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Dental Nurse 314 exam Q&A.
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Dental Nurse 314 examMild burns, cell mutation and cancer are all hazards of what? - ✅✅-Ionising
radiation from x-rays
Can X-rays be seen, heard or felt? - ✅✅-No
What is the safe level of use with x-rays? - ✅✅-There isn't a safe level
What does every radiation exposure cause? - ✅✅-Tissue damage
Long term, low level exposure to radiation. - ✅✅-Stochastic
Tissue reactions are... - ✅✅-Non-cancer damaging effects
Random development when exposed to any radiation dose:
Heritable effects - mutations from change to gene/chromosome
✅✅
Cancer induction - irradiated body cell causes radiation induced malignancy cancer
to develop - -Stochastic effects
IRR 1999 - ✅✅-Ionising Radiations Regulations 1999
IRMER 2000 - ✅✅-Ionising Radiation (Medical Exposure) Regulations
ALARP (As Low As Reasonably Practicable) - ✅✅-Principle of keeping radiation
levels low
Ensures local rules are set and placed by every x-ray machine - ✅✅-IRR 1999
compliance
✅✅
Dedicated legal person required to ensure full compliance in the workplace -
-IRR 1999 compliance
✅✅
A Radiation Protection Advisor (RPA) and Radiation Protection Supervisor (RPS) are
in compliance of... - -IRR 1999
✅✅
Justification, optimisation, limitation, quality assurance and staff training. -
-IRMER 2000
✅✅
Operator - any member of the dental team who carries out all or part of the duties
involved with exposure and processing - -IRMER 2000
✅✅
Dentist radiographer who takes responsibility for justifying the taking of a radiograph
- -IRMER practitioner
,1. Switch power off if: x-ray machine seriously malfunctioning, smell of smoke or
sudden problem
2. Carry out controlled shut down of equipment
✅✅
3. Ensure no use of equipment by informing staff and notifying RPA/RPS.
These are all steps of the... - -Procedure for managing an equipment failure
✅✅
If more than 150 intraoral or 50 dental pantomograph films are taken p/week staff
should wear a... - -Personal monitoring dosemeter
✅✅
Electromagnetic energy passes through the object and reacts with the... -
-Photographic layer of film
This will show up as a circular area at the apex of the tooth. - ✅✅-Chronic
periapical abscess
✅✅
This shows up as a dark area of destruction extending inwards from the enamel
surface. - -Caries
✅✅
Consequences of incorrect mounting are films getting mixed up or lost, retakes being
needed, a breach of confidentiality and... - -The wrong tooth receiving
treatment
✅✅
Which set of regulations sets out the responsibility of dental personnel involved with
radiography? - -IRMER 2000
✅✅
Which set of regulations states there must be a set of local rules displayed by each
x-ray machine? - -IRR 1999
✅✅
Staff training radiography records are a key point in which piece of legislation? -
-IRMER 2000
Periodontal disease shows up as what on a radiograph? - ✅✅-Loss of lamina dura
✅✅
An alternative to using a bitewing holder to achieve a bitewing radiograph is... -
-Sticky tabs
What happens if incorrect angulation occurs for a bitewing? - ✅✅-Contact points
appear overlapped
✅✅
Which is the best radiograph to take for assessment of the antral floor? -
-Occlusal
A periapical radiograph is taken to show... - ✅✅-Individual teeth
, The two techniques used to take periapicals are: - ✅✅-Bisected angle and
paralleling
Occlusal radiographs show... - ✅✅-Either mandible or maxilla
One of the uses of an occlusal radiograph is... - ✅✅-Assessment of the condition
of the antral floor
✅✅-2 intensifying screens
Extraoral cassettes contain... -
How many stages are involved in chemical processing? - ✅✅-5
Cephalostats are used extensively in... - ✅✅-Orthodontics
✅✅
Which type of radiograph would be taken to assess jaw relationships? -
-Cephalostat
Orthopantomographs show... - ✅✅-Both jaws in full and all teeth
The stages of manual chemical processing are: - ✅✅-Develop, wash, fix, wash,
dry
Processing chemicals should be disposed of as... - ✅✅-Non-infectious waste
In manual processing a film should be immersed in fixer for... - ✅✅-8-10 minutes
Stochastic effects can take place at what level of radiation exposure? - ✅✅-Any
level
In manual processing a film should be immersed in developer for... -✅✅-5 minutes
In manual processing the temperature of the developer should be... - ✅✅-20
degrees celcius
Elongation of a radiograph is caused by... - ✅✅-Collimator angulation is too
shallow
Foreshortening of a radiograph is caused by... - ✅✅-Collimator angulation is too
steep
Coning of an image on a radiograph is caused by... - ✅✅-Collimator angulation is
not central to film
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