Dry Mouth. Dry mouth (xerostomia) is commonly caused as a side effect when taking medicines. The salivary glands do not produce enough saliva thus leaving the mouth dry. But dry mouth can also be stressed induced. If not treated, dry mouth can lead to cavities and bad breath.
Bruxism. The habit of tooth grinding (bruxism) is often attributed to stress. An interesting part of it is that, when stressed, we often engage in tooth grinding unconsciously at night when sleeping. Bruxism can lead to cracked teeth andor facial pain.
