Multiple Choice Questions(MCQ’S)

- Department of Periodontology

1. Tooth brush trauma resulting in gingival recession is considered to be:

a)Facticiousb)Iatrogenicc)Accidentald)Physiological

A) CLASSIFICATION OF DISEASES AND CONDITIONS AFFECTING THE PERIODONTIUM

2. The causative agent for histoplasmosis is:a)Bacteriab)Virusc)Fungid)Protozoa

3. One of the unique features of the most recent gingival disease classification of AAP 1999 is:

a)Allergic conditionsb)Foreign body reactionsc)Non plaque induced traumatic gingival lesionsd)Gingivitis associated with endocrinal disorders

4. Pyogenic granuloma is associated with:a) Pubertyb) Pregnancyc) Oral contraceptived) Menopause

5. Mucocutaneous lesions having gingival manifestations include all of the following except:

a) Lichen Planusb) Pemphigoidc) Erythema Multiformed) Linear Gingival Erythema

6. During gingival inflammation chronic lesions produced by lip, oral and tongue piercing can lead to:

a) Gingival erosionb) Gingival recessionc) Gingival ulcerationd) Gingival sloughing

7.During inflammation the gingival fibroblasts are stabilized by:

a) IL-1α

b) IL-1β

c) IL-4

d) IL-6

B) GINGIVAL INFLAMMATION

8. In gingivitis early lesion evolves from the initial lesion within:

a) 2 daysb) 7 daysc) 14 daysd) 21 days

9. In gingival inflammation 70% of the collagen is destroyed in:

a) Stage 1b) Stage 2c) Stage 3d) Stage 4

10.During gingival inflammation fibroblasts show cytotoxic alterations in:

a) Initial lesionb) Early lesionc) Established lesiond) Advanced lesion

11. Which of the following is not seen in initial lesion of gingivitis:

a) PMN’Sb) Erythemac) Vascular dilationd) Increased GCF flow

12. Transmigrating leukocytes reach their maximum after the onset of clinical gingivitis within:

a) 6-12 daysb) 14-21 daysc) 2-4 daysd) More than 21 days

13. Within 7 days of inflammation the MMP’s responsible for extracellular matrix remodeling is:

a) MMP-1b) MMP-2c) MMP-7d) MMP-12

14. Bluish red gingiva is observed in which stage of gingivitis:

a) 1b) 2c) 3d) 4

15. Inverse relation between number of intact collagen fibers and number of inflammatory cells appears in which stage of gingivitis:

a) Stage-1b) Stage-2c) Stage-3d) Stage-4

16.Neutral mucopolysacchride levels in chronically inflammed gingiva:

a) Increasesb) Decreasesc) Remains constantd) Non- detectable

17. During gingival inflammation perivascular loss of collagen is seen in:

a) Initial lesionb) Early lesionc) Established lesiond) Advanced lesion

18. The junctional epithelium may begin to show development of rete pegs in which stage of gingivitis:

a) Stage-1b) Stage-2c) Stage-3d) Stage-4

19. In established lesion of gingivitis the predominant cells are:

a) Plasma cellsb) PMN’sc) Lymphocytesd) Macrophages

20. Diffuse gingivitis affects the :a) Gingival marginb) Attached gingivac) Interdental papillad) All of the above

C) CLINICAL FEATURES OF CHRONIC GINGIVITIS

21. During gingival bleeding the occurrence of MMP-9 expression peaks after:

a) 5 daysb) 14 daysc) 21 days d) More than 21 days

22. Gingival bleeding in absence of gingival inflammation occurs due to:

a) Food impactionb) Biting on solid foodsc) Sharp pieces of hard foodd) Flossing

23. Heavy metal producing bluish- red linear pigmentation on gingiva is :

a) Leadb) Mercuryc) Bismuthd) Arsenic

24. In gingiva melanin pigmentation is absent or severely diminished in :

a) Albinismb) Albright syndromec) Pemphigoidd) Xanthomatous disease

25.Which of the following exogenous factor increases the melanin pigmentation

in gingiva :a) Coalb) Tobaccoc) Metal dustc) Coloring agents

26. In animal studies the mechanical stimulation by brushing increases the proliferative activity of basal cells of junctional epithelium as compared to scalers by :

a) 1.5 foldb) 2.5 foldc) 3.5 foldd) 4.5 fold

27. Diffuse puffiness and softening appears in :a) Acute gingivitisb) Subacute gingivitisc) Recurrent gingivitisd) Chronic gingivitis

28. Smooth surfaced texture is observed in :a) Desquamative gingivitisb) Atrophic gingivitisc) Hyperkeratosisd) Fibrotic gingiva

29. The incidence of recession after age of 50 years is :

a) 25%b) 50%c) 75%d) 100%

30. Stillman clefts are gingival changes related to :

a) Textureb) Consistencyc) Contourd) Position