Journal of Craniofacial Surgery

Skip Navigation LinksHome > March 2010 - Volume 21 - Issue 2 > Evaluation of the Shore A Hardness of Silicone for Facial Pr...
Journal of Craniofacial Surgery:
doi: 10.1097/SCS.0b013e3181cf5fa4
Original Articles

Evaluation of the Shore A Hardness of Silicone for Facial Prosthesis as to the Effect of Storage Period and Chemical Disinfection

Guiotti, Aimée Maria DDS, MD, PhD*; Goiato, Marcelo Coelho DDS, MD, PhD†; dos Santos, Daniela Micheline DDS, MD, PhD†

Collapse Box


The failure of facial prostheses is caused by limitations in the properties of existing materials, especially flexibility and durability. Therefore, this study evaluated the Shore A hardness of silicone used for fabrication of facial prostheses, Silastic MDX4-4210, according to the influence of storage period, daily disinfection, and 2 types of pigmentation. Thirty specimens were fabricated and divided in 3 groups: colorless, pigmented with makeup, and pigmented with iron oxide. Analysis of results was assessed on a Shore A hardness meter immediately, 6 months, and 1 year after fabrication of specimens, following the guidelines of the American Society for Testing and Materials. The hardness values were statistically analyzed by the Tukey test. The silicone exhibited an increase in hardness with time. However, the hardness was stable from 6 months to 1 year. It was concluded that the silicone is within the values of Shore A hardness reported in the literature, regardless of the storage period, pigmentation, and chemical disinfection.

© 2010 Mutaz B. Habal, MD

Follow Us!


Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.