Biochemical and clinical comparisons of segmental maxillary posterior tooth distal movement between two different force magnitudes.

Background/objectives: Maxillary tooth distal movement is a treatment option for Class II malocclusion. This prospective clinical study (split-mouth design) was aimed to compare chondroitin sulphate (CS) levels in gingival crevicular fluid (GCF), the rates of tooth movement, and patient pain and discomfort during segmental maxillary posterior tooth distal movement using either 120 or 180 g of retraction force.

Materials And Methods: Twenty patients (6 males and 14 females; aged 18.