Helo, Thanks for sharing your concern in this forum, What you are having is medically termed as bruxism..I think in night time you are facing this problem...it generally due to stress,anxiety,bad dreams etc... You are caonstantly getting traumatic bite on your tongue...which may produce traumatic ulcer... I would suggest you consult with Dentist as soon as possible...you have to decrease your stress.... Proper clinical examination is required for you... If there is any sharp cusp then grinding can be done... You may have malocclusion too...it has to be corrected...as your teeth are getting fractured so proper x-ray is required to see the extent of fracture... Don t neglect this may lead to temporomandibular joint pain.... Get your proper treatment done... Wish you good health... Regards....