MCQs in Periodontology

Chapter 3: Etiology of Periodontal Diseases

 

  1. Example for composite index:·

 

  1. DMF
  2. OHI
  3. PMA
  4. Gingival bone count

 

 

 

 

 

 

The answer is: D

 

  1. For periodontal disease, smoking is a:

 

  1. Risk factor
  2. Prognostic factor
  3. Both of the above
  4. None of the above

 

 

 

 

 

 

The answer is: C

 

  1. When there is bleeding on probing, the score of a gingival index is:

 

  1. 1
  2. 2
  3. 3
  4. 4

 

 

 

 

 

 

The answer is: B

 

  1. Modified. gingival index:

 

  1. Is an invasive index
  2. Is a noninvasive index
  3. ·Assesses attachment loss
  4. Assesses bleeding on probing

 

 

 

 

 

 

The answer is: B

 

  1. The total number of periodontal sites that are examined in NIDCR method:

 

  1. 32
  2. 28
  3. 14
  4. 7

 

 

 

 

 

 

The answer is: B

 

  1. The prevalence of gingivitis is higher in:

 

  1. Prepubertal children
  2. Adolescents
  3. Young adults
  4. Older adults

 

 

 

 

 

 

The answer is: B

 

  1. Which of the following groups is more likely to have gingivitis:

 

  1. Adolescent males
  2. Adolescent females
  3. Adult males
  4. Adult females

 

 

 

 

 

 

 

The answer is: A

 

  1. The direct cause of gingivitis:

 

  1. Calculus
  2. Plaque
  3. Faulty restoration
  4. Malocclusion

 

 

 

 

 

 

 

 

The answer is: B

 

  1. Equipment required for periodontal index:

 

  1. Light I
  2. light and mouth mirror
  3. Light, mouth mirror and explorer
  4. Light, mouth mirror and graduated probe

 

 

 

 

 

 

 

 

The answer is: D

 

  1. The prevalence of periodontitis:

 

  1. Increases with increase in age
  2. Decreases with increase in age
  3. Is.same .. in all age groups
  4. Is the risk of developing a disease

 

 

 

 

 

 

 

The answer is: A

 

  1. The number of quadrants of that is examined for gingival bleeding in NIDCR protocol for gingival assessment:

 

  1. One
  2. Two
  3. Three
  4. Four

 

 

 

 

 

 

The answer is: B

 

  1. The periodontal index score when the teeth are depressible in the sockets:

 

  1. 2
  2. 4
  3. 6
  4. 8

 

 

 

 

 

 

 

The answer is: D

 

  1. Which of the following is not a "Ramjford's tooth":

 

  1. 16
  2. 36
  3. 14
  4. 21

 

 

 

 

 

 

The answer is: C

 

  1. The indirect method for measuring attachment loss:

 

  1. Russel's method
  2. Ramjford' s method
  3. Lobene' s method
  4. Loe' s method

 

 

 

 

 

 

The answer is: B

 

  1. The tooth to be examined in PDI when 21 is missing:

 

  1. 11
  2. 22
  3. 31
  4. None

 

 

 

 

 

 

 

The answer is: D

 

  1. An ESI score of (20,3.0), has to be interpreted as:

 

  1. 20 teeth examined show 3 mm attachment loss
  2. 20 sites examined show 3 mm attachment loss
  3. 20o/o of sites examined have a disease and 3 mm is the average attachment loss
  4. 20 sites 1have gingival inflammation and 3 sites have attachment loss

 

 

 

 

 

 

 

 

The answer is: C

 

  1. The NIDCR probe has markings separated by:

 

  1. 1 mm
  2. 2 mm
  3. 3 mm
  4. 4 mm

 

 

 

 

 

 

 

The answer is: B

 

  1. The NIDCR method for furcation assessment of maxillary posteriors uses:

 

  1. Naber's probe
  2. No.23 explorer
  3. No.17 explorer
  4. William's probe

 

 

 

 

 

 

 

The answer is: B

 

  1. The prevalence of which of the following increases with age:

 

  1. Attachment loss
  2. Periodontal pocketing
  3. Both of the above
  4. None of the above

 

 

 

 

 

 

 

The answer is: A

 

  1. Which of the following is· not a risk factor for periodontal disease:

 

  1. Smoking
  2. Nutritional deficiency
  3. Type I diabetes
  4. Type II diabetes

 

 

 

 

 

 

The answer is: B

 

  1. The primary pathogen for localized aggressive periodontitis is:

 

  1. Bactericides forsythus
  2. Prevotella intermedia
  3. Actinobacillus
  4. Spirochaetes actinomycetem comitans

 

 

 

 

 

 

The answer is: C

 

  1. The periodontal pathogenicity of Actinobacillus actinomycetemcomitans is primarily attributed to its production of:

 

  1. Collagenase
  2. Hyluronidase
  3. Leukotoxin
  4. Platelet aggregation factor

 

 

 

 

 

 

 

The answer is: C

 

  1. Depressed neutrophil chaemotaxis is seen in:

 

  1. Localized. aggressive periodontitis
  2. Generalized aggressive periodontitis
  3. Both of the above
  4. None ·of the above

 

 

 

 

 

 

 

The answer is: C

 

24. Which of the following is not a Kochs Postulate :

 

  1. The bacteria should be able to be isolated from diseased tissue
  2. When inoculated in experimental animals, bacteria may or may not cause disease
  3. Pure cultures can be obtained
  4. Bacteria should be able to be isolated from the diseased tissue in the experimental animals

 

 

 

 

 

The answer is: B

 

25. To identify the key microorganisms in periodontal disease, Koch's postulates have been modified by:

 

  1. Socransky
  2. Glickman
  3. Russel
  4. Vermillion

 

 

 

 

The answer is: A

 

26. After cleaning and Pumicing the tooth surface plaque formation begins to form after:

 

  1. Few minutes
  2. 1 hour
  3. 2 to 4 hours
  4. 1 day

 

 

 

 

The answer is: A

 

27. Which of the following organism is not implicated in etiology of Periodontal disease:

 

  1. Bacteroides
  2. Wollinella
  3. Neisseria
  4. Eikenella

 

 

 

 

 

The answer is: C

 

28. In CPITN:

 

  1. The dentition is divided into five segments.
  2. Pocketing of 4-5 mm, that is, when the gingival margin is on the clear area is code no. 3.
  3. Pocketing of 6mm or more, that is when the gingival margin is on the black area of the probe is code no. 4.
  4. For appropriate treatment plan code 2 requires improvement in home care.
  5. For appropriate treatment plan code 3 require supra and subgingival scaling and improvement in home care.

 

 

 

 

 

The answer is: E

 

29. The growth of porphyromonas gingivalis is enhanced by metabolic by-products:

 

  1. Succinate from campylobacter rectus.
  2. Protoheme from capnocytophaga.
  3. Protoheme from campylobacter rectus.
  4. Succinate from veillonella.
  5. Protoheme from fusobacterium.

 

 

 

 

 

The answer is: C

 

30. here is a partial or complete loss of lamina dura in:

 

  1. Hypoparathyroidism.
  2. Hyperparathyroidism.
  3. Beriberi.
  4. Pellagra.
  5. Hypervitaminosis D.

 

 

 

 

 

The answer is: B

 

31. Vitamin B deficiency results in:

 

  1. Deep periodontal pockets.
  2. Hemorrhagic diathesis in the gingival.
  3. Loss of lamina dura.
  4. Glossitis, glossodynia, gingivitis, inflammation of entire oral mucosa.
  5. Accelerated gingival wound healing.

 

 

 

 

 

 

The answer is: D

 

32. A forcibly embedded tooth brush bristle may be retained in the gingival and cause:

 

  1. Gingival recession.
  2. Periodontal pocket.
  3. Attachment loss.
  4. Bone loss.
  5. Gingival abscess.

 

 

 

 

 

The answer is: E

 

33. Mineralization of plaque may start intracellularly in:

 

  1. Streptococcus sanguis and actinomyces viscosus species.
  2. Porphyromonas gingivalis and prevotela intermedia species.
  3. Diphtheroid, bacterionema, veillonella species.
  4. Borrelia vincenti and actinobacillus actinoemycetum comitans.
  5. Capnocytophaga and campylobacter rectus and tenneralla forsythus.

 

 

 

 

 

The answer is: C

 

34. Mineral precipitation results from a local rise in the degree of saturation of calcium and phosphate ions because:

 

  1. A decrease in the pH of the saliva cause precipitation of calcium and phosphate ions.
  2. An increase in the pH of the saliva cause precipitation of calcium and phosphate ions by lowering of precipitation constant.
  3. A decrease in pH of saliva lowers precipitation constant leading to precipitation of calcium and phosphate ion.
  4. An increase in the pH of saliva increases precipitation constant leading to precipitation of calcium and phosphate ions.
  5. An increase in the pH of saliva with no effect on precipitation constant.

 

 

 

 

The answer is: B

 

35. The incidence of lingual recession and the pocket formation and radiographic evidence of bone loss among subjects with a mean age of 22 years who wore lingual “barbells” for 2 years or more according to camphell et al is:

 

  1. 97%.
  2. 50%.
  3. 62%.
  4. 10%.
  5. 5%.

 

 

 

 

 

The answer is: B

 

36. Which of the following is associated with etiology of periodontal disease:

 

  1. Actinomyces
  2. Capnocytophaga
  3. Veillonella
  4. Eubacterium

 

 

 

 

 

The answer is: D

 

37. Which of the following organisms is not implicated in the etiology of periodontal disease:

 

  1. Bacteroids
  2. Wollinella
  3. Neisseria
  4. Eikenella

 

 

 

 

 

 

 

 

 

The answer is: C