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Who made the first dental radigraph?
Otto Walkhoff
What is a latent image?
The image produced on the unprocessed film after it is exposed to x-radiation.
When should a lead apron be disinfected?
After each use
How many xrays are taken in a FMX?
18 (some offices will do 20)
4 BW & 14 PA
What does a grid help reduce?
scatter radiation
What were x-rays referred to as?
Roentgen rays
Why is a film holder necessary when using a rectangular PID?
To prevent cone cuts.
What is used to check the effectiveness of the safelight?
The coin test
What are the basic two techniques used to obtain a PA?
paralleling and bisecting
What does 'CBCT' stand for?
Cone beam computed tomography
Who is the dentist credited with the first practical use of dental radiographs?
New Orleans dentist C. Edmund Kells
What are the 3 liquids/solutions used in the automatic processor?
Developer, Fixer, Water
What federal act requires that all persons who take dental radiographs must be properly trained and certified?
The Consumer-Patient Radiation Health and Safety Act is a federal law that requires that all persons who take dental radiographs be properly trained and certified.
What imaging technique would be used for a patient with a shallow palate?
bisecting technique
What error during panoramic imaging causes an exaggerated smile line?
The Frankfort plane is not parallel to the floor; patient's chin is too low.
What are the purposes of the cathode and anode?
The cathode supplies electrons, and the anode is the target for those electrons.
Underdeveloped vs. overdeveloped film
under: x-ray appears light, developer solution too cool
over: x-ray appears dark, developer solution too hot
What is one of Ms. Jo's happy places?
Disneyland, Barnes & Noble, Target, the beach
(not in order)
What imaging error causes elongation and foreshortening?
Elongation is caused by insufficient vertical angulation and foreshortening is caused by excessive vertical angulation.
What are some common errors that can occur in panoramic dental radiography?
ghost images*, lead apron artifacts, chin positioning
genetic vs. somatic effects of radiation?
Genetic effects are caused by damage to reproductive/genetic cells and are passed to future generations. Somatic effects are caused by damage to any/all other types of cells and are not passed to future generations.
How much less radiation is used for digital than conventional radiography?
70% to 80% less
Who owns the xrays?
they are the property of the dentist but the pt can request copies
What are some tips to help with a gagging patient?
Breathe through your nose, wiggle your toes, humm, rinse with mouthwash, or place salt on tongue
Cephalo is the root word for?
head