WREB REVIEW LA QUESTIONS AND ANSWERS
How much anesthetic should be deposited when administering the PSA? - Answers-0.9-
1.8 ml
Hematoma - Answers-the collection of blood under the skin as the result of blood
escaping into the tissue from damaged blood vessels. bruise
What is the most common medical emergency in dentistry? - Answers-Vasopressor
syncope or fainting
What does the mental nerve block anesthetize? - Answers-1rst premolar, buccal
mucous membrane to midline , skin of the lower lip
What does the Buccal nerve block anesthetize? - Answers-soft tissue buccal to the
molars
What is the most common cause of toxicity to LA - Answers-rapid intrvascular injection
How much of the nerve must be bathed in LA to achieve anesthesia? - Answers-6-
10mm
Which classification of local anesthetic agents is the most vasodilating? - Answers-
Esters
What type of effect do local anesthetics have on the central nervous system - Answers-
They depress the CNS
Why are vasocontrictors added to local anesthetics? - Answers-To counteract the
vasodilating effects of the local anesthetic
The metabolic by-product responsible for allergic reactions to the ester classification of
anesthetics is: - Answers-para-aminobenzoic acid
What is the brand name for the vasoconstrictor epinepherine? - Answers-Adrenalin
Amides are biotransformed primarily in the: - Answers-Liver
Determine the concentration of the local anesthetic agent in a 2% solution of lidocaine -
Answers-20mg/ml
Which gauge needle has the smallest diameter? - Answers-a 30 gauge
Bubbles of approximately 1-2mm found in a cartridge are: - Answers-not a concern
For adequate aspiration, the thumb ring should be pulled back: - Answers-1-2mm
How much anesthetic should be deposited when administering the PSA? - Answers-0.9-
1.8 ml
Hematoma - Answers-the collection of blood under the skin as the result of blood
escaping into the tissue from damaged blood vessels. bruise
What is the most common medical emergency in dentistry? - Answers-Vasopressor
syncope or fainting
What does the mental nerve block anesthetize? - Answers-1rst premolar, buccal
mucous membrane to midline , skin of the lower lip
What does the Buccal nerve block anesthetize? - Answers-soft tissue buccal to the
molars
What is the most common cause of toxicity to LA - Answers-rapid intrvascular injection
How much of the nerve must be bathed in LA to achieve anesthesia? - Answers-6-
10mm
Which classification of local anesthetic agents is the most vasodilating? - Answers-
Esters
What type of effect do local anesthetics have on the central nervous system - Answers-
They depress the CNS
Why are vasocontrictors added to local anesthetics? - Answers-To counteract the
vasodilating effects of the local anesthetic
The metabolic by-product responsible for allergic reactions to the ester classification of
anesthetics is: - Answers-para-aminobenzoic acid
What is the brand name for the vasoconstrictor epinepherine? - Answers-Adrenalin
Amides are biotransformed primarily in the: - Answers-Liver
Determine the concentration of the local anesthetic agent in a 2% solution of lidocaine -
Answers-20mg/ml
Which gauge needle has the smallest diameter? - Answers-a 30 gauge
Bubbles of approximately 1-2mm found in a cartridge are: - Answers-not a concern
For adequate aspiration, the thumb ring should be pulled back: - Answers-1-2mm
