Where is the cusp of Carabelli located?

The cusp of Carabelli is present on the maxillary first permanent molar, making the correct choice the one that identifies it as being located on a permanent molar. This anatomical feature typically appears on the lingual surface of the mesiolingual cusp of the tooth and is an additional cusp that can vary in size and prominence among individuals.

It's commonly taught in dental anatomy since it plays a role in the occlusal surface of these molars and helps in understanding tooth morphology and dental classifications. Its presence or absence can also be significant when considering dental restorations or orthodontic treatments. Recognizing the cusp of Carabelli is part of understanding dental development and variations that can occur among permanent teeth.