NEET MDS Shorts
33483
Dental Materials
Dental argon lasers typically operate within the range of 100 to 500 mW, providing sufficient power for soft tissue procedures and some hard tissue interactions.
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Oral Medicine
High triglycerides are a risk factor for atherosclerosis as they contribute to the formation of lipid-rich plaques in the arterial walls.
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RadiologyThe following produces the highest radiation exposure: arthrograms.
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General MicrobiologySalmonella species, excluding Shigella sonnei, which is lactose non-fermenting, will ferment lactose in MacConkey agar, turning the colonies pink due to the formation of acidic end-products
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Oral SurgeryWhen extracting an upper first bicuspid, the buccal root is typically in close proximity to the buccal cortical plate. Due to the thinness of this bone, a fractured root tip is most likely displaced into the adjacent buccal soft tissue. The maxillary sinus is a possibility for upper molars or second bicuspids, but less common for the first bicuspid's buccal root.
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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.
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Oral SurgeryLidocaine is used more commonly in dentistry because it causes lesser incidence of allergic reactions.
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Community DentistryPatient records, including dental X-ray films, are typically the property of the dentist who created them. The dentist is responsible for maintaining, storing, and safeguarding these records according to legal and professional standards. However, patients do have the right to access and obtain copies of their records.
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PedodonticsMobile teeth without secondary traumatic occlusion should never be splinted, but occlusal correction can be done.
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Physiology
The macula densa cells respond to decreases in sodium chloride concentration in the tubular fluid by releasing renin, which initiates the renin-angiotensin-aldosterone system (RAAS). This leads to increased sodium reabsorption and water retention, thereby restoring the sodium chloride balance and blood volume.