What Can Cause a Bump on the Roof of the Mouth?

Your dentist can often explain why bumps appear on the roof of your mouth when they examine your teeth. 
Key takeaways: 
- Burns, injuries and irritations can cause a bump to form. 
- Sores, cold sores and viruses can create blisters and bumps. 
- Epstein Pearls are cysts that appear briefly in mouths of some newborns. 
Although oral cancer is rare, a sore that doesn't heal in 2 weeks should be checked by a doctor. 
"...these extra teeth usually pop up just behind other teeth, but sometimes they can appear further back toward the roof of the mouth." 
Article: 
https://www.medicalnewstoday.com/articles/323063.php