This review of the prevalence of tooth grinding and/or clenching in children and adolescents with neurodevelopmental disorders and other developmental anomalies included 77 studies from 2 countries. However a large proportion of the studies were at high risk of bias so the findings need to be interpreted with caution.
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The review of the use of botulinum toxin type A injections in the management of primary bruxism in adults included 10 studies. Only 6 of the included studies were RCTs and the studies were generally small are very hetrogeneous so additional well designed and conducted RCTs are needed.
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Only 5 small low quality studies were included in this review of botulinum toxin (BoNT-A ) injections for sleep bruxism. 3 of the included studies were RCTs and while a potential benefit from use of BoNT-A treatment was suggested the findings should be treated very cautiously.
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