direct radiographyWhen people think about direct radiography in dentistry, they usually think about direct digital sensors and direct sensors with a cable attached; these sensors are using CMOS technology. The other type of technology is CCD wich hit the market first – but CMOS is primarily used because it is inexpensive and each individual pixel caputred sends information back to the computer. The sensor position allows for a parallel film technique for periapicals.

In our third installment on oral radiography basic training, Using Positioners for Direct Digital Radiography, Dr. Jeffrey price demonstrates the proper technique for both film and x-ray head placement. He will also highlight making anterior and posterior periapical exposures with direct digital sensors, as well as, making horizontal and vertical bitewing exposures with direct digital sensors.

After viewing this lesson on direct digital radiography, you'll have a better understanding of:



  • Placement of film in the positioner

  • Placement of the positioner in the patient's mouth

  • Placement of the x-ray head against film positioner


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Denise Prichard is the Editor for Spear Education.