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1.
Al-Azhar Dental Journal. 1990; 5 (1): 147-60
in English | IMEMR | ID: emr-15114

ABSTRACT

The aim of this study was to investigate the effect of increased curing pressure on the dimensional changes of acrylic maxillary denture. Twelve reference guides were used to measure the changes in the horizontal lateral, horizontal anteroposterior and vertical direction between the waxed and the processed dentures with each technique. The results showed a change in the lateral direction of 0.5%, 0.14%, in the anteroposterior direction of 0.53%, 0.26%, in the vertical direction of 0.098%, 0.25% for the conventional and pressure processing techniques, respectively. From this study, it could be concluded that the pressure polymerization techniques reduce the dimensional changes of acrylic resins significantly in all the measured directions


Subject(s)
Acrylic Resins , Pressure
2.
EDJ-Egyptian Dental Journal. 1990; 36 (2): 173-189
in English | IMEMR | ID: emr-15847

ABSTRACT

The addition silicones impression material can be used for complete and partial denture, and can be stored over 15 days and still give satisfactory results. All the impression used in this study experienced a negative dimensional change. Changes in anteroposterior directions was more than that of the lateral direction in both complete and partial impressions. Partial dentures impression experienced more shrinkage than the compete dentures impressions in all measured directions through out the study period


Subject(s)
Polyvinyls , Dentures
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