discuss one type of x-ray radiation at the dentist
Ans) There are two main types of dental x-rays: intraoral (the x-ray film is inside the mouth) and extraoral (the x-ray film is outside the mouth).
- Intraoral x-rays are the most common type of x-ray. There are several types of intraoral x-rays. Each shows different aspects of teeth.
- Bite-wing x-rays show details of the upper and lower teeth in
one area of the mouth. Each bite-wing shows a tooth from its crown
(the exposed surface) to the level of the supporting bone.
Bite-wing x-rays detect decay between teeth and changes in the
thickness of bone caused by gum disease. Bite wing x-rays can also
help determine the proper fit of a crown (a cap that completely
encircles a tooth) or other restorations (eg, bridges). It can also
see any wear or breakdown of dental fillings.
- Periapical x-rays show the whole tooth — from the crown, to
beyond the root where the tooth attaches into the jaw. Each
periapical x-ray shows all teeth in one portion of either the upper
or lower jaw. Periapical x-rays detect any unusual changes in the
root and surrounding bone structures.
- Occlusal x-rays track the development and placement of an entire
arch of teeth in either the upper or lower jaw.
- Extraoral x-rays are used to detect dental problems in the jaw
and skull. There are several types of extraoral x-rays.
- Panoramic x-rays show the entire mouth area — all the teeth in
both the upper and lower jaws — on a single x-ray. This x-ray
detects the position of fully emerged as well as emerging teeth,
can see impacted teeth, and help diagnosis tumors.
- Tomograms show a particular layer or “slice” of the mouth and
blur out other layers. This x-ray examines structures that are
difficult to clearly see because other nearby structures are
blocking the view.
- Cephalometric projections show an entire side of the head. This
x-ray looks at the teeth in relation to the jaw and profile of the
individual. Orthodontists use this x-ray to develop each patient’s
specific teeth realignment approach.
Another test that uses x-rays is called a sialogram. This test uses
a dye, which is injected into the salivary glands so they can be
seen on x-ray film (Salivary glands are a soft tissue that would
not be seen with an x-ray.) Dentists might order this test to look
for salivary gland problems, such as blockages, or Sjogren’s
syndrome (a disorder with symptoms including dry mouth and eyes;
this disorder can play a role in tooth decay).
Dental computed tomography (CT) is a type of imaging that looks at
interior structures in 3-D (three dimensions). This type of imaging
is used to find problems in the bones of the face such as cysts,
tumors, and fractures.
Cone Beam CT is a type of x-ray that creates 3-D images of dental
structures, soft tissue, nerves, and bone. It helps guide tooth
implant placement and evaluates cysts and tumors in the mouth and
face. It also can detect problems in the gums, roots of teeth, and
jaws. Cone beam CT is similar to regular dental CT in some ways.
They both produce accurate and high quality images. However, the
way images are taken is different. The cone-beam CT machine rotates
around the patient’s head, capturing all data in one single
rotation. The traditional CT scan collects “flat slices” as the
machine makes several revolutions around the patient’s head. This
method also exposes patients to higher level of radiation. A unique
advantage of cone beam CT is that it can be used in a dentist’s
office. Dental computed CT equipment is only available in hospitals
or imaging centers.
Digital imaging is a 2-D type of dental imaging that allows images
to be sent directly to a computer. The images can be viewed on
screen, stored, or printed out in a matter of seconds. Digital
imaging has several other advantages compared with traditional
x-rays. The image taken of a tooth, for example, can be enhanced
and enlarged. This makes it easier for your dentist to see the
tiniest changes that can’t be seen in an oral exam. Also, if
necessary, images can be sent electronically to another dentist or
specialist for a second opinion or to a new dentist (eg, if you
move). Digital imaging also uses less radiation than x-rays.
- MRI imaging is an imaging method that takes a 3-D view of the
oral cavity including jaw and teeth.
this is for dental hygiene pls help this for dental hygiene its, not for nursing Discuss one of type of x-ray radiation. Tell us about x-rays you have had and how you were protected from scatter radiation.
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Tell us about x-rays you have had at the dentist and how you were protected from scatter radiation.
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