NEET MDS Shorts
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PhysiologyVitamin E is an important antioxidant that protects unsaturated fats in cell membranes from oxidation. Without vitamin E, these fats can become oxidized, leading to decreased fluidity and altered function of membranes.
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Dental MaterialsThe gelation temperature is the point at which the material transforms from a sol to a gel, which is critical for impression making.
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Conservative DentistryThe upper limit of urinary mercury attributed to extensive amalgam restoration is typically considered to be 4 micrograms/g of creatinine. While the actual limit can vary based on the individual and the extent of amalgam fillings, a level of 4 micrograms/g of creatinine is commonly used as a benchmark for evaluating potential health concerns related to mercury exposure from dental amalgam.
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Periodontics
Secondary occlusal trauma primarily relates to occlusal discrepancies or effects
on tooth mobility due to periodontal attachment loss rather than localized
gingival inflammation alone.
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Dental MaterialsThe pH of resin cements is usually slightly acidic after mixing, subject to variation in formulation.
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PedodonticsThe word "trauma" from occlusion refers to tissue changes in the periodontium from abnormal occlusal forces.
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RadiologyIn reverse Townes projection, the central X-ray passes through the occipital bone.
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PhysiologyGastric acid secretion is inhibited by acidification of the stomach and duodenum. Low pH (acidity) in the stomach inhibits gastrin release from G cells, while high pH in the duodenum also contributes to the negative feedback mechanism that reduces acid secretion.