TCDHA Rad Theory FINAL
Roentgen does not have a _____________ - ✔️✔️SI equivalent
Classifications of ionizing radiation - ✔️✔️electromagnetic, particulate
electromagnetic radiation - ✔️✔️man made or occurs naturally, possesses no mass
Particulate radiation - ✔️✔️tiny particles of matter that possess mass and travel in
straight lines and at high speeds
Tube head is immersed in - ✔️✔️oil, to provide electrical insulation and dispense of
heat
First invented Xrays - ✔️✔️Wilhelm Conrad Roetgen 1895
Cathode - ✔️✔️negative charge terminal made of tungsten
anode - ✔️✔️postive charge terminal made of copper
Cones - ✔️✔️8 or 16 inches
Collimator - ✔️✔️Lead disk to restrict the size of the beam
High mA produces - ✔️✔️lighter image
Low kVp produces - ✔️✔️High contrast
transformers - ✔️✔️A device that increases or decreases the voltage of an electrical
current
Compton scattering - ✔️✔️62 percent
Paralelling technique advantages - ✔️✔️accurate, simple, standardized
paralelling technique disadvantages - ✔️✔️film placement, discomfort
increased target receptor distance - ✔️✔️avoids magnification
central ray is _____degrees to receptor - ✔️✔️90
, central ray is _______degrees to tooth surface - ✔️✔️+10
Radiolucent - ✔️✔️appears dark
radiopaque - ✔️✔️appears light
airspace - ✔️✔️black space between teeth
Xray film layers - ✔️✔️film base, adhesive layer, film emulsion, protective layer
what is the thickest layer of xray film? - ✔️✔️base
components of film emulsion - ✔️✔️gelatin and silver halide crystals
latent image - ✔️✔️remains invisible until the film is processed
extraoral films - ✔️✔️panoramic and cephalometric
types of dental x-ray film - ✔️✔️Intraoral
Extraoral
Duplicating
uses of horizontal bitewings - ✔️✔️interproximal caries and bone loss
_______ silver hilade crystals create faster film speed - ✔️✔️large
F speed film requires _____ radiation exposure - ✔️✔️less
film speed is determined by - ✔️✔️size of silver halide crystals
thickness of the emulsion
radiosensitive dyes
purple films contain _____ film, blue have ____ - ✔️✔️one, two
the label side of a film packet - ✔️✔️has a flap
two types of extra oral film - ✔️✔️screen and nonscreen
cephalometric films are - ✔️✔️square in shape
modern dentistry uses - ✔️✔️screen films
emulsion appears on only one side on __________ films - ✔️✔️duplicate
Roentgen does not have a _____________ - ✔️✔️SI equivalent
Classifications of ionizing radiation - ✔️✔️electromagnetic, particulate
electromagnetic radiation - ✔️✔️man made or occurs naturally, possesses no mass
Particulate radiation - ✔️✔️tiny particles of matter that possess mass and travel in
straight lines and at high speeds
Tube head is immersed in - ✔️✔️oil, to provide electrical insulation and dispense of
heat
First invented Xrays - ✔️✔️Wilhelm Conrad Roetgen 1895
Cathode - ✔️✔️negative charge terminal made of tungsten
anode - ✔️✔️postive charge terminal made of copper
Cones - ✔️✔️8 or 16 inches
Collimator - ✔️✔️Lead disk to restrict the size of the beam
High mA produces - ✔️✔️lighter image
Low kVp produces - ✔️✔️High contrast
transformers - ✔️✔️A device that increases or decreases the voltage of an electrical
current
Compton scattering - ✔️✔️62 percent
Paralelling technique advantages - ✔️✔️accurate, simple, standardized
paralelling technique disadvantages - ✔️✔️film placement, discomfort
increased target receptor distance - ✔️✔️avoids magnification
central ray is _____degrees to receptor - ✔️✔️90
, central ray is _______degrees to tooth surface - ✔️✔️+10
Radiolucent - ✔️✔️appears dark
radiopaque - ✔️✔️appears light
airspace - ✔️✔️black space between teeth
Xray film layers - ✔️✔️film base, adhesive layer, film emulsion, protective layer
what is the thickest layer of xray film? - ✔️✔️base
components of film emulsion - ✔️✔️gelatin and silver halide crystals
latent image - ✔️✔️remains invisible until the film is processed
extraoral films - ✔️✔️panoramic and cephalometric
types of dental x-ray film - ✔️✔️Intraoral
Extraoral
Duplicating
uses of horizontal bitewings - ✔️✔️interproximal caries and bone loss
_______ silver hilade crystals create faster film speed - ✔️✔️large
F speed film requires _____ radiation exposure - ✔️✔️less
film speed is determined by - ✔️✔️size of silver halide crystals
thickness of the emulsion
radiosensitive dyes
purple films contain _____ film, blue have ____ - ✔️✔️one, two
the label side of a film packet - ✔️✔️has a flap
two types of extra oral film - ✔️✔️screen and nonscreen
cephalometric films are - ✔️✔️square in shape
modern dentistry uses - ✔️✔️screen films
emulsion appears on only one side on __________ films - ✔️✔️duplicate
