MEDSTUDY.COM
National Dental Hygiene Board Review Questions And
Answers (A+) 100% Correct
What is a disadvantage to a mental nerve block? - ANSWER similar to a PSA injection,
can cause hematoma
why should patients taking steroids avoid LA with vaso.? - ANSWER prone to sulfite
allergies
M
ED
why should you take precaution when giving a asthmatic patient prilocaine? - ANSWER
it it metabolized in the lungs and liver
limit dose
ST
what are some sign and symptoms of methmoglobinemia that appear 3-4 hours after
injection? (4) - ANSWER 1. cyanotic nail beds, and mucous membrane, skin is grayish
blue
2. respiratory disease
U
3. lethargy
D
4. venous blood is chocolate brown
Y
why should people that have liver disease such as acute hepatitis avoid injections that
have a greater risk of positive aspiration? - ANSWER may have increased bleeding time
Why should L, specifically prilocaine avoid individuals with renal failure or dysfunction? -
ANSWER because prilocaine is metabolized in the kidneys
When should LA avoid individuals who have sickle cell anemia? - ANSWER when the
person is in crisis
,MEDSTUDY.COM
What dose should one use for patients on seratonin and norepinephrine reuptake
inhibitors like cymbalta? - ANSWER cardiac dose
What is the drug interaction between levonordefrin and tricyclic
antidepressants-amitriptyline /elavil? - ANSWER increase of blood pressure
what is the concern with phenothiazides (haldol, thorazine) and vasoconstrictors? -
ANSWER pheno. is a alpha blocker that antagonizes the beta blockers of epi. they
reverse the effects of vasoconstrictors thus increasing risk of hypotension
M
why should patients on antihistamines such as cimetidine/tagamet avoid LA like
lidocaine? - ANSWER antihistamines competes with lidocaine for liver enzyme, therefore
ED
slowing down the metabolism of lidocaine causing risk of overdose
what is the cause of a hematoma upon injection? -ANSWER nicking or puncturing a
blood vessel causing hemorrhaging into surrounding tissue
ST
what nerve is affected in facial paralysis? what mistake usually causes this? how long
does it last? -ANSWER facial nerve that is in the parotid gland
U
overinsertion during IANB that penetrates the parotid gland
few hours
D
what is paresthesia? what nerve is most frequently involved? -ANSWER persistent
Y
anesthesia beyond expected duration
involves usually the lingual nerve
what is the maximum permissible dose of radiation that a occupational person can
receive? - ANS 5.0 rem/year
what is the maximum permissible dose of radiation that a non-occupational person can
receive? - ANS 0.1 rem/year
,MEDSTUDY.COM
what is trismus? - ANS spasm of the muscles of mastication
what are the 4 components of a radiographic film - ANS 1. acetate base
2. adhesive layer
3. Emulsion layer(single or double) - gelatin of silver halide crystals to absorb and store
xray
4. Protective layer
M
What is a latent image? - ANSWER Invisible image that is produced when the film is
exposed to a xray and invisible until it is processed.
ED
What is the purpose of the lead backing in a film? - ANSWER To prevent scatter of xray
ST
Low KVP =? - ANSWER High contrast(short scale)
what size film for adults and children do you need to take an oclussal xray? - ANSWER
U
adult- size 4
pedo- size 2
D
what is the max angulation for a occlusal xray image on the maxilla? how about the
Y
mandible? - ANSWER 65-75 degrees maxilla
-55 for the mandible
what is a occlusal image used for? and what is it NOT used for? - ANSWER -fractures
-cyst
-supernumerary teeth
-pathology at the apices of incisors
, MEDSTUDY.COM
it is *not* used for periodontal conditions
why do we take PANS? - ANSWER -supernumerary teeth
-primary dentition
- foreign objects
-developmental abnormalities
what is a ghost image on a panoramic? - ANSWER it is a opaque shadow of a object
M
located on the *opposite* side of the patient
ED
if the patients head is tilted too high up during a PAN, what will occur the image look
like? - ANSWER like a frown
what type of image is best to classify periodontal condition? - ANS bitewings
ST
what are the two types of luxations? - ANS 1. intrusion- pushed in
2. extrusion- pushed out
U
D
apex of a tooth is non-vital due to low grade fever, not attached to root, usually in
mandibular first molars - ANS condensing osteitis
Y
what is specificity? - ANSWER the % of persons without disease who test negative
what is sensitivity? - ANSWER total number of true positives /total number of positive
findings possible(true positives + false negatives are equal)
sensitivity= TP/TP+FN
What term is used to describe the proportion of diseased persons to well persons in the
community? - ANSWER morbidity
National Dental Hygiene Board Review Questions And
Answers (A+) 100% Correct
What is a disadvantage to a mental nerve block? - ANSWER similar to a PSA injection,
can cause hematoma
why should patients taking steroids avoid LA with vaso.? - ANSWER prone to sulfite
allergies
M
ED
why should you take precaution when giving a asthmatic patient prilocaine? - ANSWER
it it metabolized in the lungs and liver
limit dose
ST
what are some sign and symptoms of methmoglobinemia that appear 3-4 hours after
injection? (4) - ANSWER 1. cyanotic nail beds, and mucous membrane, skin is grayish
blue
2. respiratory disease
U
3. lethargy
D
4. venous blood is chocolate brown
Y
why should people that have liver disease such as acute hepatitis avoid injections that
have a greater risk of positive aspiration? - ANSWER may have increased bleeding time
Why should L, specifically prilocaine avoid individuals with renal failure or dysfunction? -
ANSWER because prilocaine is metabolized in the kidneys
When should LA avoid individuals who have sickle cell anemia? - ANSWER when the
person is in crisis
,MEDSTUDY.COM
What dose should one use for patients on seratonin and norepinephrine reuptake
inhibitors like cymbalta? - ANSWER cardiac dose
What is the drug interaction between levonordefrin and tricyclic
antidepressants-amitriptyline /elavil? - ANSWER increase of blood pressure
what is the concern with phenothiazides (haldol, thorazine) and vasoconstrictors? -
ANSWER pheno. is a alpha blocker that antagonizes the beta blockers of epi. they
reverse the effects of vasoconstrictors thus increasing risk of hypotension
M
why should patients on antihistamines such as cimetidine/tagamet avoid LA like
lidocaine? - ANSWER antihistamines competes with lidocaine for liver enzyme, therefore
ED
slowing down the metabolism of lidocaine causing risk of overdose
what is the cause of a hematoma upon injection? -ANSWER nicking or puncturing a
blood vessel causing hemorrhaging into surrounding tissue
ST
what nerve is affected in facial paralysis? what mistake usually causes this? how long
does it last? -ANSWER facial nerve that is in the parotid gland
U
overinsertion during IANB that penetrates the parotid gland
few hours
D
what is paresthesia? what nerve is most frequently involved? -ANSWER persistent
Y
anesthesia beyond expected duration
involves usually the lingual nerve
what is the maximum permissible dose of radiation that a occupational person can
receive? - ANS 5.0 rem/year
what is the maximum permissible dose of radiation that a non-occupational person can
receive? - ANS 0.1 rem/year
,MEDSTUDY.COM
what is trismus? - ANS spasm of the muscles of mastication
what are the 4 components of a radiographic film - ANS 1. acetate base
2. adhesive layer
3. Emulsion layer(single or double) - gelatin of silver halide crystals to absorb and store
xray
4. Protective layer
M
What is a latent image? - ANSWER Invisible image that is produced when the film is
exposed to a xray and invisible until it is processed.
ED
What is the purpose of the lead backing in a film? - ANSWER To prevent scatter of xray
ST
Low KVP =? - ANSWER High contrast(short scale)
what size film for adults and children do you need to take an oclussal xray? - ANSWER
U
adult- size 4
pedo- size 2
D
what is the max angulation for a occlusal xray image on the maxilla? how about the
Y
mandible? - ANSWER 65-75 degrees maxilla
-55 for the mandible
what is a occlusal image used for? and what is it NOT used for? - ANSWER -fractures
-cyst
-supernumerary teeth
-pathology at the apices of incisors
, MEDSTUDY.COM
it is *not* used for periodontal conditions
why do we take PANS? - ANSWER -supernumerary teeth
-primary dentition
- foreign objects
-developmental abnormalities
what is a ghost image on a panoramic? - ANSWER it is a opaque shadow of a object
M
located on the *opposite* side of the patient
ED
if the patients head is tilted too high up during a PAN, what will occur the image look
like? - ANSWER like a frown
what type of image is best to classify periodontal condition? - ANS bitewings
ST
what are the two types of luxations? - ANS 1. intrusion- pushed in
2. extrusion- pushed out
U
D
apex of a tooth is non-vital due to low grade fever, not attached to root, usually in
mandibular first molars - ANS condensing osteitis
Y
what is specificity? - ANSWER the % of persons without disease who test negative
what is sensitivity? - ANSWER total number of true positives /total number of positive
findings possible(true positives + false negatives are equal)
sensitivity= TP/TP+FN
What term is used to describe the proportion of diseased persons to well persons in the
community? - ANSWER morbidity
