Occurrence, presence and severity of bruxism in severe acquired brain injury

Simple F. Kothari, Anu Priyadarshini Devendran, Astrid Bisgaard Sørensen, Jørgen Feldbæk Nielsen, Peter Svensson, Mohit Kothari

Publikation: KonferencebidragKonferenceabstrakt til konferenceForskningpeer review


Objective: Excessive jaw muscle activity is a frequent complication after acquired brain injury (ABI). The study aimed to identify the occurence and severity of jaw muscle activity and its association with altered state of consciousness in patients with ABI.
Methods: A total of 14 severe ABI patients with varied altered state of consciousness were recruited. A single-channel electromyographic (EMG) device was used to assess the jaw muscle activity for three consecutive nights during week 1 and week 4 following admission. Differences in number of EMG episodes/hr between week 1 and 4 were analyzed using non-parametric tests and association between the EMG activity and altered state of consciousness were analyzed using Spearman´s correlation test.
Results: 9/14 (64%) of patients showed indications of bruxism (cut-off: >15 EMG episodes/hr). The average EMG episodes/hr at admission were 44.5±13.6 with no significant changes after week 4 of admission (43±12.9; P=0.917). The EMG episodes/hr ranged from 2-184 during week 1 and 4-154 during week 4. There were no significant correlations between the number of EMG episodes/hr during the 3 nights and the individuals altered state of consciousness during week 1 and week 4.
Conclusion: Patients with ABI had a conspicuously high but variable level of jaw muscle activity which could potentially be associated with adverse effects such as excessive tooth wear, headaches and pain in jaw muscles. Single-channel EMG devices can record jaw muscle activity early in the hospitalization period and might be helpful tools for early detection of bruxism in ABI patients.
Publikationsdato23 jun. 2023
StatusUdgivet - 23 jun. 2023
BegivenhedInternational Association of Dental Research - Bogota, Colombia
Varighed: 20 jun. 202324 jun. 2023


KonferenceInternational Association of Dental Research


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