Mohammed Al Ghamdi^1,, Nada Shokair², Saleh Al Qahtani³, Abdulrahman Abusaq⁴, Roula Albounni⁵

This study aimed to compare the colour changes of resin-infiltrated white spot lesions after exposure to artificial saliva and oral rinses (Oral-B Pro-Expert, Listerine and Colgate Plax) at different time intervals (24 h, 72 h and 7 d). The premolar teeth were selected and sectioned into two halves. The artificial white spot lesions were created and resin-infiltration procedure was performed to seal the pores. The specimens immersed in the control subgroup showed an insignificant colour change (∆E) after 72 h. While significant differences in colour change among the experimental groups across time intervals (p<0.001), oral rinse groups (p<0.001), and the interaction between timeline and groups (p<0.001). All resin-infiltrated specimens showed colour differences after immersion in oral rinses with visually perceptible change. Although, Colgate Plax and Oral B oral rinses demonstrated the highest and lowest colour change, respectively in the initial 24 h. However, at 72 h and 7 d time-points, Listerine oral rinse demonstrated the highest colour change, while the lowest values were observed in Oral-B oral rinse. The use of Listerine should therefore be cautiously advised in resin-infiltrated cavities.

color change, oral rinses, resin-infiltration, white spot lesion