NEET MDS Shorts
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RadiologyTo localize a supernumerary or an impacted tooth and determine its exact relationship to the other teeth, the most effective radiographs would be two or more periapical views at different angles and an occlusal view.
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State PSC PYQNecrosis causes gingival recession, so attachment loss occurs without pocket formation.
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RadiologyExplanation: This statement is false because if the developing time is too long, it typically results in an overexposed radiograph, which appears too dark. However, if the developing time is too short, it can lead to an underexposed radiograph, which appears too light.
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General MicrobiologyCopro antibodies are antibodies found in feces These are typically IgA antibodies that are produced in response to infections in the gastrointestinal tract, including typhoid fever. They can be detected in stool samples and are used in diagnostic tests.
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Oral SurgeryPatients who are allergic to PABA (para-aminobenzoic acid) are likely to be allergic to tetracaine. This is because PABA is a common metabolite of amide-type local anesthetics, and tetracaine is also an amide anesthetic. Lignocaine and prilocaine are both ester-type anesthetics, which have different chemical structures and metabolic pathways, making an allergic reaction less likely in a patient with a PABA allergy. Carbocaine is a derivative of mepivacaine, which is also an amide, but the specificity of the allergy may not necessarily cross-react with all amide anesthetics.
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RadiologyThe region closest to satisfying all the principles of shadow casting and parallel placement of the film in a paralleling technique full mouth series of periapical radiographs is mandibular molar view.
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General PathologyHypertension is a key factor in diagnosing preeclampsia in a pregnant woman with ankle edema and proteinuria.
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ProsthodonticsIn a bilateral distal extension RPD, abutment teeth are crucial for the stability and support of the prosthesis. However, it is not ideal to have retention buccally on one side and lingually on the other side as this can lead to tipping and rotation of the denture during function, compromising its stability. Instead, both buccal and lingual retention is preferred for a more balanced and predictable outcome.
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Dental Materials
Zinc polycarboxylate cement primarily consists of zinc oxide and polyacrylic acid.
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EndodonticsObturation of root canal should achieve all the mentioned objectives: 1) Tug-back - indicates proper fit and resistance form of the master cone, 2) Hermetic seal - prevents microleakage and bacterial penetration, 3) Fluid-free seal - eliminates pathways for tissue fluids that can support bacterial growth, 4) Additionally should provide: complete filling of canal system, biocompatibility, and dimensional stability. These objectives work together to ensure long-term success by eliminating bacterial contamination and preventing reinfection of the periapical tissues.