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本研究主要比较两种普通螺钉排布方法在下颌骨矢状劈开截骨术中的固定作用.实验在离体的下颌骨上进行。采用两种螺钉排布方式:第一种是,三枚螺钉水平地放置在下齿槽神经的上方;第二种为,两枚螺钉水平地安置在下齿槽神经的上方,而另一枚则放置在下齿槽神经的下方(即三合一排布)。离体下颌骨来自10具未防腐处理的并在冰箱里保存的尸体,并经临床检查,确认死者头颈部无外伤和病理改变,特别是下颌骨无病理改变和无创伤,而且第三磨牙非阻生牙,两侧后牙齿对称。将分离的下颌骨,从中间一分为二。每半侧下颌骨升支分别行矢状劈开截骨术,并随即复位,按上述的
This study mainly compared the fixation effect of two common screw arrangement methods in mandibular sagittal split osteotomy.The experiment was performed on isolated mandible. There are two kinds of screw arrangement: the first is that three screws are placed horizontally above the inferior alveolar nerve; the second is that two screws are placed horizontally above the inferior alveolar nerve while the other is placed Under the lower alveolar nerve (ie three in a row). The mandible from the body from 10 non-preserved preserved in the refrigerator and the body, and clinically confirmed that the deceased head and neck without trauma and pathological changes, especially the mandibular without pathological changes and non-invasive, and the third molars Non-impenetrable teeth, both sides of the teeth symmetry. Separate the mandible from the middle in two. Sagittal mandibular ascending branch of each sagittal split osteotomy, and then reset, according to the above