Associação entre sangramento gengival interproximal com fricção do fio dental e fluído gengival em adultos sem histórico de periodontite

Abstract

Dental floss rubbed against the gums (GF) used as a diagnostic method of interproximal gingivitis seems to be more sensitive in detecting gingival bleeding compared to periodontal probe in sites with established point of contact and no attachment loss. The aim of this study was to evaluate the discriminatory ability of GF to distinguish sites with different inflammatory subclinical status by comparing the volume of the gingival crevicular fluid (VGCF) in sites with and without gingival bleeding after using GF. Interproximal bleeding contralateral sites (test sites) and not bleeding (control sites) with GF, both with the absence of bleeding on probing, were identified in 49 adult subjects without history of periodontitis. After 24-48 hours, the VGCF was measured with absorbent paper strips in the test and control sites. Of a total of 172 sites evaluated, test sites had a significantly higher VGCF than control sites (GF+ 38 [26.5–68] versus GF- 25 [15.7–51.25]; P<0.001, Wilcoxon test). This difference remained for anterior sites (GF+ 37 [23–66] versus GF- 21 [14–45]; P<0.001, Wilcoxon test) and posterior sites (GF+ 46 [28–92] versus GF- 34 [21–70]; P=0.04, Wilcoxon test). We conclude that GF has discriminatory ability to identify sites with different subclinical inflammatory status, with the presence of bleeding after GF associated with higher VGCF and amount of subclinical inflammation.