CDCA Local Anesthesia Review Study
Guide Q&A rated A 2026
✅
where does the mandibular nerve pass through the skull - correct answer
foramen ovale
where does the NP nerve pass through the skull - correct answer
foramen
✅ incisive
✅
maxillary division of trigeminal nerve is (sensory, motor, or both) - correct answer
sensory
✅
nerves associated with maxillary nerve branch V2 - correct answer
pterygopalatine nerves: GP and lesser palatine, NP, zygomatic nerve, PSA ,
infraobrital nerve MSA and ASA
nerves associated with mandibular nerve branch V3 - correct answer ✅ long
buccal, auriculotemporal, lingual, inferior alveolar, mental, incisive, mylohyoid.
PSA inervates - correct answer ✅
pulps, PDLs, surrouding alveolar bone, buccal
gingiva and mucosa of max molars except Mesio buccal root of 1st molar,
✅
what injection needed to anesthetize lingual of max anteriors - correct answer
nasopalatine (less than 1/4 cart)
✅
what injections needed to anesthetize entire palate on one side - correct answer
GP and NP (less than 1/2 cart for both)
,CDCA Local Anesthesia Review Study
Guide Q&A rated A 2026
how far do you insert the needle on an IANB - correct answer
2/4th-3/4th a needle (dose: 3/4cart 1.5ml)
✅ 20-25mm about
what happens during depolarization - correct answer ✅ sodium in potassium out,
rapid influx of sodium ions causes depolarization of nerve membrane from resting
level to its firing threshold
when do you aspirate? - correct answer ✅ right before anesthetic is deposited
which LA is metabolized by pseudocholinesterase - correct answer
procaine (novacain), benzocaine
✅ esters:
topical anesthetics are least effective on? - correct answer ✅ keratinized tissues
which is true of topical anesthetics - correct answer ✅ no systemic problems
highest occurance of allergic reactions - correct answer
ester option
✅ benzocaine topical, the
correct answer ✅
what is the significance of giving an amide anesthetic to a patient with cirohsis -
amides are metabolized by the liver
landmark for IANB injection - correct answer ✅
coronoid notch,
pterygomandibular raphe, lingual is 1cm above occlusal plane and 1-1.25cm back
from anterior border of ramus
,CDCA Local Anesthesia Review Study
Guide Q&A rated A 2026
psychogenic pain question - correct answer ✅ no organic base for pain
max epi dose for healthy patient - correct answer ✅ 0.2mg an appointment
5.5 cart of 1:50,000
11 cart of 1:100,000
22 cart of 1:200,000
max epi does dose for cardiac pt. ASA 3 or 4 - correct answer
appointment
✅0.04 mg an
1 cart of 1:50,000
2 cart of 1:100,000
4 cart of 1:200,000
what is trismus - correct answer
limited opening of the mouth
✅prolonged, tetantic spasm of jaw muscles,
management of hematoma - correct answer
cold compression
✅ pressure at site of bleeding and
management of trismus - correct answer ✅ heat therapy, warm saline rinses,
analgesics, muscle relaxtants, physiotherapy (jaw exercises)
during which injection - correct answer✅
hematoma can occur if needle penetrates into the pterygoid plexus of veins
PSA
, CDCA Local Anesthesia Review Study
Guide Q&A rated A 2026
✅
what needle should be used for infiltration/superperiosteal - correct answer
27g short
antioxidant - correct answer ✅sodium bisulfite
actions of vasopressor (vasoconstrictors) - correct answer ✅ -increase duraition
of LA, hemostiasis, reduce chance of toxicity, decrease blood flow to site of
administration, slowed absorption resulting in lower blood levels
what would cause a dry cornea - correct answer ✅anesthetizing the facial nerve
by not contacting bone during the IANB and anesthetic solution is deposited in
parotid gland, temporary bell's palsy would not allow the patients eyelid to blink
or close, which would cause dry eye.
amount of epi in a solution - correct answer
mg (17mg)
✅1% solution = 10 X 1.8 (1.7) =18
2% solution = 20 X 1.8 (1.7)= 36mg (34mg)
3% solution= 30 X 1.8 (1.7)= 54mg (51mg)
burning upon injection due to.... - correct answer
fast, contaminated cartridges
✅ ph of solution, injection to
needle breakage cause - correct answer ✅ #1 cause: needle fracture occuring at
the hub but others include, intentional bending before injection, sudden
unexpected movement by pt and forceful contact with bone
Guide Q&A rated A 2026
✅
where does the mandibular nerve pass through the skull - correct answer
foramen ovale
where does the NP nerve pass through the skull - correct answer
foramen
✅ incisive
✅
maxillary division of trigeminal nerve is (sensory, motor, or both) - correct answer
sensory
✅
nerves associated with maxillary nerve branch V2 - correct answer
pterygopalatine nerves: GP and lesser palatine, NP, zygomatic nerve, PSA ,
infraobrital nerve MSA and ASA
nerves associated with mandibular nerve branch V3 - correct answer ✅ long
buccal, auriculotemporal, lingual, inferior alveolar, mental, incisive, mylohyoid.
PSA inervates - correct answer ✅
pulps, PDLs, surrouding alveolar bone, buccal
gingiva and mucosa of max molars except Mesio buccal root of 1st molar,
✅
what injection needed to anesthetize lingual of max anteriors - correct answer
nasopalatine (less than 1/4 cart)
✅
what injections needed to anesthetize entire palate on one side - correct answer
GP and NP (less than 1/2 cart for both)
,CDCA Local Anesthesia Review Study
Guide Q&A rated A 2026
how far do you insert the needle on an IANB - correct answer
2/4th-3/4th a needle (dose: 3/4cart 1.5ml)
✅ 20-25mm about
what happens during depolarization - correct answer ✅ sodium in potassium out,
rapid influx of sodium ions causes depolarization of nerve membrane from resting
level to its firing threshold
when do you aspirate? - correct answer ✅ right before anesthetic is deposited
which LA is metabolized by pseudocholinesterase - correct answer
procaine (novacain), benzocaine
✅ esters:
topical anesthetics are least effective on? - correct answer ✅ keratinized tissues
which is true of topical anesthetics - correct answer ✅ no systemic problems
highest occurance of allergic reactions - correct answer
ester option
✅ benzocaine topical, the
correct answer ✅
what is the significance of giving an amide anesthetic to a patient with cirohsis -
amides are metabolized by the liver
landmark for IANB injection - correct answer ✅
coronoid notch,
pterygomandibular raphe, lingual is 1cm above occlusal plane and 1-1.25cm back
from anterior border of ramus
,CDCA Local Anesthesia Review Study
Guide Q&A rated A 2026
psychogenic pain question - correct answer ✅ no organic base for pain
max epi dose for healthy patient - correct answer ✅ 0.2mg an appointment
5.5 cart of 1:50,000
11 cart of 1:100,000
22 cart of 1:200,000
max epi does dose for cardiac pt. ASA 3 or 4 - correct answer
appointment
✅0.04 mg an
1 cart of 1:50,000
2 cart of 1:100,000
4 cart of 1:200,000
what is trismus - correct answer
limited opening of the mouth
✅prolonged, tetantic spasm of jaw muscles,
management of hematoma - correct answer
cold compression
✅ pressure at site of bleeding and
management of trismus - correct answer ✅ heat therapy, warm saline rinses,
analgesics, muscle relaxtants, physiotherapy (jaw exercises)
during which injection - correct answer✅
hematoma can occur if needle penetrates into the pterygoid plexus of veins
PSA
, CDCA Local Anesthesia Review Study
Guide Q&A rated A 2026
✅
what needle should be used for infiltration/superperiosteal - correct answer
27g short
antioxidant - correct answer ✅sodium bisulfite
actions of vasopressor (vasoconstrictors) - correct answer ✅ -increase duraition
of LA, hemostiasis, reduce chance of toxicity, decrease blood flow to site of
administration, slowed absorption resulting in lower blood levels
what would cause a dry cornea - correct answer ✅anesthetizing the facial nerve
by not contacting bone during the IANB and anesthetic solution is deposited in
parotid gland, temporary bell's palsy would not allow the patients eyelid to blink
or close, which would cause dry eye.
amount of epi in a solution - correct answer
mg (17mg)
✅1% solution = 10 X 1.8 (1.7) =18
2% solution = 20 X 1.8 (1.7)= 36mg (34mg)
3% solution= 30 X 1.8 (1.7)= 54mg (51mg)
burning upon injection due to.... - correct answer
fast, contaminated cartridges
✅ ph of solution, injection to
needle breakage cause - correct answer ✅ #1 cause: needle fracture occuring at
the hub but others include, intentional bending before injection, sudden
unexpected movement by pt and forceful contact with bone
