Where is the cusp of Carabelli located?

The cusp of Carabelli is an anatomical feature commonly found on the maxillary first molar. It is an accessory cusp that typically projects from the mesiolingual cusp. This structure is noted for its presence in certain individuals and is considered a feature that adds to the complexity of the tooth's morphology.

When assessing the location, focusing on the maxillary first molar's mesiolingual aspect is essential. The cusp of Carabelli is specifically located in the mesiolingual cusp area, aligning perfectly with the correct answer. Understanding this aspect of tooth anatomy is crucial for tasks involving dental assessment, treatment planning, and understanding occlusion, as well as for being able to accurately describe tooth morphology to patients or colleagues in a clinical setting.