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.

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Objective To evaluate the effect of Green OrTM on the crown retention tooth preparation.

目的探讨涂布极固宁TM后对全冠固位力的影响.

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Objective : To investigate the effect of the tooth preparation and temporary bridge on local oral flora.

目的本研究旨在探讨使用牙科放大镜临床牙体预备后对金瓷冠唇侧牙周状况的影响.

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