NEET MDS Shorts
397945
Dental MaterialsThe Sn7. Hg or ? (gamm1) phase is the most corrodible in the low-copper amalgam system.
641407
Oral SurgeryFormalin, specifically 10% neutral buffered formalin, is the standard fixative used for preserving biopsy specimens. It helps to maintain the tissue architecture and cellular details, making it suitable for histopathological examination. Ethanol is not typically used for routine tissue fixation as it can cause tissue shrinkage and distortion. Hydrogen peroxide is not a fixative and is used for different purposes, such as disinfection. A 1% formalin solution is too dilute for effective fixation.
126737
PhysiologyThe vagus nerve, as part of the parasympathetic system, innervates various organs in the thoracic and abdominal cavities, influencing heart rate and gastric motility among other functions.
636610
Dental MaterialsDental amalgam is a mixture of metallic elements consisting of silver, tin, copper, and sometimes zinc, combined with liquid mercury to form an amalgamated alloy. The mercury acts as a matrix that bonds the metal particles together. It does not contain hydrophilic polymers, which are typically found in resin-based composite materials used for tooth-colored restorations.
511175
General MedicinePulmonary fibrosis can result from various causes, including infections (like tuberculosis), infarction, and exposure to harmful substances (like silica in pneumoconiosis).
200329
PhysiologyThe primary visual area is Brodmann area 17, which is located in the occipital lobe's medial side of the calcarine sulcus. It is also commonly referred to as the striate cortex due to the distinctive myelinated strip, the stria of Gennari.
386691
PedodonticsSupernumerary teeth, or extra teeth beyond the normal complement, typically arise from deviations during the initiation stage of dental development. This stage involves the formation of the dental lamina, which is responsible for the development of teeth. Abnormalities in this process can lead to the formation of additional teeth.
773761
PedodonticsTrauma from occlusion in the absence of inflammation causes only reversible changes in the periodontium.