Insertion of immediate dentures is usually associated with less pain as the denture acts as a splint. This is because the denture provides support and protection to the freshly operated alveolar ridge, minimizing movement and trauma to the surgical site. It also helps in controlling postoperative bleeding and swelling. By stabilizing soft tissues, immediate dentures reduce the risk of irritation and discomfort, promoting more comfortable healing compared to leaving the site exposed. This splinting effect is crucial for patient comfort during the critical initial healing phase.

Reference: Oral & Maxillofacial Surgery, Raymond J. Fonseca, 4th Edition.