Double exposure dental radiography1/20/2024 ![]() ![]() ![]() ![]() 20-6) Appearance No apices appear on the film Cause The film was not positioned in the patient’s mouth to cover the apical regions of the teeth Correction Make certain no more than 1/8th inch of the film edge extends beyond the incisal-occlusal surfaces of the teethġ8 Improper film placement no apices appear on this film The film was underexposed Correction Check the exposure time, kilovoltage, and milliamperage settings on the x-ray machine before exposing the filmįilm Placement Problems Correct film placement Incorrect film placement Absence of apical structures Dropped film corner Angulation Problems Incorrect horizontal angulation Incorrect vertical angulation PID Alignment Problems Cone-cut with Film Holder Cone-cut without Film HolderĮach periapical film must be positioned in a certain way to show specific teeth and related anatomic structures The edge of the periapical film must be placed parallel to the incisal or occlusal surfaces of the teeth and extend 1/8th inch beyond the incisal or occlusal surfacesġ6 Correct periapical film placement demonstrates the entire tooth, including the apex and surrounding structures The film appears black Cause The film was exposed to white light Correction Do not unwrap in a room with white light Check the darkroom for light leaks Turn off all lights in the darkroom except the safelightġ0 Overexposed Film Appearance Cause Correction Film appears darkĮxcessive exposure time, kilovoltage, milliamperage Correction Check settings and reduce as needed before exposing filmġ2 Underexposed Film Appearance Cause Correction The film appears light Unexposed film Film exposed to light Time and Exposure Factor Problems Overexposed film Underexposed filmĦ Unexposed Film Appearance The film appears clear Causeįailure to turn on the x-ray machine Electrical failure Malfunction of the x-ray machine Correction Make certain the x-ray machine is turned on and listen for the audible exposure signalĨ Film Exposed to Light Appearance Cause Correction Purpose To describe film exposure problems and periapical, bite-wing, and miscellaneous technique errors Technique errors (periapical films) Technique errors (bite-wing films) Miscellaneous technique errors What film exposure and technique errors may be observed on dental radiographs? What horizontal and vertical angulation errors may be observed on dental radiographs? What is the proper film placement for bite-wing radiographs?ģ Dental Radiography Exposure and Technique Errors Film exposure errors ![]()
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