title: Prevalence and risk factors of sleep bruxism and wake-time tooth clenching in a 7- to 17-yr-old population.
abstract: Sleep-related bruxism (SB) and wake-time tooth clenching (TC) have been associated with temporomandibular disorders (TMDs), headache, and sleep and behavioral complaints. This study aimed to assess the prevalence and risk factors of these signs and symptoms in a 7- to 17-yr-old population (n = 604) seeking orthodontic treatment. Data were collected by questionnaire and by a clinical examination assessing craniofacial morphology and dental status. Sleep-related bruxism was reported by 15% of the population and TC was reported by 12.4%. The SB group (n = 58) was mainly composed of children (67.3% were ≤12 yr of age) and the TC group (n = 42) was mainly composed of adolescents (78.6% were ≥13 yr of age). The craniofacial morphology of over 60% of SB subjects was dental class II and 28.1% were a brachyfacial type. Compared with controls (n = 220), SB subjects were more at risk of experiencing jaw muscle fatigue [adjusted OR (AOR) = 10.5], headache (AOR = 4.3), and loud breathing during sleep (AOR = 3.1). Compared with controls, TC subjects reported more temporomandibular joint clicking (AOR = 5), jaw muscle fatigue (AOR = 13.5), and several sleep and behavioral complaints. Sleep- and wake-time parafunctions are frequently associated with signs and symptoms suggestive of TMDs, and with sleep and behavioral problems. Their clinical assessment during the planning of orthodontic treatment is recommended.
authors: Université de Montréal, QC, Canada. mclotildecarra@gmail.com
authors: Maria Clotilde
authors: MC
authors: Carra
authors: Nelly
authors: N
authors: Huynh
authors: Paul
authors: P
authors: Morton
authors: Pierre H
authors: PH
authors: Rompré
authors: Athena
authors: A
authors: Papadakis
authors: Claude
authors: C
authors: Remise
authors: Gilles J
authors: GJ
authors: Lavigne
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000502:physiology; D000367:Age Factors; D001288:Attention; D002012:Bruxism / Q000453:epidemiology*; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006261:Headache / Q000453:epidemiology; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000453:epidemiology; D008410:Masticatory Muscles / Q000503:physiopathology; D009058:Mouth Breathing / Q000453:epidemiology; D018763:Muscle Fatigue / Q000502:physiology; D009971:Orthodontics, Corrective / Q000706:statistics & numerical data; D015995:Prevalence; D011792:Quebec / Q000453:epidemiology; D012307:Risk Factors; D012891:Sleep Apnea Syndromes / Q000453:epidemiology; D020186:Sleep Bruxism / Q000453:epidemiology*; D012894:Sleep Stages / Q000502:physiology; D012893:Sleep Wake Disorders / Q000453:epidemiology; D012913:Snoring / Q000453:epidemiology; D013705:Temporomandibular Joint Disorders / Q000453:epidemiology; D057085:Tooth Wear / Q000453:epidemiology