Transcript intra oral x ray films

INTRA ORAL X RAY
FILMS
M. Malik Afroz
FORMAT
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INTRODUCTION
HISTORY
CLASSIFICATION OF FILMS
COMPOSITION OF FILMS
CONCLUSION
SPECIFIC LEARNING OBJECTIVE
 To know about the different types of films
 Composition of films.
Introduction
 X ray films are thin sheet
of cellulose acetate or
similar materials coated
with light sensitive
emulsion.
 Emulsion :- is a colloidal
dispersion of one liquid
in another.
 X ray films act as image
receptors.
History
 WILHELM CONRAD
ROENTGEN 08-111895
 1st film was used in 28-
12-1895
 Dr EDMUND KULL
took 1st dental
radiograph 4 months
after Roentgens
discovery.
Requirements
1. Should have adequate flexibility
2. It must withstand exposure to processing
solution without being distorted.
3. Should have a good shelf life
4. No additional equipments needed for
storage
5. Should be uniformly translucent.
CLASSIFICATION
1. Based On There Usage
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Intraoral Films
Extra Oral Films
2. Based On There Exposure
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Direct Exposure Films
Indirect Exposure Films
3. Based On There Size
4. Based On There Speed
Intra Oral Films Or Direct
Exposure
1. Intra Oral Peri – Apical x Ray Film (IOPA)
 Size 0
Size 1
Size 2
22x35mm
24x40mm
2. Bitewing X Ray Film
 Size 1
Size 2
24x40mm
31x41mm
3. Occlusal X Ray Film
 55x76mm
31x41mm
Speed of the Film
 A speed
 B speed
 C speed
 D speed
 E speed
 F speed
Types
Size 2 – X Ray Film
Bite Wing X Ray Film
Size 0 – X Ray Film
Occlusal X Ray Film
Back Side of Size 2; Size 0 and Occlusal
Radiograph
Composition
Base
1.
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0.2mm thick
Polyester Polyethylene
Teraphthalate
Emulsion
2.
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Silver Halide Grains
Vehicle Matrix.
Silver Halide Grains
1. Silver Bromide
2. Silver Iodide
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Iodide added to
increase sensitivity.
Gold is also added
E films Tabular grain 1.6
um
D film globular grains
1um
Vehicle Matrix
 Gelatinous
 Non Gelatinous
 Made of cattle bone.
 Function – Keep silver halide grains evenly
dispersed.
 Application on x ray film –
 Applied on both sides
 Supercoating
Film Packet Contents
 Plastic Cover
 Black Wrapping Paper
 X ray Film
 Black Wrapping Paper
 Lead Foil.
Thank You
 Any questions ?