牙骨

Take the advantage of epoxide resin's property, a model was made, in which the Youth module proportion of tooth, pericementum and alveolar bone was in accordance with the somatic data. 2. On this model, 3 types of brackets were bonded to the tooth.

利用环氧树脂能够模拟不同材料的弹性模量的特性，制作符合人体实际弹性模量比例的牙，牙周膜和牙槽骨的模型，并在不同象限模拟不同程度的错情况。

Methods: a model, in which the youth module proportion of tooth, pericementum and alveolar bone was similar to the somatic data was made taking the advantage of epoxide resin's property.

利用环氧树脂能够模拟不同材料的弹性模量的特性，制作相似于人体实际弹性模量比例的牙、牙周膜和牙槽骨的模型。

Objective. 1. There was few researchers who mentioned pericementum which has some effect of resistance to sliding when they studyed the friction of archwire-bracket.

一、研究目的： 1、鉴于目前在测定弓丝与托槽滑动阻力时，均没有考虑到牙周膜对滑动阻力的影响，因此本实验尝试建立一种新的实验模型，分别模拟牙，牙周膜，牙槽骨。

Results The model contains 45 153 elements and 27763nodes. It could be arbitrarily rotated, reduced and added, perspectived, dissected, and be revised and adjusted according to different demands, and then simulated the different situations of alveolar bone absorption and restoration with linked crown asked by clinical need, inspected the stress response of the mandible anterior teeth with different conditions of restrictions or loaded stress.

结果：模型共有单元45 153个，节点27 763个，可以根据要求任意旋转、缩放、透视、剖开，进行多种方式观察；并可以按照不同研究目的，对模型进行修改和调整，来模拟不同程度牙槽骨吸收、联冠修复以及各种约束和加载条件下前牙的力学反应。

The presurgical and post-surgical orthodontic treatmen were very important and necessary to regain the ideal face appearance and function.

结果：本研究5例患者经联合治疗后，颌骨关系正常，牙弓形态及曲线正常，牙排列整齐，咬合关系好，面型及功能均获明显改善，疗效满意。

Methods: Forty adult Wistar rats were used for these operations of transplantation of frozen autogenous tooth-mandible compound and fresh ATMC. Then the healing process after transplantation of frozen ATMC and fresh ATMC was compared by clinical, radiographical, histological and microangiographical observation.

选用健康成年Wistar大白鼠40只，任取2只用于观察正常颌骨的组织学图像，其余的大鼠随机分为新鲜移植组和冷冻组，行牙-下颌骨复合组织块移植到胫骨区的手术，分别于术后1、2、3、4、6、8、12、16、20周时处死动物，采用大体观察、X线片、组织学及微血管造影等观察手段对牙-下颌骨复合组织块移植后的愈合过程进行比较。

The results of Pancherz analysis shows that the correction of negative overjet is mainly due to the advancement of maxilla and upper incisors. But the position changes of mandible and lower incisors imply that severe maxillary hypoplasia with high angle and/or mandibular retrusion is contraindicated by the method conducted in this study.

头影测量侧位片Pancherz分析法的分析结果表明，本研究中上颌后缩患者反覆盖的矫治主要由上颌骨、上切牙的前移引起的，但下颌骨和下切牙位置的变化提示适应症的选择应注意避免上颌后缩同时伴有高下颌角和／或下颌后缩的患者。

Objective: To investigated the levels of osteocalcin in the peri implant sulcular fluid from dental implants.

目的： 研究牙种植体周围组织不同状态与牙种植体周围龈沟液中骨钙素的关系。

RESULTS: The 3DX CT image could clearly demonstrate the location of the unerupted and impacted teeth in the bone, including the labial or palatal location, crown, root and the relationship between the impacted teeth and adjacent important structures.

结果：3DX CT清晰而直观显示了84颗埋伏牙在颌骨内的唇腭位置、与邻牙牙根、根尖的距离以及与重要解剖结构的毗邻关系。

Bone reconstruction following uprighting of impacted third molars.

悬吊竖直阻生第三磨牙后牙槽骨改建情况。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。