Relationships between Intermittent Locking History and Self-Reported Bruxism in Temporomandibular Joint

Abstract

Purpose: To evaluate aggravating factors of intermittent locking among temporomandibularjoint using magnetic resonance imaging (MRI) and diagnostic criteria for temporomandibulardisorder (DC/TMD) diagnosis.Methods: A retrospective analysis was conducted of 35 patients with intermittent locking historybut normal intra-articular findings between September 2012 and June 2015 in Kyung HeeUniversity Dental Hospital. A standardized DC/TMD assessment was performed on subjectswith MRI findings. Clinical findings were assessed on the basis of maximum mouth opening(active & passive), self-reported habits, patients’ age, gender, systemic diseases at the initialvisit. First, chi square test was used to examine differences with variables and then risk factorsfor intermittent locking were assessed using multivariate logistic regression.Results: Self-reported bruxism was strongly associated with intermittent locking history.Conclusions: The new DC/TMD protocol is intended for use within any clinical setting and supportsthe full range of diagnostic activities from screening to definitive evaluation and diagnosis.Self-reported sleep bruxism has been associated with a higher likelihood of intermittentlocking. Comorbidity is therefore a factor that must be assessed. It is necessary to consider theamount of contact of the teeth and the duration. PU - THE KOREAN ACADEMY OF OROFACIAL PAIN AND ORAL MEDICINE