TY - RPRT TI - Ageing effects on chemical, physical, mechanical, and morphological properties of clear aligners - a systematic review. AU - Nabeel Almotairy AU - Fahad Aleisa AU - Abdulrahman K Alshammari PY - 2026 DO - 10.1186/s40510-026-00642-1 UR - https://pubmed.ncbi.nlm.nih.gov/42709287/ ID - 42709287 ER -