A study published in the Journal of Oral Rehabilitation by a group of scientists in Israel states that for people suffering from social anxiety disorder, the risk of bruxism (teeth clenching, grinding) and oral parafunctional hyperactivity (nail biting, pencil biting, gum chewing, small jaw movements without teeth contact, etc.) is elevated. This could lead to tooth wear, jaw pain, and fracture.
According to the National Institute of Mental Health, anxiety disorder affects about 18% of the US population. A group of 87 studies conducted in 44 countries reported that up to 28.3% of the study population was affected by this disorder. A form of anxiety disorder is social phobia and is also called social anxiety disorder.
Social anxiety disorder is marked by excessive self-consciousness in everyday social situations, like meeting strangers, or it could encompass a generalized anxiety because of which a person is only able to interact with his/her family.
Social anxiety, along with selective serotonin reuptake inhibitors (SSRIs) prescribed for depression, is considered an aggravating factor for teeth grinding or bruxism. There are two types of bruxism:
With this background, Hermesh and fellow scientists looked at how anxiety, depression, and SSRI influenced bruxism in people with social phobia. The study population of 75 (both men and women) was divided into two groups:
A. 35 healthy individuals or control.
B. 40 individuals diagnosed as having social phobia. In this population:
The participants were requested to fill out a questionnaire and also subjected to dental examination.
The study results showed:
Thus, social phobia and not depression, appears to be associated with a higher risk of both awake and sleep bruxism, as well as an oral parafunctional activity. In the authors’ opinion, “Dental and anxiety screening may improve the prognosis psychiatric and dental patients. Effective treatment of SP (social phobia) may mitigate bruxism.”
As the authors state, whether other chronic anxiety disorders like post-traumatic stress disorder, generalized anxiety disorder, panic disorder, obsessive-compulsive disorder, etc., would lead to dental problems remains to be studied.
Written by Mangala Sarkar Ph.D.
Primary Reference:
Hermesh, H., Schapir, L., Marom, S., Skopski, R., Barnea, E., Weizman, A., & Winocur, E. (2015). Bruxism and oral parafunctional hyperactivity in socialphobia outpatients. Journal of Oral Rehabilitation, 42, 90-97.
Additional References:
Anxiety Disorders. (n.d.). Retrieved May 6, 2015, from http://www.nimh.nih.gov/health/publications/anxiety-disorders/index.shtml?rf=53414
Baxter, A., Scott, K., Vos, T., & Whiteford, H. (2013). Global prevalence of anxiety disorders: A systematic review and meta-regression. Psychological Medicine, 43(5), 897-910.
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