牙

Methods: 163 patients with 179 embedded supernumerary teeth were checked by digital pantomogram to illustrate the precise location and condition.

对在全景片或其他检查中发现的埋伏多生牙病例，行数字化断层片检查，以显示埋伏多生牙的阻生情况。

Methods: 62 children (7~12 years old) with ambushed supernumerary teeth, were examined by Xray, and underwent odentectomies under basal anesthesia by using Propofol and Fentanyl.

对62例埋伏多生牙患儿（7~12岁），经X线检查术前定位后，在异丙酚、芬太尼静脉麻醉下实施牙拔除术。

On the base of the reverse engineering and surveying theory, taking the advantage of measurement equipment and Surfacer which is a reverse engineering software, studying on the optics measurement technique of structured light, this paper has put forward the detailed method of three-dimensional measurement on dental cast, obtained its data by experiment and proceeded them.

本文在反求工程理论和测量理论的基础上，以测量设备及反求工程软件surfacer为手段，研究了激光三维测量技术，给出牙颌三维测量的具体实现方法，通过实验获得牙颌数据，并利用反求软件处理所测得的数据。

Data of tooth surface before and after wear were both obtained through laser scan system. The images were then reconstructed by SURFACER software.(2) C language program used of improved iterative closest point algorithms was developed to registrate imagines before and after wear. Standard plan was defined to the overlapped imagines after registration, then wear quantity was measured.￤ear was imitated by tooth brush machine which was made by STOMATOLOGY COLLEGE FORTH MILITARY MEDICAL UNIVERSITY.

应用三维激光扫描仪采集牙模型的表面数据，在计算机中用SURFACER逆向工程软件重建牙表面；②运用最近邻点迭代匹配算法加以改进，编制 C语言程序，配准磨耗前后的三维图像，在确定基准平面后，计算磨耗前后的体积变化量；③用口腔医院自制刷牙机进行模拟磨耗，用传统称重法，通过电子天平测试件的重量变化，用失水法计算测试材料的密度，换算成体积。

Objective:To investigate the effects of extraction to the morphology of symphysis and the relationship between lower incisors retraction and the changes of the symphysis by evaluating the cephalograms of patients with Angle Class II Division 1 malocclusion.,in order to provide a reference to clinical treatment.

目的： 通过对安氏Ⅱ~1类错拔牙矫治前后的X线头影测量分析，观察矫治前后颏部形态的变化，并探讨下切牙内收量与颏部厚度和倾斜度变化之间的相关关系，以期为临床矫治设计提供一定的参考。

Methods The failure factors were analyzed in 148 teeth treated in the root tubes of teeth.

对148颗根管治疗失败牙进行原因分析，对失败牙彻底消毒后应用复方甲硝唑根管糊剂再充填。

The endodontic department is for filling cavity of teeth and root canal treatment.

这是三楼。三楼主要是牙体牙髓科。

Not only in the gums teeth stains teeth on the edge of the surface there, and sometimes the neck or root in the teeth also has.

牙渍不仅在牙龈边缘上的牙面上有，有时在牙颈部或牙根上也有。

objective the purpose of this study was to summarize our experience of the application of internal rigid fixation with miniplate to treatment of mandibular fractures.methods a retrospective analyisis of clinical data of 67 cases,who had experienced the anatomic reduction and rigid fixation by using miniplate.with the help of maxillomandibular distraction pre operation and post operation and temporary maxillomandibular fixation during operation,the fracture bones were smoothly reduced and fixed.results clinical and radiographic examination showed that all cases gained good clinical results and precise anatomic alignment of fracture postoperatively without infection,malocclusion,bone malunion or other complications.conclusion mocortical miniplate fixation of the mandible is a reliable and effective techinique providing rigid fixation and an ideal modality for the treatment of mandibular fractures.combined with maxillomandibular fixation.

对67例下颌骨骨折患者的临床资料进行回顾总结，所有患者应用小型接骨板行坚固内固定治疗。其中7例颏部骨折，12例颏旁骨折，16例颏孔区骨折，9例体部多发性骨折，5例体部粉碎性骨折；18例合并其他部位骨折。所有患者术前经临床检查和影像学检查明确骨折的位置和骨折线的数目后，分段牙弓夹板结扎、颌间弹性牵引，使移位的骨折段逐渐复位；术中经口内切开复位、细钢丝颌间结扎、小型接骨板坚固内固定；术后行临床检查和影像学复查，必要时颌间弹性牵引7～10 d。结果所有患者手术切口ⅰ期愈合，治疗效果满意；临床检查所有患者牙合关系良好、面部对称；影像学复查证实骨折线对位良好。结论经口内切开小型接骨板坚固内固定辅以颌间固定治疗下颌骨骨折效果可靠，术后并发症少，是一种理想的手术方法。

In the second section, the author firstly makes a simple discussion on the distribution and date of the ivory Zhangs in China and then gives a preliminary classification on those excavated in Shanxingdui site.

第二节首先简单的论述全国"牙璋"的分布情况及其年代，然后对三星堆所出土"牙璋"进行初步分类及分期。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐