this is from spur-star33 Geographic tongue (http://www.mayoclinic.com/health/geographic-tongue/DS00819) if anyone has a problem like this contact a oral pathologist usually located at dental universities.
have you found a conclusion to this problem because in the mornings i get thin white lines on tip of tongue that seem to line up with between teeth
Have you asked a dentist about it? He may want you to have it biopsied just as a precaution. Rinse with warm salt water in that area, that may help it to heal faster. You may also see if you can have the rough tooth smoothed down so that it doesn't continue to irritate the area.