Bond strength of thermoformed and 3D-printed aligners with universal primer versus one-step aligner adhesive with and without sandblasting: An in vitro study - Viet Anh Nguyen; Viet Hoang; Thi Quynh Trang Vuong; Thi Nga Phung; Nghi Phan Bich Hoang (PLoS ONE, 2026)