[Detection of Helicobacter pylori in oral cavity of patients with recurrent aphthous ulcer].

ABSTRACT

OBJECTIVE: To investigate the association of recurrent aphthous ulcer (RAU) with Helicobacter pylori (Hp) infection and digestive diseases. METHODS: Saliva samples were collected from 82 patients with RAU and 74 healthy volunteers for Hp detection with PCR. RESULTS: The positivity rates of HP differed significantly between RAU patients and healthy volunteers (43.9% vs 16.2%, P<0.001). In the 82 RAU patients, 22 (26.82%) were identified to have gastritis and peptic ulcer, whereas only 7 out of the 74 healthy volunteers (10.45%) had such digestive diseases, showing significant difference between them (P<0.01). CONCLUSION: Hp might in some way associate with RAU, which in turn is associated with an increased incidence of digestive diseases.