The cause of an excessive margin of film edge (which appears as a black band) on a nondiagnostic periapical film is:
A) The edge of the film was not placed parallel to the incisal-occlusal surfaces of the teeth.
B) The film was not positioned in the patient's mouth to cover the apical regions of the teeth.
C) The film was underexposed.
D) The central ray was not directed through the interproximal spaces.
Correct Answer:
Verified
Q13: To avoid overlapped contacts on periapical film:
A)
Q14: With _, images appear stretched and distorted.
A)
Q15: The possibility of exposure of radiographic film
Q16: An underexposed film results from:
A) Insufficient exposure
Q17: To correct a film where apices do
Q19: The appearance of a patient's finger on
Q20: Long, distorted teeth appear on the film
Q21: What is the cause of a double
Q22: Blurred images appear on the film when:
A)
Q23: When the film is reversed, the image
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