治疗嚼肌肥大,通过口外途径视野清楚,操作方便,但易于损伤面神经下颌缘支,术后遗留明显瘢痕。通过口内途径虽然没有上述弊端,但视野小、操作困难且易于损伤周围的软组织。作者采用以内窥镜辅助的方法,克服了单纯经口途径的缺陷。 先从口腔粘膜作切口,沿下颌升支前缘外侧自上而下切至第一磨牙外侧,骨膜上分离下颌骨体,下颌角部位作骨膜下分离。在该处皮肤侧作一小切口,形成通向口腔的通道。用Leibinger套针连同一颊部牵拉器通过隧道固定于口内手术区。通过该牵拉器安装可以直 Treatment of chewing muscle hypertrophy, clear vision through the oral route, easy to operate, but easy to damage the facial nerve mandibular branch, the obvious scar left after surgery. Though not having the above mentioned drawbacks through the oral route, the field of vision is small, the operation is difficult and the soft tissues around are easily damaged. The authors used endoscopy-assisted methods to overcome the drawbacks of simple oral routes. First from the oral mucosa for incision, along the outer edge of the ascending ramus of mandibular mandibular incision to the outside of the first molar, periosteal separation of the mandibular body, mandibular angle for subperiosteal separation. Make a small incision at the skin side to form a passage to the oral cavity. Use the Leibinger trocar with a cheek retractor through the tunnel to secure the intraoral region. Through the retractor can be installed straight