Research progress in properties of aligner foil sheet materials and the influencing factors
XU Jia-ning
MA Yan-ning
JIN Zuo-lin
Abstract：In recent years,aesthetic and comfortable clear aligners have been increasingly favored by patients.Thermo-plastic materials,as the main material for clear aligners,have attracted widespread attention.The study on the properties of thermoplastic materials shows that the stress release,stress relaxation,hardness,elastic modulus and water absorption are affected by self-factors such as the type of materials and physical and chemical structure,and external factors such as thermoforming and aging.Compared with the ideal orthodontic thermoplastic materials,the properties of existing ther-moplastic materials are still imperfect.Improving thermoplastic materials properties through blending modification,sur-face modification,and changing the number of material layers is the focus of current research.Therefore,this article re-views the research progress in the performance of thermoplastic materials of clear aligners and the influencing factors.
Keywords：clear alignerthermoplastic materialsstresshardnesselastic moduluswater absorption
Publication Date：2025-02-27
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 92-98 )