click below
click below
Normal Size Small Size show me how
Equipment/Film/Proce
Dental Radiography -- Principles and Techniques
Question | Answer |
---|---|
Film Base | flexible piece of plastic provide support and strength |
Adhesive Layer | thin layer of adhesive material that covers both sides of the film base attaches the emulsion to the base |
Film Emulsion | Coating attached to both sides of film base homogenous mixture of gelatin and silver halide crystals |
X-ray Film | dbl emulsion film, requires less radiation to produce image |
Lead Foil Sheet | located behind film to shield the film from backscattered radiation |
Development | reduce exposed silver halide crystals into black metallic silver developer sol. softens emulsion during this process |
Rinsing | removes developer from film and stop dveelopment process |
Fixing | remove unexposed silver halide crystals from film emulsion hardens film emulsion |
Developer Sol. | weakened sol. does not fully develop the latent image and produces a nondiagnostic radiograph w reduced density and contrast |
Fixer Sol. | dilution weakens the sol. |
Underdeveloped Film | - light - depleted developer sol. - not enough development time - developer sol. too cool |
Overdeveloped Film | - Dark - too much developing time - sol. too hot - concentrated developer sol |