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Packing the acrylic during the rubbery stage

# When fabricating dentures, what would be the most likely outcome if the lab compressed/packed the acrylic during the rubbery stage?
A. Higher porosity than normal
B. A lot of extra resin being attached to the denture that will take a long time to trim
C. Incomplete picking up of anatomical details
D. The denture would have an increased VDO 



The correct answer is C. Incomplete picking up of anatomical details

Packing and compressing acrylic during denture fabrication should be done in its doughy stage.

The doughy stage is the ideal for packing acrylic resin because it is the moment when acrylic is most packable and workable.

The rubbery stage of acrylic denotes the start of the setting when heat is released from the setting acrylic.

Rubbery acrylic also has a tendency to revert back to its original position regardless of the forces applied to it during packing, resulting in incomplete packing.

VDO (Vertical Dimension of Occlusion) is synonymous with OVD (Occlusal Vertical Dimension) and is the relationship of the maxilla and mandible when the teeth are in maximum intercuspation. 
 

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