Orthodontic correction of which of the following is most easily retained?

 # Orthodontic correction of which of the following is most easily retained?

A. Anterior crossbite

B. Spacing

C. Diastema

D. Crowding

The correct answer is A. Anterior Crossbite.

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Earliest radiographic sign of osteomyelitis

 # The earliest radiographic sign of osteomyelitis is:

A. Solitary or multiple small radiolucent areas

B. Increased granular radiopacity

C. Blurring of trabecular outlines

D. Formation of sequestrum appearing as radiopaque patches

The correct answer is C. Blurring of Trabecular outlines.

Radiographic Features

Radiodensity—about 10 days after acute infection, the density of trabeculae will be decreased, with blurred and fuzzy. For the radiographs to reveal any changes, there must be a loss of from 30 to 60% in the calcium content.

Trabecular pattern—the earliest radiographic change is that trabeculae in the involved area are thin, of poor density and slightly unsharp or blurred. The trabeculae soon lose their continuity as well as the little density present. Individual trabeculae become fuzzy and indistinct.

Ref: Textbook of Oral Medicine, 2nd Edition, Anil Govindrao Ghom

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Treatment of Fordyce's granule

 # If one of your patient is having Fordyce’s granules in his buccal mucosa, what will be your line of treatment?

A. Excision

B. No treatment needed

C. Topical application of steroids

D. Surgery followed by radiotherapy

The correct answer is B. No treatment needed. 

Ref: Shafer's Textbook of Oral Pathology, page no. 25. These glands are innocuous, have no clinical or functional significance, and require no treatment. However, very rarely a benign sebaceous gland adenoma may develop from these intraoral structures.

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Anhidrotic ectodermal dysplasia affects:

 # A known case of anhidrotic ectodermal dysplasia is brought to hospital for treatment. Which area of the body do you find mostly affected in this case?

A. Spleen

B. Skin or ectoderm

C. Kidney

D. Thyroid gland

The correct answer is B. Skin or Ectoderm. 

The most commonly occurring ectodermal dysplasia is called as ‘hereditary hypohidrotic

(anhidrotic) ectodermal dysplasia’. This shows X-linked inheritance. 

Sex—males are affected more frequently than females.

Appearance—it is characterized by hypotrichosis, hypohydrosis and anhidrosis with saddle nose appearance.

Hairs—the hair of scalp and eyebrows tend to be fine, scanty and blond.

Frontal bosses- supraorbital and frontal bosses are pronounced.

Heat intolerance—skin is often dry, soft, smooth and scaly with partial or complete absence of sweat glands. Such patient cannot perspire and they usually suffer from hyperpyrexia and inability to endure warm temperature. 

Sibling appearance—facial appearance of these individual resemble to each other, enough to be mistaken for siblings.

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