Dental radiography equipment

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Dental radiography equipment

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Intraoral dental film

Function image

To capture the image of teeth in the radiographic process

Characteristics image

1. Outside covering of film—Soft plastic or paper (both waterproof)
2. Sheet of lead foil to stop the radiation from extending beyond the film
3. Black paper to protect the film from light penetration
4. Film—Single or double film
Film speed indicated on each packet—Set by American National Standards Institute (ANSI)
Film speed A through F—D, E, F used intraorally
Faster speed of the film reduces the amount of radiation exposure; F speed is faster than D speed.
Film speed determines amount of radiation needed to produce a quality radiograph—Settings are on x-ray unit.

Practice note image

Intraoral Dental Film is used in all phases of dentistry.

 

imageFollow standard precautions and cross-contamination protocol when exposing and processing film for developing. Outer packet and black paper may be disposed of in the garbage. Correct disposal of lead foil must be checked within your state. In some states, lead foil is considered a hazardous waste and must be collected and disposed of properly. For proper recycling protocol, refer to Department of Environmental Health regulations in the state where you practice.

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Photos courtesy Carestream Health Inc., Rochester, NY.

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Package of dental film

Function image

To package intraoral dental film

Characteristics image

Box labeled:

• Type of film
• Film speed
• Number of films in individual film packet
• Number of film packets in the box
• Expiration date of film
Film packets—Single or double film

Practice notes image

Each film has an identification dot (raised bump). Concave on one side and convex on the other. Convex/bump faces toward the teeth when placing the film.
Film storage is important to the integrity of the film. Refer to package instructions for storage recommendations.

 

imageFollow standard precautions and cross-contamination protocol when processing film for developing. Outer packet and black paper may be disposed of in the garbage. Correct disposal of lead foil must be checked within your state. In some states, lead foil is considered a hazardous waste and must be collected and disposed of properly. For proper recycling protocol, refer to Department of Environmental Health regulations in the state where you practice.

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Intraoral dental film—various sizes

Functions image

To project the patient’s teeth through x-ray onto the film
To use for intraoral and extraoral projections

Characteristics image

Commonly taken images—Front and back view
Size #0—Used on children younger than 3 years (not pictured)
1. Size #1—Used for anterior periapical image (narrow view)
2. Size #2—Used for periapical and bite-wing image

Size #3—Used for extended bitewing projections
3. Size #4—Used for occlusal projections; used to view maxillary and mandibular teeth; commonly used on children

Practice note image

Smooth side of the film (the raised-dot side—convex) faces the tube or position indicating device (PID). Raised dot should be toward the occlusal or incisal.

 

imageFollow standard precautions and cross-contamination protocol when exposing and processing film for developing. Outer packet and black paper may be disposed of in the garbage. Correct disposal of lead foil must be checked within your state. In some states, lead foil is considered a hazardous waste and must be collected and disposed of properly. For proper recycling protocol, refer to Department of Environmental Health regulations in the state where you practice.

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Product photo courtesy Carestream Health Inc., Rochester, NY.

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Extraoral dental film—cephalometric and panoramic

Functions image

To project the patient’s teeth through x-ray onto the film
Used for extraoral projections

Characteristics image

Film is placed in a cassette outside the mouth.
1. Cephalometric radiograph—Shows bony and soft-tissue areas of the facial profile
2. Panoramic radiograph—Shows a panoramic image of maxillary and mandibular teeth on one projection

Practice notes image

Different styles of extraoral x-ray units are available.
Cephalometric and panoramic radiographs are used in all phases of dentistry. Panoramic radiographs are used frequently in orthodontics.

 

imageFollow standard precautions and cross-contamination protocol when exposing and processing film for developing.

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Bite-wing tabs

Function image

To take a bite-wing projection

Characteristics image

Stick-on or slip-on tab
Tab or wing is placed on the occlusal, and patient bites on the tab to secure the film

Practice notes image

Slip-on tabs are available in different sizes to accommodate different-sized film.
Size #2 film is used for adult bite-wing image.
Bite-wing images are mainly used for diagnosing caries on proximal surfaces (mesial and distal) of the posterior teeth.
Four bite-wings are usually taken on adult dentition—One premolar and one molar projection on each side of the mouth.

 

imageFollow standard precautions and cross-contamination protocol when exposing and processing film. Outer packet, black paper, and Bite-Wing Tabs may be disposed of in the garbage. Correct disposal of lead foil must be checked within your state. In some states, lead foil is considered a hazardous waste and must be collected and disposed of properly. For proper recycling protocol, refer to Department of Environmental Health regulations in the state where you practice.

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Film holder—periapical (eezee-grip)

Function image

To position and hold film in patient’s mouth for periapical images

Characteristics image

Double ended:

One end holds film for posterior teeth projection, as shown
Opposite end holds film for anterior teeth projection

Practice notes image

Size #2 film is used for posterior periapical image.
Size #1 or size #2 is used for anterior periapical image.
Periapical images are used for viewing the coronal part of the tooth, root, apex, and surrounding bone and tissue.
EeZee-Grip formerly called Snap-a-ray.

 

imageEeZee-Grip Film Holder must be cleaned, bagged individually, and then sterilized. A chemical/steam indicator device should be included in the wrapping.

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Photos courtesy DENTSPLY Rinn, Elgin, IL.

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Holder for digital sensor (eezee-grip)

Function image

To position and hold a digital sensor in patient’s mouth for periapical images

Characteristics image

Double ended:
1. Holds film for anterior teeth projection
2. Holds film for posterior teeth projection
Designed for snug fit to prevent slipping

Practice notes image

Holder allows room for the wire attached to the sensor.
May be used with wireless digital sensor.

 

imageFollow standard precautions and cross-contamination protocol when taking digital images. Holder must be cleaned, bagged individually, and then sterilized. A chemical/steam indicator device should be included in the wrapping.

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Film holders—periapical

Functions image

To position and hold a film in patient’s mouth for periapical image
To allow patient to bite on holder to keep film in place while positioning the position indicating device (PID) and exposing the film

Characteristics image

1. Holds film for anterior teeth projection—Plastic that can be sterilized
2. Holds film for posterior teeth projection—Plastic that can be sterilized
3. Holds film for anterior and posterior projection—Disposable Styrofoam
Slot holds film in place

Practice note image

Periapical images are used for viewing the coronal part of the tooth, root, apex, and surrounding bone and tissue.

 

imagePlastic Film Holders must be cleaned, bagged individually, and then sterilized. A chemical/steam indicator device should be included in the wrapping. Disposable Styrofoam holder may be disposed of in garbage.

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Photos courtesy DENTSPLY Rinn, Elgin, IL.

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Film holders—xcp

Functions image

To position and hold a film in patient’s mouth for periapical and bite-wing images using parallel technique
To allow patient to bite on holder to keep film in place while positioning the position indicating device (PID) and exposing the film

Characteristics image

1. Blue—Anterior teeth projection
2. Red—Bite-wing projection
3. Yellow—Posterior teeth projection
4. Green—Projections for endodontic procedures
Slot holds film in place

Practice notes image

XCP uses the parallel technique for exposing radiation to the film.
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Feb 3, 2015 | Posted by in Dental Hygiene | Comments Off on Dental radiography equipment

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