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Dental X-Rays
| Term | Definition |
|---|---|
| Unexposed film appearance | clear film with a blush tinge |
| Film exposed to white Light Appearance | Film appears black |
| Over exposed film appearance | Film appears black |
| Under exposed film | film appears light |
| Premolar bite-wing must include | Distal 1/2 canine, all premolars present, and 1st molars on the MX and MD teeth and crestal bone. |
| Incorrect Horizontal angulation Appearance | Overlapped contact areas appear on the film |
| Cone-Cute Appearance | a clear, unexposed area on the film |
| Film Bending Appearance | Film appears stretched and disorted (all or portion of the film) |
| Film creasing appearance | A thin radiolucent (dark) line appears on the film (usually straight) |
| Phalamgioma Apparance | Patient's finger appears on the film image |
| Double exposed appearance | Two (double) images are superimposed on top of each other. |
| Patient movement appearance | film image is distorted or blurred |
| incorrect vertical angulation appearance | short teeth with blunted roots appear on the film (foreshortened) |
| dropped film corner appearance | the occlusal pñane appears tipped or tilted |
| Incorrect film placement appearance | no apices on the film |
| Molar bite-wing must include | Distal 1/2 of second premolar, all molars present, and both MX and MD molars, and crestal bone. |
| Reversed film appearance | Light image with a herringbone pattern appear on the film |
| X-ray machine purpose | (2) 1 produce quality radio graphs, 2 detection of disease and lesions for diagnostic purposes |
| Federal regulations 1968 | Radiation control for health and safety act, standardize performance of x ray equipment |
| Federal Regulations 1974 | US FDA standardized all manufacturing of radiographic dental equipment )all machines must meet this) |
| State Gov't Regulations determine when and how dental xray equipment is monitored | MN mandatory every to years |
| tubehead or tube housing used to | produce x ray |
| Extension arm used to | suspend tubehead, house electrical wires, and allows movement in all directions and positioning of the xray tubehead. |
| Control panel used to | (3) allows for regulation x ray beam, control electrical current for generation of x rays and house control buttons and settings |
| KvP | 65-100 KvP range peak of energy |
| mA | 7-15 range amount |
| Exposure time | 1/60th of a second - standard and 1/100th of a second - digital |
| collimator | lead diagraph used to restrict the size of the x ray beam (round, rectangle, cone) |
| X ray film holders | stabe (styrofoam bite block, simplest), XCP, Bite Tab, EEZE grip, etc. |
| Beam Alignment Device | used to help the radiographer position PID in relationship to the tooth and film |
| X-ray | Beam of energy |
| Image | Picture or likeness of an object |
| Receptor | something that responds to a stimulus (film-sensor-(PSP) Phospore Storage Plates) |
| Film Composition | film base, adhesive layer, film emulsion, protective layer |
| Film Emulsion Purpose and Mixture | to give film greater sensitivity to x-radiation, homogeneous mixture of gelatin and silver halide crystals |
| Latent Image | Stored image not visible on the film |
| Purpose of lead foil sheet | To prevent film fogging from scatter graduation |
| Periapical | Examines the entire tooth and surrounding structures |
| Bitewing | examines the interproximal surfaces of the crowns of both mx and md teeth with crestal bone |
| Occlusal | Examines large area of Mx or MD jaw |
| Types of intra-oral Radiographic Examination | Periapical, interproximal, and occlusal |
| Periapical (Purpose, film type, and technique) | Used to examine the entire tooth and supporting bone, periapical film, paralleling and bisecting technique |
| Interproximal (Purpose, film type and technique) | examine the crown of both the mx and md teeth on a single film and adjacent surfaces of teeth and crestal bone, bite-wing film, bite wing technique. |
| Occlusal (Purpose, film type and technique) | Examine large areas of the mx or md on a single film, occlusal film, occlusal technique. |
Created by:
msosa942