Choice of biomaterials-Do soft occlusal splints influence jaw-muscle activity during sleep? A preliminary report

► Tested if choice of biomaterials for occlusal splints influences biological outcome such as jaw-muscle activity during sleep. ► Jaw-muscle activity during sleep was decreased by wearing hard-material occlusal splint. ► Jaw-muscle activity during sleep was not influenced by wearing soft-material occlusal splint. ► This specific choice of biomaterials may have impact on the neurobiological regulation of jaw-muscle activity during sleep.