Final 21 22 23 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Term | Definition |
Wilhelm Conrad Roentgen | He discovered the first X-RAY in 1895 |
Primary Radiation | Central beam that comes from the X-Ray tubehead |
Secondary Radiation | When the primary X-Rays hit the patient or contact matter |
Scatter Radiation | Deflected from its path as it strikes matter. most dangerous to operators, so 6 ft of clearance is necessary |
Leakage Radiation | leaks in all directions from the tubehead |
M.P.D (maximum permissible dose) | maximum amounts of radiation that wouldn't be expected to produce any significant effects in a lifetime. Amount is 0.05 SV (5.0 REMs) |
Dosimeter Badge | Must be worn at all times in the dental office. used t monitors an individuals radiation exposure in the office |
Kilovoltage | the quality or penetrating power of the central beam. the higher the KV the higher the power |
miliamperage | the amount or quality of electrons |
Control Panel | the circuit board and controls that allow the operator to adjust the correct setting for each patient |
Collimeter | a lead disk with an opening in the middle that reconstructs the beam and filters out additional weak rays |
Density | the degree of darkness on an X-ray |
Contrast | The difference between the shades of gray |
Least Sensitive | kidney, muscle, nerves |
Less Sensitive | mature bone, salivary glands and liver |
Moderately Sensitive | Skin, intestinal tract, oral mucosa |
Most Sensitive | lymphnoid, reproductive cells, bone marrow, intestinal epithelium, thyroid |
Sensitive | connective tissue and growing bone |
Film Sensitivity | stray radiation, high temperature, chemicals |
Cone Cutting | X-Ray beam missed part of the film |
Elongation | vertical angulation error caused by to little angulation |
Foreshortening | vertical angulation error caused by to much angulation |
Overlapping | angled toward the mesial or distal surfaces |
Dark Film | over developing, developing solution to high/low, solution is to strong or when the film is left in the developer to long |
Fogged Film | gray image, image detail is lost contrast is lessened |
Partial Image | film placement in the processing tanks when the solution levels are low |
Film Artifacts | images found on the X-ray that are not part of the normal anatomy or pathology |
Clear Film | there is no image on the film caused by no exposure |
Double Exposure | indistinct images or dark X-ray. can be avoided by keeping the film sperated |
Blurred Image | movement from the patients head, the tubehead or the X-ray film moving around in the patients mouth |
Light Film | under processed. can occur while exposing film and during processing |
Brown Stain | improper/ insufficient washing or rinsing of the film during the processing sequence |
streaks On Film | unclean rollers or X-ray racks |
Automatic Processor Temperature | Between 82*-95* degrees F |
Periapical Views | pictures the entire tooth and surrounding areas. used to assess the health of the tooth, bone and tissues |
Cephalometric | used to assess the patients skeletal structure and profile |
Shades Of Gray | a computer can display over 200 different shades but the human eye can only detect 32 |
Gray Scale | important for determining the condition or the teeth, tissues and surrounding bone |
Focal Trough | also known as an "image layer" or "sharpness" is a 3D curved zone in which dental arches are positioned to achieve the sharpest image |
Crystals | the larger the crystals the faster the film |
Bite-Wing Radiographs | pictures the crown, interproximal space and the crest area of the alveolar bone on the maxilla/mandible teeth |
Occlusal Radiographs | shows large areas of the dental arch placed on the occlusal surface./ used to locate fractures, impacted teeth, foreign bodies and identifying the ocation of other artificats |
Tomography | the imaging of one layer or section of the body while blurring images from other areas. the principle of panoramic radiographs |
Panoramic Radiographs | show the entire maxilla and mandible on one film |
Intensifying Screens | what the cassettes for panoramic radiographs are lined with. phosphor is used on the screens which emits light when struck y X-rays green are rare earth and blue are calcium tungstate |
Extraoral Radiograph | used by dentist to identify large areas of the skull on one film |
Digital Advantages | less radiation to patient, appears on the monitor immediately, patient can view while doctor explains, less space for storage, darkroom, processing equipment, and solution eliminated and easily coppied |
Digital Disadvantages | the cost, extra time in training, uncomfortable for patient, updates and viruses plus infection control |
3D Shows | complete/ partial skull fields of view. used to produce digital panoramic and cephalometric images, 3D photos and CBVT & CBVI |
Created by:
red112409
Popular Dentistry sets