PREDICTION OF HEATING TIME OF CLEAR SINGLE-LAYER TPU ORTHODONTIC ALIGNER TRAYS: AN IN VITRO STUDY. YHCĐ [Internet]. 2026 June 16 [cited 2026 Nov. 8];67(CĐ6-NCKH). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/5369