Ionization
The harmful effect of X-ray beans in humans that results in a disruption of cellular structure and causes permanent damage to living cells and tissues.
Latent Period
Interval between exposure to ionizing radiation and the appearance of symptoms.
F-Speed Film
Currently the fastest exposure to ionizing radiation.
Digital Image
Electric representation of a radiograph, a film, or an X-ray image.
Radiograph
Image produced on conventional dental film.
Vertical Angulation
Angle measured within the vertical plane at which the central ray of the X-ray beam is projected.
Horizontal Angulation
Position of the tube head and the direction of the central ray in a horizontal or side-by-side plane.
Apex
Tapered end of each root tip.
Periapical
Apex and the surrounding area of the tooth.
Radiolucent
Image on a radiograph that appears in ranges from shades of gray to black.
Radiopaque
Image on a radiograph that appears in ranges from shades of light gray to total white or clear.
Contrast
Differences in the degrees of blackness on a radiograph.
Tube head
Tightly sealed, heavy metal housing that contains the radiograph.
Density
The overall blackness of darkness on a radiograph.
Panoramic
Provides a wide view of the upper and lower jaw.
Cephalometric
Extoral radiograph exposed to show the bones and soft tissue areas of the facial profile.
Collimation
Limiting the diameter of the X-ray beam to protect adjacent areas from exposure to radiation.
Filtration
Use of aluminum filters to remove long (less penetrating) wavelengths from a primary x radiation beam.
Bite-Wing
Shows images of the crowns of the teeth on both arches on one film.
