常見的顏面骨骼手術包括削骨和正顎手術，這兩者對於改變臉型都有明顯的效果。削骨手術主要處理顴骨和下顎骨的輪廓，主要是將臉部的周邊骨頭縮小。正顎手術則針對上顎和下顎，調整骨頭的位置，改變包括臉部周邊和中央，著重的不是縮小骨頭，而是將上下顎恢復正常的位置，達到臉型改變的效果。正顎手術通常與牙齒矯正一同進行，以改善咬合問題。因此，有些人誤以為只有咬合異常的患者才需要考慮正顎手術。實際上，對於咬合正常的患者，正顎手術也是調整臉型的一種選擇。了解正顎與削骨手術的效果差異和適應症，才能針對每位患者的不同情況提供最適合的改善方案。
Common facial bone surgeries include bone reduction and orthognathic surgery (OGS), both significantly altering facial contours. In bone reduction, the focus is on the cheekbones and lower jaw. This involves cutting bone to achieve a narrowing effect, primarily impacting the periphery of the face. OGS, targeting the upper and lower jaws, changes facial contours by adjusting bone positions. This alteration involves both the periphery and central face, allowing for changes to not only narrowing, but also widening or enlarging the face. Often performed with orthodontics, OGS addresses both bite and facial shape concerns. Consequently, most people believe that only patients with malocclusion require OGS. In fact, for patients with a normal bite, OGS is also an option for adjusting facial contours, with indications completely different from bone reduction. Understanding the differences in the effects and indications of OGS and bone reduction surgeries allows for providing the best suitable improvement plan according to each patient's unique conditions.