Mosby's Review for NBDHE (2025)
Actual Exam Questions and Answers A+
Graded
.
1. .A .program .for .tobacco .use .cessation .is .an .essential .component .of
the .dental .hygiene .care .plan .for .appropriate .patients. .The .first .step
for .tobacco .dependence .intervention .is .to:
A .advise .users .about .using .tobacco .products.
B .ask .patients .about .their .current .tobacco .use .habits.
C .suggest .the .use .of .a .nicotine .replacement .gum .or .lozenges.
D .educate .patients .about .the .risks .of .tobacco .use .to .themselves
and .others. .- .CORRECT .ANSWER .-B .ask .patients .about .their .current .tobacco
.use .habits.
B>A>C>D
2. .The .normal .respiration .rate .range, .in .breaths .per .minute, .for .an
adult .is
A .8-10.
B .12-20.
C .22-27.
D .28-32. .- .CORRECT .ANSWER .-B .12-20.
A .blood .pressure .reading .of .146/90 .mm .Hg .would .be .classified .as
A .normal.
308
B .prehypertension.
C .hypertension, .stage .1.
D .hypertension, .stage .2. .- .CORRECT .ANSWER .-C .hypertension, .stage .1.
4. .The .first .course .of .action .in .the .dental .hygiene .process .of .care .is
to
A .recognize .any .deviations .or .abnormalities.
B .identify .the .presence .of .plaque .deposits.
C .obtain .medical .and .dental .histories.
D .classify .the .extent .of .periodontal .disease. .- .CORRECT .ANSWER .-C .obtain
.medical .and .dental .histories.
Which .of .the .following .is .another .name .for .hypoglycemia?
A .Low .blood .sugar
B .High .blood .sugar
C .High .cholesterol
,D .Low .blood .pressure
E .Underactive .thyroid .- .CORRECT .ANSWER .-A .Low .blood .sugar
6. .During .an .epileptic .seizure, .the .patient .should .be .placed .in
which .position .in .the .dental .chair?
A .Upright
B .Supine
C .Trendelenburg
D .Semi-upright .- .CORRECT .ANSWER .-B .Supine
7. .Body .core .temperature .exceeding .37.5 .°C .(99.1 .°F) .but .less .than .41.0 .°C
.(105.8 .°F) .is .termed
A .pyrexia.
B .anorexia.
C .hypothermia.
D .hyperthermia. .- .CORRECT .ANSWER .-A .pyrexia.
8. .All .of .these .factors .are .associated .with .increased .respiration,
pulse, .and .blood .pressure .EXCEPT .one. .Which .one .is .the
EXCEPTION?
A .Strong .emotions
B .Physical .exertion
C .Nitrous .oxide .inhalation
D .Consumption .of .caffeine
E .Decongestant .medications .- .CORRECT .ANSWER .-C .Nitrous .oxide .inhalation
9. .Caries .management .by .risk .assessment .(CAMBRA) .is .an
evidence-based .approach .to .the .prevention .and .management .of .caries, .which
.assesses .levels .of .risk .and .serves .as .a .guideline .for .interventions. .Current
.research .indicates .that .the .most .important .factor .in .dental .caries .prevention
.and .treatment .is .to .modify .and .correct .the .dental .biofilm .and .transform .oral
.factors .to .favor .dental .health.
A .Both .statements .are .true.
B .Both .statements .are .false.
C .The .first .statement .is .true, .and .the .second .statement .is .false.
D .The .first .statement .is .false, .and .the .second .statement .is .true. .- .CORRECT
.ANSWER .-A .Both .statements .are .true.
10. .The .highest .pH .level .at .which .demineralization .occurs .in
enamel .is .between
A .2.5 .and .3.5.
B .3.5 .and .4.5.
C .4.5 .and .5.5.
D .6.0 .and .6.7.
E .7.0 .and .7.2. .- .CORRECT .ANSWER .-C .4.5 .and .5.5.
11. .A .caries .management .by .risk .assessment .(CAMBRA) .protocol
for .enamel .remineralization .involves .chewing .of .xylitol .gum .or
,mints .because .xylitol .reduces .the .levels .of .Streptococcus .mutans .and
.promotes .remineralization.
A .Both .the .statement .and .reason .are .correct .and .related.
B .Both .the .statement .and .reason .are .correct .and .NOT .related.
C .The .statement .is .correct, .but .the .reason .is .NOT.
D .The .statement .is .NOT .correct, .but .the .reason .is .correct.
E .NEITHER .the .statement .NOR .the .reason .is .correct. .- .CORRECT .ANSWER .-A
.Both .the .statement .and .reason .are .correct .and .related.
12. .Dental .caries .is .a(n)
A .hereditary .disease.
B .autoimmune .disease.
C .communicable .disease.
D .nontransmissible .disease. .- .CORRECT .ANSWER .-C .communicable .disease.
13. .If .a .patient .is .taking .phenytoin .(Dilantin), .it .is .usually .an
indication .that .he .or .she .is .being .treated .for
A .diabetes.
B .epilepsy.
C .tuberculosis.
D .hypertension. .- .CORRECT .ANSWER .-B .epilepsy.
14. .For .a .patient .who .is .classified .as .being .at .moderate .to .extreme .risk .for
.caries, .all .of .the .following .are .recommended .risk-reduction .and .treatment
.strategies .EXCEPT .one. .Which .one .is .the .EXCEPTION?
A .Topical .and .systemic .fluoride .use
B .Chewing .an .antacid .before .bedtime
C .Using .a .0.12% .chlorhexidine .gluconate .rinse
D .Substituting .xylitol .mints .for .sugared .mints
E .Brushing .with .a .calcium .phosphate .paste .daily .- .CORRECT .ANSWER .-B
.Chewing .an .antacid .before .bedtime
15. .Hyposalivation .may .develop .into .all .of .these .oral .conditions
EXCEPT .one. .Which .one .is .the .EXCEPTION?
A .Dysgeusia
B .Dysphagia
C .Xerostomia
D .Rampant .caries
E .Periodontal .disease .- .CORRECT .ANSWER .-E .Periodontal .disease
16. .Hand .washing .is .recommended .after .removal .of .gloves .because
A .regloving .is .easier .with .damp .hands.
B .hand .washing .prevents .allergic .reactions .with .gloves.
C .microorganisms .can .penetrate .the .glove .after .a .certain .amount .of .time.
D .organisms .on .the .hand .multiply .rapidly .inside .the .warm,
moist .environment .of .the .glove. .- .CORRECT .ANSWER .-D .organisms .on .the
.hand .multiply .rapidly .inside .the .warm, .moist .environment .of .the .glove.
, 17. .Which .percentage .of .ethanol .or .isopropanol .should .an .alcohol-based .hand
.rub .contain .to .be .effective .in .removing .transient .microorganisms .and .reducing
.resident .flora?
A .10%-20%
B .20%-30%
C .40%-50%
D .50%-60%
E .60%-70% .- .CORRECT .ANSWER .-E .60%-70%
18. .Which .type .of .modifications .should .be .made .when .scheduling .dental
.appointments .for .a .patient .with .significant .manifestation .of .autism .spectrum
.disorder?
A .Longer .appointments .in .the .morning
B .Every .2 .weeks .until .the .patient .is .familiar .with .the .staff
C .Several .short, .frequent .appointments .with .the .same .staff
members
D .Frequent .appointments .with .different .members .of .the .dental
team .- .CORRECT .ANSWER .-C .Several .short, .frequent .appointments .with .the
.same .staff
members
19. .Biologic .monitoring .tests .evaluate .the .effectiveness .of .the
sterilization .cycle. .These .monitoring .tests .should .be .performed
monthly .to .verify .effective .functioning .of .the .sterilization
equipment.
A .Both .statements .are .true.
B .Both .statements .are .false.
C .The .first .statement .is .true, .and .the .second .statement .is .false.
D .The .first .statement .is .false, .and .the .second .statement .is .true. .- .CORRECT
.ANSWER .-C .The .first .statement .is .true, .and .the .second .statement .is .false.
20. .Which .is .the .MOST .effective .test .for .a .steam .under .pressure
sterilization .unit?
A .Biologic .monitor
B .External .heat .indicator
C .External .chemical .indicator
D .Internal .chemical .indicator .- .CORRECT .ANSWER .-A .Biologic .monitor
21. .A .patient .who .indicates .a .food .allergy .to .avocados, .chestnuts,
and .papayas .may .be .at .risk .for .which .type .of .sensitivity?
A .Latex
B .Aspirin
C .Penicillin
D .Epinephrine .- .CORRECT .ANSWER .-A .Latex
22. .Which .is .the .MOST .commonly .administered .agent .for .a .patient
in .a .hypoglycemia .emergency?
A .Sugar
B .Aspirin
Actual Exam Questions and Answers A+
Graded
.
1. .A .program .for .tobacco .use .cessation .is .an .essential .component .of
the .dental .hygiene .care .plan .for .appropriate .patients. .The .first .step
for .tobacco .dependence .intervention .is .to:
A .advise .users .about .using .tobacco .products.
B .ask .patients .about .their .current .tobacco .use .habits.
C .suggest .the .use .of .a .nicotine .replacement .gum .or .lozenges.
D .educate .patients .about .the .risks .of .tobacco .use .to .themselves
and .others. .- .CORRECT .ANSWER .-B .ask .patients .about .their .current .tobacco
.use .habits.
B>A>C>D
2. .The .normal .respiration .rate .range, .in .breaths .per .minute, .for .an
adult .is
A .8-10.
B .12-20.
C .22-27.
D .28-32. .- .CORRECT .ANSWER .-B .12-20.
A .blood .pressure .reading .of .146/90 .mm .Hg .would .be .classified .as
A .normal.
308
B .prehypertension.
C .hypertension, .stage .1.
D .hypertension, .stage .2. .- .CORRECT .ANSWER .-C .hypertension, .stage .1.
4. .The .first .course .of .action .in .the .dental .hygiene .process .of .care .is
to
A .recognize .any .deviations .or .abnormalities.
B .identify .the .presence .of .plaque .deposits.
C .obtain .medical .and .dental .histories.
D .classify .the .extent .of .periodontal .disease. .- .CORRECT .ANSWER .-C .obtain
.medical .and .dental .histories.
Which .of .the .following .is .another .name .for .hypoglycemia?
A .Low .blood .sugar
B .High .blood .sugar
C .High .cholesterol
,D .Low .blood .pressure
E .Underactive .thyroid .- .CORRECT .ANSWER .-A .Low .blood .sugar
6. .During .an .epileptic .seizure, .the .patient .should .be .placed .in
which .position .in .the .dental .chair?
A .Upright
B .Supine
C .Trendelenburg
D .Semi-upright .- .CORRECT .ANSWER .-B .Supine
7. .Body .core .temperature .exceeding .37.5 .°C .(99.1 .°F) .but .less .than .41.0 .°C
.(105.8 .°F) .is .termed
A .pyrexia.
B .anorexia.
C .hypothermia.
D .hyperthermia. .- .CORRECT .ANSWER .-A .pyrexia.
8. .All .of .these .factors .are .associated .with .increased .respiration,
pulse, .and .blood .pressure .EXCEPT .one. .Which .one .is .the
EXCEPTION?
A .Strong .emotions
B .Physical .exertion
C .Nitrous .oxide .inhalation
D .Consumption .of .caffeine
E .Decongestant .medications .- .CORRECT .ANSWER .-C .Nitrous .oxide .inhalation
9. .Caries .management .by .risk .assessment .(CAMBRA) .is .an
evidence-based .approach .to .the .prevention .and .management .of .caries, .which
.assesses .levels .of .risk .and .serves .as .a .guideline .for .interventions. .Current
.research .indicates .that .the .most .important .factor .in .dental .caries .prevention
.and .treatment .is .to .modify .and .correct .the .dental .biofilm .and .transform .oral
.factors .to .favor .dental .health.
A .Both .statements .are .true.
B .Both .statements .are .false.
C .The .first .statement .is .true, .and .the .second .statement .is .false.
D .The .first .statement .is .false, .and .the .second .statement .is .true. .- .CORRECT
.ANSWER .-A .Both .statements .are .true.
10. .The .highest .pH .level .at .which .demineralization .occurs .in
enamel .is .between
A .2.5 .and .3.5.
B .3.5 .and .4.5.
C .4.5 .and .5.5.
D .6.0 .and .6.7.
E .7.0 .and .7.2. .- .CORRECT .ANSWER .-C .4.5 .and .5.5.
11. .A .caries .management .by .risk .assessment .(CAMBRA) .protocol
for .enamel .remineralization .involves .chewing .of .xylitol .gum .or
,mints .because .xylitol .reduces .the .levels .of .Streptococcus .mutans .and
.promotes .remineralization.
A .Both .the .statement .and .reason .are .correct .and .related.
B .Both .the .statement .and .reason .are .correct .and .NOT .related.
C .The .statement .is .correct, .but .the .reason .is .NOT.
D .The .statement .is .NOT .correct, .but .the .reason .is .correct.
E .NEITHER .the .statement .NOR .the .reason .is .correct. .- .CORRECT .ANSWER .-A
.Both .the .statement .and .reason .are .correct .and .related.
12. .Dental .caries .is .a(n)
A .hereditary .disease.
B .autoimmune .disease.
C .communicable .disease.
D .nontransmissible .disease. .- .CORRECT .ANSWER .-C .communicable .disease.
13. .If .a .patient .is .taking .phenytoin .(Dilantin), .it .is .usually .an
indication .that .he .or .she .is .being .treated .for
A .diabetes.
B .epilepsy.
C .tuberculosis.
D .hypertension. .- .CORRECT .ANSWER .-B .epilepsy.
14. .For .a .patient .who .is .classified .as .being .at .moderate .to .extreme .risk .for
.caries, .all .of .the .following .are .recommended .risk-reduction .and .treatment
.strategies .EXCEPT .one. .Which .one .is .the .EXCEPTION?
A .Topical .and .systemic .fluoride .use
B .Chewing .an .antacid .before .bedtime
C .Using .a .0.12% .chlorhexidine .gluconate .rinse
D .Substituting .xylitol .mints .for .sugared .mints
E .Brushing .with .a .calcium .phosphate .paste .daily .- .CORRECT .ANSWER .-B
.Chewing .an .antacid .before .bedtime
15. .Hyposalivation .may .develop .into .all .of .these .oral .conditions
EXCEPT .one. .Which .one .is .the .EXCEPTION?
A .Dysgeusia
B .Dysphagia
C .Xerostomia
D .Rampant .caries
E .Periodontal .disease .- .CORRECT .ANSWER .-E .Periodontal .disease
16. .Hand .washing .is .recommended .after .removal .of .gloves .because
A .regloving .is .easier .with .damp .hands.
B .hand .washing .prevents .allergic .reactions .with .gloves.
C .microorganisms .can .penetrate .the .glove .after .a .certain .amount .of .time.
D .organisms .on .the .hand .multiply .rapidly .inside .the .warm,
moist .environment .of .the .glove. .- .CORRECT .ANSWER .-D .organisms .on .the
.hand .multiply .rapidly .inside .the .warm, .moist .environment .of .the .glove.
, 17. .Which .percentage .of .ethanol .or .isopropanol .should .an .alcohol-based .hand
.rub .contain .to .be .effective .in .removing .transient .microorganisms .and .reducing
.resident .flora?
A .10%-20%
B .20%-30%
C .40%-50%
D .50%-60%
E .60%-70% .- .CORRECT .ANSWER .-E .60%-70%
18. .Which .type .of .modifications .should .be .made .when .scheduling .dental
.appointments .for .a .patient .with .significant .manifestation .of .autism .spectrum
.disorder?
A .Longer .appointments .in .the .morning
B .Every .2 .weeks .until .the .patient .is .familiar .with .the .staff
C .Several .short, .frequent .appointments .with .the .same .staff
members
D .Frequent .appointments .with .different .members .of .the .dental
team .- .CORRECT .ANSWER .-C .Several .short, .frequent .appointments .with .the
.same .staff
members
19. .Biologic .monitoring .tests .evaluate .the .effectiveness .of .the
sterilization .cycle. .These .monitoring .tests .should .be .performed
monthly .to .verify .effective .functioning .of .the .sterilization
equipment.
A .Both .statements .are .true.
B .Both .statements .are .false.
C .The .first .statement .is .true, .and .the .second .statement .is .false.
D .The .first .statement .is .false, .and .the .second .statement .is .true. .- .CORRECT
.ANSWER .-C .The .first .statement .is .true, .and .the .second .statement .is .false.
20. .Which .is .the .MOST .effective .test .for .a .steam .under .pressure
sterilization .unit?
A .Biologic .monitor
B .External .heat .indicator
C .External .chemical .indicator
D .Internal .chemical .indicator .- .CORRECT .ANSWER .-A .Biologic .monitor
21. .A .patient .who .indicates .a .food .allergy .to .avocados, .chestnuts,
and .papayas .may .be .at .risk .for .which .type .of .sensitivity?
A .Latex
B .Aspirin
C .Penicillin
D .Epinephrine .- .CORRECT .ANSWER .-A .Latex
22. .Which .is .the .MOST .commonly .administered .agent .for .a .patient
in .a .hypoglycemia .emergency?
A .Sugar
B .Aspirin
