Objective: To observe the clinical result of the method of combined impression used in post and core PFM crowns.
目的：观察琼脂类和藻酸盐类印模材联合印模法在桩核烤瓷冠中的应用效果。
Adopting the scene method based on previous qualitative studies, the research aimed to discussing the role of impression management during interview assessment.
研究结果表明，面试评价只分析出一个因素即总体印象；招聘者对印象管理策略的知觉具有匹配性。
Conclusion: The new method of atrial septal puncture located by left atrial impression on esophagus is accurate, safe and simple to perform.
结论：食管左心房压迹定房间隔穿刺点，方法准确安全，简单易行。
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