Abstract
We called cast which is caused by the teeth and which are often seen at the edge of the tongue “Dental impression” and we investigated its occurrence. We considered that it might occur due to strained lingual muscles and the masseteric muscle. A dental impression of the lower lip is rarely observed, but almost all of the reported cases demonstrating this have been under strong stress. A dental impression of the edge of the tongue is often observed if you pay close attention, and many of these cases have been reported to be under stress. A dental impression was most often observed in patients with an abnormal sensation of the pharynx and larynx. We therefore considered that one of the reasons for such an occurrence tends to be due to the fact that the oral cavity of such patients tends to be under negative pressure, because they often swallow their saliva in order to recognize their abnormal sensation. Many of the patients with dental impression often complain of a stiff shoulders or headache pain, and 60% of the cases that presented with both symptoms showed type III or IV CMI. The patients demonstrating dental impression tend to rarely complain of recurrent stomatitis. In contrast, the patients who complain of recurrent stomatitis often present with a dental impression. Of the cases that presented with both symptoms, 75% showed either type III or IV CMI.
