Evaluating chemical and surface stability of thermoformed and 3D-printed clear aligners after intraoral exposure - Fabrizio Sanna; Leila Es Sebar; Isabella Sannino; Samuele Avolese; Simone Parrini; Marco Posadino; Paola Testa; Nicola Scotti; Mario Alovisi (PLoS ONE, 2026)