RADIOLOGY EXAM WITH 100%
CORRECT ANSWERS LATEST
UPDATE
What is the maximum permissible does (MPD) for dental personnel? - Answer- 5.0
rems/year
How many types of radiation are there? - Answer- 5 types; general, scatter, primary,
secondary, and ionizing/electromagnetic
What is the function of the cathode? - Answer- supply electrons necessary to generate
x-rays
What is a dosimeter badge used for? - Answer- keeps track of the amount of radiation
that reaches the body of the dental radiographer
What are the reasons indicated for taking dental radiographs? - Answer- detect lesions,
diseases, and conditions of the teeth and surrounding structures that cannot be seen
clinically
What change in technique should be used for a maxillary periapical if the patient has a
shallow palate - Answer- increase vertical angulation
When taking a panoramic, the patients head should be oriented - Answer- with the
midsagittal plane perpendicular to the floor
What will result in a radiographic image that's too light - Answer- weak developer
Life expectancy of a radiographic processing solution depends on all except - Answer-
temperature
Insufficient washing of processed radiograph will result in - Answer- brownish-yellow
stain on radiograph
Which method is most effective for handling and processing radiographs to prevent
microbial contamination - Answer- cover with barrier envelopes
Radiographs mounted with the raised dots toward the observer are examined as though
the observer is - Answer- outside the mouth looking in
, If there are no teeth which landmarks indicates a maxillary molar radiograph - Answer-
maxillary tuberosity
Where is the landmark incisive foramen usually located - Answer- maxillary anterior
Which landmarks would be most likely to indicate the midline of the mandible - Answer-
genial tubercles
If all known radiation safety precautions are exercised, an operator who is pregnant can
safely expose radiographs during the operators - Answer- entire pregnancy
What is the correct order for the manual film processing technique? - Answer-
developing, rinsing, fixing, washing, drying
What is the correct order for the automatic film processing technique? - Answer-
developer, fixer, washing, drying
Explain the principles of the paralleling technique - Answer- receptor is placed parallel
to long axis of the tooth
central ray is perpendicular to receptor and long axis
beam alignment device must be used
Explain the principles of the bisecting technique in detail - Answer- receptor is placed on
lingual surface of tooth
visualize a bisecting plane
central ray must be 90 degrees
What landmark(s) should be seen on a maxillary bicuspid film? - Answer- maxillary
sinus
What do panoramic films show? - Answer- an overall view of the maxilla and mandible
What do cephalometric films show? - Answer- bones of the face, skill, and soft tissue
profile of the face
What are the specific functions and times required for the film developer, fixer, and
wash? - Answer- 4 - 6 minutes
Give one example of something radiolucent and one example of something radiopaque
- Answer- radiolucent; caries, inter proximal space, pulp chamber
radiopaque; metal restorations
What is the correct temperature for manual film developing? - Answer- 68 - 70 degrees
CORRECT ANSWERS LATEST
UPDATE
What is the maximum permissible does (MPD) for dental personnel? - Answer- 5.0
rems/year
How many types of radiation are there? - Answer- 5 types; general, scatter, primary,
secondary, and ionizing/electromagnetic
What is the function of the cathode? - Answer- supply electrons necessary to generate
x-rays
What is a dosimeter badge used for? - Answer- keeps track of the amount of radiation
that reaches the body of the dental radiographer
What are the reasons indicated for taking dental radiographs? - Answer- detect lesions,
diseases, and conditions of the teeth and surrounding structures that cannot be seen
clinically
What change in technique should be used for a maxillary periapical if the patient has a
shallow palate - Answer- increase vertical angulation
When taking a panoramic, the patients head should be oriented - Answer- with the
midsagittal plane perpendicular to the floor
What will result in a radiographic image that's too light - Answer- weak developer
Life expectancy of a radiographic processing solution depends on all except - Answer-
temperature
Insufficient washing of processed radiograph will result in - Answer- brownish-yellow
stain on radiograph
Which method is most effective for handling and processing radiographs to prevent
microbial contamination - Answer- cover with barrier envelopes
Radiographs mounted with the raised dots toward the observer are examined as though
the observer is - Answer- outside the mouth looking in
, If there are no teeth which landmarks indicates a maxillary molar radiograph - Answer-
maxillary tuberosity
Where is the landmark incisive foramen usually located - Answer- maxillary anterior
Which landmarks would be most likely to indicate the midline of the mandible - Answer-
genial tubercles
If all known radiation safety precautions are exercised, an operator who is pregnant can
safely expose radiographs during the operators - Answer- entire pregnancy
What is the correct order for the manual film processing technique? - Answer-
developing, rinsing, fixing, washing, drying
What is the correct order for the automatic film processing technique? - Answer-
developer, fixer, washing, drying
Explain the principles of the paralleling technique - Answer- receptor is placed parallel
to long axis of the tooth
central ray is perpendicular to receptor and long axis
beam alignment device must be used
Explain the principles of the bisecting technique in detail - Answer- receptor is placed on
lingual surface of tooth
visualize a bisecting plane
central ray must be 90 degrees
What landmark(s) should be seen on a maxillary bicuspid film? - Answer- maxillary
sinus
What do panoramic films show? - Answer- an overall view of the maxilla and mandible
What do cephalometric films show? - Answer- bones of the face, skill, and soft tissue
profile of the face
What are the specific functions and times required for the film developer, fixer, and
wash? - Answer- 4 - 6 minutes
Give one example of something radiolucent and one example of something radiopaque
- Answer- radiolucent; caries, inter proximal space, pulp chamber
radiopaque; metal restorations
What is the correct temperature for manual film developing? - Answer- 68 - 70 degrees
