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NEET MDS Shorts

24614
Pharmacology

endorphins are endogenous molecules having morphine like properties

94139
Oral Pathology

Diastema (spacing between teeth) is never directly associated with TMJ pathosis. TMJ disorders commonly cause open bite due to condylar resorption or growth disturbances, closed bite due to posterior teeth super-eruption, and traumatic occlusion due to altered mandibular positioning. Diastema is typically related to tooth size-arch length discrepancies, developmental factors, or periodontal disease, not TMJ dysfunction.

21333
Pedodontics

Severe and acute periodontal disease in AIDS patients is due to reduced number of T cells.

86703
Oral Surgery

  • Chromic catgut sutures are natural absorbable sutures made from purified collagen of animal intestine, treated with chromium salts.

  • The chromic treatment delays absorption compared to plain catgut, making them last longer in tissues.

  • Absorption time:

    • Plain catgut: ~7 days

    • Chromic catgut: ~18–21 days

    • Catgut treated for extended absorption: may last up to 90 days in some cases

  • 22095
    Periodontics

    The early effects of primary trauma from occlusion can include hemorrhage and thrombosis in the periodontal ligament, leading to inflammation and potential tissue damage.

    97855
    Dental Materials

    Zinc polycarboxylate cement is favored as a luting agent for its chemical bonding capability with tooth structure.

    22295
    State PSC PYQ

    Splinting mobile teeth helps to stabilize them by distributing the forces of chewing (occlusal forces) across a wider area, which reduces trauma to individual teeth and supporting structures. This stabilization is considered the primary objective in periodontal therapy. While it may indirectly help prevent further bone loss or improve comfort, the direct mechanical goal is force distribution.

    52179
    Oral and Maxillofacial Surgery

    Mesioangular impactions are the most common and typically involve the tooth being angulated towards the mesial surface of the adjacent second molar. This orientation allows for a more straightforward surgical approach compared to other impaction types.

    40347
    Dental Materials

    The compressive strength of hardened zinc oxide eugenol (ZnOE) impression paste is generally about 7 MPa, indicating its ability to withstand compressive forces without deformation or failure.

    75515
    Physiology

    Answer: 4) Increase in heart rate and increase in stroke volume
    Explanation: Thyroid hormones, such as thyroxine (T4) and triiodothyronine (T3), enhance the effects of catecholamines on the cardiovascular system, leading to increased heart rate and stroke volume. This results in a higher cardiac output, which is essential for meeting the increased metabolic demands during stress or exercise.

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