NEET MDS Shorts
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NEETMDS
Supracrestal fibrotomy (also known as circumferential supracrestal fibrotomy or CSF) is a surgical procedure performed to sever the supracrestal fibers around a tooth, which helps prevent relapse of corrected rotations, especially in the maxillary canine region, as these fibers are primarily responsible for the rotational memory of the tooth and subsequent relapse.
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EndodonticsIn the walking bleach procedure, sodium perborate is the primary technique used. The walking bleach method involves: 1) Mixing sodium perborate with water or 3% hydrogen peroxide to form a paste, 2) Placing this mixture in the pulp chamber of endodontically treated teeth, 3) Sealing the access cavity with temporary restoration, 4) Patient returns after 3-7 days for evaluation and possible reapplication. Sodium perborate releases oxygen slowly, providing sustained bleaching action. HCl is used in microabrasion, not walking bleach.
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INI CET
Kobayashi hooks are auxiliary ligature wires with a spot-welded hook used to attach elastics to brackets that do not have integral hooks.
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Orthodontics
Reverse labial bow is so called as activation of the bow is done by opening the U-loop, instead of compressing as is seen in the conventional labial bows.
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PeriodonticsRoot conditioning with citric acid helps in the removal of endotoxin and smear layer.
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ProsthodonticsBefore construction of the complete denture, the patient's natural dentition is evaluated because it helps in all of the above: establishing vertical dimension, arranging the teeth in balanced occlusion, selection of form, shape, and size of the artificial teeth.
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Pharmacology
Withdrawal of morphine is associated with marked drug-seeking behavior.
Physical manifestations of abstinence are - lacrimation, sweating, yawning, anxiety, fear, restlessness, gooseflesh, mydriasis, tremor, insomnia, abdominal colic, diarrhea, dehydration, rise in BP, palpitation and rapid weight loss.
Delirium and convulsions are not a characteristic feature (contrast barbiturates) and are seen only occasionally.
Cardi-ovascular collapse and fatality are rare if supportive measures are instituted.
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Oral Surgery
The coronoid process can become impinged due to
displacement of the zygomatic arch, restricting the movement of the mandible and
causing trismus (difficulty in mouth opening).
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ProsthodonticsThe Ney surveyor is widely recognized for its simplicity and durability, making it a popular choice among dental professionals.
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Orthodontics
Solution This is because elastic supracrestal fibres remodel extremely slowly and can still exert forces capable of displacing a tooth even at 1 year after removal of an orthodontic appliance.