1|Page
BDA Dental Radiography and Radiology Exam 2026 |
Actual Exam ||Verified Exam!!| British Dental
Association | Dental Radiography
Certification||Newest Exam!!!
what sense is used to detect xrays? - Answer-Xrays
cannot be detected by any human sense
what type of radiation are xrays? - Answer-
electromagnetic
If an x-ray photon passes straight through the patient
without touching them, we say it has been? - Answer-
Transmitted, X-rays can interact with the patient's tissues
in a number of ways, but it's important to remember x-rays
can just pass straight through without touching anything.
That's why it's vital you never stand in the path of the x-ray
beam
Inside a dental x-ray tube, what is the anode made of? -
Answer-A tungsten target set into a copper block
,2|Page
What setting on the control panel determines the energy
range of the x-rays produced? - Answer-kV, kV sets the
energy range of the x-ray beam.
What do we mean by 'indirect damage' when describing
the effects of x-rays on patient's tissue? - Answer-X-rays
hitting water and creating damaging, toxic chemicals,
Indirect damage occurs when x-rays hit water molecules,
turning them into toxic chemicals like hydrogen peroxide.
These toxic molecules can go on to cause damage
throughout the cell.
Which effects of X-rays principally concern the dental
profession? - Answer-Somatic stochastic effects, we are
mostly concerned about the chances of causing damage
to normal body cells.
What is the highest, safe dose of radiation that's 100%
guaranteed not to cause any negative health effects? -
Answer-0 mSv
What age group is most at risk of radiation induced
cancer? - Answer-0-20yrs old, cancer typically (but not
exclusively) takes time to develop. So, taking DNA
, 3|Page
damage at a young age leaves more time to develop into
something serious.
What do we normally mean when we say "dose" in relation
to medical and dental radiation exposures? - Answer-
Effective dose, effective doses accounts for the type of
radiation used and the type of body tissue being exposed.
What type of image receptor requires the least amount of
radiation to create a radiographic image? - Answer-Digital
receptor, digital sensors require the lowest amount of
radiation, and therefore the lowest dose to the patient.
Hence the recommendations to use digital sensors
wherever possible.
What x-ray set variable affects the degree of blackening of
the radiographic image? - Answer-mA controls the quantity
of x-ray photons in the beam. The more photons hit the
image receptor, the more blackening of the final image.
Why must we use a shield when the x-ray beam is pointed
at the patient's thyroid gland? - Answer-The thyroid gland
is particularly sensitive to radiation damage
BDA Dental Radiography and Radiology Exam 2026 |
Actual Exam ||Verified Exam!!| British Dental
Association | Dental Radiography
Certification||Newest Exam!!!
what sense is used to detect xrays? - Answer-Xrays
cannot be detected by any human sense
what type of radiation are xrays? - Answer-
electromagnetic
If an x-ray photon passes straight through the patient
without touching them, we say it has been? - Answer-
Transmitted, X-rays can interact with the patient's tissues
in a number of ways, but it's important to remember x-rays
can just pass straight through without touching anything.
That's why it's vital you never stand in the path of the x-ray
beam
Inside a dental x-ray tube, what is the anode made of? -
Answer-A tungsten target set into a copper block
,2|Page
What setting on the control panel determines the energy
range of the x-rays produced? - Answer-kV, kV sets the
energy range of the x-ray beam.
What do we mean by 'indirect damage' when describing
the effects of x-rays on patient's tissue? - Answer-X-rays
hitting water and creating damaging, toxic chemicals,
Indirect damage occurs when x-rays hit water molecules,
turning them into toxic chemicals like hydrogen peroxide.
These toxic molecules can go on to cause damage
throughout the cell.
Which effects of X-rays principally concern the dental
profession? - Answer-Somatic stochastic effects, we are
mostly concerned about the chances of causing damage
to normal body cells.
What is the highest, safe dose of radiation that's 100%
guaranteed not to cause any negative health effects? -
Answer-0 mSv
What age group is most at risk of radiation induced
cancer? - Answer-0-20yrs old, cancer typically (but not
exclusively) takes time to develop. So, taking DNA
, 3|Page
damage at a young age leaves more time to develop into
something serious.
What do we normally mean when we say "dose" in relation
to medical and dental radiation exposures? - Answer-
Effective dose, effective doses accounts for the type of
radiation used and the type of body tissue being exposed.
What type of image receptor requires the least amount of
radiation to create a radiographic image? - Answer-Digital
receptor, digital sensors require the lowest amount of
radiation, and therefore the lowest dose to the patient.
Hence the recommendations to use digital sensors
wherever possible.
What x-ray set variable affects the degree of blackening of
the radiographic image? - Answer-mA controls the quantity
of x-ray photons in the beam. The more photons hit the
image receptor, the more blackening of the final image.
Why must we use a shield when the x-ray beam is pointed
at the patient's thyroid gland? - Answer-The thyroid gland
is particularly sensitive to radiation damage
