Dental Assistant Practice Exam

What can result from improper angulation during the bisecting angle technique?

1. Image blurring

2. Distorted images

3. Shortened exposure time

4. Increased patient comfort

The correct answer is: Distorted images

Improper angulation during the bisecting angle technique can lead to distorted images. This technique requires careful alignment of the X-ray beam perpendicular to the imaginary line that bisects the angle between the long axis of the tooth and the film or sensor. When the angulation is incorrect, it can cause the resulting radiograph to misrepresent the anatomy of the tooth or the surrounding structures. This distortion can manifest as elongation or shortening of the tooth image or inaccurate representation of the anatomical features, making it challenging to assess dental conditions accurately. The other options do not accurately represent outcomes associated with improper angulation. For example, image blurring relates more to motion or low exposure settings rather than angulation issues. Shortened exposure time is generally a consideration in reducing radiation but is not a direct consequence of angulation errors. Increased patient comfort is not typically affected by angulation; in fact, incorrect angling may lead to patient discomfort if they need to hold awkward positions to achieve the correct angle.