What should be done next if there is swelling at the mandibular angle?

Taking an X-ray is the most appropriate next step when there is swelling at the mandibular angle. This imaging technique helps in evaluating underlying conditions that may not be immediately visible through a physical examination. Swelling in this area could be due to several reasons, including dental abscesses, impacted teeth, tumors, or other pathologies. An X-ray can provide vital information about the presence of any dental issues, bone abnormalities, or other causes that could explain the swelling.

Additionally, while prescribing antibiotics might be necessary if there is an infection, it would be premature without confirming the cause of the swelling first. A follow-up appointment could be needed, but it would ideally occur after further investigation. Performing a biopsy may be required if a malignant process is suspected; however, this would also depend on the imaging results and is not the immediate step in assessing the swelling. Thus, obtaining an X-ray is crucial for narrowing down the diagnosis and determining the appropriate next course of action.