NEET MDS Quiz - Practice Test

1

Endodontics

A patient has been treated endodontically for a radiolucent lesion at apex. After 1 year, size of lesion increased. Most possible reason is
1) Leakage due to improper obturation
2) Persistent cystic lining
3) Failure to do apical curetage
4) All of the above

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Leakage due to improper obturation: Inadequate sealing of the root canal system allows bacteria and irritants to leak from the oral cavity back into the periapical tissues, causing the lesion to persist or enlarge.

Persistent cystic lining: A true cyst has a distinct epithelial lining that is not resolved by conventional non-surgical root canal therapy alone. If the cyst lining remains, the lesion may continue to grow.

Failure to do apical curettage: While not always necessary for non-surgical cases, in some instances where the lesion is large or persistent, surgical intervention including apical curettage (removal of the inflamed or infected periapical tissue) may be required to facilitate healing.

2

Endodontics

The radiopacity of gutta-percha cones is mainly due to the presence of:

1) Calcium hydroxide
2) Zinc oxide
3) barium sulfate
4) Eugenol

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Radiopacifiers such as barium sulfate or bismuth compounds allow gutta-percha to be visualized on radiographs.

3

Endodontics

Endodontic therapy in a single rooted teeth is contraindicated in
1) PA abscess
2) Horizontal root fracture
3) Vertical root fracture
4) Chronic abscess & sinus

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Endodontic therapy (root canal treatment) is generally effective for conditions like a periapical (PA) abscess, horizontal root fractures (depending on location), and chronic abscesses, provided the tooth is restorable.

�However, a vertical root fracture often has a poor prognosis because the fracture line provides a pathway for bacterial contamination along the entire length of the root, leading to irreversible periodontal destruction that cannot be effectively sealed or treated through conventional endodontics.

📚 Menu

📚 Select Subject

📚 Subjects

Practice Test

📝 Explanation:

📝 Explanation:

📝 Explanation:

📚 Menu

📚 Select Subject

📚 Subjects

Practice Test

📝 Explanation:

📝 Explanation:

📝 Explanation:

🎉 Quiz Completed!