Physical properties of a pigmented silicone maxillofacial material as a function of accelerated aging.
The effects of accelerated aging on a pigmented elastomer were evaluated by using a weathering chamber. Silastic 44210, a maxillofacial material with proven color and physical property stability, was chosen for pigmentation with 11 maxillofacial pigments. The values of ultimate tensile strength, maximum percent elongation, shear strength, Shore A hardness, and permanent deformation were determined for the pigmented elastomer before and after accelerated aging for 900 h. Results obtained indicate that the incorporation of 0.2% by weight of pigments can alter the physical and mechanical properties of the base elastomer. Accelerated aging had no effect on the physical properties of the pigment/elastomer combinations.
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004396:Coloring Agents; D004548:Elasticity; D006244:Hardness; D008447:Maxillofacial Prosthesis; D012826:Silicone Elastomers; D013314:Stress, Mechanical; D013718:Tensile Strength; D013997:Time Factors
D004396:Coloring Agents; D012826:Silicone Elastomers