perio exam
1. Attached gingiva :
A. Declines with age - in upper PM area because of narrow vestibulum
B. Increases with age - lower incisors lingual side because it is the highest area
C. Declines with age - in the lower PM area , in the vestibule where it is narrowest.
D. Increases with age - molar region is the most high-lingual side
First..Attached gingiva declines with age factors include eating and upward movement of tooth.
second-->upper PM anatomy is strong than lower PMs..
Let me know if i am correct?
2 Collagen fibers comprise what percentage connective tissue?
A. 60
B. 70
C. 45
D. 50
i think its 60..
first--collagen fibers are mostly proteins.
secondly --70 is too much protein..
3. Adding ultrasonic water:
A. Cooling device--this is the second function
B. Constant rinsing---this is what it does mostly so its primary function of adding water
C. lowers the intensity of the device does not cause tooth surface roughness--there is no connection in roughness and water
D. All true
4. What is true with regard to established lesion?
A. Increase in plasma cells, and the beginning of epithelial proliferation of JE, and creation of rete ridges.
B. Increase in plasma cells, and the Continuation of epithelial proliferation of JE, and creation of rete ridges
C. decrease in plasma cells to get to advanced lesion .
PC suppose to increase to fight the infection and inflammation
secondly--lesion is just established..so beginning of epi proliferation and
creation of new cells
5. What is true for Aggregatibacter actinomycetemcomitans, and Tannerella forsythia?
A. AA is uniquely anaerobic obligatory and therefore not sensitive to metronidazole.
B. For TF (tannerella), there is a Bspa that is stuck to the pellicle.
Bspa is Leucine-Rich Repeat BspA Protein
??
(A is false because AA is facultative anerobic; TF I do not know about BspA protein. It is not mentioned online).
6. Which bone resorption is the hardest to identify on X-ray?
A. Circumferential
B. 3 wall pocket
C. Periapical periodontitis
(my answer B)
7. What is true of junctional epthelim ?
A. Larger cells than oral epithelum
B. Coronal portion has 10-15 cellsits in histo section
C. Connected to tooth by Hemidesmosomes
D. All true
CARANZZA SAYS P23
The junctional epithelium
consists of a collarlike band of stratified squamous
nonkeratinizing epithelium. It is three to four layers thick
in early life, but the number of layers increases with age
to 10 or even 20 layers. These cells can be grouped in two
strata: basal and suprabasal. The length of the junctional
epithelium ranges from 0.25 to 1.35 mm.
The junctional epithelium is formed
8. What appears the histology of healthy gums?
A. Filtrate of neutrophils in epithelium and lymphocytes in connective tissue
B. Filtrate of neutrophils in epithelium and Macrophages in connective tissue
C. Lymphocytes in epithelium
D. Neutrophils around capillaries in connective tissue.