FAST REVISION
Public Health Dentistry
1. Rate: A rate is a measure that expresses the change in one variable with respect to another variable, often over a specific period of time. It is typically used to express quantities like speed, velocity, heart rate, or the occurrence of
Radiology
Overfixing occurs when the radiographic film remains in the fixing solution for an extended period, leading to excessive clearing of the image. Fixing agents, such as sodium thiosulfate, dissolve unexposed silver halide crystals. Prolonged exposure
Radiology
Crimp marks in a radiograph are due to sharp bending of the film.
Crimp marks are artifacts that appear as linear or curvilinear indentations on a
radiograph. They are typically caused by the film being sharply bent or folded
durin
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