关键词: 全口义齿, 牙科印模技术, 发展现状

Abstract: Before the restoration of complete denture，the plastic impression materials should be used to reproduce the anatomical morphology of edentulous alveolar ridge and surrounding soft and hard tissue. A clear and accurate dental impression will not only provide a good structural basis for technicians to fabricate denture subsequently，but also is the key to ensuring the retention，stability and function of the final restoration. Existing studies have shown that，in addition to impression materials，impression trays，impression operation and impression disinfection，impression technique is also one of the important factors affecting the accuracy of edentulous impressions. In recent years，with the rapid development of all kinds of dental materials and the in-depth study on stomatognathic system function and the basic theory of complete denture retention by scholars at home and abroad，the method of making impression is constantly being improved and innovated，which effectively improves the clinical treatment effect of edentulous jaw. This paper mainly summarizes the development status of impression technique of complete denture. On the one hand，it combs the concept of different impression technniques of complete denture and points out the advantages and disadvantages of clinical operation，so as to provide reference for making suitable impressions in clinically related difficult cases. On the other hand，it is aimed to point out the current problems to be studied，hoping to open up new ideas for further breakthroughs in this field.

Key words: complete denture, dental impression technique, development status