RADIOLOGY !

Who discovered the X-ray?

Wilhelm Roentgen

Most important use of radiography in the dental practice?

For Diagnosis

Which form of radiation causes Ionization in body tissue?

X-Ray

What metal is used for the target in the x-ray tube

Tungsten

Which term describes the white areas on the processed radio graph?

Radiopaque

Which tissue has the smallest recovery rate from radiation exposure

Reproductive cells

During pregnancy the greatest danger to the embryo is during?

The first trimester

Which tissue located in the path of dental radiation is radio-sensitive

Lens of the eye

What is Erythema?

The earliest detectable symptom of excessive radiation exposure

Which of these digital receptors is the largest

Occlusal

Which of these is a facial landmark

Tragus

Which of these structures appears translucent?

Dental pulp

Which of these is not a mandibular landmark?

Incisive foreman

Which of these structures appears radiopaque?

maxillary tuberosity

Is enamel Radiopaque or Radiolucent

Radiopaque

Does the Lamina Dura appear radiopaque/radiolucent?

Radiopaque

Does chronic abscess appear radiopaque or radiolucent?

Radiolucent

What is elongation?

A condition caused by insufficient vertical angulation

This determines whether the radiograph is of the patients right or left side

The Identification Dot

What is the result of incorrect horizontal angulation?

Overlapping

What condition is not visible on an inter proximal radiograpgh

Apical Abscess

What is most likely to reduce the usefulness of inter proximal images?

Incorrect horizontal angulation

Bisector

The imaginary line that bisects the angle formed by the image receptor and teeth.

What would be the best film to use to diagnose a Sialolith in the bartholins duct

An occlusal image

Which type of receptor is never used when making endentulous survey?

Interproximal

Which of these films is most often used in an extra-oral radiograph

Screen film

In what position should the incisors be in for a panoramic exposure

Edge to edge relationship

What is the most effective way of protecting yourself from scatter radiation?

Shielding

True or False: After the X-ray machine is turned off, x-rays continue to bounce around the room.

Never, they stop instantaneously

What is the principal health hazard to the operator in Radiography

Scatter radiation

What happens when you increase the Milliamperage of the X-ray

It increases the intensity or the number of X-rays generated

What does Collimation of the primary beam do

Restricts the size of the beam to the area of interest

Radiographs are the property of?

The Dentist

What is the cathode of the X-ray tube?

The negative terminal

X-rays must be used as legal evidence because?

They are evidence of previous conditions

The control should be located at least how many feet from the tube head?

6 ft

Collimators are usually made of what material

Lead

When taking intraoral radiograpghs, the sagital plane of the patients head should be?

Perpendicular to the floor

Extraoral films are placed in rigid frames called?

Cassestes

What determines the atomic number of an atom ?

The number of protons

What should a patient remove when preparing for a panoramic radiograph

Eyeglasses,Hair pins, Earrings