thanks for asking your query
is parafunctional habit of teeth grinding,usually while sleeping
during bruxism you may bite on your cheeks leading to formation of white spots
causes of bruxism are stress
,abnormal bite or missing or crooked teeth.
teeth grinding is harmful in a way it may results in fracturing,loosening and loss of teeth.
along with teeth it may effect your jaw,Tmj
and muscle fatique
treatment includes to wear nightguard,it prevents clenching of teeth during sleep
is the cause then take sedatives/antidepressant (after consulting physician)
train yourself not to grind/clench teeth during awake hours
hope this will help.