What is the crown surface of the anterior teeth that lies next to the lips called?

The crown surface of the anterior teeth that lies next to the lips is referred to as the labial surface. This term specifically describes the facial aspect of the anterior teeth, which includes the central incisors, lateral incisors, and canines. The labial surface is the part of the tooth that is visible when someone smiles or speaks, making it important in both aesthetics and function.

Understanding the labial surface is crucial for various dental practices, including cosmetic procedures, overall oral health assessments, and patient education regarding hygiene practices. In contrast, the other terms refer to different surfaces or aspects of teeth: cuspid pertains to canines, the lingual surface relates to the side facing the tongue, and the buccal surface refers to the side of the teeth that faces the cheeks, which is not applicable for anterior teeth.