A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. Dental plaque is formed after :
A. 6 hours.
B. 12 hours.
C. 24 hours.
D. 48 hours
2. 17.Dental plaque composed mainly of:
A. Bacteria.
B. Inorganic materials.
C. Food
D. None of these
3. Bass brushing has the advantage of the bristles enters in the cervical area , and it is recommended for all patients:
A. Both statements are true.
B. Both statements are false.
C. First is true ,second is wrong.
D. First is wrong , second is true
4. An 18 years old Patient present complaining of pain, bad breath and bleeding gingival. This began over the weakened while studying for the final exam. The patient may have which of the following conditions:
A. Acute necrotizing ulcerative gingivitis
B. Rapidly progressive periodontitis
C. Desquamative gingivitis.
D. Acute periodontal cyst
5. Subgingivally scaling and root planning is done by:
A. Gracey Curette.
B. Hoe.
C. Chisel
D. All these
6. All of these are right ways to handle the instrument EXCEPT ?
A. Modified pen handle.
B. Inverted pen.
C. Pen handle.
D. Palm and thumb
7. The water reins devices for periodontal therapy has a main goal which is: Remove plaque.
A. Prevent plaque attachment.
B. Dilute bacterial toxin.
C. Remove dental pocket
D. All of these
8. Cementum in cervical 2/3 have:
A. A Cellular intrinsic fiber.
B. A Cellular extrinsic fiber.
C. Cellular mixed fibers.
D. Intermediate cementum
9. For treatment of pericoronitis:
A. Extraction of the tooth.
B. Analgesic + Sterility + Antibiotic.
C. Cleaning with concentrated phenol.
D. None
10. After scaling and root planning healing occur by:
A. Long junctional epithelium.
B. New attachment.
C. New bone and connective tissue formation.
D. New attached periodontal ligament fibers
11. Plaque consists of:
A. Bacteria.
B. Inorganic material.
C. Food
D. All of these
12. Which of the following statement is true for the reported relationship of periodontal disease and diabetes mellitus:
A. The reported incidence of periodontal disease in the diabetes is less than that for nondiabetic.
B. Pts with history of diabetes of less than 10 years have more periodontal disease destruction than those with history of longer than 10 years.
C. The prevalence of periodontal disease increase with the advancing age of the diabetic.
D. The prevalence of periodontal disease increase with the better metabolic coronal of the diabetic state
13. Periodontal ligament fibers in the middle third of the root is:
A. Oblique.
B. Horizontal.
C. Transeptal
D. Any of these
14. What is the benefit of rinsing the mouth with water:
A. Plaque removal.
B. Calculus removal.
C. Washing the food debris
D. All of these
15. Gingival condition occur in young adult has good oral hygiene was weakened:
A. ANUG.
B. Desqumative gingivitis.
C. Periodontitis.
D. Gingivitis
16. Chlorhexidine is used as mouth wash in the concentration of:
A. 0.1-0.2 %.
B. 1-2 %.
C. 5-10 %.
D. 20 %
17. Patient comes to you with edematous gingiva, inflamed, loss of gingival contour and recession, what's the best tooth brushing technique?
A. Modified bass.
B. Modified stillman.
C. Charter.
D. Scrub
18. Main use of dental floss:
A. Remove calculus.
B. Remove over hang.
C. Remove bacterial plaque.
D. Remove food debris
19. Which of the following statements is true regarding dental calculus:
A. It is composed entirely of inorganic material.
B. It is dens in nature and has a rough surface.
C. It is mineralized dental plaque.
D. B and C only
20. Biological width:
A. 1 mm.
B. 2 mm.
C. 3 mm.
D. 4 mm
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