抄録
In cases with maxillary defects, there are complicated undercut areas that may also contain sensitive tissue. For such cases, we developed a novel impression method using an addition-curing silicone rubber impression material mixed with Vaseline for secure and precise impression. The new impression material had the same degree of permanent strain and dimensional stability as traditional addition-curing silicone rubber impression material. However, it had problems including a difficult procedure and rough surface of the plaster model. Therefore, we developed a second new impression material that has the same degree of surface roughness as traditional addition-curing silicone rubber impression material and an easy procedure for maxillary defects.
