Question Excerpt From National Board Dental Hygiene Exam Questions

Question Excerpt From National Board Dental Hygiene Exam Questions Viruses can be distinguish from all other microorganism by virtue of Q.1) their A. ability to be isolated B. necessity to replicated intracellularly C. resistance to antibodies possession of only one type of nucleic acid D. Q.2) Kaposi's sarcoma is MOST commonly located on the A. palate B. tongue C. fauces D. floor of the mouth Q.3) Subgingival calculus receives its mineral content from A. gingival crevicular fluid B. food nutrients C. blood products D. saliva The appearance of spongy rolled gingival margins and bulbous gingival Q.4) papilla is the result of A. fibroblastic proliferation B. vascular hyperemia C. accumulation of tissue fluid D. microulceration of the epithelial attachment When radiographs are being duplicated, the duplicating film is placed Q.5) closest to the light source. The greatest density of the duplicated image will occure with the longest exposure to the light source. A. Both statements are true. B. Both statements are false. C. The first statement is true, the second is false. D. The first statement is false, the second is true.a Q.6) Infection of a primary tooth may cause A. commissural lip pits B. static bone cystC. hypodontia D. Turner's spot The main part of the facial nerve leaves temporal bone in the facial canal Q.7) through the A. stylomastoid foramen B. foramen ovale C. foramen magnum D. cribriform plate E. foramen rotundum Silver halide crystals are placed in the film emulsion BECAUSE the Q.8) crystals protect the film from heat, moisture, and chemicals. A. Both the statement and reason are correct and related. B. Both the statement and reason are correct but NOT related. C. The statement is correct, but the reason is NOT. D. The statement is NOT correct, but the reason is correct. NEITHER the statement NOR the reason is correct. E. Expanation to answer: Silver halide crystals are placed in the gelatinous film emulsion because they are sensitive to light and radiation. The black paper and outer wrapping protect the film from heat, moisture, and chemicals. A person that experiences the prodromal symptoms of Herpes simplex Q.9) virus such as tingly sensation should be rescheduled in A. 3 days B. 1 week C. 2 weeks D. 1 month All of the following are characteristics of a root planing technique, except Q.10) one. Which one is the EXCEPTION? A. stroke length become progressively longer. B. strokes are multidirectional and cross-hatched. C. lateral pressure becomes progressively heavier. D. grasp on the instrument is moderate to light. If a patient is diagnosed with active TB and is taking appropriate drug Q.11) therapy how long should you, the dental hygienist wait before providing treatment? A. 1 week B. 3 weeks C. 3 months D. 6 months Which drug is used to treat patients with advance HIV infection who Q.12) have previously received prolonged zidovudine (AZT) therapy for HIV infection? A. Nystatin (Mycostatin) B. Clotrimazole (Gyne-Lotrimin) C. Ketoconazole (Nizoral) D. Fluconazole (Diflucan) E. Didanosine (ddl) If a hygienist has a positive Mantoux skin test and no symptoms of active Q.13) TB disease she is A. Not contagious and can continue seeing patients B. Not contagious, but cannot work for 3 weeks C. Is contagious and cannot work for 3 weeks D. Is contagious and may not work until the disease is controlled Which defect is the result of the failure of the maxillary processes to fuse Q.14) with the median nasal processes? A. unilateral cleft lip B. bilateral cleft lip C. partial cleft palate D. complete cleft palate Q.15) A type of receptor which is sensitive to pain is A. Pacinian corpuscle B. Meissener's corpuscle C. free nerve endings D. end bulb of Krause E. Ruffin endings Complications of AIDS-associated necrotizing ulcerative periodontitis Q.16) (NUP) that differentiate it from the conventional non-AIDS-associated form of NUP may includeA. a deep craterlike osseous lesions B. sequestration of bone fragments C. lack of conventional periodontal pockets gangrenous stomatitis D. Explanation: Sequestration of bone fragments occurs ONLY in AIDSassociated NUP. For those patients who use oral contraceptives and require antibiotic Q.17) therapy, advise them to use a backup contraceptive A. During the course of antibiotic therapy and for 1 week after B. During the course of antibiotic therapy and 2 weeks after C. During the course of antibiotic therapy and for one month after D. During the course of the antibiotic therapy only For individuals undergoing initial cancer therapy, oral healthcare should Q.18) be performed: A. At least 14 days after initial cancer therapy B. At least 14 days before cancer therapy when possible C. Between cancer therapy sessions D. Oral healthcare should not be performed until cancer therapy is completed Individuals with a history of bone marrow or stem cell transplants Q.19) should delay elective oral procedures for: A. 1 month B. 6 months C. 9 months D. 1 year Q.20) The temporomandibular disc is attached to the A. temporal bone B. mandibular condyle C. ethmoid bone D. zygomatic process Q.21) Active transport differs from facilitated diffusion in that active transport A. moves a substance against a concentration gradient B. requires a carrier C. requires energy from magnesius adenosine triphosphate (Mg ATP) is exemplified by the movement of sodium and potassium across cell D. membranesE. all of the above Q.22) Muscles of mastication are derived from which branchial arch? A. 1st B. 2nd C. 3rd D. 4th 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 Q.23) 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. contributory negligence B. res gestae C. respondeat superior D. admission against interest Explanation: Respondeat superior indicates that the dentist is responsible for the wrongful actions of employees. Res gestae is a statement that an individual makes during a negligent act and can be used against that person in a lawsuit. Admission against interest is a statement, made at any time, that goes against the legal interest of the person making the statement. Q.24) The nerve responsible for constriction of the pupil of the eye is A. optic B. ocular C. abducent D. vagus Important centers for control of respiration and cardiovascular function Q.25) are located in the A. medulla B. pons C. midbrain D. thalamus Q.26) One of the disadvantages of steam sterilization is that itA. may not kill spores B. produce strong odor C. has long exposure time D. corrodes carbon-steel instruments What motion and which sides are active in the Magnetostrictive Q.27) ultrasonic scaler? A. linear with all sides active B. elliptical with all sides active C. linear with lateral sides active D. elliptical with lateral sides active The systolic pressure involves the ventricles relaxing to fill with blood Q.28) return by circulation. A. True B. False A patient presents with misaligned mandibular anterior teeth. Which of Q.29) the following auxiliary aids would be best to use to clean these teeth? A. dental tape B. end-tuft brush C. interdental brush D. toothpick holder Q.30) What is the best method of fluoride application for caries prevention? A. low concentration, low frequency B. low concentration, high frequency C. high concentration, low frequency D. high concentration, high frequency The cause of mottles enamel is excess consumption of systemic fluoride Q.31) between the ages of A. 6 weeks and 6 months B. 6 months and 6 years C. 6 years and 14 years D. 14 years and 21 years Q.32) The bacteria found in deep carious lesions are A. spirochetes B. Lactobacilli speciesC. Streptococcus mutans D. Actinomyces viscosus Q.33) Which of the following is an example of a high-level disinfectant? A. iodphor B. simple phenol C. glutaraldehyde D. complex phenol An industrial worker presents to the dental office with a bluish to bluishQ.34) green stain on the teeth. The inhalation of which type of metallic dust caused this? A. asbestos B. coal C. nickel D. copper Q.35) From which of the following is claculus most easily removed? A. enamel B. cementum C. pellicle D. restorative material Q.36) Which is the cause of black line stain? A. pipe smoking B. unknown C. fluoride supplements D. chromogenic bacteria Q.37) What must be changed to achieve success with oral home care? A. attitude B. behavior C. motivation D. knowledge Q.38) In what percentage is professional strength, in-office sodium fluoride A. 2 B. 5 C. 1.2 D. 1.23 Q.39) What is the landmark to initiate the root planing stroke? A. CEJ B. base of JEC. coronal edge of marginal gingiva D. coronal edge of JE Q.40) The portion of an antibody responsible for binding to antigen is the A. Fc region B. Fab region C. hinge region D. disulfide bond Q.41) Which microorganism is MOST often associated with the tongue? A. Streptococcus B. Prevotella intermedia C. Staphylococcus aureus D. Streptococcus salivarius Which is the ONLY sugar that can be utilized to product dextrans