What causes film fog on radiographs?

Fogging may be due to many factors including: * Using film kept past its expiration date. Unexposed film may become fogged by gradual chemical deterioration, which is temperature dependent and therefore may be slowed by storing film in a refrigerator. * Film exposed to stray radiation during storage.

What are some common problems due to improper film storage and handling such as storage or artifacts?

Improper exposure setting, excessive scatter radiation reaching the film, fogged film, and poor processing can all result in poor contrast.

What type of film is used for dental radiography?

The film typically used for the intraoral bitewing exam falls into three film speed classes – D (slowest), E and F-speed (fastest). Like photographic film, the faster the film, the less exposure it needs. Film speed can be an important aspect in determining the amount of radiation exposure received by a patient.

What is the appearance of the most common dental image technique errors?

PROJECTION GEOMETRY. One of the most common errors when exposing bitewing images is failing to prevent horizontal overlapping. Horizontal overlap is a result of the X-ray beam not passing through the open interproximal area at right angles to a properly positioned detector.

Are there any errors in dental radiography films?

1. Prepared by : WRia S. Rasheed 2. I. Technique & Projection errors. II. Exposure errors. III.Processing errors. 3. Films with errors should be avoided due to the following reasons: Retake will lead to: •Expose the patient to unnecessary radiation.

Why are the lines on a dental radiograph black?

Processing errors Film Handling errors Writing lines Appear on the radiograph due to writing on the film packet with ballpoint pen or lead pencil. It may appear black or white. Finger nail artifact Black or whit crescent shape mark due to rough handling of the film. 34.

Which is worse operator error or no radiograph?

Operator error is responsible for the majority of retakes of dental radiographs. An undiagnostic radiograph is worse than no radiograph at all due to the increased radiation to the patient. Operator error can occur either while exposing or processing films, and is due to using incorrect or improper techniques.

What are the causes of a faulty radiograph?

Causes of faulty radiograph The majority of the errors produced can be categorized into three groups: I. Technique & Projection errors. II. Exposure errors. III.Processing errors.