What are the three methods of film processing?

Film processing, whether it is manual or automatic, comprises five basic steps: (1) developing, (2) rinsing or stop bath, (3) fixing, (4) washing, and (5) drying. The first step in learning how to process a film is a basic understanding of the processing solutions.

What is a dental film processor?

X-ray film processing includes developing, rinsing, fixing, washing and drying of the exposed film. Merry X-Ray supports film processing by offering film, chemistry, parts and service. …

What is the chemical in the fixer that clears the unexposed silver halide crystals?

Hydroquinone
The purpose of the developing agent is to reduce the exposed silver halide crystals chemically to black metallic silver. Hydroquinone is a benzene derivative and acts at slowrate but generates the black tones and the sharp contrast of the radiographic image.

What are the two most common extraoral films?

An extraoral film is one that is placed outside the mouth during x-ray exposure. Extraoral films are used to examine large areas of the head or jaws. Examples of common extraoral films include panoramic and cephalometric films.

What is the 6th step of film processing?

6. Pre-wash the film. This part is crucial so to avoid any air bubbles that may form on your film. Place your developing tank in the sink to pre-wash your film (make sure that the water is room temperature or close).

What are the five steps in processing dental radiographs?

Five Steps in Processing Dental Radiographs:

Development.
Rinsing.
Fixation.
Washing.
Drying.

How are dental films processed?

Manual processing is a method that is used to develop, rinse, fix, and wash dental x-ray films. The essential piece of equipment required for manual processing is a processing tank. The processing tank is divided into compartments to hold the developer solution, water bath, and fixer solution.

What is xray developer?

An x-ray developer is a special solution that is used to develop latent images to visible ones in the darkroom during radiography. X-ray developer is composed of hydroquinone and phenidone (Metol). Sodium sulfite is used to preserve the developer by reducing the latter’s oxidation rate.

What does the fixer solution do to the film?

The fixer stabilises the image, removing the unexposed silver halide remaining on the photographic film or photographic paper, leaving behind the reduced metallic silver that forms the image. By fixation, the film or paper is insensitive to further action by light.

When film is fixed what happens to the unexposed silver particles?

4. FIXING. The acidic fixing solution removes the unexposed and undeveloped silver bromide crystals from the film emulsion and re-hardens the emulsion that has softened during the development process.

What is the difference between a PA and a bitewing?

Bitewing X-rays show details of the upper and lower teeth in one area of the mouth. 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.

What is considered a extraoral film?

There are two main types of dental X-rays: intraoral (meaning the X-ray film is inside the mouth) and extraoral (meaning the X-ray film is outside the mouth). Intraoral X-rays are the most common type of dental X-ray taken. Extraoral X-rays show teeth, but their main focus is the jaw and skull.