TCDHA 2026 STUDY EXAMS GUIDE QUESTIONS AND
ANSWERS SURE A+
✔✔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
✔✔intraoral film used for an overall view of the maillae - ✔✔occlusal
✔✔film characteristic to obtain standard density - ✔✔speed
✔✔Intensifying screens are used to - ✔✔reduce patient radiation dose, and amplify the
incoming x-ray beam
✔✔if intensifying film is not in contact with the film - ✔✔loss of image sharpness
✔✔Ideal storage temp - ✔✔50-70 degrees fahrenheit
✔✔short scale contrast - ✔✔high contrast
✔✔long scale contrast - ✔✔low contrast
✔✔sharpness is influenced by - ✔✔Focal spot size, film composition, movement
✔✔image appears fuzzy - ✔✔penumbra
✔✔longer PID - ✔✔less image magnification
✔✔shorter PID - ✔✔more image magnification
✔✔vertical angulation - ✔✔results in elongation
✔✔invented paralleling technique - ✔✔Fitzgerald
✔✔strongest binding orbit - ✔✔K
✔✔Determine the energy and penetrating power of radiation - ✔✔wavelengths
, ✔✔Tube head seal - ✔✔aluminum or leaded glass covering that permits exit of x-rays.
✔✔restricts the size of the x-ray beam - ✔✔lead collimator
✔✔ideal collimation - ✔✔rectangular
✔✔silver halide crystals - ✔✔Absorb radiation during x-ray exposure and store energy
from the radiation
✔✔ALARA - ✔✔As Low As Reasonably Achievable
✔✔Regulates the temperature at the cathode filament - ✔✔mA
✔✔Stochastic - ✔✔direct function of dose
✔✔Somatic cells include reproductive - ✔✔false
✔✔inherent filtration - ✔✔primary beam passes through the glass window of the xray
tube, the insulating oil and the tube head
✔✔which type of collimation is best - ✔✔rectangular
✔✔MPD - ✔✔maximum permissible dose
✔✔Film emulsion - ✔✔increases sensitivity to x radiation
✔✔Amalgam fillings appear ___ on processed films - ✔✔radiopaque
✔✔time___ affects contrast - ✔✔does not
✔✔Forshortening - ✔✔excessive vertical angulation, tooth is shortened
✔✔order for taking posterior PA - ✔✔premolar then molar
✔✔manual film processing steps - ✔✔development, rinsing, fixation, washing, and
drying
✔✔rinsing - ✔✔removes developer and stops the development process
✔✔fixation - ✔✔removes unexposed silver halide crystals, emulsion is hardened
✔✔light leaks in a dark room will cause - ✔✔fogged films
ANSWERS SURE A+
✔✔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
✔✔intraoral film used for an overall view of the maillae - ✔✔occlusal
✔✔film characteristic to obtain standard density - ✔✔speed
✔✔Intensifying screens are used to - ✔✔reduce patient radiation dose, and amplify the
incoming x-ray beam
✔✔if intensifying film is not in contact with the film - ✔✔loss of image sharpness
✔✔Ideal storage temp - ✔✔50-70 degrees fahrenheit
✔✔short scale contrast - ✔✔high contrast
✔✔long scale contrast - ✔✔low contrast
✔✔sharpness is influenced by - ✔✔Focal spot size, film composition, movement
✔✔image appears fuzzy - ✔✔penumbra
✔✔longer PID - ✔✔less image magnification
✔✔shorter PID - ✔✔more image magnification
✔✔vertical angulation - ✔✔results in elongation
✔✔invented paralleling technique - ✔✔Fitzgerald
✔✔strongest binding orbit - ✔✔K
✔✔Determine the energy and penetrating power of radiation - ✔✔wavelengths
, ✔✔Tube head seal - ✔✔aluminum or leaded glass covering that permits exit of x-rays.
✔✔restricts the size of the x-ray beam - ✔✔lead collimator
✔✔ideal collimation - ✔✔rectangular
✔✔silver halide crystals - ✔✔Absorb radiation during x-ray exposure and store energy
from the radiation
✔✔ALARA - ✔✔As Low As Reasonably Achievable
✔✔Regulates the temperature at the cathode filament - ✔✔mA
✔✔Stochastic - ✔✔direct function of dose
✔✔Somatic cells include reproductive - ✔✔false
✔✔inherent filtration - ✔✔primary beam passes through the glass window of the xray
tube, the insulating oil and the tube head
✔✔which type of collimation is best - ✔✔rectangular
✔✔MPD - ✔✔maximum permissible dose
✔✔Film emulsion - ✔✔increases sensitivity to x radiation
✔✔Amalgam fillings appear ___ on processed films - ✔✔radiopaque
✔✔time___ affects contrast - ✔✔does not
✔✔Forshortening - ✔✔excessive vertical angulation, tooth is shortened
✔✔order for taking posterior PA - ✔✔premolar then molar
✔✔manual film processing steps - ✔✔development, rinsing, fixation, washing, and
drying
✔✔rinsing - ✔✔removes developer and stops the development process
✔✔fixation - ✔✔removes unexposed silver halide crystals, emulsion is hardened
✔✔light leaks in a dark room will cause - ✔✔fogged films
