Dental chapter 22 key terms

Automatic Processing

Processing of dental x-rays using automatic equipment.

Bisecting technique

X-ray technique that applies the geometric principle in which the central ray bisects the angle formed by the dental film and the long axis of the tooth.

Bite-wing radiograph

Intraoral radiograph that shows the maxillary and mandibular crowns in occlusion.

Blurred image

Images on x-ray film that out of focus.

Cone cutting

Partial image created when the central beam misses the x-ray film.

Developer solution

The first chemical solution used to process radiographs.

Double exposure

A technique error in which film was exposed twice.

Duplication technique

A technique whereby dental radiographs are reproduced on specialized film.

Elongation

A techinque error that elongates the image of the teeth.

Fixer solution

The second chemical solution used to process radiographs.

Foreshortening

A technique error whereby the image of the teeth is shortened.

Herringbone pattern

Across pattern that appears on film that has been placed backward in the mouth; caused by the pattern on the lead foil.

Horizontal angulation

Adjustment of angulation from left to right; improper angulation shows overlapping teeth.

Interproximal

Radiographs; also known as bite-wing radiographs.

Manual processing

Processing dental x-rays using a manual tank with developer, running water, and fixer.

Occulsal radiograph

Radiographs that expose the maxillary or mandibular occulsal surface of the dental arch.

Overlapping

X-ray technique error resulting from improper herizontal angulation.

Paralleling technique

X-ray technique, also known as the right angle technique , whereby the film and tooth and PID are parallel.

Periapical radiograph

Pictures the entire tooth and surrounding area.

Quality radiograph

A radiograph that shows all structures in a manner that makes assessment and diagnosis efficient and clear.

Radiopaque

White or light region on the x-ray indicating where radiation was blocked by tissue or a substance.

Reticulation

Processing error that shows on the dental film when the film emulsion is exposed to extreme temperature variations; normally shows as pitting or wrinkling of the emulsion.

Underexposed

When the x-ray film appears light and has a thin image.

Vertical angulation

Adjustment of angulation from top to bottom; improper vertical angulation shows teeth elongated or foreshortened.