Dental Radiography Ch. 3 Quiz
Questions with Complete Solutions
Why is it important to use proper horizontal angulation in bitewing radiography?
✔✔ To prevent overlapping of interproximal surfaces.
Why do we use a long cone technique in radiography?
✔✔ To minimize distortion and magnification.
What happens if X-rays are exposed to film for too long?
✔✔ The image becomes overexposed and too dark.
Why are digital sensors preferred over traditional film in modern radiography?
✔✔ They reduce radiation exposure and provide instant results.
What does the “inverse square law” mean in dental radiography?
✔✔ Radiation intensity decreases as distance from the source increases.
1
, Why is the aluminum filter placed in the path of the X-ray beam?
✔✔ To remove low-energy, harmful X-rays.
How does a higher kilovoltage setting affect the X-ray beam?
✔✔ It produces more penetrating and higher-energy X-rays.
What causes distortion in a radiographic image?
✔✔ Incorrect alignment of the X-ray beam, object, or receptor.
What is the term for areas on a radiograph that appear white?
✔✔ Radiopaque.
Why is it important to use lead aprons during X-ray procedures?
✔✔ To protect patients from scatter radiation.
What causes elongation in a dental radiograph?
✔✔ Using insufficient vertical angulation.
2
Questions with Complete Solutions
Why is it important to use proper horizontal angulation in bitewing radiography?
✔✔ To prevent overlapping of interproximal surfaces.
Why do we use a long cone technique in radiography?
✔✔ To minimize distortion and magnification.
What happens if X-rays are exposed to film for too long?
✔✔ The image becomes overexposed and too dark.
Why are digital sensors preferred over traditional film in modern radiography?
✔✔ They reduce radiation exposure and provide instant results.
What does the “inverse square law” mean in dental radiography?
✔✔ Radiation intensity decreases as distance from the source increases.
1
, Why is the aluminum filter placed in the path of the X-ray beam?
✔✔ To remove low-energy, harmful X-rays.
How does a higher kilovoltage setting affect the X-ray beam?
✔✔ It produces more penetrating and higher-energy X-rays.
What causes distortion in a radiographic image?
✔✔ Incorrect alignment of the X-ray beam, object, or receptor.
What is the term for areas on a radiograph that appear white?
✔✔ Radiopaque.
Why is it important to use lead aprons during X-ray procedures?
✔✔ To protect patients from scatter radiation.
What causes elongation in a dental radiograph?
✔✔ Using insufficient vertical angulation.
2
