Your root canal treatment is done. The hardest part is behind you. What matters now is giving that tooth the best chance to heal well, and most of the aftercare is straightforward once you know what to do.
Patients tell us the same thing after almost every root canal: "What should I actually be doing when I get home?" This guide covers exactly that. No waffle. Just clear, practical steps reviewed by Dr Ankit Patel (GDC No. 259174), who carries out root canal treatments at Danbury Dental Care every week.
What to Expect Straight After Treatment
You'll leave the practice with a numb mouth and a temporary filling in place. The local anaesthetic typically takes two to four hours to wear off, sometimes longer in the lower jaw. Until the numbness fades, be careful. Biting your cheek or tongue without realising is surprisingly easy, and hot drinks can burn you before you feel it.
Some tenderness around the treated tooth is completely normal once the anaesthetic wears off. You've just had work done inside the root of a tooth, so a bit of soreness for a few days is expected. For most patients, it peaks on day one or two and then steadily improves. If you'd like a fuller picture of what each day looks like, our recovery timeline walks through it in detail.
Eating and Drinking After Root Canal
Your tooth needs a little care in the first couple of days. Here's what works:
- First 24 to 48 hours: soft foods only. Think soup, scrambled eggs, yoghurt, mashed potato, pasta. Nothing that requires heavy chewing.
- Avoid the treated side. Chew on the opposite side of your mouth until the tenderness settles.
- Temperature matters. Very hot or very cold food and drinks can trigger sensitivity in the treated tooth. Stick to lukewarm for the first day or so.
- Sticky and hard foods. Avoid toffee, chewing gum, crusty bread, nuts and similar foods until your permanent crown is fitted. These can dislodge or crack your temporary filling.
Once the initial soreness passes, you can gradually return to your normal diet. Just be mindful of that temporary filling; it's not designed for long-term heavy chewing.
Pain Management: What to Take and When
Most people manage comfortably with over-the-counter painkillers. Here's what we recommend:
- Ibuprofen (400mg every six to eight hours) is usually the most effective option because it reduces both pain and inflammation. Take it with food.
- Paracetamol is a good alternative if you can't take ibuprofen, or it can be used alongside ibuprofen for stronger relief (the two work differently, so combining them is safe for most adults).
- Avoid aspirin as a painkiller after dental treatment. It thins the blood and can increase bleeding around the treatment site.
- Ice pack for swelling. If you notice any puffiness around the jaw, hold a cold pack against the outside of your cheek for 15 minutes at a time, with breaks in between. This is most helpful in the first 24 hours.
Something that surprises patients is how manageable the discomfort usually is. We see this regularly: people expect the worst and find that a couple of ibuprofen handles it. If you need anything stronger, we'll prescribe it, but that's uncommon.
Dos and Don'ts Checklist
This is the quick-reference version. Keep it handy for the first few days.
| Do | Don't |
|---|---|
| Take painkillers before the numbness wears off | Chew on the treated side until tenderness settles |
| Eat soft foods for 24 to 48 hours | Eat anything hard, crunchy or sticky until your crown is fitted |
| Brush your teeth gently, including around the treated area | Skip brushing (keeping the area clean helps healing) |
| Rinse with warm saltwater after 24 hours | Use mouthwash containing alcohol in the first 24 hours |
| Keep your head slightly elevated when sleeping on the first night | Smoke for at least 48 hours (ideally longer) |
| Attend your follow-up crown appointment | Ignore increasing pain, swelling or fever after day three |
| Rest for the remainder of the day if you had sedation | Drive or drink alcohol if you had IV sedation |
Looking After Your Temporary Filling
After root canal, you'll usually have a temporary filling in place until your crown appointment. This filling has one job: to seal the tooth and prevent bacteria from getting back inside. It's not built to last forever.
To protect it:
- Don't chew directly on it. Use the other side of your mouth for anything that requires real chewing force.
- Avoid sticky foods. Chewing gum, toffee and similar foods can pull the filling out.
- Be gentle when brushing. Brush the area, but don't scrub aggressively over the filling.
- If it falls out or cracks, call us. Don't wait for your crown appointment. An exposed tooth can become recontaminated, and that puts your whole treatment at risk.
One thing we hear often is, "It feels a bit rough." That's normal. Temporary fillings don't have the polished finish of a permanent restoration. As long as it's intact and your bite feels even, it's doing its job.
Oral Hygiene While You Heal
You might be tempted to avoid brushing near the treated tooth. Don't. Keeping the area clean is one of the best things you can do for healing.
- Brush twice a day as you normally would. Use a soft-bristled toothbrush and be gentle around the treated tooth, but don't skip it entirely.
- Floss everywhere else as normal. You can floss around the treated tooth too, but ease the floss in carefully rather than snapping it.
- Saltwater rinse. After 24 hours, rinse gently with warm salt water (half a teaspoon of salt in a glass of warm water) two to three times a day. This helps reduce bacteria and soothes the gum tissue.
What to Avoid in the First 24 to 48 Hours
A few things can interfere with healing in the early days:
- Smoking. This is the single biggest thing you can do to slow down healing. Smoking restricts blood flow to the gums and increases the risk of infection. If you can, avoid it for at least 48 hours. Longer is better.
- Alcohol. Avoid for the first 24 hours. It can interact with painkillers and increase bleeding.
- Vigorous exercise. Skip the gym or any intense activity for 24 hours. Raised blood pressure can cause throbbing and swelling around the treated tooth. Light walking is absolutely fine.
- Hot drinks while still numb. You won't feel the temperature properly and could burn yourself without realising.
Why Your Crown Appointment Matters
The root canal itself saves the tooth. The crown protects it for the long term.
Once the nerve and blood supply have been removed, the tooth becomes drier and more brittle over time. Without a crown, it's vulnerable to cracking or fracturing, especially under the forces of normal chewing. In our experience, patients who delay or skip the crown appointment are significantly more likely to lose the tooth later.
Your crown appointment is usually booked two to four weeks after the root canal, once the tooth has settled. At Danbury Dental Care, crowns start from £790. If you'd like to know more about the process, our crowns and bridges page covers what's involved.
Root canal treatment itself is priced at £690, and our team will always give you a full breakdown of costs before you proceed with any treatment. If you'd like to understand more about what happens during the procedure or how long a root canal takes, we've covered both in separate guides.
Warning Signs: When to Contact Us
Some discomfort after root canal is normal. But there are a few things that warrant a call to the practice:
- Pain that increases after day three rather than improving
- Swelling that gets worse or spreads to your face, neck or under your eye
- Fever or feeling generally unwell
- Your temporary filling falls out or feels loose
- Your bite feels uneven or you can't close your teeth together properly
- The tooth that was treated feels significantly longer than the surrounding teeth
If any of these occur, contact us promptly. Most issues are straightforward to resolve when caught early. If you need to reach us urgently, our emergency dentist page has everything you need.
If You Had Sedation for Your Root Canal
Some patients choose to have their root canal under IV sedation, particularly if they feel anxious about dental treatment. If that applies to you, there are a few extra aftercare points:
- Rest for the remainder of the day. The sedative will take several hours to leave your system fully.
- Do not drive, operate machinery, or make important decisions for 24 hours.
- You'll need someone to take you home. Arrange for a friend or family member to collect you from the practice.
- Avoid alcohol for 24 hours. It can interact with the residual sedative in your system.
- Eat lightly when you feel ready. Start with something bland and easy to digest.
Your companion should stay with you for the rest of the day. Most patients feel back to normal by the following morning.
Helping Your Tooth Heal Well
Root canal treatment has a high success rate, and good aftercare plays a real part in that. The honest answer is that most of it comes down to common sense: eat carefully for a couple of days, keep the area clean, take your painkillers, protect the temporary filling, and make sure you get that crown fitted.
Dr Ankit Patel and the team at Danbury Dental Care are here to support you through every stage of your recovery. If something doesn't feel right, or if you simply have a question, call us on 01245 225091. We'd rather hear from you early than have you worry at home.