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,Which of the following concentrations of epinephrine are available in injectable lidocaine solution for
dental anesthesia - Correct Answer: 1:100,000
A 45-year-old patient is taking the antidepressant amitriptyline (Elavil). He is scheduled for periodontal
surgery. Which of the following local anesthetic regimens is safe for this patient? - Correct Answer:
maximum of two cartridges of lidocaine 2% with 1:100,000 EPI
Articaine was FIRST introduced in the United States in: - Correct Answer: 2000
Which of the following channels does the local anesthetic molecules block once inside the nerve? -
Correct Answer: sodium
which of the following diseases requires a reduction in dosage of lidocaine? - Correct Answer:
hepatitis
Which of the following steps is important to avoid intravascular administration of a local anesthetic -
Correct Answer: using an aspiration syringe
Which of the following anesthetics has the longest duration of action after an infiltration? - Correct
Answer: articaine
Which of the following anesthetics has a pregnancy category of B? - Correct Answer: mepivicaine
Which of the following anesthetics is used when prolonged anesthesia is required? - Correct Answer:
bupivicaine 0.5 %
Which of the following adverse effects can occur with the use of Prilocaine? - Correct Answer:
methemoglobinemia
Which of the following % solutions of mepivicaine does NOT contain a vasoconstrictor? - Correct
Answer: 3%
, Which of the following local anesthetics consistently produces vasoconstriction? - Correct Answer:
cocaine
What management should be taken when selecting a local anesthetic in a patient that is stable on
levothyroxine (Synthroid) - Correct Answer: no precautions are necessary
Which of the following events can occur if epinephrine is injected in a patient who has just sniffed
cocaine the morning of the dental appointment? - Correct Answer: sudden death by cardiac arrest
The duration of action of an anesthetic depends on the - Correct Answer: time it stays in the nerve
In healthy adult patients, the maximum safe dose (in mgs) of epinephrine in a local anesthetic is: -
Correct Answer: 0.20
Mepivicaine has more vasodilatory activity than lidocaine. - Correct Answer: false
Lidocaine is a vasodilator. - Correct Answer: true
Cocaine is a vasodilator. - Correct Answer: F
The MOST widely used local anesthetic in dentistry is novacaine. - Correct Answer: F
Which of the following adverse effects is seen when dopamine receptors are blocked by antipsychotics?
- Correct Answer: oral dyskinesia
Tricyclic antidepressants block which of the following neurotransmitters from reuptake into the neuron?
- Correct Answer: NE and serotonin
Which of the following drug classes is indicated for the management of noctural bruxism? - Correct
Answer: antidepressants