a little." 
C)  "Take a nice deep breath.We are going to begin." 
D)  A and C 
E)  All of the above

Question 6

A needle of which of the following gauges would be most likely to deflect easily when traveling through tissue?

Accepted Answer

A)  25 gauge 
B)  27 gauge 
C)  30 gauge 
A)  25 gauge 
B)  27 gauge 
C)  30 gauge

Question 7

Which of the following anesthetic agents is preferred for a dental hygiene procedure expected to last 1.5 hours?

Accepted Answer

A)  2% Mepivacaine 
B)  Etidocaine 1.5%,epinephrine 1:200,000 
C)  Procaine 2%,propoxycaine 0.4%,levonordefrin 1:20,000 
D)  2% Lidocaine,epinephrine 1:100,000 
A)  2% Mepivacaine 
B)  Etidocaine 1.5%,epinephrine 1:200,000 
C)  Procaine 2%,propoxycaine 0.4%,levonordefrin 1:20,000 
D)  2% Lidocaine,epinephrine 1:100,000

Question 8

Which of the following influence(s)patient comfort when local anesthetics are delivered?

Accepted Answer

A)  Needle sharpness 
B)  Appropriate explanation of procedure 
C)  Warmed anesthetic cartridge 
D)  A and B 
E)  All of the above 
A)  Needle sharpness 
B)  Appropriate explanation of procedure 
C)  Warmed anesthetic cartridge 
D)  A and B 
E)  All of the above

Question 9

When the armamentarium is prepared for a maxillary infiltration of tooth 8,the needle bevel should be oriented in which direction?

Accepted Answer

A)  Toward the syringe window 
B)  It doesn't matter which direction the bevel is oriented for this injection 
C)  Opposite of the syringe window 
A)  Toward the syringe window 
B)  It doesn't matter which direction the bevel is oriented for this injection 
C)  Opposite of the syringe window

Question 10

On examination of a local anesthetic cartridge,you notice that the rubber stopper is extruded.What is the most likely cause of this irregularity?

Accepted Answer

A)  Diffusion of an unknown liquid has occurred. 
B)  The cartridge was stored above the recommended temperature. 
C)  The contents of the cartridge have expired. 
D)  Both A and B are likely causes. 
A)  Diffusion of an unknown liquid has occurred. 
B)  The cartridge was stored above the recommended temperature. 
C)  The contents of the cartridge have expired. 
D)  Both A and B are likely causes.

Question 11

An example of an absolute contraindication to vasoconstrictors is which of the following?

Accepted Answer

A)  Pregnancy 
B)  Sulfite allergy 
C)  Heart palpitations 
D)  Hypertension 
A)  Pregnancy 
B)  Sulfite allergy 
C)  Heart palpitations 
D)  Hypertension

Question 12

Which of the following anesthetic agents would be a good choice for a patient with a documented allergy to sulfites?

Accepted Answer

A)  2% Mepivacaine,levonordefrin 1:20,000 
B)  2% Lidocaine,epinephrine 1:100,000 
C)  3% Mepivacaine 
D)  4% Articaine,epinephrine 1:100,000 
A)  2% Mepivacaine,levonordefrin 1:20,000 
B)  2% Lidocaine,epinephrine 1:100,000 
C)  3% Mepivacaine 
D)  4% Articaine,epinephrine 1:100,000

Question 13

Which portion(s)of the anesthetic molecule is necessary for the agent to travel to the site of action?

Accepted Answer

A)  Aromatic ring 
B)  Intermediate chain 
C)  Amino group 
D)  All of the above 
E)  A and C 
A)  Aromatic ring 
B)  Intermediate chain 
C)  Amino group 
D)  All of the above 
E)  A and C

Exam 39: Local Anesthesia

Calculate the maximum dose of 2% lidocaine for a patient weighing 180 lb.Given: 6.5 cartridges.

Which of the following injections is the best choice to deliver anesthesia to the MB root of the first molar?

Which of the following is (are)true about topical anesthetics?

Which division of the trigeminal nerve gives off the infraorbital nerve?

From the following list,which statement would be a good choice when communicating with a client during anesthetic delivery?

A needle of which of the following gauges would be most likely to deflect easily when traveling through tissue?

Which of the following anesthetic agents is preferred for a dental hygiene procedure expected to last 1.5 hours?

Which of the following influence(s)patient comfort when local anesthetics are delivered?

When the armamentarium is prepared for a maxillary infiltration of tooth 8,the needle bevel should be oriented in which direction?

On examination of a local anesthetic cartridge,you notice that the rubber stopper is extruded.What is the most likely cause of this irregularity?

An example of an absolute contraindication to vasoconstrictors is which of the following?

Which of the following anesthetic agents would be a good choice for a patient with a documented allergy to sulfites?

Which portion(s)of the anesthetic molecule is necessary for the agent to travel to the site of action?

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