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18 Cards in this Set

  • Front
  • Back
The most common type of collagen in the keratinized tissues of the periodontium
is;
a. Type I
b. Type II
c. Type III
d. Elastin-oxytalan
a. Type I
Which cell type is found between the cells of the epithelium in the sulcus and is
responsible for defending against bacteria in the sulcus?
a. Monocyte
b. Histiocyte
c. PMN
d. Fibroblast
c. PMN
Cementum is distinguishable on a radiograph.
a. True
b. False
b. False
Which of the following statements about the gingival sulcus is false?
a. Sulcular epithelium is the fusion of the oral epithelium and the
reduced enamel epithelium.
b. The normal probing depth of the sulcus is 1-3mm.
c. Ends apically at the coronal aspect of the epithelial attachment.
d. Resists disease by forming a parakeratinized surface.
d. Resists disease by forming a parakeratinized surface.
The biologic width extends;
a. from the free gingival margin to the mucogingival junction.
b. from the free gingival margin to the crest of the alveolar bone.
c. from the coronal extent of the epithelial attachment to the crest of the alveolar bone.
d. from the apical border of the epithelial attachment to the crest of the
alveolar bone.
c. from the coronal extent of the epithelial attachment to the crest of the alveolar bone.
The absence of stippling in the attached gingiva is characteristic of
periodontal disease.
a. True
b. False
b. False
The normal distance from the CEJ to the alveolar crest is;
a. 1mm
b. 2mm
c. 3mm
d. 4mm
b. 2mm
Which of the statements below does not describe bundle bone?
a. First type of bone to form adjacent the pdl during tooth eruption.
b. Becomes a part of the cribiform plate
c. Contains Sharpey’s fibers
d. Also termed trabecular bone
d. Also termed trabecular bone
Attached gingiva is termed “attached” because;
a. The bulk of connective tissue in attached gingival is non-banded type
3 collagen.
b. The surface is without rete pegs underlying the epithelium and the
epithelium is stratified squamous.
c. Sharpey’s fibers bind the tissue to tooth root or bone.
d. a,b,c
e. b,c
e. b,c
Which area of the mouth has the narrowest band of facial attached gingiva?
a. maxillary incisors
b. mandibular incisors
c. mandibular bicuspids
d. maxillary molars
c. mandibular bicuspids
Select the statement below which is not an accurate statement about the
interdental col.
a. Covered initially by non-keratinized stratified squamous epithelium.
b. Flattens with recession of the gingiva.
c. Most concave in anterior teeth and areas adjoining a diastema.
d. Conforms to the shape of the contact point.
c. Most concave in anterior teeth and areas adjoining a diastema.
Which cell line listed below is found within the oral epithelium and serves as
an antigen recognition cell?
a. Langerhan’s cell
b. Melanocyte
c. Odland body
d. Merkel cell
a. Langerhan’s cell
According to the concept of continuous eruption, passive eruption is the
exposure of the teeth resulting from apical migration of the gingival margin.
Passive eruption is a pathologic rather than a physiologic process.
a. Both statements are true.
b. The first statement is true, the second false.
c. The first statement is false, the second true.
d. Both statements are false.
a. Both statements are true.
The most common pdl fiber group is;
a. apical
b. oblique
c. horizontal
d. interradicular
b. oblique
Which of the statements below is true regarding the periodontal ligament?
a. Narrowest at the point corresponding to the axis of tooth rotation.
b. Sufficient tension within the pdl causes principal fibers to become
taut rather than wavy.
c. Narrowest area of the pdl space averages less than 0.2mm in width.
d. b,c
e. a,b,c
e. a,b,c
Which structure(s) on the oral surface of the free gingiva corresponds to the
bottom of the sulcus?
a. Free gingival margin
b. Free gingival groove
c. Mucogingival junction
d. Rete pegs of the lamina propria
b. Free gingival groove
Of the following areas of the mouth which has no mucogingival junction?
a. Mandibular facial
b. Mandibular lingual
c. Maxillary facial
d. Maxillary lingual
e. All areas have a mucogingival junction
d. Maxillary lingual
You are checking the occlusion after placing a new filling. Not wanting to
fracture the alloy which makes up the marginal ridge you ask the patient to
bite down lightly. Under this condition the pdl is likely to distribute the load
by what mechanism?
a. viscoelastic dynamics
b. fiber distension
c. pdl remodeling
d. cemental resorption bay formation
a. viscoelastic dynamics