上下颌骨的生理差异可能导致了上颌牙量的增加大于下颌牙量的增加。
Biological variations between mandible and maxilla may lead to the more augment of teeth size in maxilla than in mandible.
上下颌骨的生理差异可能导致了上颌牙量的增加大于下颌牙量的增加。
Physiological differences between mandible and maxilla may lead to the more increase of tooth size in maxilla than in mandible.
背景：正确评价上下颌骨基骨的矢状位置关系在正畸患者的诊断和治疗过程中是十分重要的。
BACKGROUND: it is very important to appreciate the Sagittal discrepancy during the diagnosis and therapy in orthodontics patients.
还因对上下颌骨和牙床的震动作用，能松弛面部肌肉，促进血液循环，具有明显的保健功能。
Also the tooth brush has the shock effect of the upper and lower jowl and the gum, which can slack the facing muscle, activate blood circulation, and have marked health care function.
方法选取新石器时期人类单个牙齿602颗、上下颌骨固定牙齿1259颗进行观察、分析研究。
Methods A total of 602 teeth and 1259 teeth of jaws, from Neolithic times were made available to this study.
上颌骨向前发育，下颌骨后退，下颌平面角无明显增大，上下颌骨间不调改善，鼻唇角减小，面型明显改善。
Maxilla grew forward, mandible moved back. The mandibular plane Angle had no significant change. The discrepancy between maxilla and mandible were improved.
方法应用牙连同颌组织连续切片技术，对40例不同胎龄胎儿的上下颌骨作水平方向切片，观测并统计。结果胎儿28周后牙胚拥挤，上牙弓拥挤更显著；
Methods The maxillary and mandible of 40 fetuses (different ages) were cut horizontally with toothwithjaw continual tissue slices technique, observation and statistics.
前部近圆筒形，后部侧扁，头扁平，眼大口大，吻长而尖，呈三角形，上下颌等长，骨软。
Near the front cylinder, rear side of the flat, flat head, big eyes, long kiss and a sharp , triangular in shape, such as the long mandible, soft bone.
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.
分析两者之间位置关系与阻生类型、性别、曲面断层片上下颌神经管骨白线是否可见的相关性。
Correlations of their relationship and type of tooth impaction, gender, visibility of the white line of bone of the MC by panoramic radiography were analyzed.
影响错畸形型的骨骼因素主要包括上下颌矢状关系、垂直骨型、颏部倾斜度。
The main skeletal factors influencing malocclusion include the saggital and vertical skeletal relationship and the gradient of chin;
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.
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.
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