tooth preparation

Objective : To study the stress tooth preparation with two kinds of porcelains.

〔摘要〕目的: 研究瓷贴面复合体应力分布规律.

The changes of gingival crevicular flora after tooth preparation of full crown

全冠牙体预备后局部龈沟菌群的变化

The utility model relates to a rotary tillage land preparation machine; a reducer is connected with a packing auger, and a roller is connected with a roller outer tooth.

一种土地旋耕整地机，减速器和绞龙连接，滚筒和滚筒外齿连接。

Objective: To study the stress tooth preparation with two kinds of porcelains. 〔

摘要〕目的：研究瓷贴面复合体应力分布规律

Conclusion The three types of PLV preparation all can obtain the ideal appearance and color, if the cases selected reasonably, the tooth prepared enough and high strength composite systems are used.

【结论】合理选择适应证、足够的牙体制备及高强度树脂粘结系统，可保证3种牙体预备类型均能使PLV获得良好的外形、满意的颜色及可靠的临床近期粘接强度；

Patients undergoing two vital tooth preparation for crown/ bridge were selected for the experimental volunteers and who gave informed consent was included in the study.

有两颗牙进行冠或者桥修复预备的患者入选试验的志愿者，并且在试验之前征求患者的知情、同意并签字。