Lip repositioning surgery is a predictable surgical technique that provides a solution for patients with excessive gingival smile. This case series presents four patients with 6 to 8 mm of excessive gingival display who received a modified surgical technique using internal horizontal mattress sutures to immobilize the labial superior elevator muscle. None of the patients exhibited complications, and their healing was uneventful. All patients demonstrated predictable results and presented with stability over an average of 3.5 years of follow-up. The modified lip repositioning surgery with internal horizontal mattress sutures seems to provide reliable long-term results in patients with an excessive gingival display.
