Which orientation marker is essential on dental radiographs to indicate sides?

• A. Right and left side orientation
• B. Anterior-posterior orientation
• C. Superior-inferior orientation
• D. Top-bottom orientation

Answer: (A)

Knowing which side of the patient the image represents is essential for correctly localizing teeth, roots, and any findings. The right and left side orientation marker provides a clear reference of which side of the patient is shown, so you can accurately interpret where a lesion, root fracture, or impacted tooth actually sits. Since dental radiographs can be displayed in ways that might make sides appear reversed, this marker prevents misidentification that could lead to incorrect treatment, such as pulling the wrong tooth or misdiagnosing a structure. Other directional terms like anterior-posterior, superior-inferior, or top-bottom describe general axes rather than identifying which side of the mouth the image corresponds to, so they do not serve the same purpose as a side marker on dental radiographs.