Little vertical line like white patch on cheek near wisdom teeth should i worry about dentist says everyone have it but if it continues it becomes something dangerous?

regular checkup is all that is needed Overwhelming chances are you will be fine. Keep up the chckups.

Not being able to see/touch/examine the line you are describing means that we can't tell you if it is normal or not. Your Dentist has 4 years of intensive study o help answer your question. If you would like a 2nd opinion, see a specialist Oral Surgeon, Oral Pathologist, or Otolaryngologist.

If your wisdom is not fully erupted, a white area is normal if you bite on your gum in that area. This is called a KERATOSIS from trauma. Also a white lesion called a LEUKOPLAKIA could be present which is precancerous. See your dentist for an exam to see if tooth should be extracted or for a biopsy.