Ch 9 Dental Terminology Matching, Fill-ins, Definitions

1. _______ Cathode

I- negative pole in tube, source of electrons

2. ________ Sensitivity of rays

O- ability of rays to penetrate and possibly ionize tissues.

3. __________ Indirect digital x-ray

A- conversion of a processed radiograph to a digital work station.

4. _______ Detail

G- point-to-point delineation or view of tiny x-ray structures.

5. ________ radiolucent

E- ability of substance to permit ray passage, making film dark.

6. _________ cephalometric

B- radiograph of head, used in orthodontics, prosthodontics.

7. _______ definition

D- sharpness and clarity of image outline on radiograph.

8. ________ sagittal plane

H- imaginary line dividing head into right and left sides.

9. _______ ala-tragus line

N- imaginary line to direct placement of PID during exposures.

10. _______ Edentulous survey

M- radiographs of patients without teeth.

11. _______ aperture or port

C- opening in lead collimator to regulate beam size.

12. ______ reticulation

K- crackling of film emulsion surface caused by temperature change.

13. ______ ion

J- particle carrying electric charge

14. ______ elongation

F- tooth structure appearing longer than anatomical size.

15. _______ biteblock

L- device used to maintain films in the mouth during exposure.

1. The controlling factor in the production of electrons available for radiographs is:

A.) Kilovolt power

B.) millliampere control

C.) timer switch

D.) timer

A.) Kilovolt power

2. Aluminum disks placed between the collimator and the tube window to remove weak radiation are:

A.) collimators

B.) anodes

C.) filters

D.) cathodes

C.) filters

3. The tubehead area where the central beam or primary ray is projected is the:

A.) target plane

B.) focal spot

C.) primary target

D.) filament

B.) focal spot

4. The positive pole in the tubehead that serves as a target for electron barrage is the:

A.) filter

B.) filament

C.) anode

D.) PID

C.) anode

5. The abbreviation for the term milliampere is:

A.) MA

B.) mA

C.) Ma

D.) MilA

B.) mA

6. The central ray or beam of radiation emitting from the tubehead or PID is:

A.) primary radiation

B.) secondary radiation

C.) stray radiation

D.) soft radiation

A.) primary radiation

7. The time or duration of interval when the current will pass through the x-ray tube is the:

A.) processing time

B.) count-up time

C.) exposure time

D.) latent time

C.) exposure time

8. The distance between the anode target and the object to be radiographed is called the:

A.) target-film distance

B.) target-object distance

C.) film-PID distance

D.) focal spot distance

A.) target-object distance

9. Cumulative effect is the:

A.) effect required to expose film emulsion to radiation

B.) effect required to process the radiograph

C.) effect of continual exposure to radiation

C.) effect of continual exposure to radiation over time leading to increased risk of damage.

10. The color of a RINN positioning device used for endodontic work is:

A.) blue

B.) green

C.) red

D. yellow

B.) green

11. The ability of x-rays to penetrate and possibly ionize body tissues is called:

A.) mutation effect

B.) cumulative effect

C.) sensitivity

D.) ionization concentration

C.) sensitivity

12. Radiation overdose that causes temporary redness of the skin is:

A.) rad

B.) erythema dose

C.) Roentgen dose

D.) mA dose

B.) erythema dose

13. Which type of film would be used to view the tooth crown, roots and surrounding tissues:

A.) interproximal

B.) periapical

C.) occulsal

D.) panoramic

B.) periapical

14. Another term for a bitewing exposure is:

A.) interproximal

B.) periapical

C.) occulsal

D.) panoramic

A.) interproximal

15. A size 4 radiograph packet would contain which film?

A.) interproximal

B.) periapical

C.) occulsal

D.) panoramic

C.) occulsal

16. Which of the following is not considered a basic safety precaution in exposure of radiographs?

A.) Dosimeter

B.) Safelight

C.) lead apron/ thyrocervical collar

D.) lead barrier or screen

B.) Safelight

17. Which of the following radiographic films is of particular use in orthodontics?

A.) periapical

B.) occulsal

C.) cephalometric

D.) edentulous

C.) cephalometric

18. Variations of black and white colors on a radiograph are considered on example of:

A.) contrast

B.) detail

C.) definition

D.) fog

A.) contrast

19. Another name for the paralleling technique for radiograph exposures is:

A.) right-angle technique

B.) short cone technique

C.) wide angle technique

A.) right-angle technique

20. If the PID is aimed in an upward position, it is considered to be which angulation?

A.) negative

B.) positive

C.) zero

D.) vertical

A.) negative