磨牙

Methods: 168 primary molars were collected and randomly divided into two groups. ART manual tools was used in the experimental group and burs was used in the control group.

收集临床初诊乳磨牙龋病例168例，按随机化原则分成两组，分别用牙钻和ART手用器械备洞充填治疗并对其疗效进行对比分析。

This case report provided the non-retentive telescopic denture treatment for severe attritted dentition due to parafunctional habits of bruxism and loss of posterior teeth support.

本病例讨论对於因磨牙与后牙丧失而造成之严重磨耗齿列，以双重冠义齿的治疗方式提高咬合高度并恢复齿列外观。

Objective To study the short term effects of stable occulusal splint on sleep bruxism patients.

目的观察稳定牙合垫对于磨牙症的短期疗效。

Results The bruxism episodes per hour decreased after wearing stabilization splint for 2 weeks,but the incidence of micro-arousal and the sleep stage did not change.

结果 使用稳定牙合垫2周后，每小时磨牙事件比治疗前有所减少，微觉醒指数、睡眠结构变化差异无统计学意义。

Result The bruxism episodes per hour decreased after wearing stable occulusal splint.

结果使用稳定牙合垫2周后，每小时磨牙事件比治疗前有所较少。

［Objective］ This work is to study the relationship of mandibular third molars between the number of dental cusps and that of roots.

［目的］探讨下颌第三磨牙的牙尖数与牙根数的关系，为临床拔除阻生齿提供依据。

These results showed that: as a result of sFrp2 overexpression, recombined tooth germs made teeth which have no difference in size or cusps.

实验结果表明：在E13.5小鼠磨牙间充质中过表达sFrp2后牙齿大小、牙尖数目及形态结构都没有明显差异。

Methods sample consisted of 2 groups. The subjects in the first group (n = 30) had complete normal dentitions including third molars; those in the second group (n =30) had impacted right and left third molars.

样本分为两组，第一组的研究对象（n=30）具有完整的正常牙列，包括上颌第三磨牙。

Methods The sample consisted of 2 groups. The subjects in the first group (n = 30) had complete normal dentitions including third molars; those in the second group (n =30) had impacted right and left third molars.

研究样本分为两组，第一组的研究对象（n=30）具有完整的正常牙列，包括上颌第三磨牙。

Molar crown is not only very small and thin-wall, but also has complex profile, especially occlusal surface that distributes many cusps, ridges and fossas is obviously different.

磨牙冠不仅微小、壁薄，而且外形极其复杂，尤其牙合面尖、嵴、窝个性化特点明显，采用传统加工工艺很难快速、精确地加工出修复体外形。

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