NBDHE Practice Test

Take this free NBDHE practice test to see how prepared you are for a dental hygienist certification exam. The NBDHE sample questions below are not meant to be a complete test preparation for the actual exam which has 350 questions and covers these main exam sections: Scientific Basis for Dental Hygiene Practice; Provision of Clinical Dental Hygiene Services and Principles of Community Health and Research.

1.	Hypersensitivity of a root lessens as the tooth forms which of the following?
	Periodontal Ligament
	Pulp
	Cellular cementum
	Enamel

2.	What nerve supplies the intrinsic muscles of the tongue?
	Trochlear
	Trigeminal
	Glossopharyngeal
	Hypoglossal
	Accessory

3.	Which of the following is the most radioresistant?
	Glands
	Reproductive organs
	Bone Marrow
	Skin
	Nerves

4.	Which of the following is the primary node for drainage of the superficial lymphatic vessels of the breast?
	Axillary
	Mesenteric
	Substernal
	Mediastinal
	Cervical

5.	Fluoride is typically introduced in all of the following ways except by ____________?
	Drinking water
	Vitamins
	Injection
	Toothpaste
	Mouthwash

6.	Gingivitas is considered controlled when
	the gums reach the crown.
	no deep pockets appear in the gums
	the gums appear firm
	the plaque has been removed
	there�s no bleeding around the gums

7.	A flat stone may be used to sharpen a curette by hand. The face of the curette should be at what angle to the stone?
	50-65 degrees
	75-85 degrees
	90-100 degrees
	100-110 degrees
	125-135 degrees

8.	Radiographic intensifying screens are used for
	magnification
	sharpening the image
	reducing the patient dose
	reflecting harmful rays
	expediting the processing time

9.	After an outbreak of herpetic gingivostomatitis, the herpes simplex virus may remain dormant in which of the following?
	Sensory ganglion
	Salivary Glands
	Blood
	Ligaments
	Lymph nodes

10.	Which of the following is a characteristic of an overdenture?
	No natural teeth remain
	Natural teeth remain
	Used with an overbite
	Used with an underbite
	Covers the denture

11.	A dental carie is another name for a _____________.
	Dental iinstrument
	The gum line
	Cavity
	Plaque build-up
	Gingivitis

12.	Which of the following is one of the main reasons for a root canal?
	tooth is cracked
	. The pulp can�t be fixed
	Gums are bleeding
	A cavity is present
	Enamel is worn off

13.	Vital whitening is performed on which of the following?
	Dentures
	Tooth with no live nerve
	Tooth with live nerve
	Cavities
	Tooth roots

14.	A vasoconductor does which of the following when used in conjunction with Lidocaine?
	Helps the drug get into the blood stream
	Helps the numbing drug work
	Helps the drug resist breaking down
	Makes the numbness wear off
	Makes the numbness last longer

15.	When a periapical abscess forms, it indicates what?
	The gums are infected
	Tooth enamel is worn thin
	A cavity
	A dead or dying tooth root
	Plaque build-up

16.	If a dentist is placing a bonded filling, she will do which of the following to ensure the filling bonds to the tooth?
	X-ray the tooth
	Scrape the tooth
	Polish the tooth
	Etch the tooth
	Drill the tooth

17.	A pedicle graft uses a flap of tissue from which part of the mouth?
	From a neighboring tooth
	From the roof of the mouth
	From the inside cheek
	From any location it can be found
	From the bottom of the mouth

18.	Where does the bone for a bone augmentation typically comes from in an implantation procedure?
	Tibia
	Radius
	Chin or Ramus
	Hip
	Humerus

19.	A veneer will correct all of the following except?
	Slightly crooked teeth
	A tooth with a cavity
	Chipped teeth
	Gaps between teeth
	Teeth with different lengths

20.	Patients should give informed consent to all dental procedures. Which of the following is not a part of informed consent?
	Informing patients of the risks of treatment
	Patient�s agreement to care
	Having a discussion of the treatment options with the patient
	Getting the patient�s or guardian�s signature
	Obtaining a dental history of the patient