You notice a rough edge with your tongue while eating, or a sip of something cold makes one tooth flinch. Sometimes the discovery happens differently: you’re sitting in a dental chair, hearing the word “cavity” for the first time and wondering whether treatment will hurt, how much it will cost, and whether you really need a filling yet.
A dental filling for cavities isn’t a punishment or a sign that you’ve failed at caring for your teeth. It’s a way to remove damaged tooth structure, close the opening, and help the tooth keep working. The decision isn’t always automatic, either. A dentist considers the size and position of the decay, your symptoms, your bite, your cleaning routine, and your preferences before recommending a plan.
When a Small Spot Becomes a Dental Filling
A patient might arrive after avoiding one side of their mouth for several days. They may have noticed a brief cold sensation, a dark mark, or food catching in the same place. Others feel nothing at all and learn about the cavity during a routine examination. Both situations are common, and neither means you should feel embarrassed.
A cavity is an area where tooth structure has been weakened and lost because of decay. If the damaged area is small and hasn’t formed a true hole, a dentist may sometimes monitor it and support the tooth with fluoride and improved home care. Once decay has created a cavity that needs restoration, the dentist gently cleans out the softened material and places a filling into the space.
A filling repairs the tooth you have. It doesn’t replace the entire tooth, and it doesn’t mean the problem has become hopeless.
The filling seals the cleaned area and restores the shape your tooth needs for chewing. Think of it as repairing a small hole in a useful wall, rather than rebuilding the whole wall. The earlier the decay is found, the more likely the repair can remain limited to the affected area.
Canada’s adult oral-health data show why fillings remain such a familiar part of restorative care. A national survey found that 96% of dentate adults had experienced at least one decayed, missing, or filled tooth, with an average of 7.95 filled teeth per dentate adult and only 0.58 untreated decayed teeth on average (national oral-health survey). That pattern suggests decay has historically been treated through restoration rather than left untreated.
You can learn more about what the service involves on Inspire Dental’s dental fillings page. The most helpful first step is an honest conversation. You can tell the dental team what you’ve noticed, what worries you, and what you need explained before anything begins.
How Cavities Start and How Dentists Catch Them
Decay usually begins with plaque, a sticky film that gathers on teeth. Bacteria in that film use sugars and starches from food and drinks, producing acids that gradually soften enamel. If the process continues, the weakened area can progress from a surface change to a small hollow.
Chewing surfaces can be deceptive. A molar may have a narrow groove with decay underneath, while the enamel around it still looks like a strong roof. The visible opening may be tiny even though the softened area below is wider. Decay can also develop between teeth, around an existing filling, or near the gumline. Canada’s public-health guidance notes that cavities can form around the edges of fillings and that receding gums increase the likelihood of root caries (Canadian cavity guidance).
What the examination looks for
A dental examination combines several kinds of information:
- Visual inspection: The dentist looks for changes in colour, surface texture, cracks, and areas where plaque collects.
- Gentle checking: A dental instrument can help assess a suspicious groove or edge without treating every mark as a cavity.
- Bitewing X-rays: These images help reveal decay between teeth or beneath contact points that eyes can’t see directly.
The dentist then asks a more important question than “Is there a spot?” The question is whether the area is stable, improving, or progressing.
Monitoring versus treating
A very early change may be managed with fluoride, careful brushing, cleaning between the teeth, and follow-up examinations. Remineralisation is a little like returning building material to a weakened surface. It can help an early enamel lesion become harder and more stable, but it can’t rebuild a missing section once a true hole has formed.
The Canadian Dental Association says a small cavity may sometimes be monitored, while a larger cavity should be filled because it can continue growing and cause pain. Its explanation of a direct filling is straightforward: the dentist cleans out the decay and places the material directly into the cavity (Canadian Dental Association guidance on fillings).
If an X-ray shows a small, stable area and you have no symptoms, watching it may be reasonable. If the decay has entered a deeper layer, catches food, causes sensitivity, or is clearly progressing, repairing it usually protects more of the natural tooth than waiting does. You can read a plain-language explanation of the causes in this guide to what causes tooth decay.
Your Filling Material Options Side by Side
Material choice depends on more than appearance. The dentist considers how much tooth is missing, whether the tooth is in the front or back, how much biting force it receives, whether the area can stay dry during treatment, and how important a tooth-coloured result is to you.
Amalgam is the established silver-coloured option. It has a history of durability, works well in many posterior situations, and generally costs less than composite. Its drawback is visibility. Health Canada’s safety review found no clear link between mercury in dental amalgam and negative health effects and found no new evidence changing amalgam’s overall safety profile in Canada (Health Canada amalgam safety review). The review reported that incident databases over 25 years contained 2 Canadian cases and 49 U.S. cases describing possible adverse effects, but the reports didn’t contain enough information to establish causation.
Composite resin is tooth-coloured and can blend closely with surrounding enamel. It’s often appealing for visible teeth and conservative repairs, although it can be more technique-sensitive and may not offer the same service life as amalgam in every high-load situation. A Canadian health-technology assessment found that amalgam restorations generally lasted longer and cost less on average than composite resin, while composite offered esthetic and conservative-preparation advantages (Canadian restoration assessment).
Ceramic and gold are custom options. Ceramic can provide a natural-looking, stain-resistant restoration for a larger repair, while gold is valued for durability and tissue tolerance. These options usually require more planning and laboratory or custom work, which tends to increase cost.
Glass ionomer can release fluoride and may suit selected areas near the gumline or some children’s teeth. It isn’t automatically the right answer for a heavily loaded chewing surface, so the dentist matches the material to the job.
Filling materials at a glance
| Material | Look | Typical Use | Longevity | Relative Cost |
|---|---|---|---|---|
| Amalgam | Silver-coloured | Selected posterior cavities and areas with strong biting forces | Generally longer-lasting than composite in the Canadian assessment | Lower on average |
| Composite resin | Tooth-coloured | Visible teeth and many small to moderate restorations | Generally shorter-lasting than amalgam in the Canadian assessment | Higher on average |
| Ceramic | Natural-looking | Larger custom restorations and appearance-focused repairs | Durable, depending on design and tooth conditions | Higher |
| Gold | Gold-coloured | Custom restorations where durability is a priority | Highly durable | Higher |
| Glass ionomer | Tooth-shaded, less translucent | Selected gumline areas and some children’s restorations | Best suited to carefully selected situations | Variable |
Your decision may be easier after reviewing composite fillings versus amalgam. There isn’t one universally superior material. The practical choice balances cavity size, tooth location, moisture control, durability, appearance, and budget.
What Happens During Your Filling Appointment
The appointment starts with a conversation, not the handpiece. Tell the dental team what you have noticed and whether you feel tense. At Inspire Dental Group, agreeing on a pause signal and hearing the plan in advance can make the visit feel more manageable, especially if you are weighing treatment now against monitoring a small area.
The dentist confirms the tooth and reviews any needed images. Topical gel may be placed on the gum before local anaesthetic. Once the area is numb, sharp pain should be absent. Pressure, vibration, water, and the handpiece’s sound can still be noticeable. Those sensations are normal and do not indicate damage to the tooth.
The repair itself
The steps usually follow this order:
- The tooth is isolated: The team keeps the area visible and as dry as practical.
- Decay is removed: The dentist clears only the softened decay and affected tooth structure. The high-pitched sound can be startling, while the physical feeling is usually vibration and pressure.
- The cavity is cleaned: The space is shaped and prepared so the filling can seal the tooth.
- The filling is placed: Composite is commonly added in small layers. A curing light sets each layer before the next one is placed.
- The bite is checked: You close gently on marking paper. If the filling feels high, the dentist can adjust it.
- The surface is polished: The finished contour should feel smooth and natural when your tongue passes over it.
The goal is selective repair. The dentist removes only the softened decay, then rebuilds that specific area while leaving the healthy tooth structure intact. This preserves as much of the tooth as the cavity allows and helps it handle everyday biting.
You’re allowed to pause. Raise your hand whenever you need a moment. You do not have to wait until you feel overwhelmed or apologise for speaking up.
Music, sunglasses, a blanket, or a planned pause between stages may also help. Ask about these preferences before treatment begins so the appointment feels more predictable. Before leaving, confirm what was treated, which sensations are expected afterward, and what to do if your bite feels uneven or the tooth remains uncomfortable. Those details help you decide when a quick follow-up with the dental team is appropriate.
Staying Comfortable With Numbing and Sedation Options
Local anaesthetic doesn’t put you to sleep. It temporarily turns off sensation in the treatment area, so the tooth and nearby gum don’t send sharp pain signals while the dentist works. You remain awake and able to speak, answer questions, and raise your hand.
Fear of the needle is common, even among adults who are otherwise comfortable with dental care. Topical numbing gel can reduce the initial sensation, and the injection can be delivered slowly while the team checks your comfort. You can also agree in advance that the dentist will explain before each step rather than surprising you.
When extra anxiety support may help
Sedation can be a practical tool, not a sign that you’re being difficult. Consider discussing it if you experience any of the following:
- Your body reacts before treatment starts: Your heart races in the waiting room or you feel light-headed during appointments.
- You keep postponing care: You’ve cancelled visits because the thought of treatment feels unmanageable.
- Numbing has been difficult before: Previous appointments left you worried that you might feel too much.
- You need several procedures: A comfort plan may make a longer treatment journey easier to manage.
Oral sedation can help some patients feel calmer and less focused on the appointment. It requires planning, including following the dentist’s instructions about taking the medication and arranging transportation when advised. You can review oral sedation options at Inspire Dental before your visit and bring your questions to the consultation.
Comfort planning should be individual. One patient may need a careful explanation and frequent check-ins. Another may prefer quiet treatment, music, and sedation. Tell the team what has made dental visits hard in the past. A good plan is built around you, not just the filling.
How Long Fillings Last and What They Cost in BC
A filling can last for years, but it is not permanent. Replacing one may require removing more tooth structure, particularly if the restoration fractures, leaks, or decay returns along its edge. The choice between monitoring and treating a small area can therefore affect both the tooth and your future costs. Your dentist at Inspire Dental Group can assess whether a repair, replacement, or continued observation makes sense.
Cost depends on the material, tooth location, cavity size, number of surfaces involved, and how difficult it is to keep the area dry. A 2026 Canadian pricing summary lists British Columbia composite fillings at about $450 to $1,084, while amalgam fillings are listed at about $198 to $244 (BC filling cost summary). These are broad published ranges, not a personal quote. Ask for a written estimate after an examination.
The price difference can reflect the work involved, not only the material. Tooth-coloured composite is placed in layers and needs careful moisture control. Amalgam may cost less and suit selected back teeth, while composite may better match your appearance goals. The right choice depends on the tooth, your bite, how much structure remains, and what matters most to you.
When a filling isn’t enough
A filling works when enough healthy tooth remains to support it. If decay has removed a large portion, an inlay or onlay may cover more of the tooth while preserving some natural structure. A crown may be appropriate when the tooth needs broader protection from fracture.
If decay or a crack has reached the pulp, the living centre containing nerves and blood vessels, a filling may no longer solve the problem. The dentist may discuss root canal treatment followed by a restoration that protects the tooth. This decision comes from the examination, not from the price of one material alone.
Untreated decay remains a concern in Canada. Statistics Canada’s 2022-2024 Canadian Health Measures Survey oral-health tables, released in February 2026, were cited by Fraser Health alongside findings that 20% of Canadian adults reported a current cavity needing a filling and 12% reported mouth pain in the prior year (Statistics Canada oral-health tables). Earlier assessment can preserve more choices, including whether monitoring is reasonable or a smaller restoration offers better value.
Caring for Your Filling and Knowing When to Call
For the first few hours, protect your mouth while the numbness fades. A cheek or tongue can be bitten without warning, and hot drinks can burn tissue that cannot fully sense temperature. Choose food that is easy to manage, chew away from the treated tooth if needed, and wait for normal sensation before eating anything that requires strong biting.
Mild tenderness when biting can follow treatment, especially if the tooth was already irritated. Cold sensitivity may linger as it settles. Focus on whether symptoms are worsening, and contact the clinic if you notice new or increasing pain.
Call the clinic if something feels wrong
Contact the dental office during the same week if you notice:
- Sharp pain on biting: The bite may need checking, or the tooth may need further assessment.
- A filling that feels high: If one tooth meets first, a small adjustment can often improve comfort.
- Floss catching at an edge: The contact or filling margin may need examination.
- Night-time aching: Sudden aching at night deserves assessment rather than indefinite monitoring.
Brush with fluoride toothpaste and clean between your teeth as usual. Use a gentle touch around the restoration. These habits protect the filled tooth and neighbouring surfaces, where decay can also develop.
Clenching or grinding can place extra force on restorations. Families may find this resource about sleep grinding in autism helpful when discussing grinding with a dental professional. If a filling loosens or breaks, follow Inspire Dental’s guidance on losing a filling and contact the clinic for advice.
Booking Your Visit at Inspire Dental Group
Inspire Dental Group provides general dental care in Downtown Vancouver, Oakridge, Main Street, Port Moody, and Langley. The team discusses whether a cavity can be monitored or needs treatment, compares suitable materials, and offers comfort planning that can include modern technology, gentle communication, oral sedation options, and weekend availability.
You can book online or by phone at the Lower Mainland location that’s easiest for you. If you’re not ready to commit to treatment, start with an examination and a conversation about what the dentist sees, what can wait, and what shouldn’t.
If you’re noticing sensitivity, food catching, a rough edge, or a cavity you’ve been avoiding, visit Inspire Dental Group for a calm assessment and clear filling options. You can ask about monitoring, composite or amalgam, expected costs, and anxiety support before deciding on treatment.
