Here is one version of a posterior palatal seal. I was trained to use a single scribe line as the posterior palatal seal - which - can be easily removed by grinding, etc. As Dr. Dray says - a maxillary denture seal is the same thing as the seal on your refrigerator door. If you have a great seal on that door, it's tough to open it. Denture seal = Refrigerator Door Seal
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Please watch: ""
https://www.youtube.com/watch?v=MaA_KowA95s
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