Background: Deeply impacted mandibular third molar extractions are technically challenging due to limited visualization, anatomical constraints, and the risk of complications. Conventional burs lack depth markers, increasing the likelihood of excessive bone removal and nerve injury.

Objective: To introduce and evaluate a novel color-marked surgical bur designed to improve depth control and surgical precision.

Methods: The bur features a white marking at 10 mm from the tip, providing a visual depth guide. In 50 cases of deeply impacted third molar extractions, outcomes such as surgical precision, operating time, and postoperative complications were assessed.

Results: The color-marked bur enhanced depth control, reduced operating time, and improved bone removal efficiency. Postoperative outcomes showed a lower incidence of nerve injury.