RESUMO
Objective To explore flora of patients with recurrent oral ulcer,to analyze the relationship between oral microecology and recurrent oral ulcer.Methods The saliva of 20 patients with recurrent oral ulcer,21 patients with recurrent oral ulcer healing,20 healthy volunteers were collected.Gb marked as gram-negative bacilli,Gb+marked as gram-positive bacteria,Gc marked as gram-negative cocci,Gc+ as standard standard of Gram-positive cocci.The oral flora was quantitatively analyzed.Neisseria,Streptococcus,Wei Rongshi bacteria content in the saliva were analyzed in the three groups.The oral microecology changes was studied.Results Wei Rong bacteria and streptococci content value in the ulcer group were significantly lower than the healthy control group (P ＜ 0.05).Neisseria and Wei Rong bacteria content between healing group and ulcer group had significant differences (P ＜ 0.05).A streptococci value of the healing group was significantly lower than the healthy control group(P ＜ 0.05).Conclusion Recurrent oral ulcer has correlation with oral microecology,Wei Rongshi bacteria content is closely related with the incidence of recurrent oral ulcer and may maintain the stable of oral environment.