Efficacy of biofeedback therapy via a mini wireless device on sleep bruxism contrasted with occlusal splint:a pilot study

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 512） and the GTO group that were treated with occlusal splint（n 512）.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 during8 hours of sleep were analyzed with the monitoring program（TRMY1.0）.After 6 and 12 weeks,the episodes（P 50.001） 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 5 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.

Work-family conflict and job burn-out among Chinese doctors:the mediating role of coping styles

Background Burn-out among doctors threatens their own health, and that of their patients. To identify risk factors of the doctor burn-out is vital to improving their health and increasing the quality of healthcare services. This study aims to explore the relationship between work-family confict （WFC） and burn-out among Chinese doctors and the mediating role of coping styles in this relationship.Methods A cross-sectional survey was conducted in China, with a questionnaire packet which consisted of the Chinese Maslach Burnout Inventory （CMBI）, WFC Scale and the Simplifed Coping Style Questionnaire （SCSQ）. A total of 2530 doctors participated in the survey. Correlation analysis was performed to explore the relationship between CMBI, WFC and SCSQ scores. A linear regression model was set to determine the mediating role of coping styles on the relationship between WFC and burn-out.Results Doctors who had higher scores on work interfering with family confict, reported more emotional exhaustion （r=0.514, P〈0.001） and had a sense of accomplishment （r= 0.149, P〈0.001）. Simultaneously, family interfering with work （FIW） was positively associated with all dimensions of burn-out （r=0.213, 0.504, 0.088, respectively, P〈0.001）. Coping styles had partial, complete and even mediating effects on the relationship between WFC and burn-out among Chinese doctors.Conclusions WFC was correlated with burn-out, and coping style was a mediator in this relationship among Chinese doctors. Coping style was a positive resource against burn-out.