磨牙

Methods Ninety-five lower first molars with buccolingual vertical fracture were separated and cut vertically along the fracture line to exposure the proximal and distal residual roots. After complete pulp canal therapy,the residual roots were covered with PFM post crowns.

方法选取95例颊舌方向纵折之下颌第一磨牙病例，完全纵剖牙冠及髓室底，获得独立的近远中残根，完整的根管治疗后，行桩核和烤瓷熔附金属全冠修复，3年后进行临床评价。

In this study, 156 carious teeth from the children aged from 3~11years old were collected and divided into two groups,78 in each group.

收集3~11岁儿童乳牙龋病患者156例，随机分为两组，每组78例，分别采用Carisolv凝胶去腐和常规磨牙去腐，比较两组儿童的感受及治疗效果。

The cephalometric films before and after treatment were measured and compared.

治疗前后均拍摄头颅定位侧位片，并测量切牙和磨牙的治疗变化。

Days after the extraction of the first premolars, the upper canines were subjected to coronally orthodontic extrusion movements.

后10天内提取的第一前磨牙，上尖牙受到冠正畸挤压运动。

The first maxillary molars were distalized an average of 3.4mm and were tipped distally an average of 3.3?

上领第一磨牙平均每侧向远中移动3.4mm，并伴有 3.3的牙冠远中倾斜。

Abstract］Objective: To assess the feasibility of ferric sulfate as a pulpotomy agent in primary teeth.

摘要］ 目的：探讨硫酸铁溶液作为儿童磨牙牙髓切断术药物的可行性。

The three maxillary molars at the experimental sides were moved as one unit mesially by a Sentalloy coil spring delivering a force of 10 cN over a long range of activation. The contra-lateral molars served as controls. At 1, 2, 4, 8, and 12 weeks groups of animals were killed for histological evaluation.

实验侧的三颗磨牙用结扎丝颌粘接剂固为一个整体，在超弹性拉簧作用下（力值为0.1牛顿）向切牙侧移动。l， 2， 4， 8和12周时给予大鼠过量麻醉剂，材料用于组织学研究。

Upper first molar moved 4.14mm distally, and the upper incisors moved 0.66mm mesially.

上颌第一磨牙向远中平均移动4.14mm，上颌中切牙向唇侧移动0.66mm。

The fluorescent bands formed in both mesial and distal cementum.Conclusion The results don't support the point that transseptal fibre or force of molar eruption makes teeth migrate mesially; the mesial migration of teeth is related with the reconstruction of alveolar bones and the stress distribution in the bones.

实验结果不支持越隔纤维作用或磨牙萌出力作用引起牙齿近中移动的观点；牙齿近中移动与颌骨内应力分布有关，牙槽骨改建的量与牙齿近中移动量呈正相关。

Radiograph of teeth in mesiodistal direction were taken.

结果 ：单根单根管上颌第二前磨牙的根管弯曲仅有 2个，单根双根管牙齿的根管明显弯曲有 6个，在 2 8个双根牙中有明显根管弯曲的 6个，根管弯曲的牙齿总发生率为 6 。6 %(14 /2 13)。

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