The given image seems more like tooth mark and injury to buccal mucosa.
Lymphadenopathy can be due to some insult to oral mucosa likely inflammation as the fatty hilum is maintained.
Next Steps
If lymph nodes persists, u can proceed with FNAC from the same.
Health Tips
If u r a smoker or tobacco chewer, u should quit it immediately as I can see u r very young right now, 23 yrs.