Abstract
An impression in denture prosthodontics is the first step for the construction of complete denture. The alveolar mucosa as an impression objectives can be displaced underpressure so that method in edentulous impression taking has influenced on contour variations ofthe master cast.
In this study, the impression pressure is devided between the seating speed and holdingpressure of the impression tray, and the three dimensions repositioner and simulation modelsupposed maxillary edentulous alveolar ridge are used for impression in the denture construction.It is investigated with three dimensional measurement of the master cast that the seating speedand holding pressure are influenced on the reproducibility of simulation model.
As the result of this study, the following conclusion was obtained.
1. The seating speed dose not influence contour variations of the master cast irrespectiveof pressure-displaceability of simulation model.
2. The holding pressure influences contour variations of the master cast of the simulationmodel except the simulation model without pressure-displaceability.
The pressure-displacement of the stopper portion and the portion close to stopper areinfluenced by holding pressure.
Especially, the simulation model with rich pressure-displaceability raise the large amount ofpressure-displacement according to holding pressure.
