NEET MDS Shorts
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General MedicineAngina pectoris can cause a medical emergency in the dental office with substernal pain, facial pallor, and cold perspiration. The stress of dental procedures can precipitate anginal attacks in susceptible patients. Other conditions listed typically present differently.
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General MicrobiologyEndotoxins are components of the outer membrane of Gram-negative bacteria and are released when the bacteria die or divide. This structural characteristic differentiates them from exotoxins, which are secreted by living bacteria.
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FPD and RPDThe flexibility of a retentive clasp arm is affected by the length of the retentive arm.
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Oral PathologyVitamin D deficiency causes widening of predentin due to defective calcification.
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BiochemistryA component of the coenzyme required in a transamination process is Pyridoxine
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Oral PathologyCentral giant cell granuloma characteristically presents as a single lesion in a single bone, typically the mandible or maxilla. In contrast, osteopetrosis affects multiple bones (generalized marble bone disease), Pagets disease commonly affects multiple bones (though it can be monostotic), and polyostotic fibrous dysplasia by definition affects multiple bones. CGCG is a localized reactive lesion.
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Oral SurgeryThe mental foramen is found on the buccal aspect of the mandible, typically between the first and second premolars or the second premolar and the first molar. The opening of the mental foramen is directed backward and lateral, allowing the mental nerve to exit and innervate the lower lip and chin.
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General Medicine
Movement disorders, particularly those associated with basal ganglia dysfunction such as dystonia and chorea, are the most common neurological manifestations of Wilson’s disease due to the primary toxic effect on the basal ganglia from copper deposition.
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Oral Medicine
The primary cellular defect caused by HIV infection is the depletion of CD4+ T-helper cells, which are essential for a properly functioning immune system. This leads to a compromised immune system that is susceptible to opportunistic infections.
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Physiology
Theophylline is a methylxanthine derivative that acts as a phosphodiesterase inhibitor, leading to increased intracellular cyclic AMP (cAMP) levels. This can stimulate various cellular processes, including smooth muscle relaxation and bronchodilation in the respiratory system. It also enhances insulin secretion.