Carcinoma in situ implies that the lesion shows
A. encapsulation of cell mass
B. metastasis of malignant cells
C. Dysplasia of cells confined within the epithelium
D. extensive invasion of malignant cells to surrounding tissue
C. Dysplasia of cells confined within the epithelium
These are cancer cells
Gingival curettage serves to do each of the following EXCEPT one. Which on is the EXCEPTION?
A. to shrink shallow pockets
B. to reduce fibrotic tissue
C. to remove ulcerated epithelium
D. to improve tissue tone
B. to reduce fibrotic tissue
Inadcertent soft-tissue curettage removes which of the following?
A. Oral epithelium
B. Sulcular epithelium
C. Cervical fibers of the periodontal ligament
D. Horizontal fibers of the periodontal ligament
B. Sulcular epithelium
Which of the following condition occurs more often in women than in men?
A. Cirrhosis
B. Oral cancer
C. Rheumatoid arthritis
D. Pancreatic cancer
E. Atherosclerosis
C. Rheumatoid Arthritis
A maxillary left lateral incisor has a 7-mm pocket on the mid-palatal aspect of the tooth. Which of the following represents the most likely secondary etiologic agent involved in the fomation of this pocket?
A. enamel pearl
B. accessory canal
C. overhangi
D. Palatal gingival groove
Scavenger systems in nitrous oxide/oxygen sedation equipment funtion to
A. minimize gas leakage
B. collect the gas for re-use
C. reduce microbial contamination
D. eliminate errors in the tank hook-up
E. limit the concentration of the mixture
D. eliminate errors in the tank hook-up
The median palatine raphe is found on the
A. uvula
B. oropharynx
C. hard palate
D. soft palate
C. Hard palate
An accumulation of which of the following cells suggests that a patient has had an immunologic response to plaque?
A. Lymphocytes
B. Macrophages
C. Mast Cells
D. Monocytes
E. Neutrophils
A. Lymphocytes
The tensor veli palatini muscle is innervated by which of the following nerves?
A. Maxillary division of the trigeminal
B. Mandibular division of the trigeminal
C. External laryngeal branch of the vagus
D. Internal laryngeal branch of the vagus
B. Mandibular division of the trigeminal
Which of the followig represents the reccommended millimeter thickness of lead for a protective lead apron?
A. 0.1
B. 0.15
C. 0.2
D. 0.25
E. 0.3
D. 0.25
Following gingival curettage, healing begins with
A. Collagenaion
B. lymphocytic infiltration
C. Blood clot formation
D. mitosis of epithelial cells
E. Fibroblastic proliferation and capillary budding
C. Blood clot formation
The most predominant white blood cell in the healing gingival 12 hours after soft tissue currettage is the
A. basophil
B. mast cell
C. neutrophil
D. eosinophil
E. macrophage
C. Neutrophil
In Pregnancy gingivitis, which of the following bacteria would you expect to see in increased numbers?
A. Actinobacilius actinomycetemcomitans
B. Prevotella intermedia
C. Streptococcus mutans
D. Actinomyces israelii
E. Capnocytophaga
B. Prevotella intermedia
If the clinical attachment level and the probing depth measurements of a tooth were equal, then the margin of the gingival tissue would be located
A. apical to the contact point
B. coronal to the contact point
C. at the cementoenamel junction
D. apical to
C. at the cementoenamel junction
Which of the following medications used to prevent rejection in patients with solid organ transplant might result in gingival overgrowth?
A. Prednisone (Sterapred)
B. Cyclosporine (Neoral)- Organ rejection
C. Azathioprine (Imuran)- Kidney transplant
D. Cy
B. Cyclosporine (Neoral)
A carious developmental pit is most likely found on the lingual surface of a
A. mandibular central incisor
B. mandibular lateral incisor
C. Maxillary canine
D. maxillary central incisor
E. maxillary lateral incisor
E. Maxillary lateral incisor
The only frenulum which does NOT contain any muscle fibers is the
A. lingual
B. Maxillary
C. Mandibular
D. Buccinator
B. Maxillary
A patient presents with NUG. Which of the following microorganisims most likely predominate?
A. Gram- positive rods
B. Gram- negative cocci
C. Spirilla and Porphyromonas gingivalis
D. Spirochetes and Prevotella intermedia
E. Fusobacteria and filamentous r
D. Spirochetes and Prevotella intermedia
Nutrients are carried throughout all tissues of the human body by which of the following systems?
A. Digestive
B. Lymphatic
C. Excretory
D. Circulatory
E. Respitatory
D. Circulatroy
Which of the following cysts forms around the crown of an impacted tooth?
A. Residual
B. Primordial
C. Periapical (radicular)
D. Denigerous (follicular)
E. Odontogenic
D. Denigerous (follicular)
Soft tissue gingival curettage is most likely to cause which of the following?
A. Shrinkage
B. Reattachment
C. A decrease in fibrotic tissue
D. Rekeratinization
A. Shrinkage
The uptake of water in a reversibe hydrocolloid is by
A. Syneresis
B. Hysteresis
C. Imbibition
D. Absorption
E. Adsorption
C. Imbibition
Each of the following oral microorganisms could colonize
soft tissue EXCEPT one. Which one is this
EXCEPTION?
A. Neisseria sicca
B. Candida albicans
C. Streprococcus mitis
D. Streptococcus mutans
E. Streprococcus salivarius
D. Streptococcus mutans
The virus responsible for which of the following diseases
is the MOST resistant to chemical and physical
agents?
A. AIDS
B. Herpes
C. Measles
D. Influenza
E. Hepatitis
E. Hepatits
Root hypersensitivity diminishes as the tooth forms
which of the following?
A. Mantle dentin
B. Secondary de'ntin
C. Cellular cementum
D. Acellular cementum
C. Cellular cementum
A 21-year-old woman, who is in her third trimester of
pregnancy, has a pyogenic granuloma (3 nun in diameter)
between her maxillary left lateral incisor and .
canine. After offering oral hygiene instructions,
which of the following should be the NEXT step
A. perform an oral prophylaxis
Which of the following nerves supplies the intrinsic
muscles of the tongue?
A. Vagus
B. Facial
C. Lingual
D. Hypoglossal
E. Glossopharyngeal
D. Hypoglossal
Which of the following tissues and organs idare the
MOST radioresistant?
A. Nerves
B. Glands
C. Skin
D. Bonemamow
E. Reproductive organs
A. Nerves
Superficial lymphatic vessels of the breast drain primarily
into which of the following nodes?
A. Axillary
B. Cervical
C. Substernal
D. Subclavicular
E. Supraclavicular
A. Axillary
Primarily, systemic fluorides protect the teeth by
which of the following actions?
A. Lowering their surface energy
B. Creating bacteriostasis
C. Inhibiting enzyme activity
D. Reducing the fluoroapatite solubility
E. Improving their morphology
D. Reducing the fluoroapatite solubility
Bell's palsy involves which of the following cranial
nerves?
A. 111
B. IV
c. V
D. VI1
E. IX
D. VII
Periodontal disease is considered to be controlled
when
A.no bleeding on probing is present.
b. the gingival tissue is firm, pink and stippled.
c. no pockets are deeper than 3 mm.
d. calculus and plaque have been removed
e.the gingival tissue height appro
A. no bleeding on probing is present
Curets can be hand-sharpened on a flat stone. This
process becomes the MOST effective when the face
of the curet meets the stone at an angle of
A. 45-60".
B. 70-80".
C. 80-90".
D. 100-110".
E. 120-130".
D. 100-110
Radiographic intensifying screens are used for
A magnifying images.
B. increasing detail.
C. reducing the exposure time.
D. speeding the processing time.
E decreasing the processing time
C. reducing the exposure time
Following an occurrence of primary herpetic
gingivostomatitis, the herpes simplex virus can
remain dormant in which of the following?
A. Muscle
B. Epithelium
C. Bloodstream
D. Sensory ganglia
E. Connective tissue
D. Sensory ganglia
Each of the following characterizes an ideal chemical
disinfectant EXCEPT one. Which one is this EXCEPTIO@
A. Heat-stable
B. Long shelf-life
C. Water solubility
D. Activity against vegetative microbes
E. Activity against microbial spores
A. Heat-stable
A 70-year-old edentulous patient routinely cleans and
soaks her dentures in hot water. Which of the following
can occur as a result of this practice?
A. Softening the base
B. Distorting the base
C. Loosening the teeth
D. Crazing the denture
E. Discoloring
B. Distorting the base
Each of the following describes an action of desensitizing
agents EXCEPT one. Which one is this EXCEPTIO@
A. Inhibition of the sensory nerve function in dentin
B. Stimulation of secondary dentin formation
C. Deposition of insoluble salts in the exposed de
E. Reduction of pulpal inflammation
The submandibular salivary glands are BEST examined
by which of the following?
A. Percussion
B. Transillumination
C. Bimanual palpation
D.Indirect vision with the mouth mirror
E.Asking the patient to lift the tongue up and back
C. Bimanual palpation
An antihistamine is thc drug of choice for treating
which of the following?
A. Hay fever
B. Common cold
C. Anaphylactic shock
D. immune suppression
E. Vitamin C overdosc
A. Hay fever
The principal factor that controls x-ray penetration is
A. film.
B. time.
C. distance.
D. wavelength.
E. milliamperage.
D. Wavelength
Dental hygienists should complete informed consent
procedures with patients. Each of the following is a
component of informed consent EXCEPT one. Which
one is this EXCEPTION
A.Insuring patients' agreement for care
B. Informing patients of treatment risks
C. Completing outline of oral hygiene education
Which of the following explains why the application
of excessive heat to a tooth causes the patient pain?
A. Stimuli of any kind to the pulp result in the sensation of pain
B. Excessive stimulation of heat receptors results in pain
C. Heat receptors in th
A. stimuli of any kind to the pulp result in the sensation of pain