A dental hematoma is a small bruise or blood collection under the skin or inside the mouth. It often happens after an injection, tooth extraction, or bump to the mouth. It usually heals on its own in 1–2 weeks.
For the First 24 Hours
- Use a cold compress or ice pack on the swollen area for 15 minutes on, 15 minutes off to reduce bleeding and swelling.
- Do not apply heat or massage the area.
- Avoid touching or pressing on the swollen spot.
- Do not take aspirin, as it may increase bleeding.
- Eat soft, cool foods (yogurt, pudding, mashed potatoes).
- Keep your head elevated when resting to reduce swelling.
After 24 Hours
- Switch to a warm compress (a clean cloth dipped in warm water) for 10–15 minutes, 3–4 times per day. This helps the body absorb the blood faster.
- Continue to eat soft foods and chew on the opposite side.
- You may take acetaminophen (Tylenol) or ibuprofen (Motrin/Advil) for pain as directed.
- Rinse gently with warm salt water (½ teaspoon salt in 1 cup of warm water) after meals to keep the area clean.
Keep the Area Clean
- Brush your teeth carefully and avoid brushing directly over the swollen spot.
- Maintain good oral hygiene to prevent infection.
Call the Dentist If You Notice:
- Swelling that gets larger or more painful
- Redness, warmth, or pus from the area
- Fever or feeling unwell
- Trouble opening your mouth, swallowing, or breathing (go to the ER immediately)
What to Expect
Mild swelling or color changes (red, purple, blue, then yellow/green) are normal.
The bruise usually improves and disappears in about 7–14 days.