NEET MDS Shorts
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Oral PathologyMyofascial pain dysfunction syndrome (MPDS) is a psycho-physiologic disorder where psychological stress and emotional factors play a significant role in its development and perpetuation. Stress leads to muscle tension, bruxism, and clenching, creating a cycle of pain and dysfunction. Marie-Strumpell disease (ankylosing spondylitis) is an autoimmune disorder, while Marfans syndrome and Treacher Collins syndrome are genetic connective tissue and craniofacial disorders respectively.
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ProsthodonticsMutually protective occlusion should not be employed in Class II malocclusion (due to posterior interferences), posterior crossbite (due to altered guidance), and Class III malocclusion (due to anterior interference patterns). These conditions prevent proper canine guidance and group function, making mutually protective occlusion inappropriate and potentially harmful to the prosthesis and supporting structures.
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Oral PathologyThe primary cells that characterize eosinophilic granuloma are histiocytes.
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INI CET
Awake fibreoptic intubation is preferred for skull base fractures to avoid accidental intracranial placement of the tube (a risk with blind nasal intubation) and to manage potential cervical spine injuries.
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EndodonticsThis statement is untrue - carbopol is not typically used in home bleaching systems. Home bleaching uses 10-15% carbamide peroxide in a gel form with custom vacuum-formed trays.
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General PathologyThe symptoms described, including low serum calcium and high serum phosphate, are indicative of primary hypoparathyroidism, which can occur after the removal of parathyroid glands.
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NEETMDSSurgical repair for unilateral cleft lip and palate (UCLP) is typically a staged process. Lip repair is often done early, around 3-6 months of age. Soft palate repair may occur around 6 months or slightly later. Hard palate repair is often deferred until later, sometimes around 12-18 months, to allow for better facial growth and development. The stated answer aligns with a common phased approach to these repairs.
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Dental Materials
Knoop hardness test - Diamond of rhombic shape (The long axis of indentotion is measured) The Knoop hardness test is used to obtain the values for both exceedingly hard and soft materials. The
Vickers (Diamond pyramid test) - Diamond of square base shape (The diagonal length of the indentation is measured)
Rockwell - Diamond of conical shape (The penetration depth is measured)
Brinells - Steel ball (The diameter of indentation is measured)
hardness value is independent of the ductility of the material.
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NEETMDSA crib (often used in orthodontics for habit breaking, like thumb sucking) functions by making the habit unpleasant, acting as a reminder, and distributing pressure to posterior teeth. It does not establish a suction force on the anterior segment; its design actively prevents the formation of a comfortable suction seal.
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EndodonticsRC-prep is a combination of EDTA with urea peroxide. This chelating and lubricating agent: 1) Contains 15% EDTA for chelation of calcium ions in dentin, 2) Contains 10% urea peroxide for effervescent action and debris removal, 3) Helps soften dentin and remove smear layer, 4) Provides lubrication during instrumentation, 5) Has antimicrobial properties. The combination provides both chemical (EDTA) and physical (effervescence) cleaning action, making instrumentation more efficient and effective in removing both organic and inorganic debris from root canals.