Table of Contents
What is radiographic film interpretation?
Interpretation of radiographs takes place in three basic steps: (1) detection, (2) interpretation, and (3) evaluation. All of these steps make use of the radiographer’s visual acuity. Visual acuity is the ability to resolve a spatial pattern in an image.
Why is radiographic interpretation important?
Refining their diagnostic skills and knowledge of anatomy will help clinicians recognize the most common variations in normal radiographs — as well as the most frequently encountered incidental findings.
Can a dental hygienist interpret radiographs?
Even though the 2008 Dental Hygiene Standards of Practice1 suggests dental hygienists expose, process, and interpret dental radiographs, the dentist is called upon as the person in the dental practice with the authority to interpret them.
What does OPG mean in dentistry?
The orthopantomogram (also known as an orthopantomograph, pantomogram, OPG or OPT) is a panoramic single image radiograph of the mandible, maxilla and teeth.
What does lack of fusion look like?
The lack of fusion is a planar defect. It may appear at the edge of the parent metal or between runs. The lack of fusion between the parent metal and the weld metal shows a flat face. The lack of inter-run fusion, however, shows an irregular shape.
Which is the benefit of a double emulsion film?
It has some advantages of availability, less radiation dose and cost in comparison to computed tomography (CT) and cone beam CT. Double emulsion film usually used for taking tomograms requires less exposure than single emulsion film; on the other hand, the latter provides more sharpness and spatial resolution.
What is the difference between radiopaque and radiolucent?
Radiolucent – Refers to structures that are less dense and permit the x-ray beam to pass through them. Radiopaque – Refers to structures that are dense and resist the passage of x-rays. Radiopaque structures appear light or white in a radiographic image.
How would you describe a dental radiograph?
Dental X-rays (radiographs) are images of your teeth that your dentist uses to evaluate your oral health. These X-rays are used with low levels of radiation to capture images of the interior of your teeth and gums. This can help your dentist to identify problems, like cavities, tooth decay, and impacted teeth.
Do dental hygienists do xrays?
Dental hygienist also often take x-rays. Many offices now use new x-ray machines that can take a full series of images in just a few minutes. Dental hygienists can also take impressions of individual teeth or a group of teeth for making implants, dentures and other oral appliances.
Do hygienists do xrays?
Dental hygienists are experts in all aspects of preventative dental care and treatment of gum disease. They can show you proper home habits and help you keep your gums and teeth healthy. Dental hygienists also perform X-rays, which the dentist uses to assess problems and decide on treatments.
Can dental hygienist work without dentist?
The majority of dental hygienists will, of course, work for a dental practice, but the improvements in oral health will be much greater if dental hygienists are clearly released to work in a range of community settings without a dentist being present, as is understood under the current standard.
What can you see on an OPG?
An OPG is a panoramic or wide view x-ray of the lower face, which displays all the teeth of the upper and lower jaw on a single film. It demonstrates the number, position and growth of all the teeth including those that have not yet surfaced or erupted.
What can an OPG show?
OPGs are an amazing diagnostic tool for detecting irregular teeth, cysts, tumors and infections. Back in the day, a dentist would place a small flexible object in your mouth and proceed to take an X-ray so they could look at a specific tooth that was causing a person concern.
How do you read a dental OPG?
One method would be: Count all teeth present and their positions, noting missing or misplaced teeth. Follow the contours of the mandible from right (left side of the image) to left, noting condylar head size/shape, continuity of external border of the ramus and body, and uniformity of the internal density of the bone.
How do you fix a lack of fusion?
Remedial action will normally require their removal by localised gouging, or grinding, followed by re-welding as specified in the agreed procedure. If lack of fusion is a persistent problem, and is not caused by magnetic arc blow, the welding procedures should be amended and/or the welders retrained.
What do you mean by lack of fusion?
LACK OF FUSION Lack of fusion, also called cold lapping or cold shuts, occurs when there is no fusion between the weld metal and the surfaces of the base plate. When this is done, the weld puddle will not get too large and cannot cushion the arc. Another cause is the use of a very wide weld joint.
How can lack of fusion be prevented?
It is possible to take steps to reduce the risk of lack of fusion. The usual solution for lack of fusion is to increase your mean current, improving your operating technique or choose shielding gases that provide a more fluid weld pool. Make sure your joint or root are well prepared and not too narrow to weld evenly.
What is double emulsion?
Double emulsions are liquid dispersion systems known also as emulsions of emulsions, in which the droplets of one dispersed liquid (emulsion, microemulsion, liposome, etc) are further dispersed in another liquid (water or oil), producing double layered liquid droplets.
How latent image is formed?
A latent image is an invisible image produced by the exposure to light of a photosensitive material such as photographic film. When photographic film is developed, the area that was exposed darkens and forms a visible image. If intense exposure continues, such photolytic silver clusters grow to visible sizes.
What is single coated film?
Single coated: In such type of x-ray films the photosensitive emulsion is coated only on one surface of film base. These films are used with single intensifying screen cassette with the film placed in front of the screen, i.e. on the side facing the X-ray tube.
