结论采用微型侧壁螺丝刀经口腔内固定下颌骨角部和髁状突颈部骨折，完全避免了颌面部皮肤切口，尤其对患者的心理安慰，意义重大。
Conclusions Intraoral internal fixation on mandibular Angle and condyle fracture with a micro-angular screwdriver avoided facial incisions thoroughly it was of great significance to the patients.
方法对21例下颌骨角部和髁状突颈部骨折患者，采用微型侧壁螺丝刀，经口内微型钛板内固定。
Methods In 21 cases, internal fixations were performed at mandibular angle and condyle fractures with a micro-angular screwdriver through intraoral minimally invasions.
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