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KMID : 0362720050430060416
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Journal of the Korean Dental Association
2005 Volume.43 No. 6 p.416 ~ p.427
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The relationship between etiologic factors and stress in temporomandibular disorder patients by heart rate variability test
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Jee Yu-Jin
Song Hyun-Chul
Kim Eung-Kwon
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Abstract
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Aims : This study assessed of the psychosocial mental factors such as stress, anxiety, and depression in temporomandibular disorder (TMD) patients. The method used in this study was assessment of the autonomic nervous system using the Heart rate variability (HRV), which measures its function objectively and reliably. This study proposes a new diagnostic method for psychosocial factors in TMD patients.
Methods : Forty patients with TMD were selected as the experimental group, and 40 age-matching healthy individuals without TMD symptoms were selected as the control group. Using the 5-minute electrocardiographic (ECG) recordings, the function of the autonomic nervous system (ANS) was assessed by analyzing the HRV in the experimental and control group. In TMD group, patients with a dysfunction or imbalance of the ANS were considered to have psychosocial factors.
Results : HRV analysis detected an imbalance of the ANS in 34 patients in the TMD group and 23 subjects in the control group. In addition, the TMD group showed a dysfunction of the ANS and parasympathetic hyperactivity, which indicated that the TMD patients were prone to depression and were under more physical stress. In the TMD group, together with such psychosocial factors, trauma, anatomic factors have been detected as etiologic factors. In particularly, psychosocial factors have been detected in 85% (34 patients) and detected as a single factor in 25 % (10 patients).
Conclusion: Psychosocial factors play an important role in TMD. A means to improve the efficacy of TMD treatment is to evaluate the psychosocial condition and to apply the appropriate treatment. By applying HRV analysis, the psychosocial condition of the TMD patients could be evaluated. This method is more useful than previous methods (questionnaire) to evaluate the personality and emotional state of individuals.
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KEYWORD
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Temporomandibular disorder, Psychosocial factors, stress, Autonomic nerve function, Heart rate variability, depression
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