Mechanical sensitivity and psychological factors in patients with burning mouth syndrome
The aim of this study was to compare mechanical sensitivity on the tongue using quantitative sensory testing (QST) and psychological factors using the General Health Questionnaire (GHQ) between burning mouth syndrome (BMS) patients and healthy participants.
Materials and methods
Participants comprised 20 female BMS patients (68.1 ± 7.4 years) and 20 healthy females (65.4 ± 4.6 years). Psychological factors were evaluated with GHQ. Tactile detection thresholds (TDT) and filament-prick pain detection thresholds (FPT) were used to evaluate mechanical sensitivity on the tongue in all participants. TDT and FPT were measured on the tongue within both the painful area and the non-painful area in BMS patients, and on the tongue on both sides in healthy participants. As controls, TDT and FPT were measured with Semmes-Weinstein monofilaments on the skin of the mentum and palm in all participants.
GHQ scores were significantly higher in BMS patients than in healthy participants (P = 0.024). No significant differences in TDT or FPT on the tongue, mentum, or palm were seen between BMS patients and healthy participants (P > 0.05). BMS patients showed no significant differences in TDT or FPT between the painful and non-painful areas on the tongue (P > 0.05). There were no significant correlations among TDT/FPT and GHQ score in BMS patients (P > 0.05).
These findings could indicate a more important role for psychological factors than mechanical sensitivity in BMS pathophysiology.
Pain on the tongue in elderly female patients with BMS may be more related to psychological factors.
KeywordsBurning mouth syndrome Psychological factors Primary orofacial pain Tongue Quantitative sensory testing
This study was supported by the Technology of Japan and a grant-in-aid for scientific research (17K11785 and 17K11786) from the Japanese Society for the Promotion of Science.
Compliance with ethical standards
Ethical approval of the protocol was provided by the Department of Oral Function and Rehabilitation, Nihon University School of Dentistry at Matsudo, Japan. This protocol was approved by the Ethics Committee of Nihon University School of Dentistry at Matsudo (EC 11-024), based on the guidelines set forth in the Declaration of Helsinki II.
Conflict of interest
The authors declare that they have no competing interests.
Informed consent was obtained from all participants before the experiment.
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