NEET MDS Shorts
16822
INI CET
The placenta is formed by fetal chorion frondosum and maternal decidua basalis.
[Image of the placenta structure]
80522
ProsthodonticsThe purpose of boxing an impression is both to serve as a base for cast poured and to boxing pressure the border width after border molding.
30157
EndodonticsFor a child with mid-crown fracture in permanent maxillary central incisor with necrotic pulp and incompletely formed root with open apex, the treatment of choice is apexification. This procedure is indicated because: 1) Open apex prevents conventional root canal obturation, 2) Necrotic pulp requires complete debridement, 3) Apexification induces calcified barrier formation at root apex, 4) Allows subsequent root canal obturation, 5) Preserves the tooth for normal function. Calcium hydroxide or MTA are commonly used materials for apexification. Pulpotomies are not indicated for necrotic pulps.
55525
RadiologyLoss of lamina dura and ground glass appearance indicates fibrous dysplasia.
88049
PhysiologyAntidiuretic hormone (ADH) increases water reabsorption in the nephron, particularly in the collecting ducts, by making them more permeable to water.
20637
EndodonticsThe primary cause of weakening in an endodontically treated tooth is the loss of sound tooth structure during the access cavity preparation and subsequent canal instrumentation. The extent of this preparation, particularly the removal of marginal ridges and cusps, significantly compromises the tooth's structural integrity.
96416
NEETMDS
Laminin is the most abundant and important glycoprotein in all basement membranes. It has distinct binding domains that interact with multiple components of the extracellular matrix (ECM), such as collagen type IV, and with cell-surface receptors like integrins, which helps anchor cells to the basement membrane.
55866
EndodonticsThe ideal dowel length should be 2/3 the length of the root to provide adequate retention while maintaining at least 4-5mm of apical seal. This provides optimal mechanical retention without compromising the apical seal.
57174
PedodonticsPeriodontal pockets that offer the least possibility for bone regeneration are classified as two-wall infrabony pockets.
87176
Conservative DentistryTo diagnose class III caries clinically, which is caries that involves the proximal surfaces of teeth, a good supplement to radiographs is to examine the proximal surfaces for any color changes, particularly at the contact points where two teeth touch. This is often done using a combination of visual inspection and the use of a dental explorer to detect cavities and softened enamel. However, the answer provided, "Caries activity tests," refers to methods used to assess the activity or inactivity of a caries lesion, not necessarily for diagnosis.