DAS 130 FINAL Questions and Correct Detailed
Answers (Verified Answers) ||Already Graded
A+||Newest Version
Quiz: X-rays were discovered by:
Ans: Wilhelm Roentgen
Quiz: Which of the following was Otto Walkhoff's contribution to dental
radiography?
Ans: He made the first dental radiograph.
Quiz: Which of the following was the most recent development in the history
of dental x-ray equipment?
Ans: Introduction of a recessed long-beam tubehead.
Quiz: Current, fast film requires less than __% of the initial exposure times
used for dental radiography in 1920.
Ans: 2
o
o
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, Quiz: The long-cone paralleling technique was introduced by
______________ in 1947.
Ans: F. Gordon Fitzgerald
Quiz: Cassandra is a college sophomore visiting your dental office for an
initial examination. Her dental history reveals that her dental care has been
infrequent throughout her childhood and young adulthood, and no care in the
past 18 months. Any previous dental radiographs would be long outdated.
When Cassandra is informed of the rationale and need for a current full-mouth
series, she states that she read on the Internet that dental x-rays are
unnecessary and would expose her to needless, dangerous radiation.
You explain to Cassandra that:
Ans: radiographs enable the dental professional to identify many conditions
that may otherwise go undetected and to see conditions that cannot be
identified clinically.
Quiz: Which of the following is true regarding the component parts of an
intraoral dental x-ray machine?
o
o
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, Ans: The position-indicating device (PID) extends from the tubehead opening.
Quiz: The exposure light turns ________ and the beep ______ when the x-
ray exposure is completed.
Ans: off; stops
Quiz: Beam alignment devices and collimating devices are used to indicate the
position of the _______ in relation to the tooth and the receptor?
Ans: position-indicating device (PID)
Quiz: __________ is a device used to hold and align intraoral dental x-ray
films in the mouth.
Ans: film holder
Quiz: After exposing a few radiographic images, a few of the images appear
light. You know that the exposure times were set properly, and a quick check
reveals the films have not been placed backward and the processing chemistry
are up to date. A possible solution could be:
o
o
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, Ans: make sure to hold the exposure button down until the end of the
beeping sound.
Quiz: Prior to ___________, no federal standards existed for the
manufacturer of dental x-ray machines.
Ans: 1974
Quiz: The film emulsion is composed of a homogenous mixture of
Ans: gelatin and silver halide crystals
Quiz: ___________ is the main component of the silver halide crystals in
dental x-ray film.
Ans: Bromide
Quiz: The latent image is stored by the ______________ in dental x-ray
film.
Ans: silver halide crystals
Quiz: The invisible pattern of stored energy on the exposed film is called the
o
o
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Answers (Verified Answers) ||Already Graded
A+||Newest Version
Quiz: X-rays were discovered by:
Ans: Wilhelm Roentgen
Quiz: Which of the following was Otto Walkhoff's contribution to dental
radiography?
Ans: He made the first dental radiograph.
Quiz: Which of the following was the most recent development in the history
of dental x-ray equipment?
Ans: Introduction of a recessed long-beam tubehead.
Quiz: Current, fast film requires less than __% of the initial exposure times
used for dental radiography in 1920.
Ans: 2
o
o
© 2025 TestTrackers
WhatsApp or call o Resources & Updates: [Testtrackers - Stuvia US]
o Your Success is Our Mission!
[+254707240657]
o For online exams and tutor expert, please whatsapp
me in the number given.
, Quiz: The long-cone paralleling technique was introduced by
______________ in 1947.
Ans: F. Gordon Fitzgerald
Quiz: Cassandra is a college sophomore visiting your dental office for an
initial examination. Her dental history reveals that her dental care has been
infrequent throughout her childhood and young adulthood, and no care in the
past 18 months. Any previous dental radiographs would be long outdated.
When Cassandra is informed of the rationale and need for a current full-mouth
series, she states that she read on the Internet that dental x-rays are
unnecessary and would expose her to needless, dangerous radiation.
You explain to Cassandra that:
Ans: radiographs enable the dental professional to identify many conditions
that may otherwise go undetected and to see conditions that cannot be
identified clinically.
Quiz: Which of the following is true regarding the component parts of an
intraoral dental x-ray machine?
o
o
© 2025 TestTrackers
WhatsApp or call o Resources & Updates: [Testtrackers - Stuvia US]
o Your Success is Our Mission!
[+254707240657]
o For online exams and tutor expert, please whatsapp
me in the number given.
, Ans: The position-indicating device (PID) extends from the tubehead opening.
Quiz: The exposure light turns ________ and the beep ______ when the x-
ray exposure is completed.
Ans: off; stops
Quiz: Beam alignment devices and collimating devices are used to indicate the
position of the _______ in relation to the tooth and the receptor?
Ans: position-indicating device (PID)
Quiz: __________ is a device used to hold and align intraoral dental x-ray
films in the mouth.
Ans: film holder
Quiz: After exposing a few radiographic images, a few of the images appear
light. You know that the exposure times were set properly, and a quick check
reveals the films have not been placed backward and the processing chemistry
are up to date. A possible solution could be:
o
o
© 2025 TestTrackers
WhatsApp or call o Resources & Updates: [Testtrackers - Stuvia US]
o Your Success is Our Mission!
[+254707240657]
o For online exams and tutor expert, please whatsapp
me in the number given.
, Ans: make sure to hold the exposure button down until the end of the
beeping sound.
Quiz: Prior to ___________, no federal standards existed for the
manufacturer of dental x-ray machines.
Ans: 1974
Quiz: The film emulsion is composed of a homogenous mixture of
Ans: gelatin and silver halide crystals
Quiz: ___________ is the main component of the silver halide crystals in
dental x-ray film.
Ans: Bromide
Quiz: The latent image is stored by the ______________ in dental x-ray
film.
Ans: silver halide crystals
Quiz: The invisible pattern of stored energy on the exposed film is called the
o
o
© 2025 TestTrackers
WhatsApp or call o Resources & Updates: [Testtrackers - Stuvia US]
o Your Success is Our Mission!
[+254707240657]
o For online exams and tutor expert, please whatsapp
me in the number given.
