Comparative evaluation of pressure generated on a simulated maxillary oral analog by impression materials in custom trays of different spacer designs: An in vitro study.

In unrelieved custom trays, the pressure was greater over the ridge crest than over the palate.[ 23 ] On comparing all our samples, initial pressures at all the locations were found to be higher than the end pressures and this difference was found to be statistically highly significant ( P < 0.001) [ Graph 3 ].

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