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在用凿和钻的方法拔除下颌阻生第三磨牙,尤当病人年龄在22岁以上牙冠有部分萌出时术后并发症较多。如干槽症、第二磨牙远中牙周损伤以及下齿槽神经、舌神经损伤等均可发生,多数作者认为以上情况与手术时在局部颊侧去骨、在第二磨牙远中插入牙挺或使用旋转性工具、软组织瓣的设计以及骨膜瓣翻转较大有一定关系。作者有鉴于此,提出本法(改良Fry氏法)可使骨膜瓣翻转减小,避免了骨缺损,减少使用旋转性工具,设计的软组织瓣和骨切断可使伤口早期闭合,消灭死腔,因而减少了术后各种并发症。操作方法切口:于下颌枝底部沿龈的舌侧缘,向第三或第二磨牙(第三磨牙未萌出时)的远中舌尖作一切口。向内倾斜作切口,把第三磨牙远中龈沟的上皮从复盖在牙上的龈上分离。切口在龈沟内向前延伸并切开第一、二
In the use of chisel and drill removal of the mandibular impacted third molars, especially when the age of patients over 22 years of age there are some eruption of the crown more postoperative complications. Such as dry trough disease, the second molar distal periodontal injury and inferior alveolar nerve, lingual nerve injury, etc. can occur, most of the authors believe that the above conditions and surgery in the local buccal bone, insert the teeth far in the second molar Ting or the use of rotating tools, soft tissue flap design and periosteal flap turnover have a greater relationship. In view of this, the author proposed that this method (modified Fry 's method) can reduce the periosteal flap turnover, avoid the bone defect, reduce the use of rotating tools, the design of the soft tissue flap and bone severance can make the wound early closure, Thus reducing the postoperative complications. Method of operation incision: The bottom of the mandibular branch along the lingual margins of the gingival margin, to the third or second molar (third molar did not eruption) of the distal tip of the tongue made a cut. Slanted inward incision, the third molars distal gingival sulcus epithelium separated from the gum covered in the teeth. The incision extends forward in the sulcus and cuts the first and second