目的(1)研究固定桥修复前后基牙支持能力是否发生变化，并探讨其变化规律。
Objective (1) to study whether the maximal occlusal force of abutments before and after restored with fixed partial denture is to change or not, and to probe into the rules of this change.
目的：研究风湿性心脏病瓣膜间质细胞的表型转化规律，探讨其与瓣膜病理形态发生的关系。
Objective:To investigate the relationship between the phenotypic regulation of the rheumatic heart valve interstitial population and the biological mechanism of pathological formation.
目的了解炎琥宁注射剂不良反应发生的相关因素，探讨其不良反应发生的一般规律及特点。
Objective By analyzing the relevant factor of adverse drug reaction(ADR) of Yanhuning injection in Zibo, to investigate the pattern and character of ADR.
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