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NEET MDS Quiz - Practice Test

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Practice Test

Endodontics - 3 Questions

1
Endodontics
Sonic and ultrasonic instruments have in common
1) Used for flaring coronal portion of root-canal
2) Use copious amounts of irrigating solutions
3) Easy to control while operating
4) All of the above

📝 Explanation:

Both sonic and ultrasonic instruments are used in dental procedures, particularly in endodontics and scaling. They generate vibrations that help in the removal of debris and biofilm. A key feature of these instruments is that they require the use of copious amounts of irrigating solutions to enhance their effectiveness, cool the instrument, and flush out debris. While they may also be used for flaring coronal portions of root canals and can be controlled during operation, the commonality that stands out is the need for irrigating solutions.

2
Endodontics
Elective endodontic treatment is contraindicated
1) Angina patients
2) Recent MI
3) Diabetes
4) Hypertension

📝 Explanation:

Elective endodontic treatment (root canal therapy) is generally safe for patients with stable angina, controlled diabetes, and controlled hypertension.

A recent myocardial infarction (MI, or heart attack) within the last six months is considered a relative contraindication for elective dental procedures due to the increased risk of a recurrent MI or other cardiac events under the stress of treatment.

3
Endodontics
Which of the following fractures of tooth was poorest prognosis
1) Horizontal fractures at gingival level
2) Vertical root fractures
3) Horizontal fractures at apical third of root
4) Horizontal fractures at middle third or root

📝 Explanation:

Vertical root fractures are often associated with a poor prognosis because they can lead to significant loss of tooth structure and are difficult to treat. They typically result in the need for extraction, especially if they extend into the periodontal ligament or if the fracture is not detected early.

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