Thin bluish line around the gingival margin

 # A thin bluish line around the gingival margin is due to the absorption of :

 A. Silver

 B. Mercury

 C. Drugs like tetracycline

 D. Lead

The correct answer is D. lead.

Heavy metals cause gingival pigmentation in areas of inflammation only, where the increased permeability permits the seepage of metal into the surrounding tissue.

Lead Line (Burtonian Line) --- Bluish red or deep blue linear pigmentation in marginal gingiva

Silver (argyria) --- Violet marginal line

Bismuth, arsenic and mercury --- Black marginal line

Mesenteric line --- Delicate, brown or black pigmented non cariogenic plaque found on the enamel at the cervical margin of the tooth

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Plasma cell gingivitis

 # Plasma cell gingivitis is seen in individuals having the habit of chewing of the following types of flavored chewing gum?

A. Peppermint flavored

B. Clove flavored

C. Cinnamon flavored

D. Banana flavored

The correct answer is  C. Cinnamon flavored.

PLASMA CELL GINGIVITIS

- The gingiva appears red, friable, granular, and bleeds easily. 

- It may be associated with cheilitis and glossitis.

- Plasma cell gingivitis is a contact hypersensitivity reaction most frequently attributed to Cinnamon flavored chewing gum. 

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Gingival manifestation is seen maximum with:

 # Gingival manifestation is seen maximum with:

 A. AML

B. CLL

C. CML

D. ALL

The correct answer is A. AML.

Gum hypertrophy due to leukemic infiltration of the gingiva is a frequent finding in:

- M4: Acute myelomonocytic leukemia (Naegeli type)

- M5: Acute monocytic leukemia (Schilling type)

Incidence of gingival enlargement is highest in acute monocytic leukemia (66.7%), followed by acute myelocytic monocytic leukemia (18.7%) and myelocytic leukemia (3.7%). Leukemic gingival enlargements are not found in edentulous patients or in chronic leukemia.

Leukemic gingival enlargement occurs only in acute type and not in chronic leukemia. It occurs mostly in acute monocytic leukemia. The gingival connective tissue is infiltrated with immature leukocytes.

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AIIMS MDS Entrance Exam MCQS - May 2016

# Which of the following cannot be used to block undercuts intraorally?
A. Addition silicon
B. Plaster of Paris
C. Irreversible hydrocolloid
D. Temporary restorative material

# Inability of a material to sustain plastic deformation before the fracture occur:
A. Toughness
B. Hardness
C. Brittleness
D. Critical Stress