Abstract
In the processing of upper and lower complete dentures, pressures exerted to resin dough in the plester mold at trial closure were measured with the pressure measuring sheets.In according to the increase of the applied load in the range of 400kg to 1750kg, pressures at the portions of residual ridges in upper and lower dentures and of palate in upper denture were increased from 10〜20kg/cm2 to 35〜45kg/cm2.But at the portions of occlusal rims, little change of pressures was subjected by the applied load and those pressures in upper and lower dentures were 10〜14kg/cm2 and 15〜20kg/cm2, respectively.Since, while relatively larger load, such as 1750kg, is employed in much case of trial closure, it indicates that the achievement of one of the purposes of trial closure, complete packing of dough in the mold, is satisfied even by smaller load.When 850kg of load is employed at trial closure, it may be sure that the another purpose of trial closure, removing out of the excess dough as the flush, is also achieved.
