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NEET MDS Quiz - Practice Test
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periodontics - 3 Questions

1
Periodontics
Sodium lauryl sulphate used in the toothpaste is
1) Humectant
2) Abrasive
3) Flavouring agent
4) Surfactant

📝 Explanation:

Sodium lauryl sulphate (SLS) is an anionic surfactant (detergent) commonly added to toothpastes to enhance their cleansing ability.

Its main functions are:

  • Produces foam (lather) during brushing.
  • Reduces the surface tension of saliva and water.
  • Helps loosen and suspend food debris, plaque, and microorganisms, making them easier to remove.
  • Improves the distribution of toothpaste throughout the oral cavity.

SLS has no abrasive action and does not prevent drying of toothpaste.

2
Periodontics
Slight gingival recession on normally placed canine is noted due to inflammation. After through scaling and root planing it is free of inflammation. Treatment of choice
1) Laterally positioned graft
2) Free gingival graft
3) Coronally displaced graft
4) Maintenance and recall visits

📝 Explanation:

1) Laterally positioned graft: This technique is used when there is a loss of interdental papilla, which may occur due to periodontal disease or trauma.
2) Free gingival graft: This involves the transfer of a piece of tissue from the palate to the affected area to cover the exposed root surface and increase the zone of attached gingival tissue.
3) Coronally displaced graft: This technique involves moving the existing gingival tissue coronally over the exposed root to cover it.
4) Maintenance and recall visits: After the resolution of inflammation through scaling and root planing, if the recession is minimal and the tooth is not at risk of further damage, regular maintenance and recall visits may be sufficient to monitor the area.

Since the question mentions that the tooth is normally placed and the issue is resolved after scaling and root planing, the correct answer is 4) Maintenance and recall visits to ensure the area remains healthy and monitor for any recurrence of recession.

3
Periodontics
Gingival enlargement is a side effect of
1) Phenytoin
2) Calcium channel blockers
3) Acute myelocytic leukaemia
4) All of the above

📝 Explanation:

Phenytoin is a common cause of drug-induced gingival enlargement, affecting a significant percentage of patients who use it.
Calcium channel blockers, such as nifedipine and amlodipine, are also known to induce gingival overgrowth.
Acute myelocytic leukaemia (AML) is a systemic condition that can manifest orally with symptoms like gingival infiltration and enlargement.

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