研究结果表明，在相同致伤条件下，伴有下颌骨骨折的颌面部火器伤的颅脑伤发生率高于无下颌骨骨折的颌面伤。
It was found that under the same wounding condition, the rate of cerebral damages was higher when the mandible was fracture than when the mandible was intact.
结论：山羊下颌无牙区及下颌第一前磨牙区可作为牵张成骨增高牙槽嵴新的实验动物模型。
CONCLUSION: the no tooth area and the first premolar area of mandible in sheep is a good experimental animal model for alveolar ridge augmentation by distraction osteogenesis.
结果矫治后上下颌尖牙至尖牙间每个前牙间牙槽骨的高度均有降低，但统计学无差异。
Results The alveolar height of anterior teeth from canine to canine decreased, but it didn't show significantly difference after treatment.
随着生长，男女上颌相对于颅底的位置无显著变化，而下颌突度增加；
With growth, the maxillary position which related to the cranial base was remained relatively constant while the mandible continually protruded forward.
粘结剂保留情况上下颌比较无显著性差异（P >0 .0 5 ）。
Comparison of retention rate between the supermaxilla and submaxilla revealed no significant difference (P>0.05).
无牙颌建位与正常人位无显著差异，从无牙颌位至最大张口位下颌突度的变化差异显著。
From the edentulous position to the largest open position, the mandibular protrusion showed marked difference at 5% level of significance.
在模板指导下，于猪下颌骨的无牙区预备种植窝，总计8个。
Under the guidance of the template in edentulate area of pig jaws, amounting to prepare planting 8 holes.
上下颌磨牙段牙槽骨高度三组无差异，基本处于参考范围内。
The alveoli dentales height of upper and lower molar shows no significant difference.
腭裂组、术后组下颌运动范围与对照组比较，差异无显著性。
The masticatory efficiency of cleft palate group and postoperative group all decreased significantly (P<0.05).
腭裂组、术后组下颌运动范围与对照组比较，差异无显著性。
The masticatory efficiency of cleft palate group and postoperative group all decreased significantly (P<0.05).
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