Getting a Dental Filling: What to Expect Before, During & After

Before Your Appointment

There is very little you need to do to prepare for a routine filling. Eat a normal meal beforehand if you like — you may prefer not to chew on the treated side for a little while afterward. Take your usual medications as normal, and let us know about any changes to your health or medication list when you arrive.

If you know you tend to feel nervous at the dentist, this is the moment to tell us. Mentioning it ahead of time lets us plan extra time, talk you through each step, and discuss comfort options before we begin. Many patients are surprised at how much a calm, unhurried approach changes the experience.

It also helps to think about timing. A filling appointment is usually short — often 30 to 60 minutes depending on the size of the cavity and whether more than one tooth is being treated — so it fits comfortably into a lunch break or before work. Your mouth will likely be frozen for a couple of hours afterward, so you may want to plan around any important meetings or meals during that window. There is no recovery time and no need to arrange a ride; you can drive yourself home and carry on with your day as normal.

During the Procedure

Once you are settled in the chair, a typical filling follows five simple steps:

1. Numbing. We apply a topical gel first, then local anaesthetic so the tooth and surrounding area are completely frozen.
2. Removing the decay. The decayed tissue is gently removed and the tooth is cleaned, leaving only healthy structure.
3. Preparing the tooth. A bonding agent is applied so a composite filling adheres securely and seals the tooth.
4. Placing & curing. Tooth-coloured composite is added in layers, each hardened with a curing light, then shaped to match your tooth.
5. Checking your bite. We make sure the filling feels natural when you bite, then polish it smooth.

You will hear some sounds and feel pressure and vibration, but you should not feel pain. If anything feels uncomfortable, you can raise your hand at any time and we will pause. Curious about the materials? Our composite fillings page explains why tooth-coloured resin is the modern standard.

The Type of Filling You'll Receive

Before your appointment, it helps to know which kind of filling you are likely to get — because it shapes both the experience and the result. The vast majority of fillings placed today are tooth-coloured composite, but it is worth understanding the choices.

Composite (tooth-coloured)

Composite resin is shade-matched to your natural enamel and bonded directly to the tooth, so the repair is essentially invisible. It is placed in layers and hardened with a curing light right in the chair, which means it is fully set before you leave. For most patients this is the default, and you can read more on our composite fillings page.

Amalgam (silver)

Traditional silver amalgam is still strong and economical, though its dark colour is visible. Some patients choose it for out-of-sight back teeth, while many prefer the natural look of composite. If you have older silver fillings, you can also explore replacing them with tooth-coloured material.

Not sure which is right for you? Our detailed comparison of composite vs. amalgam fillings walks through every factor — and we will always recommend the best option for your specific tooth.

Will It Hurt? The Freezing, Honestly

This is the question on everyone's mind, so let's be direct: the procedure itself should not hurt because the tooth is fully frozen first. The one sensation people remember is the tiny pinch as the local anaesthetic goes in — and even that is minimised by the numbing gel we apply beforehand. We can also deliver the anaesthetic slowly, which makes a real difference.

Within a few minutes the area is numb and you will feel only pressure and movement during the filling. After the appointment, the freezing wears off gradually over one to three hours.

If at any point during the procedure you feel anything sharp, you are never expected to grit your teeth and bear it — a raised hand is all it takes for us to pause and top up the freezing. Knowing you are in control, and that we will stop the moment you need a break, is often what turns a dreaded appointment into a genuinely calm one. Modern local anaesthetics are remarkably effective, and the vast majority of patients leave saying it was far easier than they had feared.

After: Recovery & Aftercare

Recovery from a filling is refreshingly simple. Because composite hardens completely under the curing light, your filling is fully set by the time you leave — there is no waiting period before it is strong enough to use. The main thing to manage is the freezing.

In the first few hours

• Wait until the numbness fades before eating to avoid biting your cheek, lip or tongue.
• Be cautious with hot drinks while your mouth is still frozen.
• You can return to work, school and normal activities right away.

In the first few days

• Mild sensitivity to temperature or pressure is normal and usually settles quickly.
• Brush and floss as usual — your new filling needs the same care as a natural tooth.
• If your bite feels even slightly "high" or uneven after the freezing wears off, call us for a quick adjustment.

A little lingering sensitivity is common and rarely a cause for concern — the tooth simply needs a short while to settle after the work. Over-the-counter pain relief is rarely needed, but if you do feel some tenderness, sticking to softer foods and lukewarm drinks for a day usually does the trick. What you should not ignore is sensitivity that gets worse rather than better over the following week, or a sharp pain when you bite down. Both are easy to fix with a quick visit, so don't hesitate to call us — a two-minute bite adjustment can make all the difference.

How Long Will Your Filling Last?

A common question after the appointment is simply: how long until I need to deal with this again? The honest answer is that a well-placed filling, cared for properly, can last many years — composite fillings commonly serve for 7 to 10 years or more before they need attention. But longevity is not just about the material; it is largely in your hands.

The biggest factors that determine how long your filling lasts include:

• Your home care — consistent brushing and flossing prevents new decay forming at the edges of the filling.
• The size of the filling — larger restorations naturally face more stress than small ones.
• Your bite and grinding habits — clenching or grinding shortens the life of any restoration; a nightguard helps.
• Regular checkups — they let us catch small problems before they become big, expensive ones.

When a filling does eventually wear out, replacing it is usually a straightforward repeat of the same simple procedure. Keeping up with your regular checkups is the single best way to make every filling last as long as possible.

It also helps to know the warning signs that a filling is reaching the end of its life, so you can have it checked before it causes trouble. Increased sensitivity in a previously comfortable tooth, a rough or chipped edge you can feel with your tongue, a visible crack or dark line at the margin, or food that keeps catching in one spot are all worth mentioning at your next visit. None of these are emergencies on their own, but they are exactly the kind of small clues we look for at a checkup. Catching a worn filling early means a simple replacement rather than a larger, more expensive repair later on — another reason those routine visits pay for themselves.

If all of this sounds reassuringly ordinary, that is rather the point. For the overwhelming majority of people, a filling is one of the most routine appointments in dentistry — quick, comfortable and quietly effective. Knowing what each step involves ahead of time tends to dissolve the nerves that build up around the unknown. By the time you are back in the waiting room, most patients are genuinely surprised at how little there was to worry about, and the tooth that brought them in is already protected and back to normal.

If You Feel Anxious

Dental anxiety is extremely common and nothing to be embarrassed about. Recognised by the Canadian Dental Association as a real barrier to care, it keeps many people from getting the treatment they need. The good news is that we have many ways to help — from a slower pace and clear explanations to sedation dentistry for those who need a little more support.

When to Call Us

Most fillings settle without any issue, but get in touch if you notice any of the following:

• Sharp pain when biting, or a bite that feels uneven after the freezing wears off.
• Sensitivity that is worsening rather than improving, or that lasts beyond two to three weeks.
• A rough, cracked or missing filling, or a piece that has come away.
• Any swelling, throbbing or signs of infection — contact us promptly.

We are a gentle dentist serving South Ottawa families, and we would always rather hear from you than have you wait and worry. If a filling has come out or a tooth is painful, see our emergency dental fillings page or call (343) 313-1531. Ready to book? You can request an appointment online any time.