Exam 3 terminology

Question 1

Alignment of central ray of x-ray beam in horizontal and vertical planes

Answer 1

Angulation

Question 2

Imaginary line that divides the patient’s face into equal right and left sides.

Answer 2

Midsaggital plane

Question 3

Area of the mesial or distal surface of a tooth that touches the adjacent tooth in the same arch.

Answer 3

Contact area

Question 4

Intraoral technique of exposing periapical films.

Answer 4

bisecting technique

Question 5

Imaginary plane that passes through the top of the ear canal and the bottom of the eye socket.

Answer 5

Frankfort plane

Question 6

Impairment of a certain function(s) of the body, such as vision, hearing, or mobility.

Answer 6

physical disability

Question 7

X-ray at center of beam.

Answer 7

central ray

Question 8

Joint on each side of the head that allows for movement of the mandible.

Answer 8

temporomandibular

Question 9

Impairment of mental or physical functioning that usually occurs before adulthood and lasts indefinitely.

Answer 9

developmental disability

Question 10

Intraoral technique of exposing periapical and bitewing radiographs.

Answer 10

paralleling technique

Question 11

Image view showing the crowns of both arches on one film. Type of image used for interproximal examination.

Answer 11

bitewing

Question 12

Images taken when large areas of the skull or jaw must be examined.

Answer 12

extraoral images

Question 13

Feature that allows the operator to adjust the milliamperage and kilovoltage settings

Answer 13

exposure control

Question 14

Angle of 90 degrees formed by two lines perpendicular to each other.

Answer 14

right angle

Question 15

Intersecting at or forming a right angle.

Answer 15

perpendicular

Question 16

Moving or lying in the same plane, always separated by the same distance.

Answer 16

parallel

Question 17

Between two adjacent surfaces

Answer 17

interproximal

Question 18

Radiographic image that shows large areas of the maxilla or mandible.

Answer 18

occlusal technique

Question 19

Imaginary three-dimensional horseshoe-shaped zone used to focus panoramic radiographs.

Answer 19

focal trough

Question 20

Coronal portion of alveolar bone found between the teeth.

Answer 20

crestal bone

Question 21

Intraoral device used to position and hold the radiographic film, sensor, or PSP.

Answer 21

positioning instrument

Question 22

Image of the teeth and bones made by placing the film or cassette against the face or the head and projecting the x-rays from the opposite side.

Answer 22

extraoral imaging

Question 23

Imaginary line dividing the tooth longitudinally (vertically) into two equal halves

Answer 23

long axis of tooth

Question 24

Referring to radiographs with the proper images and necessary density, contrast, definition, and detail for diagnostic purposes

Answer 24

diagnostic quality