Speed Up Monitoring Orthodontic Treatments by Using Gingival Crevicular Fluid FT-IR Spectroscopy in ATR Geometry. - Maria Lepore; Marianna Portaccio; Fabrizia d'Apuzzo; Ludovica Nucci; Vincenzo Grassia; Marco Annunziata; Carlo Camerlingo (IEEE Trans. Instrum. Meas., 2025)