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Updated: Jun 10, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Comparison of oral mucosal pH values in bulimia nervosa, GERD, BMS patients and healthy population
D J Aframian1, M Ofir, R Benoliel
1Department of Oral Medicine, Salivary Gland Clinic and Saliva Diagnostics Laboratory, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel. dorona@cc.huji.ac.il
Objectives:
The aim of this study was to compare the oral mucosal pH in healthy individuals to patients with gastroesophageal reflux disease (GERD), Bulimia nervosa (BN) and burning mouth syndrome (BMS).
Subjects And Methods:
Using a flat pH meter sensor, pH levels were established in eight mucosal sites in 26 healthy individuals, 26 GERD patients, 22 BN patients and 29 BMS patients.
Results:
A significantly lower pH was found in the BN and GERD groups (6.38 ± 00.45, 6.51 ± 0.32 respectively, P < 0.05) and a higher, but non-significant, pH level in the BMS group (7.01 ± 0.34, P > 0.05) compared with the control (C) group (6.82 ± 0.33).
Conclusions:
BMS patients showed no pH differences from C group. The mucosa of BN and GERD patients was significantly acidic relative with controls; thus this simple technique may serve as a diagnostic tool for identifying gastro-esophageal conditions.
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