NBDHE Dental Hygienist Actual Test
Exam with 100% Correct Answers 2025
Hypersensitivityof a rootlessensas thetoothformswhich of thefollowing?
a. PeriodontalLigament
b. Pulp
c. Cellular cementum
d. Enamel - CorrectAnswer-c. Cellular cementum
What nervesuppliestheintrinsic musclesof thetongue?
a. Trochlear
b. Trigeminal
c. Glossopharyngeal
d. Hypoglossal
e. Accessory- CorrectAnswer-d. Hypoglossal
.Which of thefollowingis themostradioresistant?
a. Glands
b. Reproductiveorgans
c. Bone Marrow
d. Skin
e. Nerves- CorrectAnswer-e. Nerves
Fluorideis typicallyintroducedin all of thefollowingwaysexceptby ?
a. Drinking water
b. Vitamins
c. Injection
d. Toothpaste
e. Mouthwash- Correct Answer-c. Injection
Gingivitis is consideredcontrolledwhen
a. thegums reachthecrown.
b. no deeppocketsappearin thegums
c. thegums appearfirm
d. theplaquehas beenremoved
e. there'sno bleedingaroundthegums - Correct Answer-e. there'sno bleedingaroundthe gums
A flat stonemay be usedto sharpena curetteby hand.The faceof thecuretteshouldbe at what angle to
the stone?
a. 50-65 degrees
b. 75-85 degrees
,c. 90-100degrees
, d. 100-110degrees
e. 125-135degrees- Correct Answer-d. 100-110degrees
Radiographicintensifyingscreensareusedfor
a. magnification
b. sharpeningtheimage
c. reducingthepatientdose
d. reflectingharmfulrays
e. expeditingtheprocessingtime- CorrectAnswer-c. reducingthepatientdose
After an outbreakof herpeticgingivostomatitis,theherpessimplexvirus may remaindormant in which of
the following?
a. Sensoryganglion
b. SalivaryGlands
c. Blood
d. Ligaments
e. Lymph nodes- Correct Answer-a. Sensoryganglion
Which of thefollowingis a characteristicof an overdenture?
a. No naturalteethremain
b. Naturalteethremain
c. Used with an overbite
d. Used with an underbite
e. Covers thedenture- Correct Answer-b. Naturalteethremain
A dentalcarieis anothernamefor a .
a. Dentaliinstrument
b. The gum line
c. Cavity
d. Plaquebuild-up
e. Gingivitis - CorrectAnswer-c. Cavity
Which of thefollowingis oneof themain reasonsfor a root canal?
a. toothis cracked
b. The pulp can'tbe fixed
c. Gumsarebleeding
d. A cavity ispresent
e. Enamelis worn off - Correct Answer-b. . The pulp can'tbe fixed
Vital whiteningis performedon which of thefollowing?
a. Dentures
b. Tooth with no live nerve
c. Tooth with live nerve
Exam with 100% Correct Answers 2025
Hypersensitivityof a rootlessensas thetoothformswhich of thefollowing?
a. PeriodontalLigament
b. Pulp
c. Cellular cementum
d. Enamel - CorrectAnswer-c. Cellular cementum
What nervesuppliestheintrinsic musclesof thetongue?
a. Trochlear
b. Trigeminal
c. Glossopharyngeal
d. Hypoglossal
e. Accessory- CorrectAnswer-d. Hypoglossal
.Which of thefollowingis themostradioresistant?
a. Glands
b. Reproductiveorgans
c. Bone Marrow
d. Skin
e. Nerves- CorrectAnswer-e. Nerves
Fluorideis typicallyintroducedin all of thefollowingwaysexceptby ?
a. Drinking water
b. Vitamins
c. Injection
d. Toothpaste
e. Mouthwash- Correct Answer-c. Injection
Gingivitis is consideredcontrolledwhen
a. thegums reachthecrown.
b. no deeppocketsappearin thegums
c. thegums appearfirm
d. theplaquehas beenremoved
e. there'sno bleedingaroundthegums - Correct Answer-e. there'sno bleedingaroundthe gums
A flat stonemay be usedto sharpena curetteby hand.The faceof thecuretteshouldbe at what angle to
the stone?
a. 50-65 degrees
b. 75-85 degrees
,c. 90-100degrees
, d. 100-110degrees
e. 125-135degrees- Correct Answer-d. 100-110degrees
Radiographicintensifyingscreensareusedfor
a. magnification
b. sharpeningtheimage
c. reducingthepatientdose
d. reflectingharmfulrays
e. expeditingtheprocessingtime- CorrectAnswer-c. reducingthepatientdose
After an outbreakof herpeticgingivostomatitis,theherpessimplexvirus may remaindormant in which of
the following?
a. Sensoryganglion
b. SalivaryGlands
c. Blood
d. Ligaments
e. Lymph nodes- Correct Answer-a. Sensoryganglion
Which of thefollowingis a characteristicof an overdenture?
a. No naturalteethremain
b. Naturalteethremain
c. Used with an overbite
d. Used with an underbite
e. Covers thedenture- Correct Answer-b. Naturalteethremain
A dentalcarieis anothernamefor a .
a. Dentaliinstrument
b. The gum line
c. Cavity
d. Plaquebuild-up
e. Gingivitis - CorrectAnswer-c. Cavity
Which of thefollowingis oneof themain reasonsfor a root canal?
a. toothis cracked
b. The pulp can'tbe fixed
c. Gumsarebleeding
d. A cavity ispresent
e. Enamelis worn off - Correct Answer-b. . The pulp can'tbe fixed
Vital whiteningis performedon which of thefollowing?
a. Dentures
b. Tooth with no live nerve
c. Tooth with live nerve
