What is the term for the crown surface of teeth that is located next to the tongue?

The term for the crown surface of teeth that is located next to the tongue is indeed the lingual surface. This specific terminology is used to describe the inner surface of the teeth that faces towards the tongue, distinguishing it from other surfaces of the teeth.

In dental anatomy, each surface of a tooth is designated a specific name based on its orientation. The lingual surface is an important reference point, particularly in clinical settings for procedures and examinations.

Understanding the terminology helps in effective communication among dental professionals about various aspects of tooth structure and orientations during procedures, assessments, and patient education. The other terms refer to different surfaces: the labial surface is the front surface that faces the lips, the buccal surface refers to the outer surface towards the cheeks, and the occlusal surface is the top surface that comes into contact with opposing teeth during chewing.