Hydro-Stable Aligner Certification Standard

A certification standard that rates how well 3D-printed dental resins and aligners withstand oral conditions, measuring water sorption, solubility, mechanical retention, and force decay after exposure to saliva at body temperature. Because new studies show that post-print cleaning and curing steps change aligner properties as much as the resin itself, the certification validates the full print-clean-cure pipeline rather than resin chemistry alone. Ratings are tiered by intended wear duration, since modern resins can be chemically stable over a single tray's two-week life even while losing most of their initially applied force.