The authors analyzed three commercial brands of acetic silicone made in Brazil, submitting them to tests for "Shore A" hardness and tear resistance, to ascertain which proportion of these materials should be mixed to the MDX 4 - 4210 Silastic rubber silicone in order to attain close to ideal physical properties. They conclude that physical properties of acetic silicones deteriorate with greater proportions of MDX 4 - 4210 Silastic. The latter, however, presents certain advantages when compared to the in natura materials due to a greater similarity with natural skin texture and to the greater flexibility of the material regarding the desired characteristics for use in the construction of facial prosthesis
Maxillofacial prosthesis; Hardness tests
