Dental Radiology final exam with correct answers 2024
4 views 0 purchase
Course
Dental Radiology fin
Institution
Dental Radiology Fin
1) All ionizing radiations are harmful and produce biologic changes in living tissue. 2) The amount of radiation used in dental radiography is small, but biologic damage does occur. correct answers a. Both statements are true.
1) Density is the overall darkness or blackness of a film. 2) When t...
1) All ionizing radiations are harmful and produce biologic changes in living tissue. 2)
The amount of radiation used in dental radiography is small, but biologic damage does
occur. correct answers a. Both statements are true.
1) Density is the overall darkness or blackness of a film. 2) When the kilovolt peak is
increased while other exposure factors remain constant, the resultant film exhibits a
decreased density and appears lighter. correct answers c. The first statement is true;
the second statement is false.
1) Radiation is the emission and propagation of energy through space or a substance in
the form of waves or particles. 2) Radioactivity can be defined as the process by which
certain unstable atoms or elements undergo spontaneous disintegration, or decay, in an
effort to attain a more balanced nuclear state. correct answers a. Both statements are
true.
According to the basic principles of the paralleling technique, the film is placed in the
mouth _____ to the long axis of the tooth being radiographed, and the central ray of the
x-ray beam is directed _____ to the film and long axis of the tooth. correct answers a.
parallel; perpendicular
According to the text, "_____ is one of the most important uses of dental radiographs."
correct answers b. detection
A cone cut occurs when: correct answers c. The PID was not properly aligned with the
periapical film holder.
All crowns and roots of the first, second, and third molars, including the apices, alveolar
crests, contact areas, surrounding bone, and tuberosity region, must be seen on the
_____ radiograph. correct answers b. maxillary molar
Aluminum filters are used to remove _____-energy, _____ wavelength x-rays. correct
answers a. low; longer
An underexposed film results from: correct answers a. Inadequate exposure time
An unexposed film appears: correct answers a. Clear
A radiograph is defined as: correct answers b. A picture on film produced by the
passage of x-rays through an object or body.
A radiograph should not be referred to as a(n): correct answers c. X-ray
, A radiograph that has _____ is said to have high contrast. correct answers d. very dark
areas and very light areas
Because metallic restorations absorb x-rays, the area of the film that corresponds to
their location remains unexposed, and the metallic restorations appear completely
_____ on a dental radiograph. correct answers c. radiopaque
Cellular injuries following the latent period may include (1) cell death, (2) cessation of
mitotic activity, and/or (3) abnormal mitotic activity. correct answers a. 1, 2, 3
Dental caries appears _____ because the area of the tooth with caries is _____ dense
than surrounding structures. correct answers d. radiolucent; less
Electromagnetic radiations: correct answers b. Include x-rays and visible light.
Elongated images refer to images of the teeth that appear _____. Elongation of images
results from _____ vertical angulation. correct answers b. too long; insufficient
Exposed films should _____ dried and then placed in a _____ for transport to the
darkroom for processing. correct answers d. be; disposable container
Exposure time is measured in: correct answers d. Impulses
For the premolar bite-wing exposure, the PID is positioned far enough forward to cover
both maxillary and mandibular: correct answers canines
Horizontal angulation refers to the placement of the position-indicating device (PID) in
a/an _____ plane. Vertical angulation refers to the positioning of the PID in a/an _____
plane. correct answers b. side-to-side; up-and-down
In dental radiography, no _____ are used.
1.critical instruments2.semicritical instruments3.noncritical instruments correct answers
1 only
In dental radiography, the term _____ is used to describe the mean energy or
penetrating ability of the x-ray beam. correct answers quality
Informed consent: correct answers a. Must be in language that the patient can readily
understand
Inherent filtration in the dental x-ray tubehead: correct answers a. Includes filtration that
takes place when the primary beam passes through the glass window of the x-ray tube,
the insulating oil, and the tubehead seal.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller HopeJewels. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
