title: Endurance during chewing in whiplash-associated disorders and TMD.
abstract: We have previously shown an association between neck injury and disturbed jaw function. This study tested the hypothesis of a relationship between neck injury and impaired endurance during chewing. Fifty patients with whiplash-associated disorders (WAD) were compared with 50 temporomandibular disorders (TMD) patients and 50 healthy subjects. Endurance was evaluated during unilateral chewing of gum for 5 min when participants reported fatigue and pain. Whereas all healthy subjects completed the task, 1/4 of the TMD and a majority of the WAD patients discontinued the task. A majority of the WAD patients also reported fatigue and pain. These findings suggest an association between neck injury and reduced functional capacity of the jaw motor system. From the results, we propose that routine examination of WAD patients should include jaw function and that an endurance test as described in this study could also be a useful tool for non-dental professionals.
authors.affiliation: Department of Odontology, Clinical Oral Physiology, Umeå University, S-901 87 Umeå, Sweden.
authors.forename: B
authors.initials: B
authors.lastname: Häggman-Henrikson
authors.forename: C
authors.initials: C
authors.lastname: Osterlund
authors.forename: P-O
authors.initials: PO
authors.lastname: Eriksson
mesh_terms: D000293:Adolescent; D000328:Adult; D002638:Chewing Gum; D005157:Facial Pain / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000503:physiopathology; D008409:Mastication / Q000502:physiology*; D008410:Masticatory Muscles / Q000503:physiopathology; D008875:Middle Aged; D009119:Muscle Contraction / Q000502:physiology; D018763:Muscle Fatigue / Q000502:physiology; D010807:Physical Endurance / Q000502:physiology*; D012737:Sex Factors; D013705:Temporomandibular Joint Disorders / Q000503:physiopathology*; D013997:Time Factors; D014911:Whiplash Injuries / Q000503:physiopathology*
chemical_list: D002638:Chewing Gum