Extraction of tooth during acute infection:

 # Extraction of tooth during acute infection:

A. Can cause extensive spread of infection

B. Helps drainage and relieves pain if proper antibiotic is given and its adequate blood level is reached

C. Can cause sudden death due to pulmonary embolism

D. Can lead to trigeminal neuralgia in postoperative period

The correct answer is B. Helps drainage and relieves pain if proper antibiotic is given and its adequate blood level is reached

The most rapid resolution of an infection secondary to pulpal necrosis is obtained, when the tooth is removed as early as possible. Therefore acute infection should not be a contraindication to extraction. If access and anesthetic considerations can be met, the tooth should be removed as early as possible after maintaining proper antibiotic level. 

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Saw toothed Rete Pegs are seen in:

 #  Saw toothed Rete Pegs are seen in:

A. Lichen planus

B. Lichenoid reaction

C. Leukoplakia

D. Leukoedema

The correct answer is A. Lichen Planus.

Histopathologic examination of lesional tissue is the most relevant investigation in cases of Oral Lichen Planus. Typical findings include hyperparakeratosis or hyperorthokeratosis with thickening of the granular layer, acanthosis with intracellular edema of the spinous cells in some instances, the development of a ‘saw tooth’ appearance of the rete pegs. Band-like subepithelial mononuclear infiltrate consisting of T-cells and histiocytes; increased numbers of intraepithelial T-cells; and degenerating basal keratinocytes that form colloid (Civatte, hyaline, cytoid) bodies, which appear as homogenous eosinophilic globules are consistently seen.

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Bleeding joints is a characteristic feature of:

 #  Bleeding joints is a characteristic feature of:

A. Vitamin C deficiency

B. Vitamin K deficiency

C. Hemophilia

D. Thrombocytopenia

The correct answer is C. Hemophilia.

Patients with hemophilia exhibit persistent bleeding, either spontaneous or following even slight trauma that produces the mildest of abrasions or cuts. Hemorrhage into the subcutaneous tissues, internal organs, and joints is also a common feature and may result in massive hematomas.

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An asymptomatic tooth has deep caries on occlusal surface. Radiograph shows radiopaque mass at apex of the tooth. This mass is most likely to be:

 # An asymptomatic tooth has deep caries on occlusal surface. Radiograph shows radiopaque mass at apex of the tooth. This  mass is most likely to be:

A. Cementoma

B. Condensing osteitis

C. Chronic apical periodontitis

D. Acute apical periodontitis

The correct answer is B. Condensing osteitis.

In condensing osteitis, radiographs demonstrate radiopacity which is not attached to tooth, entire root outline is visible, lamina dura intact and periodontal ligament is widened. These features differentiate it from cementoblastoma, in which the radiopacity is attached to tooth, lamina dura absent and root outline is not visible. In condensing osteitis the tooth may be vital or non-vital.

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