Flashcards in Sample Questions 2006 Deck (60)
As a dental amalgam restoration ages in the oral cavity, microleakage decreases because of:
a) fluoride release.
b) galvanic currents.
c) increase in surface flow.
d) increase in edge strength.
e) formation of corrosion products.
E) FORMATION OF CORROSION PRODUCT.
A fall in blood pressure could occur when a patient is experiencing each of the following conditions EXCEPT one. Which one is the EXCEPTION?
d) Allergic reaction
e) Addison's disease
While applying pit & fissure sealants, a dental hygienist will condition the tooth with an acid etchant. Which one of the following does this procedure serve to increase?
Which of the following is most sensitive to the effects of radiation?
b) Optic lens
c) Muscle cells
d) Bone marrow
e) Mature erythrocytes
D) BONE MARROW
Tongue piercing is associated with each of the following intraoral conditions EXCEPT one. Which one is this EXCEPTION?
a) Gingival recession
b) Airway obstruction
c) Aspiration of jewelry
d) Intraoral pigmentation
e) Chipping of incisal edges
D) INTRAORAL PIGMENTATION
The generalized release of histamine can cause each of the following EXCEPT one? Which one is this EXCEPTION?
e) Increased capillary permeability
Which of the following represents the muscle that protrudes the mandible?
c) Lateral pterygoid
d) Medial pterygoid
e) Anterior belly of digastric
C) LATERAL PTERYGOID
Which of the following drugs acts upon the anaerobic organisms of necrotizing ulcerative gingivitis?
a) Nystatin (Mycostatin)
b) Penicillin (Pen-Vee)
c) Griseofulvin (Fulvicin)
d) Metronidazole (Flagyl)
e) Amoxicillin ( Amoxil)
D) METRONIDAZOLE (FLAGYL)
Which of the following cells is most active in antibody production?
b) Mast cell
d) Plasma cell
e) Polymorphonuclear leukocyte
D) PLASMA CELLS
A patient presents with a well-defined, scalloped, red area along a gingival margin. This redness is adjacent to a base-metal crown. Each of the following could have caused the redness EXCEPT one. Which one is this EXCEPTION?
a) Subgingival crown margin
b) Nickel allergy
c) Poorly contoured crown
d) Poor oral hygiene
e) Galvanic reaction
E) GALVANIC REACTION
A dental hygienist notices a 4-mm probing depth changed to 2-mm at the 4-week evaluation after periodontal debridement. The most likely reason for this is:
a) increase in collagen production.
b) decrease in edema within the tissue.
c) formation of a long junctional epithelium.
d) decrease in vasculitis in the connective tissue.
e) gain in periodontal attachment to the tooth surface.
B) DECREASE IN EDEMA WITHIN THE TISSUE.
Which of the following defects in restoration could be recontoured?
c) Open margin
d) Under-contoured restoration
e) Deficient proximal contact
Objectives of individual health instruction must be designed in accordance with each of the following EXCEPT one. Which one is the EXCEPTION?
a) Values of the patient
b) Available time and resources
c) Age & sex of the patient
d) Cultural beliefs of the patient
e) Values of the dental health provider
E) VALUES OF THE DENTAL HEALTH PROVIDER
If an acid etch is used in preparation for a sealant, then the most effective etch is achieved using which of the following?
a) Boric acid
b) Acetic acid
c) Citric acid
d) Phosphoric acid
e) Hydrochloric acid
D) PHOSPHORIC ACID
Each of the following statements correctly describes the absorbed dose of radiation EXCEPT one. Which one is this EXCEPTION?
a) Applies to all types of ionizing radiation.
b) Measurement is taken at the skin surface.
c) Describes the maximum permissible dose.
d) Rad is the traditional unit of measurement.
e) Measures quantity of radiation dose received.
C) DESCRIBES THE MAXIMUM PERMISSIBLE DOSE
Tylenol with codeine falls into which Drug Enforcement Administration (DEA) schedule of controlled substances?
a) Schedule I
b) Schedule II
c) Schedule III
d) Schedue IV
e) Schedule V
C) SCHEDULE III
General sensation on the anterior 2/3 of the tongue is supplied by which of the following nerves?
c) Chorda tympani
e) Lesser petrosal
The etiology of myxedema is:
a) hyposecretion of the parathyroid.
b) hyposecretion of the thyroid gland.
c) hyposecretion of the adrenal gland.
d) hypersecretion of the thyroid gland.
e) hypersecretion of the adrenal gland.
B) HYPOSECRETION OF THE THYROID GLAND.
Which of the following represents the most efficient mechanism by which antibodies induced bacteriolysis?
a) Release of lymphokines
b) Stimulation of macrophages
c) Neutralization of bacterial toxins
d) Activation of the complement system
e) Stimulation of bacteriophages
D) ACTIVATION OF THE COMPLEMENT SYSTEM
In comparison to manual instrumentation, which of the following ultrasonic techniques is necessary to remove calculus?
a) Increased grasp pressure, rapid movement
b) Decreased grasp pressure, rapid movement
c) Increased grasp pressure, continuous movement
d) Decreased grasp pressure, continuous movement
e) Moderate grasp pressure, slow movement
D) DECREASED GRASP PRESSURE, CONTINUOUS MOVEMENT
Gingival tissues that are inflamed bleed upon probing because of certain changes taking place in the pocket epithelium. Which of the following represents these changes?
Each of the following describes generalized tetracycline stain EXCEPT one. Which one is the EXCEPTION?
a) Initiated in adolescence
b) Acquired in early childhood
c) Considered intrinsic endogenous
d) Acquired through fetal circulation
e) Can be shades of green, yellow, and gray
A) INITIATED IN ADOLESCENCE
Which of the following represents the most appropriate daily OTC fluoride rinse?
a) 0.5% APF
b) 0.63% SnF2
c) 0.05% NaF
d) 0.2% NaF
e) 1.19% NaF
C) 0.05% NaF
Which of the following most directly influences the retention of a sealant?
a) Age of the patient
b) Technique of the operator
c) Morphology of the tooth surface
d) Amount of fluoride in the surface enamel
e) Time span between the eruption of the tooth and sealant placement
B) TECHNIQUE OF THE OPERATOR
Each of the following describes the appearance of cervical burnout EXCEPT one. Which one is this EXCEPTION?
a) Demonstrates lateral root edge
b) Radiolucent on dental radiographs
c) Has distinct rounded inner border
d) Often confused with a root caries lesion
e) Phenomenon of x-ray penetration of the cementoenamel junction (CEJ)
E) PHENOMENON OF X-RAY PENETRATION OF THE CEMENTOENAMEL JUNCTION (CEJ)
What type of immunity is conferred by administration of the hepatitis B vaccine?
b) Natural active
c) Natural passive
d) Artificially acquired active
e) Artificially acquired passive
D) ARTIFICIALLY ACQUIRED ACTIVE
In a prescription, warnings to the patient regarding the proper use of the drug are found in the:
Each of the following can appear as white-surface lesions of the oral mucosa EXCEPT one. Which one is the EXCEPTION?
b) Lichen planus
c) Chemical burn
d) Solar cheilitis
e) Geographical tongue
Which of the following alterations is associated with progression from a healthy gingival sulcus to gingivitis?
a) Appearance of staphylococci in the sulcus
b) Predominance of yeasts in subgingival plaque
c) Increase in demonstrable gram-negative anaerobic rods in plaque
d) Predominance of spirochetes in supragingival plaque
e) Rapid toxin synthesis preceding crestal bone loss
C) INCREASE IN DEMONSTRABLE GRAM-NEGATIVE ANAEROBIC RODS IN PLAQUE