People often complain about pain in their joints, (just outside the ear) and headaches. That is because they clench or grind their teeth during the night. This parafuctional habbit is called bruxism and is usually caused from stess. We observe bruxism
during day time too, but that is something a person can control. The problem is during the night grinding when people grind or clench their teeth subconsiously in their sleep.
At this point we have to make clear that teeth- grinding is the result of our chewing musles fuction (Maseter, temporalis). The night guard helps the musles to relax by leading them into their rest position. The night guard is made of a hard material 2-3mm thick.
To fabricate the guard , the lab needs impressions of the upper and lower jaw and a bite of their central relation. After the night guard is delivered from the lab a few days later we need to calibrate the occlusion. To do the whole procedure the dentist must have the prober training. At the begining using the night guard may seem uncomfortable but once you get use to it you cant sleep without it.