What are extraoral radiographs?
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In respect to this, what are the three types of dental images?
There are three types of diagnostic radiographs taken in today's dental offices -- periapical (also known as intraoral or wall-mounted), panoramic, and cephalometric. Periapical radiographs are probably the most familiar, with images of a few teeth at a time captured on small film cards inserted in the mouth.
Also Know, what is a cephalometric radiograph? A Cephalometric radiograph is a radiograph of the head taken in a Cephalometer (Cephalostat) that is a head-holding device introduced in 1931 by Holly Broadbent Sr. in USA. The Cephalometer is used to obtain standardized and comparable craniofacial images on radiographic films.
Herein, what is a periapical radiograph used for?
A periapical x-ray is one that captures the whole tooth. It shows everything from the crown (chewing surface) to the root (below the gum line). Each periapical x-ray shows a small section of your upper or lower teeth. These x-rays are often used to detect any unusual changes in the root and surrounding bone structures.
What two planes are used to position the patient to take extraoral radiographs?
Panoramic radiography. There are four basic anatomical planes used to properly position a patient: the ala-tragus plane, orbital/meatus plane (the Frankfort plane), canine/meatus plane, and median sagittal plane. Devices for positioning the head and supporting the chin are also important for precise positioning.