Background: Color stability is essential for the longevity and esthetic success of maxillofacial silicone prostheses. Heat-polymerized silicone elastomers are prone to discoloration following environmental exposure. Ultraviolet protective nanoparticles have been proposed to improve their optical stability. Aim: To compare the color stability of two intrinsically stained heat-polymerized maxillofacial silicone elastomers reinforced with zirconium dioxide (ZrO₂) and titanium dioxide (TiO₂) nanoparticles following artificial aging.
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Dixit et al. (2026) studied this question.
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