Abstract
Sleep bruxism (SB) is a masticatory muscle activity during sleep characterized by teeth clenching or grinding and/or bracing or thrusting of the mandible. Morning headache is considered as a common symptom of SB; however, the relationship between SB and headache and its impact on patient's life is not clear. Therefore, the present study aimed to assess the relationship between SB using polysomnography with video/audio recording and Headache Impact Test-6 (HIT-6) scores. SB was evaluated in respondents by single-night diagnostic polysomnography with video/audio recording. The study found that Bruxism Episode Index was similar in the group with significant impact of headache on patient's life (HIT-6 score ≥ 50) and in group with little or no impact (HIT-6 score < 50). A statistically significant positive correlation was observed between bruxism associated with arousal and HIT-6 score (r = 0.51, p < 0.05) and between mixed bruxism and HIT-6 score (r = 0.58, p < 0.05) in the subgroup with phasic bruxism. The results indicated the relationship between SB and impact of severity of headache on the patient's life measured by HIT-6 is only modest. It was also found that the impact of severity of headache measured by HIT-6 is altered only in those with phasic bruxism and is associated with arousal. Further research should elucidate the factors influencing the relationship between SB and headache.Trial Registration: Clinical Trials NCT03083405, WMU1/2017, https://clinicaltrials.gov/ct2/show/NCT03083405
Highlights
Chronic headache defined as headache occurring on 15 or more days per month for at least 3 months is a major cause of pain and disability [1]
The present study aimed to assess the relationship between Sleep bruxism (SB) using polysomnography with video/audio recording and Headache Impact Test-6 (HIT-6) scores
HIT-6 subgroups did not differ in age and Body Mass Index (BMI)
Summary
Chronic headache defined as headache occurring on 15 or more days per month for at least 3 months is a major cause of pain and disability [1]. The global prevalence of headache has been estimated to be as much as 42% [2]. Sleep Bruxism and Headache head injury [1]. Sleep and headache have a complex and extensive relationship [3]. Sleep disturbances and stress are the most common headache triggers [4], and when these conditions coexist, they have an additive effect in patients with chronic headache [5]. Insufficient sleep is prevalent among subjects with tension-type headache and is linked to exacerbation of symptoms [6]. Poor sleep may contribute to increased sensitivity to pain, increasing the frequency of headache attacks. Around 15–74% of individuals with obstructive sleep apnea (OSA) suffer from morning headache [7], and morning headache are often unspecific
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