TCDHA RADIOGRAPHY THEORY FINAL
PAPER QUESTIONS AND CORRECT
ANSWERS FULL REVIEW GUIDE
●● Bitewing XCP Color and orientation
Answer: Red
Both vertical or horizontal
●● Posterior Periapical XCP color and orientation
Answer: yellow
horizontal very rarely vertical
●● who prescribes radiographs
Answer: dentist
●● primary benefit of radiographs is
Answer: detection
●● periodontal disease needs radiographs to be diagnosed? true or false?
Answer: true
,●● all matter is composed of _________
Answer: all _________ is composed of atoms
●● who interprets radiographs
Answer: dentist hygienist & dentist
●● the most inner shell is called
Answer: k shell
●● shell closest to nucleus has the _____________
Answer: highest binding energy level
●● an atom can have up to how many shells?
Answer: 7
●● the first shell can contain _____ and the other 6 can contain ______
electrons
Answer: 2 on the inside shell and 8 on the outer shells
●● charge of proton
Answer: postive charge
,●● charge of neutron
Answer: neutral charge
●● charge of electron
Answer: negative
●● what are molecules
Answer: two or more atoms bonded together by chemical bond
●● molecules can be formed in two ways
Answer: transfer of electrons
sharing electrons between outer most shell
●● ionization
Answer: Ionization = when an atom gains or loses electrons and
becomes charged (an ion)
●● radtiation
Answer: is the emission and propagation of energy through space or a
substance in the form of waves or particles
Radiation = energy traveling
●● radioactivity
, Answer: unstable atoms or elements undergo spontaneous disintegration
or decay, in effort to attain a more balanced nuclear state
ex: atom feels sick, it barfs, it feels better.
it feels off, releases energy and becomes more stable
●● 2 types of ionizing radation
Answer: particulate radiation - tiny pieces of matter
electromagnetic radiation - energy waves in both particles and waves
●● particulate radiation 4 types
Answer: particulate radiation - throwing particles out
electrons (beta particles) - small + fast
alpha particles - big + heavy
protons - mass of 1 charge of +1
neutrons- mass of 1 no charge
●● particulate radiation: electrons
PAPER QUESTIONS AND CORRECT
ANSWERS FULL REVIEW GUIDE
●● Bitewing XCP Color and orientation
Answer: Red
Both vertical or horizontal
●● Posterior Periapical XCP color and orientation
Answer: yellow
horizontal very rarely vertical
●● who prescribes radiographs
Answer: dentist
●● primary benefit of radiographs is
Answer: detection
●● periodontal disease needs radiographs to be diagnosed? true or false?
Answer: true
,●● all matter is composed of _________
Answer: all _________ is composed of atoms
●● who interprets radiographs
Answer: dentist hygienist & dentist
●● the most inner shell is called
Answer: k shell
●● shell closest to nucleus has the _____________
Answer: highest binding energy level
●● an atom can have up to how many shells?
Answer: 7
●● the first shell can contain _____ and the other 6 can contain ______
electrons
Answer: 2 on the inside shell and 8 on the outer shells
●● charge of proton
Answer: postive charge
,●● charge of neutron
Answer: neutral charge
●● charge of electron
Answer: negative
●● what are molecules
Answer: two or more atoms bonded together by chemical bond
●● molecules can be formed in two ways
Answer: transfer of electrons
sharing electrons between outer most shell
●● ionization
Answer: Ionization = when an atom gains or loses electrons and
becomes charged (an ion)
●● radtiation
Answer: is the emission and propagation of energy through space or a
substance in the form of waves or particles
Radiation = energy traveling
●● radioactivity
, Answer: unstable atoms or elements undergo spontaneous disintegration
or decay, in effort to attain a more balanced nuclear state
ex: atom feels sick, it barfs, it feels better.
it feels off, releases energy and becomes more stable
●● 2 types of ionizing radation
Answer: particulate radiation - tiny pieces of matter
electromagnetic radiation - energy waves in both particles and waves
●● particulate radiation 4 types
Answer: particulate radiation - throwing particles out
electrons (beta particles) - small + fast
alpha particles - big + heavy
protons - mass of 1 charge of +1
neutrons- mass of 1 no charge
●● particulate radiation: electrons
