Texas RDA Exam Review Graded A+
developing solution - ANSWER-develops the silver halide crystals that were exposed to
x-rays and contain the latent image
dirtiest part of the body - ANSWER-under the fingernails
display of registration - ANSWER-dental asisstant shall display a current registration
certificate in each office where the dental asisstant provides services for which
registration is required
Exposing x-rays - new hire - ANSWER-dental assistant may work in a dental office w/o
license but not take/expose x-rays
from initial hire date you have up to 12 mo to without license
exposure errors- darker - ANSWER-excessive mA, exposure time to long , kVp too high
exposure errors- lighter - ANSWER-exposure time to short,
kVp too low, incorrect film time
Extraoral radiographs - ANSWER-panoramic- gives overall view of the mandible and
maxilla. detects lessions in the jaw/pathology. locates impacted teeth, and trauma
cephalometric- shows major functional skeletal structures and relation to each other.
used to measure and evaluate dentofacial proportions
fear of radiations - ANSWER--high perceived risk but low actual risk
-using x-rays to diagnose problems outweighs the low risk
-doctor can not give a complete exam without x-rays
film emulsion speed - ANSWER-the size of the crystals determines the film speed.
film sizes are numbered from 0-4
fixing solution - ANSWER-removes the unexpected silver halide crystals
Hepatitis B Vaccine - ANSWER-offered to all employees with exposure to blood.
within 10 days of starting work
Housekeeping surfaces - ANSWER-soap and water or EPA registered hospital
disinfectant
Incorrect tubehead alignment resulting in cone-cutting of image - ANSWER-exposure
error
Incorrect vertical angulation - ANSWER-Foreshortening- caused by excessive vertical
angulation
developing solution - ANSWER-develops the silver halide crystals that were exposed to
x-rays and contain the latent image
dirtiest part of the body - ANSWER-under the fingernails
display of registration - ANSWER-dental asisstant shall display a current registration
certificate in each office where the dental asisstant provides services for which
registration is required
Exposing x-rays - new hire - ANSWER-dental assistant may work in a dental office w/o
license but not take/expose x-rays
from initial hire date you have up to 12 mo to without license
exposure errors- darker - ANSWER-excessive mA, exposure time to long , kVp too high
exposure errors- lighter - ANSWER-exposure time to short,
kVp too low, incorrect film time
Extraoral radiographs - ANSWER-panoramic- gives overall view of the mandible and
maxilla. detects lessions in the jaw/pathology. locates impacted teeth, and trauma
cephalometric- shows major functional skeletal structures and relation to each other.
used to measure and evaluate dentofacial proportions
fear of radiations - ANSWER--high perceived risk but low actual risk
-using x-rays to diagnose problems outweighs the low risk
-doctor can not give a complete exam without x-rays
film emulsion speed - ANSWER-the size of the crystals determines the film speed.
film sizes are numbered from 0-4
fixing solution - ANSWER-removes the unexpected silver halide crystals
Hepatitis B Vaccine - ANSWER-offered to all employees with exposure to blood.
within 10 days of starting work
Housekeeping surfaces - ANSWER-soap and water or EPA registered hospital
disinfectant
Incorrect tubehead alignment resulting in cone-cutting of image - ANSWER-exposure
error
Incorrect vertical angulation - ANSWER-Foreshortening- caused by excessive vertical
angulation
