Vocabulary
What is the direct theory?
When critical areas/targets within the cells are directly hit with ionizing radiation, cell damage occurs
What is the abbreviation for radiation absorbed dose?
rad
Which one outweighs the other? Benefit or Risk of radiation?
Benefit
Cells that have somatic effects can be transmitted to their offspring.
False
What do dental professionals use to protect patients from dental radiation?
What are long-term effects?
Small amounts of radiation over a long period of time
What is the abbreviation of Sievert?
Sv
Give examples of 2 critical organs that are at risk for radiation exposure.
Thyroid gland, Bone marrow, Skin, Eyes
Latent period is the 2nd step in the sequence of radiation injury.
False
Give an example of natural radiation
Cosmic rays from outer space/ the sun
Radioactive potassium in food/water
Radioactive material found in the body
Uranium, radium, thorium in the Earth
What is a free radical?
An uncharged atom or molecule that exists with a single, unpaired electron in its outermost shell
What is the conversion of radiation absorbed dose (rad) to Gray (Gy)
1 rad = 0.01 Gy
What is the probability that someone acquires cancer from dental radiation?
3 in 1 million
True
Give the 3 periods in the sequence of radiation injury in order
Latent period
Period of injury
Recovery period