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NEET MDS Shorts

17769
Dental Anatomy

Afet tooth eruption in permanent teeth the apex is fully developed after 2-3 years

90054
Pedodontics

In periodontal diseases, alveolar bone loss is the result of both apposition and resorption.

80531
Pedodontics

The major disadvantage of temporary intracoronal splinting is the commitment to a permanent splinting.

10554
Oral Pathology

Acanthosis refers to the hyperplasia or thickening of the stratum spinosum layer of the epidermis or epithelium. It is often seen in conditions such as psoriasis or lichen planus. This is distinct from other phenomena like increased mitotic division or disruption of the basal lamina.

18251
INI CET

The correct sequence is Lag → Log → Stationary → Decline. [Image of the bacterial growth curve]

59319
NEETMDS

A permissive occlusal splint (also called a stabilization splint or Michigan splint) is designed to:

  • Allow the condyles to seat in the centric relation (CR) position.

  • Provide uniform posterior occlusion when the mandible is in CR.

  • Guide mandibular movements with anterior guidance, ensuring posterior disocclusion during lateral and protrusive movements.

This design "permits" the muscles and joints to function without interference, reducing abnormal loading and parafunctional activity.

47406
Oral Surgery

Gate Control Theory (Melzack and Wall, 1965): Pain signals from small fibres (A‑delta and C fibres) travel to the dorsal horn of the spinal cord. These signals can be modulated by input from larger fibres.

A‑delta fibres: Small, thinly myelinated fibres that transmit sharp, pricking pain. They tend to open the gate (facilitate pain transmission).

C fibres: Small, unmyelinated fibres that transmit dull, aching pain. They also open the gate.

Large diameter A‑beta fibres: Myelinated fibres that carry touch, pressure, and vibration sensations. Their activation stimulates inhibitory interneurons in the dorsal horn, which close the gate and reduce pain transmission. This explains why rubbing or massaging an injured area can lessen pain.

B fibres: Preganglionic autonomic fibres, not directly involved in pain gate modulation.

70282
Prosthodontics

The analyzing rod is a straight metal shaft used to evaluate the presence or absence of undercuts on the cast.

72121
Periodontics

This process occurs due to the deposition of minerals, primarily calcium and
phosphate ions, in the presence of organic matrix components and bacteria within the plaque.

Mineralization in dental plaque often starts at the interface between the tooth surface and the plaque, where the organic matrix provides a substrate forthe deposition of mineral ions.

As the process continues, the plaque can become increasingly calcified, with the mineral content moving from the tooth surface outwards towards the surface of the plaque.

This can lead to the formation oftartar or dental calculus, which is a hardened deposit of mineralized plaque that can contribute to dental diseases like gingivitis and periodontitis.

29033
Oral Pathology

Marcus Gunn phenomenon is characteristic of jaw winking syndrome, where there is synkinetic movement between the pterygoid muscles and the levator palpebrae superioris. This causes the eyelid to elevate when the jaw moves (especially with lateral jaw movements). This congenital condition involves aberrant neural connections. Marin-Amat syndrome, Horners syndrome, and Eagles syndrome do not involve this jaw-eyelid synkinesis.

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