1 for specific request mail
CDCA local anesthesia exam review Questions and
Correct Answers | Latest Update
which has thicker cortical plate, maxillary or mandibular? Ans:
mandibular (this decreased the amount of the local anesthesia molecules
that can penetrate to nerves during infiltration injections)
due to the thickness of cortical bone, which is a good option for local
anesthetic in the mandibular arch during infiltrations? Ans: Articaine
(Septocaine) is sometimes effective for mand. infiltrations (4% vs. 2% for
lidocaine) due to the increased number of molecules
Assignment Expert
hematomas are most common with which type of injection, and why?
Ans: PSA due to nicking a vessel in the pterygoid plexus of veins
Guru01 - Stuvia
what is the TX for a hematoma? Ans: pressure, cold compresses on/off,
NSAIDS, and time.
2026
a positive aspiration when administering a PSA is due to what? Ans:
aspirating hemorrhage caused by injection
©
what are the three most common locations for hematomas to occur? Ans:
1. PSA
2. IA
3. mental
blanching of the tissue following/during an injection is caused by what?
Ans: vasospasm/vasoconstriction caused by epinephrine or brushing
against autonomic nerves stimulation vasospasm
the pterygomandibular space/triangle is bordered by what anatomical
structures? Ans: ramus, lateral pterygoid muscle, and medial pterygoid
muscle
, 2 for specific request mail
the pterygomandibular space/triangle is identified intra-orally by what?
Ans: pterygoid hamulus (palpation), coronoid notch (palpation), and
pterygomandibular raphe (visual)
the mandibular foramen lies approx. __________________________ of the
distance from the anterior border of the ramus to the posterior border
Ans: 1/2 to 2/3
Antero-posteriorly, the greater palatine foramen is located between the
___________________________. Ans: middle oft he maxillary second molar
and the middle of the third molar in about 80-90% of patients.
Assignment Expert
all arteries leading to the oral cavity receive blood from what? Ans:
external carotid (most are direct or indirect branches from the maxillary
Guru01 - Stuvia
artery with the exception of the lingula -- this is a direct branch from the
external carotid)
veins from the oral cavity will drain into what? Ans: internal jugular
2026
(both internal and external drain into the brachiocephalic veins which
drain to the superior vena cava
©
do myelinated or un-myelinated nerves create faster impulse? Ans:
myelinated (impulses jump from node to node -- node of ranvier)
what is saltatory conduction? Ans: the process of nerve impulses
jumping from nodes of ranvier along a myelinated nerve
what is the resting potential charges of a nerve? Ans: inside is negative
and outside is positive
what molecules are predominately outside/inside at resting potential?
Ans: Na+ outside and K+ inside
what is depolarization? Ans: Na+ channels open , Na+ flows in reversing
polarity; K+ flows out to restore neutrality; the Na+ and K+ pumps
restore polarity (resting potential)
CDCA local anesthesia exam review Questions and
Correct Answers | Latest Update
which has thicker cortical plate, maxillary or mandibular? Ans:
mandibular (this decreased the amount of the local anesthesia molecules
that can penetrate to nerves during infiltration injections)
due to the thickness of cortical bone, which is a good option for local
anesthetic in the mandibular arch during infiltrations? Ans: Articaine
(Septocaine) is sometimes effective for mand. infiltrations (4% vs. 2% for
lidocaine) due to the increased number of molecules
Assignment Expert
hematomas are most common with which type of injection, and why?
Ans: PSA due to nicking a vessel in the pterygoid plexus of veins
Guru01 - Stuvia
what is the TX for a hematoma? Ans: pressure, cold compresses on/off,
NSAIDS, and time.
2026
a positive aspiration when administering a PSA is due to what? Ans:
aspirating hemorrhage caused by injection
©
what are the three most common locations for hematomas to occur? Ans:
1. PSA
2. IA
3. mental
blanching of the tissue following/during an injection is caused by what?
Ans: vasospasm/vasoconstriction caused by epinephrine or brushing
against autonomic nerves stimulation vasospasm
the pterygomandibular space/triangle is bordered by what anatomical
structures? Ans: ramus, lateral pterygoid muscle, and medial pterygoid
muscle
, 2 for specific request mail
the pterygomandibular space/triangle is identified intra-orally by what?
Ans: pterygoid hamulus (palpation), coronoid notch (palpation), and
pterygomandibular raphe (visual)
the mandibular foramen lies approx. __________________________ of the
distance from the anterior border of the ramus to the posterior border
Ans: 1/2 to 2/3
Antero-posteriorly, the greater palatine foramen is located between the
___________________________. Ans: middle oft he maxillary second molar
and the middle of the third molar in about 80-90% of patients.
Assignment Expert
all arteries leading to the oral cavity receive blood from what? Ans:
external carotid (most are direct or indirect branches from the maxillary
Guru01 - Stuvia
artery with the exception of the lingula -- this is a direct branch from the
external carotid)
veins from the oral cavity will drain into what? Ans: internal jugular
2026
(both internal and external drain into the brachiocephalic veins which
drain to the superior vena cava
©
do myelinated or un-myelinated nerves create faster impulse? Ans:
myelinated (impulses jump from node to node -- node of ranvier)
what is saltatory conduction? Ans: the process of nerve impulses
jumping from nodes of ranvier along a myelinated nerve
what is the resting potential charges of a nerve? Ans: inside is negative
and outside is positive
what molecules are predominately outside/inside at resting potential?
Ans: Na+ outside and K+ inside
what is depolarization? Ans: Na+ channels open , Na+ flows in reversing
polarity; K+ flows out to restore neutrality; the Na+ and K+ pumps
restore polarity (resting potential)
