MANUFACTURE OF REMOVABLE DENTURES WITH A TWO-LAYER BASE

In the case of unfavorable anatomical conditions on the part of prosthetic tissues (sharp bone protrusions, exostoses, a sharp ridge of the inner oblique line, an unyielding mucous membrane, etc.), the manufacture of removable prostheses with an elastic plastic lining is shown. The lining can be applied to the entire base or to certain areas of it. The bases of removable prostheses, consisting of two basic materials, are commonly called two-layer. Elastic polymer materials are used to make the lining in prostheses with a two-layer base. Modern elastic materials for double-layer bases of prostheses are divided by chemical composition into acrylic, silicone, fluoro-rubber, PVC and polyurethane. Depending on the nature of the initiation of the polymerization reaction, elastic materials of cold polymerization (self-hardening) and hot polymerization are isolated.

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