NEET MDS Shorts
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NEETMDSThe normal distance from the cementoenamel junction (CEJ) to the alveolar bone crest is typically considered to be 0.5 to 1.6 mm. Radiographically, this difference is represented by the options provided, with 0-1.6 mm being the standard accepted range for healthy bone level.
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Oral Medicine
In muscular dystrophy, there is ongoing muscle fiber destruction and regeneration, which leads to the release of muscle enzymes into the bloodstream. CK-3 is the muscle-specific isoenzyme that is most commonly elevated in muscular dystrophies, indicating damage to skeletal muscles.
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AnatomyThe cricothyroid artery is a branch of the superior thyroid artery
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Physiology
Sympathetic stimulation leads to the constriction of the afferent arterioles, decreasing RBF and GFR. This is part of the body's response to maintain blood pressure and blood volume during stress or hemorrhage.
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Biochemistry
Uric acid is a purine derivative, increased by purine salvage reactions that convert purines, purine ribonucleosides, and purine deoxyribonucleoside to mononucleotides (incorrect answer 4). A defect in hypoxanthine-guanine phosphoribosyl transferase, one of the enzymes of purine salvage, is responsible for purine overproduction and subsequent hyperuricemia observed in Lesch-Nyhan syndrome.
Such salvage reactions require much less energy than de novo synthesis (incorrect answers 1, 2). The liver is the major site of purine nucleotide biosynthesis and provides excess purines for other tissues that cannot synthesize purines.
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NEETMDSThe standard procedure for an immediate complete denture involves extracting the posterior teeth first to allow the posterior ridge to heal while the denture is being fabricated. The anterior teeth are maintained until the day of insertion of the denture to preserve esthetics and the patient's social life. On the day of insertion, the anterior teeth are extracted, and the denture is inserted immediately.
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EndodonticsObtura II is a high heat obturation technique used in endodontics (root canal treatment) to fill and seal the root canal system of teeth. This technique involves the use of a thermoplasticized gutta-percha, which is heated to a high temperature and then compacted into the root canal with a heat source such as a heated plugger or a heated tip of a handpiece. The heat helps to soften the gutta-percha, allowing it to adapt to the irregularities of the root canal system and form a tight seal against bacterial microleakage. Thermofill and Ultrafill are not high heat techniques, while sectional filling is a method of filling the canal in increments, which may or may not involve heat.
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Oral SurgeryPerform Caldwell-Luc to remove the tip: The Caldwell-Luc procedure (or a modified, less invasive version) has long been considered the standard surgical method for retrieving a displaced root or foreign body from the maxillary sinus, especially when it is mobile within the sinus cavity or the condition has become chronic. It involves creating a small bone window in the anterior wall of the maxillary sinus to access and remove the fragment.
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MedicineInsulinomas are neuroendocrine tumors of the pancreas. They can occur throughout the pancreas with equal frequency in the head, body, and tail.
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General Medicine
The patient's symptoms are indicative of thiamine deficiency, which is a common nutritional deficiency in chronic alcoholics.