What surgical procedure corrects a defect of the lip?

Cheiloplasty is the surgical procedure specifically designed to correct defects of the lip. This procedure typically addresses issues such as cleft lips or other congenital anomalies that affect the lip's structure and function. By utilizing various techniques to reshape and reinforce the lip, cheiloplasty aims to restore both aesthetic appearance and functional capabilities.

In contrast, palatoplasty focuses on repairing defects of the palate, which is the roof of the mouth, not the lip. Dermatoplasty refers to skin grafting or skin repair, and while related to skin, it does not specifically address lip defects. Rhinoplasty is a surgical procedure to reshape the nose and is unrelated to issues concerning the lip. Therefore, cheiloplasty is the only procedure among the options provided that is correctly associated with lip defects.