hey it just a healing tissue after a trauma due to opposing sharp tooth,
just visit dentist nearby and get your occlusion checked and if you see any sharp edges it can be felt with your tongue also. justget them smoothned by air roter it's a job of less than 10 seconds and will not hurt you in any way.
Next Steps
visit dentist for tooth edge smoothning.
Health Tips
atrition happens due to long term use of teeth and grinding or bruxism so nothing wrong it part of use and wear n tear after prolnged use of teeth.