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NEETMDS- Oral Pathology mcq
MDS PREP

Which of the following diseases of the skin is the most likely to exhibit fluid blisters on the skin and/or oral mucosa?
1) Pemphigus
2) Lichen planus
3) Keratosis follicularis
4) Erythema multiforme
Oral Pathology Answer: 1

Pemphigus is an autoimmune blistering disease characterized by the formation of bullae (fluid-filled blisters) on the skin and mucous membranes, including the oral mucosa. This condition occurs when the body's immune system mistakenly attacks the proteins that bind the layers of the skin together, leading to separation and blistering. The blisters are usually large and painful, and they can rupture easily, leaving raw, exposed areas of skin or mucous membrane.

Lichen planus, keratosis follicularis, and erythema multiforme are other skin conditions but do not typically present with fluid blisters as the main feature.

Lemina dura is lost or partially lost in 
 1. Hypothyroidism
 2. Hyperthyroidism
 3. Hypoparathyroidism
 4. Hyperparathyroidism
Oral Pathology Answer: 4

Lamina dura is lost or partially lost in hyperparathyroidism.

Lession of facial nerve at level of stylomastoid foramen leads to 
1. Loss of taste sensation from anterior 2/3 of tongue
2. Paralysis of orbicularis oculi muscle
3. Losss of innervation to stapedius
4. Loss of lacrimal secretion

Oral Pathology Answer: 2

Lesion of the facial nerve at the stylomastoid foramen leads to paralysis of the orbicularis oculi muscle.

Letterer-Siwe disease is a disturbance of  
 1. Protein metabolism
 2. Lipid metabolism
 3. Mucopolysaccharide metabolism
 4. Carbohydrate metabolism
Oral Pathology Answer: 2

Letterer-Siwe disease is a disturbance of lipid metabolism.


Dens in dente is thought to arise as a result of

1. a normal tooth but enclaved within an other tooth, during formation

2. proliferation and evagination of an area of the inner enamel epithelium

3. extensive growth of mesenchymal cells of pulp tissue

4. an invagination of the enamel organ during tooth formation



Oral Pathology Answer: 4

Dens in dente is a rare developmental dental anomaly that is characterized by a tooth with an invaginated or cavity-like structure that appears like a "tooth within a tooth." It arises from an error during the morphodifferentiation stage of tooth development.

The skin of a patient undergoing radiotherapy will show after 2 weeks 
 1. Erythema
 2. Depigmentation
 3. Radiation-induced carcinomas
 4. No change
Oral Pathology Answer: 1

The skin of a patient undergoing radiotherapy will show erythema after 2 weeks.

Which of the following tooth structure during formation is most affected due to Vit A deficiency 
 1. Enamel
 2. Dentin
 3. Cementum
 4. Periodontal ligament
Oral Pathology Answer: 1

Enamel is most affected during formation due to Vitamin A deficiency.


Metastatic disease to the oral region is most likely to occur in which of the following locations?
1) Tongue
2) Posterior maxilla
3) Posterior mandible
4) Floor of the mouth
Oral Pathology Answer: 3

Metastatic disease in the oral cavity typically occurs in the posterior mandible. This is because the bone in this area is relatively porous and has a rich blood supply, making it more susceptible to the spread of cancer cells from distant sites in the body.

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