Local Anesthesia Final Review
All vasoconstrictors in dentistry stimulate adrenergic receptors.
True
Vasoconstrictors have been associated with more drug interactions than any other
drugs in dentistry.
True
High blood pressure is always a contraindication to the use of vasoconstrictors in
dentistry.
False
Levonordefrin is one-tenth as potent as epinephrine.
False
The two vasopressors routinely used in dental local anesthetic drugs in North
America are ________ and ________.
Epinephrine and neo-cobefrin
Levonordefrin is a stronger vasoconstrictor compared to epinephrine.
,False
Which formulation of local anesthetic drug with levonordefrin is available in the
United States today?
2% mepivacaine, 1:20,000 levonordefrin
When a nerve is in its resting state, the:
Na+ is concentrated outside the cell
What injection will anesthetize the upper central incisors and canines?
Anterior superior alveolar nerve
Local anesthetic causes cell permeability to decrease, preventing ______ from
entering into the nerve cell.
Sodium
Which of the following anesthetics has the shortest duration when administering a
local anesthetic injection?
Mepivacaine 3%
, For what purpose is epinephrine added to either prilocaine or lidocaine local
anesthetic agent?
-Prolongation of anesthesia
-Reduction of hemorrhage in field of operation
-Constriction of blood vessels in area of injection
-Prevention of toxic effects from too rapid absorption
Which of the following vasoconstrictor agents is used with mepivacaine
(Carbocaine) 3%?
Neo-Cobefrin
The potency of an anesthetic agent is primarily a result of its:
Lipid solubility
Sodium bisulfite is added to cartridges of anesthetic to increase the stability of the:
Vasoconstrictor
The maxillary division of the trigeminal nerve is:
Sensory only
Saltatory conduction refers to:
All vasoconstrictors in dentistry stimulate adrenergic receptors.
True
Vasoconstrictors have been associated with more drug interactions than any other
drugs in dentistry.
True
High blood pressure is always a contraindication to the use of vasoconstrictors in
dentistry.
False
Levonordefrin is one-tenth as potent as epinephrine.
False
The two vasopressors routinely used in dental local anesthetic drugs in North
America are ________ and ________.
Epinephrine and neo-cobefrin
Levonordefrin is a stronger vasoconstrictor compared to epinephrine.
,False
Which formulation of local anesthetic drug with levonordefrin is available in the
United States today?
2% mepivacaine, 1:20,000 levonordefrin
When a nerve is in its resting state, the:
Na+ is concentrated outside the cell
What injection will anesthetize the upper central incisors and canines?
Anterior superior alveolar nerve
Local anesthetic causes cell permeability to decrease, preventing ______ from
entering into the nerve cell.
Sodium
Which of the following anesthetics has the shortest duration when administering a
local anesthetic injection?
Mepivacaine 3%
, For what purpose is epinephrine added to either prilocaine or lidocaine local
anesthetic agent?
-Prolongation of anesthesia
-Reduction of hemorrhage in field of operation
-Constriction of blood vessels in area of injection
-Prevention of toxic effects from too rapid absorption
Which of the following vasoconstrictor agents is used with mepivacaine
(Carbocaine) 3%?
Neo-Cobefrin
The potency of an anesthetic agent is primarily a result of its:
Lipid solubility
Sodium bisulfite is added to cartridges of anesthetic to increase the stability of the:
Vasoconstrictor
The maxillary division of the trigeminal nerve is:
Sensory only
Saltatory conduction refers to:
