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Dental X-ray Equipment

Dental X-ray Equipment. DHYG 116 Oral Radiology I. Objectives. Define key terms Discuss regulation of x-ray equipment Recognize x-ray machines used for intra- and extraoral radiography Describe purpose and use of dental x-ray film holders and devices. Dental X-ray Equipment.

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Dental X-ray Equipment

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  1. Dental X-ray Equipment DHYG 116 Oral Radiology I

  2. Objectives • Define key terms • Discuss regulation of x-ray equipment • Recognize x-ray machines used for intra- and extraoral radiography • Describe purpose and use of dental x-ray film holders and devices

  3. Dental X-ray Equipment • Chapter 6 reading: Haring (pgs. 66-73) • Questions • What are the component parts of a dental x-ray machine? • What types of x-ray film holders are available and how are they used? • What are beam alignment devices and how are they used?

  4. Dental X-ray Equipment • Dental X-ray Machines • Dental X-ray Film Holders and Beam Alignment Devices

  5. Dental X-ray Machines • Haring (pp. 67-69) • Performance standards • Types of machines • Component parts http://arcweb.sos.state.or.us/rules/OARs_300/OAR_333/333_100.html

  6. Performance Standards • Before 1974, there were no federal standards for the manufacture of dental x-ray machines • After 1974, the federal government regulates the manufacture and installation of dental x-ray equipment • State and local governments dictate how it is used OR-OSHA is responsible for worker safety Radiation Protection Services Office of Environmental Public Health 900 NE Oregon Street, Suite 640 Portland, OR 97232

  7. Types of Machines • Haring (pp. 67-69) (Figs. 6-1, 6-2) • Some units are used for intraoral films • Some units are used for extraoral films

  8. Component Parts • Haring (pp. 15-16, 67-70) (Figs. 2-11, 2-12, 6-3, 6-4) • Tubehead • Extension arm • Suspends and allows for positioning of the tubehead • Control panel • On-off switch and indicator light, exposure button and indicator light, control devices (time, kilovolt peak, milliamperage)

  9. Identify the components: A. B. C. B C A

  10. Component Parts Tubehead Beam Indicating Device Control panel On-off switch Control devices, timer

  11. Dental X-ray Film Holders and Beam Alignment Devices • Haring (pp. 69-71) • Film holder • A device used to hold and align intraoral dental x-ray films in the mouth • Beam alignment device • An instrument used to help the dental radiographer position the PID relative to the tooth and film

  12. Types of Film Holders • Haring (pp. 69-71) (Figs. 6-5, 6-6, 6-7) • Disposable styrofoam bite block • EEZEE-Grip (Snap-A-Ray) • EndoRay • Uni-bite

  13. Types of Beam Alignment Devices • Haring (pp. 69, 71-72) (Figs. 6-8, 6-9, 6-10) • Precision film holders (Masel Orthodontics) • Rinn XCP and BAI Instruments

  14. Collimating Devices • Used with a beam alignment device to restrict size of the x-ray beam to the size of the film • Rectangular collimation significantly reduces exposure

  15. Next… • Chapter 9 – Film Processing • Read pgs. 101 – 108 • We will not spend time on manual processing, but you will be responsible for reading about it. • Continue reading pg. 113 – 127. • Be sure to review the quiz at the end of the chapter.

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