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Ultrasonographic and electromyographic evaluation of three types of occlusal splints on masticatory muscle activity, thickness, and length in patients with bruxism. 2023

Bora Akat, and Sinem Atay Görür, and Ayben Bayrak, and Hakan Eren, and Necati Eres, and Yezdan Erkcan, and Mehmet Ali Kılıçarslan, and Kaan Orhan
Department of Prosthodontics, Faculty of Dentistry, University of Ankara, Ankara, Turkey.

To evaluate occlusal splint type differences in patients with bruxism. Seventeen controls and 51 patients were divided into three subgroups, each assigned to use a different occlusal splint (hard, soft, or semi-soft) for 3 months and assessed by ultrasonography and electromyography (EMG) before (BT) and 3 months after treatment (AT). EMG values in all of the occlusal splint groups were significantly lower AT than BT (p < 0.05). BT and AT EMG values in the control group did not differ. Mean muscle thicknesses in bruxism patients was greater than in controls, and the greatest muscle thickness changes occurred with the hard occlusal splint (p < 0.05). A decrease in EMG activity occurred with all three splint types and was most prominent in the hard occlusal splint group. Ultrasonographic measurements of muscle length and thickness should be used alongside EMG to measure muscle activity in bruxism patients.

UI MeSH Term Description Entries
D008406 Masseter Muscle A masticatory muscle whose action is closing the jaws. Masseter Muscles,Muscle, Masseter,Muscles, Masseter
D008410 Masticatory Muscles Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed) Masticatory Muscle,Muscle, Masticatory,Muscles, Masticatory
D002012 Bruxism A disorder characterized by grinding and clenching of the teeth. Bruxomania,Teeth Grinding Disorder,Disorder, Teeth Grinding,Grinding Disorder, Teeth,Teeth Grinding Disorders
D004576 Electromyography Recording of the changes in electric potential of muscle by means of surface or needle electrodes. Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013165 Splints Rigid or flexible appliances that are used to maintain a displaced or movable part in position, or to maintain the position of and protect an injured part. Dynamic Orthoses,Dynamic Splint,Dynamic Splinting,Dynamic Splints,Static Orthoses,Static Splint,Static Splinting,Static Splints,Dynamic Splintings,Splint,Splint, Dynamic,Splint, Static,Splinting, Dynamic,Splinting, Static,Splints, Dynamic,Splints, Static,Static Orthose
D017090 Occlusal Splints Rigid or flexible appliances that overlay the occlusal surfaces of the teeth. They are used to treat OBSTRUCTIVE SLEEP APNEA, clenching, BRUXISM, and their sequelae, and to provide temporary relief from muscle or temporomandibular joint pain. Dental Night Guard,Mandibular Advancement Devices,Mandibular Advancement Splints,Splints, Occlusal,Advancement Device, Mandibular,Advancement Devices, Mandibular,Advancement Splint, Mandibular,Advancement Splints, Mandibular,Dental Night Guards,Device, Mandibular Advancement,Devices, Mandibular Advancement,Guard, Dental Night,Guards, Dental Night,Mandibular Advancement Device,Mandibular Advancement Splint,Night Guard, Dental,Night Guards, Dental,Occlusal Splint,Splint, Mandibular Advancement,Splint, Occlusal,Splints, Mandibular Advancement

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