Radiology Test Questions
On a dental radiograph, the lamina dura appears:
A dense radiopaque line that surrounds the root of the tooth
Weak radiation leaving the tube during exposure is prevented by use of a/an:
Aluminum Filter
Which option below, best describes an ion?
An atom that has lost electrons
The area of the mandible where the ramus and body meet is termed:
Angle of the Mandible
You take an image of the maxillary anterior teeth, you see a radiopaque "V" above the roots of the teeth. What landmark is this?
Anterior Nasal Spine
What is the negatively charged particle that is responsible for producing dental radiographs?
Electron
What is the bite-wing technique used to examine?
Examining the interproximal surfaces, Detecting decay, and Examining interproximal crestal bone levels
Nutrient canals are most often seen in the _______ because the bone is typically thin.
Mandibular Anterior
Which of the following mandibular landmarks can be seen on a panoramic image but CANNOT be seen on intraoral images?
Mandibular Condyle
When taking an image of the maxillary molars, you are going to see which of the following landmarks?
Maxillary Sinus
The rounded, radiopaque prominence that extends distal to the maxillary third molars:
Maxillary Tuberosity
The immovable joint that fuses the two maxilla bones and appears radiolucent on a radiograph:
Median Palatal Suture
A small, round radiolucency between apicies of the mandibular premolars:
Mental Foramen
A radiopaque, vertical bony wall that divides the nasal cavity into the right and left portions:
Nasal septum
The styloid process is visible on which type(s) of images?
Panoramic Radiograph
In the bite-wing technique, the receptor is placed __________ to the crowns of both the maxillary and mandibular teeth.
Parallel
The beam of radiation which is responsible for exposing the x-ray film is the:
Primary
When looking at a film, which tooth structure is radiolucent?
Pulp
The term used for a two-dimensional representation of a three-dimensional image:
Radiograph
On a panoramic image, the lip-line appears:
Radiolucent where the lips do not cover the teeth and radiopaque where the lips cover the teeth
The genial tubercles appear _____ on a dental film.
Radiopaque
The J- or U-shaped radiopacity located superior to the maxillary first molars:
Zygomatic Process of the Maxilla
The cathode in the ________________ terminal.
negative
Due to the slight bend in the vertical angulation during the bite-wing technique, what angle is used to compensate?
+10
1. General Radiation 2. Primary Radiation 3. Scatter Radiation 4. Secondary Radiation 5. Character Radiation
1. Produced when an electron hits the nucleus of a tungsten atom 2. Penetrating beam that is produced at the target of the anode 3. The result of an x-ray being deflected from its path 4. Created when the primary beam interacts with matter 5. Produced when a high-speed electron dislodges an inner shell of a tungsten atom
The mandibular canal is a tube-like passageway through bone that houses the inferior alveolar nerve block. It appears as a radiolucent band on which type(s) of films?
Both Intraoral and Panoramic Films
The coronoid process appears as a radiopacity on which type(s) of films:
Both Panoramic and Intraoral Films
Who is credited with the first practical use of radiographs in dentistry?
C. Edmund Kells
The term used to describe the softer, matrix of spongy bone in-between 2 layers of dense bone is:
Cancellous Bone
A person who positions, exposes, and processes dental radiographs is a:
Dental Radiographer
What is the most important use of dental radiographs?
Detection
_________ was the New York dentist that was the first to use film in intraoral radiographs.
Frank Van Woert
Besides gamma rays, what additional radiation wave from the EMR spectrum is considered harmful to tissue due to its wavelength?
Ultra-violet
Which radiology pioneer is known as "the father" of x-rays?
Wilhem Conrad Roentgen
After removing an exposed film from the patient's mouth, the first thing you should do is:
Wipe saliva from film
A beam of energy that has power to penetrate objects and record their shadows is an/a ___________.
X-Ray