磨牙

By setting two perspective cameras at the first molars of the upper jaw and using the OpenGL selection mode,the real-time collision detection with high efficiency between lower and upper jaws can be realized as the lower jaw rotates around the axis of the articulator.

该方法通过在上颌左右第一磨牙近中舌尖处建立透视视景体，利用O penGL的选择模式，可以实时地检测下颌模型绕牙合架转动轴线旋转过程中与上颌模型碰撞对位情况，效率很高。

Van Beek's activator appliance could restrict the growth of maxilla and stimulate the growth of mandible in horizontal direction and control jaws posteroinferior rotation , lower front teeth and elongate mandibular molar in vertical direction.

Beek功能矫正器能在水平方向产生抑制上颌骨生长，刺激下颌骨生长；在垂直方向控制上下颌骨后下旋转，压低上下前牙及伸长下磨牙的效果。

Results All the patients got the results of strong anchorage at upper- and lower jaw, thus better resolving the serious congest.

结果全部患者治疗结束时均达到磨牙强支抗的目的，很好地解决了牙列严重拥挤问题。

Lower molar residual root/crown can be preserved for a long time after perfect enˉdodontic or root canal therapy and reconstruction of dental root post/core crown At understanding exactly the indicaˉtion.

笔者从1993年5月开始试着对那些下颌磨牙近远中根分离，髓室底缺如，已建议拔除的残根残冠采用单根独立桩核冠修复的83例136牙经3～5年以上复查，获得较满意的效果。

Therefore, we have decided upon a very gentle curvature from the cuspid back to the second molar with the bicuspids being slightly wider than the cuspids.

因此，我们决定了一个非常轻柔曲率从尖牙回到第二磨牙与bicuspids被略宽比cuspids 。

The differences in the cuspid and the first molar distances of the casts were measured to determine the surgical change and the relapse.

分别测量每个模型两侧尖牙和第一磨牙近中腭面外形高点连线距离。

Objective To evaluate the most effective method of fluoride application to prevent decalcification of enamel before,during and after etching in orthodontic treatment.

目的探讨氟化物在正畸治疗中预防牙釉质脱矿的最佳使用方法。方法制备正畸拔除的前磨牙96颗，随机分成4组，分别为对照组及酸蚀前、中、后用氟组，粘结托槽后，将每个样本分别放入装有2ml酸性人工唾液的试管。

Objective To investigate the therapeutic effects of repairment on molar endodontic perforation and crown.

目的 通过对牙髓底穿孔的后磨牙进行修补以及全冠修复的疗效进行研究。

So let me sharpen my tusks while I can.

所以。当我有时间的时候我就磨磨牙。

Bruxism is a sleeping disorder characterized by grinding of the teeth during sleep.

磨牙症是睡眠障碍的特点是磨牙齿在睡眠期间。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。