Spectral Assessment of Oral Fluid After In-Office Teeth Whitening Procedure

Oral fluid assessment before and after the in-office whitening procedure was carried out using the Raman spectroscopy method. The patients aged 18–32 were examined. The oral fluid was collected in the morning using sterile vials and then frozen at -20°C. The vials were defrosted for 10 hours at +3°C. All samples were divided into 4 groups: oral fluid before, after, two weeks after and one month after the procedure of teeth whitening. Spectral change in the oral fluid composition after the tooth whitening procedure related to the change in lipid organic composition was detected.