NEET MDS Shorts
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Conservative DentistryRetention grooves in a class V cavity for non-adhesive restoration are placed in
the mesioaxial and distoaxial line angles. These grooves help hold the
restoration in place by providing mechanical retention and reducing the risk of
microleakage.
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Conservative DentistryDuring cavity preparation, the most common area for exposure is a Class V cavity in the first premolar. A Class V cavity is a five-sided cavity that involves the gingival margin of the tooth and the proximal surface. These cavities are particularly prone to exposure because the gingival tissue in this region can be thin, and the proximity to the bone can lead to inadvertent damage during the preparation process.
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Oral PathologyRadiation injury to the hematopoietic system occurs when whole body exposure ranges between 200-1000 rads.
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Oral MedicineChronic venous insufficiency is characterized by a range of symptoms and physical findings, including varicose veins, pitting edema, and venous ulcers, particularly around the medial malleolus (ankle). These symptoms result from impaired venous return and increased venous pressure in the lower extremities.
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PhysiologyIn the presence of intrinsic factor, vitamin B12 combines in the stomach to prevent its degradation by gastric acid, ensuring its availability for absorption.
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PhysiologyAnswer: 3) Increased glucose uptake and glycogen synthesisExplanation: Insulin stimulates glucose uptake by muscle cells and promotes glycogen synthesis. It does so by increasing the number of glucose transporters on the muscle cell membrane and facilitating the transport of glucose into the cells.
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ProsthodonticsExplanation: Immediate complete dentures often require relining or remaking due
to the significant bone and tissue changes that occur during the initial healing
phase after tooth extraction. The reline helps to adapt the denture to the new
contours of the alveolar ridge, providing a more stable and comfortable fit.
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General MedicineRenin is an enzyme secreted by the juxtaglomerular cells of the kidneys in response to low blood pressure or low sodium concentration.