How Long After a Filling Can You Eat?

With a white composite filling you can eat as soon as the numbness has gone, usually one to three hours. The filling itself is hard before you leave the chair. What you are waiting for is your own feeling to come back, so you do not bite your cheek.

The Quick Answer, by Filling Type

The material decides everything here, and most advice online conflates the two.

White composite fillings are set hard by a curing light during the appointment. They are at full strength immediately. Eat once the anaesthetic wears off, typically one to three hours, and stick to something soft for the first couple of hours.

Silver amalgam fillings continue hardening after placement and take up to 24 hours to reach full strength. Wait at least a couple of hours, then avoid chewing directly on that tooth for the rest of the day.

Temporary fillings are the fragile ones. Softer material, designed to be removed. Avoid chewing on that side entirely, and stay off anything sticky, which pulls them out.

We place white composite at our clinic, from £155. Amalgam is being phased out across the UK, and our guide to the dental amalgam ban explains what that means if you have existing silver fillings.

The Anaesthetic Matters More Than the Filling

This is the part that gets missed, and it is the actual reason for waiting.

A numb cheek, lip or tongue cannot tell you it is being bitten. People eat while still numb, chew the inside of their cheek without feeling a thing, and then spend the next week with a painful ulcer that has nothing to do with the filling.

It is more common than you would think, and it is particularly worth watching with children, who will happily chew a numb lip out of curiosity.

How long the numbness lasts: usually one to three hours for a standard local anaesthetic, sometimes longer for lower back teeth, where the injection numbs a larger nerve. The lower jaw stays numb longer than the upper.

How to check before eating: run your tongue over your lip and cheek. If you can feel the texture properly, you are fine. If it still feels thick or rubbery, drink something cool and give it another half hour.

What to Avoid, and for How Long

For the first few hours

• Anything you have to chew hard
• Very hot food and drink, both because of numbness and sensitivity
• Hot drinks if your lip is still numb, since you can scald yourself without noticing

For the first day or two

• Very cold things, if the tooth is sensitive
• Sticky food such as toffee and chewing gum, especially with a temporary filling
• Hard food on that tooth: nuts, ice, crusty bread, boiled sweets
• Anything strongly staining if you have had a white filling on a front tooth, since composite takes up colour more readily in the first day or so

Longer term

Nothing, for a well-placed composite. It behaves like a tooth. The exception is habitual ice chewing or nail biting, which chips fillings and eventually the tooth around them.

Why Your Tooth Hurts After a Filling

Some sensitivity is normal. Knowing which kind you have tells you whether to wait or ring us.

Normal, settles on its own

Brief sharpness with cold, mild tenderness for a few days, or a tooth that feels slightly different. Drilling irritates the nerve inside the tooth even when everything goes perfectly, and it calms down. Most people are back to normal within a few days, and up to two weeks is still within range for a deep filling.

Worth ringing about

Pain when you bite down, sharply, every time. This usually means the filling is a fraction too high, so that tooth takes the full force of your bite before the others meet. It is a two-minute adjustment and there is no reason to live with it. Do not wait to see if it settles, because the constant overload keeps the nerve irritated.

Sensitivity that is getting worse after a week rather than better.

Lingering ache after something cold, particularly if it throbs for more than thirty seconds. That can mean the nerve is more inflamed than expected, and occasionally a deep filling ends up needing root canal treatment.

A rough or sharp edge catching your tongue, or floss shredding between the teeth. Both are easily smoothed.

If a tooth has become properly painful rather than sensitive, our guide to stopping severe tooth pain covers what to do while you wait for an appointment. Persistent sensitivity across several teeth is a different problem, covered in why teeth become suddenly sensitive.

Looking After a New Filling

Brush and floss normally from the same day, including the filled tooth. There is no reason to avoid cleaning it, and plaque sitting against the margin of a new filling is how you end up needing another one.

Floss carefully rather than snapping it down, particularly with a filling between teeth in the first day.

If you grind your teeth at night, mention it. Grinding is one of the main reasons fillings fail early, and a guard protects both the filling and the tooth.

How long should a filling last?

A white composite filling typically lasts around five to ten years, sometimes longer for a small one in a low-stress position. Amalgam often managed ten to fifteen.

What ends a filling is usually decay starting again at the edge rather than the material breaking. That is why the six-monthly check matters more than it sounds: a filling can be quietly failing underneath while looking fine.

Frequently Asked Questions

How long after a filling can I eat?

With a white composite filling, as soon as the numbness has fully gone, usually one to three hours. With amalgam, wait a couple of hours and avoid chewing on that tooth for the rest of the day.

Can I drink coffee after a filling?

Wait until the numbness has gone so you do not scald yourself. If it was a white filling on a visible tooth, going easy on coffee, tea and red wine for the first day reduces the chance of picking up stain.

Why does my filling hurt when I bite down?

Most often the filling is very slightly too high, so it takes the force before your other teeth meet. It is a quick adjustment and worth booking rather than waiting out.

How long will my tooth be sensitive after a filling?

A few days is typical, and up to two weeks for a deep filling. Sensitivity that is worsening after a week, or an ache that lingers after cold, should be checked.

Can I brush my teeth after a filling?

Yes, normally, on the same day. Keeping the margin of a new filling clean is what makes it last.

What happens if I eat too soon?

With composite, the risk is biting your numb cheek, lip or tongue rather than damaging the filling. With amalgam or a temporary filling, chewing too early can genuinely dent or dislodge it.

Can I chew gum after a filling?

Not on the same day, and never with a temporary filling. Gum is the most reliable way to pull a temporary out.

My filling fell out. Is it an emergency?

Not usually an emergency, but book promptly. The exposed tooth is vulnerable and often sensitive, and the cavity gets larger the longer it is open. Avoid chewing on it and keep it clean.

Book a Check-Up in Elephant & Castle

If a filling is sensitive beyond a couple of weeks, painful when you bite, or has come out, a short appointment sorts it. Adjusting a high filling takes minutes.

Call 020 7928 4474 or book online. We are in Elephant and Castle, minutes from Waterloo, Borough and London Bridge. White fillings start from £155, and our general dentistry page covers what a check-up includes.

This page is general information, not a diagnosis. Follow any specific aftercare your own dentist gave you, which takes precedence. Last reviewed August 2026.