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National Board Dental Hygiene Exam Questions

100 Questions  I  By [email protected]
Dentist Quizzes & Trivia
The tricky or hard questions from Saunder's Review of Dental Hygiene Book, National Board Review Class, Dental Decks, National Booard Review Seminar Book.

  
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1.  Viruses can be distinguish from all other microorganism by virtue of their
A.
B.
C.
D.
2.  Kaposi's sarcoma is MOST commonly located on the
A.
B.
C.
D.
3.  Subgingival calculus receives its mineral content from
A.
B.
C.
D.
4.  The appearance of spongy rolled gingival margins and bulbous gingival papilla is the result of
A.
B.
C.
D.
5.  When radiographs are being duplicated, the duplicating film is placed closest to the light source. The greatest density of the duplicated image will occure with the longest exposure to the light source.
A.
B.
C.
D.
6.  Infection of a primary tooth may cause
A.
B.
C.
D.
7.  The main part of the facial nerve leaves temporal bone in the facial canal through the
A.
B.
C.
D.
E.
8.  Silver halide crystals are placed in the film emulsion BECAUSE the crystals protect the film from heat, moisture, and chemicals.
A.
B.
C.
D.
E.
9.  A person that experiences the prodromal symptoms of Herpes simplex virus such as tingly sensation should be rescheduled in
A.
B.
C.
D.
10.  All of the following are characteristics of a root planing technique, except one. Which one is the EXCEPTION?
A.
B.
C.
D.
11.  If a patient is diagnosed with active TB and is taking appropriate drug therapy how long should you, the dental hygienist wait before providing treatment?
A.
B.
C.
D.
12.  Which drug is used to treat patients with advance HIV infection who have previously received prolonged zidovudine (AZT) therapy for HIV infection?
A.
B.
C.
D.
E.
13.  If a hygienist has a positive Mantoux skin test and no symptoms of active TB disease she is
A.
B.
C.
D.
14.  Which defect is the result of the failure of the maxillary processes to fuse with the median nasal processes?
A.
B.
C.
D.
15.  A type of receptor which is sensitive to pain is
A.
B.
C.
D.
E.
16.  Complications of AIDS-associated necrotizing ulcerative periodontitis (NUP) that differentiate it from the conventional non-AIDS-associated form of NUP may include
A.
B.
C.
D.
17.  For those patients who use oral contraceptives and require antibiotic therapy, advise them to use a backup contraceptive
A.
B.
C.
D.
18.  For individuals undergoing initial cancer therapy, oral healthcare should be performed:
A.
B.
C.
D.
19.  Individuals with a history of bone marrow or stem cell transplants should delay elective oral procedures for:
A.
B.
C.
D.
20.  The temporomandibular disc is attached to the
A.
B.
C.
D.
21.  Active transport differs from facilitated diffusion in that active transport
A.
B.
C.
D.
E.
22.  Muscles of mastication are derived from which branchial arch?
A.
B.
C.
D.
23.  During periodontal therapy the dental hygienist discussed the importance of daily dental biofilm removal with the patient and modified the patient's flossing technique. At the continuing care appointment the hygienist notes generalized bleeding and heavy dental biofilm and calculus accumulation interproximally. Failure on the part of the patient to follow instructions given by the dental hygienist is an example of 
A.
B.
C.
D.
24.  The nerve responsible for constriction of the pupil of the eye is
A.
B.
C.
D.
25.  Important centers for control of respiration and cardiovascular function are located in the
A.
B.
C.
D.
26.  One of the disadvantages of steam sterilization is that it
A.
B.
C.
D.
27.  What motion and which sides are active in the Magnetostrictive ultrasonic scaler?
A.
B.
C.
D.
28.  The systolic pressure involves the ventricles relaxing to fill with blood return by circulation.
A.
B.
29.  A patient presents with misaligned mandibular anterior teeth. Which of the following auxiliary aids would be best to use to clean these teeth?
A.
B.
C.
D.
30.  What is the best method of fluoride application for caries prevention?
A.
B.
C.
D.
31.  The cause of mottles enamel is excess consumption of systemic fluoride between the ages of 
A.
B.
C.
D.
32.  The bacteria found in deep carious lesions are
A.
B.
C.
D.
33.  Which of the following is an example of a high-level disinfectant?
A.
B.
C.
D.
34.  An industrial worker presents to the dental office with a bluish to bluish-green  stain on the teeth. The inhalation of which type of metallic dust caused this?
A.
B.
C.
D.
35.  From which of the following is claculus most easily removed?
A.
B.
C.
D.
36.  Which is the cause of black line stain?
A.
B.
C.
D.
37.  What must be changed to achieve success with oral home care?
A.
B.
C.
D.
38.  In what percentage is professional strength, in-office sodium fluoride
A.
B.
C.
D.
39.  What is the landmark to initiate the root planing stroke?
A.
B.
C.
D.
40.  The portion of an antibody responsible for binding to antigen is the
A.
B.
C.
D.
41.  Which microorganism is MOST often associated with the tongue?
A.
B.
C.
D.
42.  Which is the ONLY sugar that can be utilized to product dextrans by Streptococcus mutans?
A.
B.
C.
D.
43.  Which vitamins prevents cheilosis and glossitis?
A.
B.
C.
D.
44.  A deficiency of vitamin B12 causes
A.
B.
C.
D.
45.  Tryptophan is a precursor to which of the following vitamins?
A.
B.
C.
D.
46.  A specific presentation of oral candidiasis, sometimes seen in otherwise healthy patients is
A.
B.
C.
D.
47.  Identify the soft tissue cyst
A.
B.
C.
D.
48.  Most common site for salivary gland tumors is the
A.
B.
C.
D.
49.  The difference between a nodule and a papule is that a papule
A.
B.
C.
D.
50.  Parasympathetic innervation to the lacrimal glands and the secretory glands of the nose and palate is transmitted via the
A.
B.
C.
D.
51.  Odontogenic cyst having the highest occurence rate is the 
A.
B.
C.
D.
52.  The surface texture of a chronic periodontal abcess would most likely be
A.
B.
C.
D.
53.  Chlorhexidine gluconate is the most effective mouth rinse for
A.
B.
C.
D.
54.  Recreational use of nitrous oxide produces effects that mimic
A.
B.
C.
D.
55.  The drug of choice for a person allergic to penicillin for prophylaxis premedication is
A.
B.
C.
D.
56.  Which local anesthetic agent would NOT be recommended for a patient reporting a history of methemoglobinemia
A.
B.
C.
D.
57.  Syncope is also called
A.
B.
C.
D.
58.  Antidiuretic hormone is released in direct response to
A.
B.
C.
D.
59.  Utilizing G.V. Black's lesion classification system, a Class III lesion would invovle the 
A.
B.
C.
D.
60.  Alcoholism is treated pharmacologically with
A.
B.
C.
D.
61.  The developmental period in which teeth and the palate are most susceptible to teratogenic agents is the
A.
B.
C.
D.
62.  Which of the following valves prevent backflow of deoxygenated blood?
A.
B.
C.
D.
63.  Initial vascular response during acute inflammation is initiated by the release of 
A.
B.
C.
D.
64.  Frictional heat from rubber cup can be controlled (reduced) by use of a light touch, rapid patting or sweeping motion, high speed, and wet abrasive agent.
A.
B.
C.
D.
65.  Which would be the MOST appropriate treatment for a healthcare worker who is the victim of a needlestick injury involving a hepatitis B-positive patient?
A.
B.
C.
D.
66.  The principal origin of the middle and lower face is the
A.
B.
C.
D.
67.  A patient has a nondraining periapical abscess and reminds the dentist that she is allergic to penicillin. Which of the following drugs could be prescribed by the dentist as an adjunct to manage the patient's abcess safely?
A.
B.
C.
D.
68.  Of the following teeth, which one is MOST frequently congenitally missing?
A.
B.
C.
D.
69.  The maximum accumulated dose of radiation that 38-year-old DH should receive is
A.
B.
C.
D.
70.  For a curet's scaling and working stroke, the angle is 70-80 degrees. Any angle less than 45 degrees results in burnished deposits.
A.
B.
71.  Blood-contaminated gloves MUST be washed before being discarded in the trash.
A.
B.
72.  The triceps brachii muscle functions to straighten (extend) the elbow joints. This muscle
A.
B.
C.
D.
73.  For which emergency listed below would it be better NOT to use oxygen?
A.
B.
C.
D.
74.  Stenosis of the bicuspid valve is likely to initially cause a backup of blood in the
A.
B.
C.
D.
75.  Embryonic cells trapped in fusion lines during facial development may become
A.
B.
C.
D.
76.  The largesr group of principal fibers of teh PDL, which prevents tilting and dislocation of the tooth, is the
A.
B.
C.
D.
77.  A patient is a hepatitis B carrier. Which one of the following is an appropriate way to prevent cross-contamination?
A.
B.
C.
D.
78.  When a radiograph is only partially imersed in developer but fully immersed in fixer, the resultant processed film will exhibit a black area.
A.
B.
79.  Overdose reaction to locan anesthetics can be exhibited with convulsions.
A.
B.
80.  Drug of choice if a patient is allergic to penicillin and takes warfarin (Coumadine) is
A.
B.
C.
D.
81.  AHA's first antibiotic of choice is
A.
B.
C.
D.
82.  A component of G- bacteria that functions as a potent endotoxin is
A.
B.
C.
D.
83.  What viral disease exhibits fever, lymphadenopathy, malaise, and palatal petechiae?
A.
B.
C.
D.
84.  Ludwig's angina is associated with infection of the mandibular tooth that spreads to the submandibular space from sublignual or submental spaces.
A.
B.
85.  Hutchinson's triad is a result of congenital infection with
A.
B.
C.
D.
86.  Which one of the following bacteria influences root caries?
A.
B.
C.
D.
87.  Which one of the following is a coating material on dental implants that improves bonding with bone?
A.
B.
C.
D.
88.  Which is NOT responsible for openning and closing the jaws?
A.
B.
C.
D.
89.  Which is a calcium channel blocker?
A.
B.
C.
D.
90.  The common factor that enhances colonization of dental plaque (biofilm) by bacterial species is the 
A.
B.
C.
D.
91.  Which oral manifestation when it persist longer than 1 month in the oral cavoty is recognized by the Centers for Disease Control and Prevention to be AIDS defining?
A.
B.
C.
D.
92.  With which condition is Sjogren's syndrome most commonly associated?
A.
B.
C.
D.
93.  Providing the patient active involvement in treatment decisions is an example of 
A.
B.
C.
D.
94.  Type IV gypsum products has the lowest compressive strength.
A.
B.
95.  Type I hypersensitivity is associated with all of the following execpt
A.
B.
C.
D.
96.  The calculus-controlling ingredient in some tartar control dentifrices is
A.
B.
C.
D.
97.  Heavy dental biofilm buildup and inflammation are not associated with localized aggressive periodontitis (LAP).
A.
B.
98.  Complete osseous healing may take up to 4-6 months.
A.
B.
99.  Which of the following best describes effective adaptation of the curet against a tooth surface?
A.
B.
C.
D.
100.  OHI-S is not used to measure debris (dental biofilm, stain, material alba, and food) and calculus.
A.
B.
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