Evaluation of interleukin-1β level and oxidative status in gingival crevicular fluid during rapid maxillary expansion.

Objectives: The levels of interleukin-1β (IL-1β), nitric oxide (NO), total antioxidant capacity (TAC), and total oxidant status (TOS) in gingival crevicular fluid (GCF) were determined during rapid maxillary expansion (RME) treatment.

Materials And Methods: Fourteen patients (10-13 years old) were included. A modified hyrax appliance was used for the treatment.