NEET MDS Shorts
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NEETMDSDettol (a trade name) is an antiseptic and disinfectant whose active ingredient is chloroxylenol, which is a type of phenolic compound.
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General MicrobiologyAnthracoid bacilli are generally non-motile and non-capsulated, and they do not grow in long chains.
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Conservative DentistryExplanation: In a conventional Class III amalgam cavity preparation, the axial wall should be straight and parallel to the long axis of the tooth. This design ensures that the restoration has adequate resistance form and is less likely to dislodge under occlusal forces. The wall being deeper incisally than gingivally helps to maintain the integrity of the tooth structure and provides a stable base for the amalgam restoration.
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General MicrobiologyAluminum hydroxide is used as an adjuvant in the hepatitis B vaccine to increase the immunogenicity of the vaccine, enhancing the body's immune response to the antigen.
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INI CET
Garre's osteomyelitis, also known as proliferative periostitis, is a rare type of chronic osteomyelitis. It is typically seen in children and young adults and is characterized by periosteal bone formation (onion-skin appearance) rather than the "moth-eaten" appearance seen in more aggressive or malignant conditions. The most common cause is dental infection.
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RadiologyThe extraoral radiograph that best demonstrates the subcondylar portion of the mandible is Towne's view.
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ProsthodonticsWidened periodontal ligament space is NOT a positive bone factor. It indicates pathology such as orthodontic movement, trauma, or periodontal disease. Positive bone factors include heavy cortical bone layer (provides strength), dense lamina dura (indicates healthy bone), and normal bone height (adequate support). Widened PDL space suggests compromised support.
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PhysiologyThe hypothalamus produces GnRH, which stimulates the anterior pituitary to release follicle-stimulating hormone (FSH) and luteinizing hormone (LH). FSH is essential for the maturation of spermatogonia into primary spermatocytes, while LH acts on Leydig cells to produce testosterone, which is critical for the later stages of spermatogenesis and sperm maturation.
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General MedicineHutchinson's pupil is a clinical sign where one pupil becomes dilated and unresponsive to light due to compression of the third cranial nerve (oculomotor nerve), often caused by an intracranial mass or hemorrhage. The condition is typically unilateral, meaning it affects only one eye.
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Oral PathologyDiastema (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.