Hello
Cheek biting is commonly seen due to sharp tooth edges, improper bite (occlusion), erupting wisdom tooth, stress related habit or accidental trauma while chewing.
Usually it heals on its own within 5–7 days. You can apply a topical oral ulcer gel for relief and do warm salt water rinses 3–4 times daily. Avoid spicy, hot and hard foods till healing occurs.
If cheek biting is happening repeatedly, it is advisable to visit a dentist for oral examination. Smoothing of sharp tooth edges or bite correction may be required.
Next Steps
Kindly observe the area for healing. Maintain good oral hygiene and avoid chewing from that side for few days. If swelling, severe pain or ulcer does not heal within one week, consult a dentist for proper evaluation and treatment.
Health Tips
Avoid repeatedly touching or biting the same area as it can delay healing. If you notice a persistent white/red patch, growing swelling or difficulty in opening mouth, seek dental consultation immediately.