Change in the gingival fluid volume during maxillary canine retraction

Jonas CAPELLI JR., Rivail FIDEL JUNIOR, Carlos Marcelo FIGUEREDO, Ricardo Palmier TELES

Introduction: In the analysis of the pressure-tension theory of tooth movement, the application of an orthodontic force causes gradual displacement of fluids of the periodontal ligament, followed by distortion of the cells and extracellular matrix. Objectives: This study evaluated the gingival fluid volume on the mesial and distal aspects of the maxillary canines of 14 patients (3 males and 11 females) submitted to orthodontic movement. Methods: The fluid was collected using standard absorbent paper strips (PeriopaperTM) and the fluid volume was determined using the instrument Periotron™ at seven different periods (day -7, day 0, 1 hour, 24 hours, 14 days, 21 days, 80 days). The Friedman test was applied to compare the data achieved (p < 0.01 and p < 0.05). Results: The results revealed a significant change in the gingival fluid volume with time on both the pressure side (p < 0.001) and the tension side (p < 0.01). On the pressure side, the gingival fluid volume was significantly lower at the periods 0 (p < 0.01) and 24hs (p < 0.001) compared to the period 80 days.

Keywords: Gingival sulcus. Orthodontic movement. Inflammation.

Friday, April 19, 2024 10:03