1 Primary herpetic gingivostomatitis usually occurs

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1) Primary herpetic gingivostomatitis usually occurs:

a) prior to the age 10.
b) between ages of 13 and 30.
c) at the onset of the menustral period.
d) as an occupational hazard.
2) In an inflammatory gingival lesion ,one would expect to find:

a) a decreased amount of exudate.
b) large amounts of C-reactive protein.
c) increased vascular permeaibility.
d) decreased vascular permeaibility.
3) An emotional factor is often part of the etiology in:

a) chronic gingivitis.
b) acute periodontal abcess.
c) acute herpetic gingivostomatitis.
d) necrotizing ulcerative gingivitis.
4) Histological examination of the tissues in desquamative gingivitis reveals:

a) hyperkeratosis.
b) elongationof the rete pegs.
c) aggregations of gaint cells.
d) local loss of the basement membrane.
5) In primary occlusal traumatism,the most diagnostic finding is:

a) mobility.
b) bone loss.
c) gingival recession.
d) vertical pocket formation.
6) A bacterial enzyme capable of altering the ground substance of the periodontal ligament is:

a) lysozyme.
b) collagenase.
c) streptokinase.
d) hyaluronidase.
7) A sharp instrument increases efficency by:

a) reducing the slippage and trauma.
b) enhancing tactile sensitivity.
c) minimizing the number of strokes.
d) all of the above.
8) Which of the following are indicated for the use on titanium implants:

a) carbon steel instruments.
b) ultrasonic scaling instruments.
c) stainless steel instruments.
d) plastic instruments.
9) Which attachment apparatus of the periodontium is least affected by occlusal trauma:

a) gingival attachment.
b) periodontal ligament.
c) alveolar bone.
d) cementum.
10) A patient with severe periodontal involvement requires flap surgery on the complete mandibular arch.A potential problem is the damage to the:

a) facial nerve.
b) mental nerve.
c) attachment of the mentalis muscle.
d) attachment of the inferior labialis muscle.


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