Validation of the Bitestrip versus polysomnography in the diagnosis of patients with a clinical history of sleep bruxism.
OBJECTIVE
This validation study compared an electromyography (EMG) device, Bitestrip, versus polysomnography in the diagnosis of sleep bruxism (SB).


METHODS
Forty-nine consecutive patients (32 women and 17 men, 41.2 ± 12.9 years old) with a clinical history of SB were included in the study from the Orofacial Pain Clinic, Faculty of Dentistry, Pontifical Catholic University of Rio Grande do Sul in Brazil.


RESULTS
Initially, we compared an SB positive/negative test result for both systems (agreement 87.8%, sensitivity 84.2%, positive predictive value 100%, and crude kappa 0.71). We then compared a 4-scale test (no, light, moderate, or severe bruxism) between the 2 methods (agreement 80.27%, weighted kappa 0.51, and Kendall W coefficient 0.575).


CONCLUSIONS
The Bitestrip can be considered as a moderate screening method for the diagnosis of SB, because it is more precise in detecting the presence or absence of SB but less precise in detecting its intensity.
Postgraduate Program in Dentistry, Faculty of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
Vivian Chiada
VC
Mainieri
Aline Cristina
AC
Saueressig
Marcos Pascoal
MP
Pattussi
Simone C
SC
Fagondes
Márcio Lima
ML
Grossi
D000328:Adult; D004576:Electromyography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017286:Polysomnography; D012680:Sensitivity and Specificity; D020186:Sleep Bruxism / Q000175:diagnosis*; D055815:Young Adult