NEET-PG 2022 - Dental PYQs Practice Questions

Q: All are true regarding oral hairy leukoplakia except which of the following?

It is premalignant. ***It is premalignant*** - Oral hairy leukoplakia is associated with **Epstein-Barr virus (EBV)** and is not considered a precancerous condition [1]. - This condition is primarily seen in immunocompromised individuals and does not progress to malignancy [1]. *Hyperkeratosis on HPE* - Histopathological examination typically reveals **keratinized epithelial layers** but is not characterized by prominent hyperkeratosis. - Rather, it shows **ballooning degeneration** of epithelial cells rather than classic hyperkeratotic features [1]. *Associated with EBV infection* - Oral hairy leukoplakia is strongly associated with **EBV**, particularly in immunocompromised patients [1]. - It manifests as white plaques on the lateral borders of the tongue due to **viral replication** of EBV-infected epithelial cells [1]. *Seen in HIV infected patients* - This condition is commonly seen in **HIV-infected individuals**, particularly those with a low CD4 count [1]. - It serves as a clinical marker for **immunosuppression** but is not exclusive to HIV [1]. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Lung, pp. 737-738. [Practice more Dental PYQs on OnCourse]

Q: Uncontrolled diabetes poses a problem to a prosthodontist as

more bone resorption. ***more bone resorption*** - Uncontrolled diabetes *impairs bone metabolism and regeneration*, leading to increased **osteoclastic activity** and reduced osteoblastic function, which results in *greater bone loss*. - This heightened bone resorption makes it difficult to achieve **stable denture retention** and can compromise the success of *dental implants* and other prosthodontic treatments. *increased salivary flow* - Diabetes often causes **xerostomia** (dry mouth) due to *reduced salivary gland function*, not increased salivary flow. - Reduced salivary flow impacts *denture retention, lubrication, and oral hygiene*, making it a further challenge for prosthodontists. *less bone resorption* - This statement is incorrect; uncontrolled diabetes is associated with *increased, not decreased, bone resorption*. - **Hyperglycemia** negatively affects bone health through various mechanisms, including advanced glycation end-products (AGEs) formation and systemic inflammation. *increased tissue laxity* - While diabetes can affect connective tissues, the primary and most significant prosthodontic concern regarding bone is **increased bone resorption**, not necessarily generalized tissue laxity that directly impacts denture stability in the same way. - **Poorly controlled diabetes** can lead to issues like reduced wound healing and increased susceptibility to infection, which are also relevant, but bone resorption is a more direct mechanical issue for prosthodontics. [Practice more Dental PYQs on OnCourse]

Q: The shown radiograph indicates which condition?

Diaphragmatic hernia. **Diaphragmatic hernia** * The radiograph likely shows a **bubbly appearance** in the chest cavity, representing bowel loops displaced through a defect in the diaphragm. * This displacement of abdominal organs into the thoracic cavity is characteristic of a **diaphragmatic hernia**. * *Intestinal obstruction* * Intestinal obstruction typically presents with **dilated bowel loops** and **air-fluid levels** *within the abdominal cavity*, not the chest. * It would not show bowel structures above the diaphragm. * *Pleural effusion* * A pleural effusion would appear as a **homogeneous white (effaced) area** at the base of the lung, obscuring the diaphragm and lung tissue. * It would not have the characteristic bubbly appearance of bowel gas. * *Pneumonia* * Pneumonia appears as **consolidation** or **infiltrates** within the lung parenchyma, which would be an opaque, non-gaseous density. * It does not involve the displacement of abdominal organs into the chest cavity. [Practice more Dental PYQs on OnCourse]

Question 1

All are true regarding oral hairy leukoplakia except which of the following?

Accepted Answer

It is premalignant

Answer

It is a benign condition associated with EBV infection.

Answer

Presents with corrugated white plaques

Answer

Hyperkeratosis on HPE is not typically seen.

Question 2

Uncontrolled diabetes poses a problem to a prosthodontist as

Accepted Answer

more bone resorption

Answer

increased salivary flow

Answer

less bone resorption

Answer

increased tissue laxity

Question 3

The shown radiograph indicates which condition?

Accepted Answer

Diaphragmatic hernia

Answer

Intestinal obstruction

Answer

Pleural effusion

Answer

Pneumonia

NEET-PG 2022 — Dental