The aim of this study was to introduce a safe ostectomy method for the correction of prominent mandibular angles via a “burring and holes connecting technique.”A subperiosteal dissection was conducted, and the mandibular angle was exposed. Using a 7-mm–diameter burr, 3 to 5 holes were made on the predicted ostectomy line. The consecutive holes were connected using an oscillating saw. A bone fragment was removed, and irregularities were smoothened through light burring.Twenty-three patients (2 men, 21 women; mean age, 28.4 y) were operated on. The mean trace observation period was 11 months. Among the 23 patients, no subcondylar fracture or hematoma occurred. In x-ray comparisons, there was no excessive or insufficient reduction of the mandibular angle.We think this burring and holes connecting ostectomy might be a safe method for the correction of prominent mandible angles even for inexperienced surgeons.