Stress can reduce the body’s immunity, thus making the person more susceptible to oral infections. Inflammation of the gums and its surrounding structures (gingivitis and periodontitis) are seen more commonly in patients who are stressed and mentally disturbed. Other oral diseases commonly seen among stressed individuals are oral lichen planus (OLP), aphthous ulcer
, burning mouth syndrome (BMS), and myofascial pain dysfunction syndrome (MPDS). Stress is also a significant factor in causing teeth grinding and clenching (bruxism). Bruxism causes the top layer of the teeth to wear off and become sensitive. The excessive force exerted on the teeth also causes problems in the temporomandibular joint (TMJ). The oral cavity of a stressed person becomes dry (xerostomia), which increases the chances of developing dental caries.