Abstract
The putative causes of bruxism are multifactorial and there are no definite measures for bruxism management. The aim of this study was to evaluate the efficacy of biofeedback therapy on sleep bruxism, compared with occlusal splint. Twenty-four volunteers with sleep bruxism were divided into two groups: the GTB group that were treated with biofeedback therapy (n = 12) and the GTO group that were treated with occlusal splint (n = 12). A mini pressure sensor integrated with a monitoring circuit by use of a maxillary biofeedback splint was fabricated. To foster the relaxation of the masticatory muscles and the nervous system, the wireless device received signals from bruxism events and vibrations alerted the bruxer when the threshold was exceeded. Total episodes and average duration of bruxism events during 8 hours of sleep were analyzed with the monitoring program (TRMY1.0). After 6 and 12 weeks, the episodes (P = 0.001) and duration (P < 0.05) in the GTB group declined dramatically. In contrast, there were no significant differences in the GTO group after the treatment (P > 0.05). Furthermore, the episodes had significant differences between the GTB group and the GTO group after the same period of treatment (P = 0.000). The results suggest that biofeedback therapy may be an effective and convenient measure for mild bruxers, when compared with occlusal splint therapy. The mini wireless biofeedback method may be of value for the diagnosis and management of bruxism in the future.
Highlights
Bruxism is an oral parafunction characterized by clenching and grinding of teeth during wakefulness or sleep
The purpose of this study is to evaluate the efficacy of biofeedback therapy on Sleep bruxism (SB) via a mini wireless biofeedback device contrasted with occlusal splint
There were no significant differences between GTB and GTO, both in total episodes (P50.883) and duration of bruxism events (P50.907)
Summary
Bruxism is an oral parafunction characterized by clenching and grinding of teeth during wakefulness or sleep. According to the International Classification of Sleep Disorders Version 2 (ICSD-2), SB is classified as a sleep related movement disorder usually associated with sleep arousals[9]. Both AB and SB may be associated with various movements and degenerative disorders, such as oromandibular dystonia and Huntington s disease[10]. The major negative impacts of bruxism on health include tooth attrition and destruction[12]; risk factors associated with increased mechanical and/or technical complications in prosthodontic rehabilitation[13]; contribution to (not simple cause-effect relationship) chronic masticatory myofascial pain[14,15]; exacerbation of temporomandibular disorders or induction of temporal tension headache; grinding sounds that may interfere with the sleep of family or life partners[16,17]
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