NEET MDS Shorts
89017
PeriodonticsPigmentation of chemicals in the mucosa is due to local deposition of chemicals in the mucosa.
13418
Microbiology
A classic example of delayed type IV hypersensitivity is the Mantoux tuberculin test in which skin induration indicates exposure to tuberculosis. This reaction is called "delayed hypersensitivity" because it is mediated by sensitized CD4+ T lymphocytes which process antigens in association with class II HLA molecules and release lymphokines. Hypersensitivity reactions with this mode of action include: Granulomatous diseases (mycobacteria, fungi) Tuberculin skin reactions Transplant rejection Contact dermatitis Cytotoxic T lymphocyte (CTL) mediated responses: CD8+ T cells are generated and lyse specific cells. Class I HLA molecules play a role. Reactions with this mode include: Neoplastic cell lysis Transplant rejection Virus-infected cell lysis
The lymphokines promote a reaction (especially mediated through macrophages) beginning in hours but reaching a peak in 2 to 3 days.
20450
ProsthodonticsThe vibrating line is on the junction of hard and soft palate.
29833
PeriodonticsIn periodontal surgery, a periodontal pack is not given in GTR procedures without osseous transplants.
38775
Dental Materials
For a 0.75 mm diameter condenser nib, the recommended force is 8.43 pounds. This force is considered optimal for condensing composite resins effectively without causing damage to the tooth structure.
24350
ProsthodonticsWhich of the following is most likely to occur if attachment epithelium is removed during curettage: deepening of pockets.
55752
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.
94048
PeriodonticsANUG patients will have higher levels of free cortisol in urine.
72876
EndodonticsPulpectomy involves the complete removal of the pulp from the root canals, followed by cleaning, shaping, and filling the canals with a suitable material.
91360
Dental MaterialsWater interferes with chemical adhesion of the polycarboxylate cement to enamel