TY - JOUR PY - 2017// TI - Does sleep bruxism contribute to headache-related disability after mild traumatic brain injury? A case-control study JO - Journal of oral and facial pain and headache A1 - Suzuki, Yoshitaka A1 - Arbour, Caroline A1 - Khoury, Samar A1 - Giguère, Jean-François A1 - Denis, Ronald A1 - de Beaumont, Louis A1 - Lavigne, Gilles J. SP - 306 EP - 312 VL - 31 IS - 4 N2 - AIMS: To explore whether traumatic brain injury (TBI) patients have a higher prevalence of sleep bruxism (SB) and a higher level of orofacial muscle activity than healthy controls and whether orofacial muscle activity in the context of mild TBI (mTBI) increases the risk for headache disability.

METHODS: Sleep laboratory recordings of 24 mTBI patients (15 males, 9 females; mean age ± standard deviation [SD]: 38 ± 11 years) and 20 healthy controls (8 males, 12 females; 31 ± 9 years) were analyzed. The primary variables included degree of headache disability, rhythmic masticatory muscle activity (RMMA) index (as a biomarker of SB), and masseter and mentalis muscle activity during quiet sleep periods.

RESULTS: A significantly higher prevalence of moderate to severe headache disability was observed in mTBI patients than in controls (50% vs 5%; P =.001). Although 50% and 25% of mTBI patients had a respective RMMA index of ≥ 2 episodes/hour and ≥ 4 episodes/hour, they did not present more evidence of SB than controls. No between-group differences were found in the amplitude of RMMA or muscle tone. Logistic regression analyses suggested that while mTBI is a strong predictor of moderate to severe headache disability, RMMA frequency is a modest but significant mediator of moderate to severe headache disability in both groups (odds ratios = 21 and 2, respectively).

CONCLUSION: Clinicians caring for mTBI patients with poorly controlled headaches should screen for SB, as it may contribute to their condition.

Language: en

LA - en SN - 2333-0384 UR - http://dx.doi.org/10.11607/ofph.1878 ID - ref1 ER -