Dental Fillings in Mississauga

Dental fillings in Mississauga repair cavities before they grow deeper and start to hurt. A cavity is a small hole in a tooth caused by decay, and a filling removes the decay and seals the tooth so it’s strong enough to chew on again. At River Run Dental Centre, our dentists usually place fillings in one short visit, using tooth-coloured material that blends in.
Most cavities are found at regular checkups, before you feel anything. We’re open 7 days a week, including evenings and Sundays, so it’s easy to fix a cavity while it’s still small.
Benefits of Treating a Cavity Early
A small cavity is quick and inexpensive to fix. Waiting usually means a bigger filling, or a root canal and crown later.
Stops tooth decay from spreading
Relieves sensitivity and toothache
Tooth-coloured, natural-looking repair
Usually done in one visit

What Happens During a Cavity Filling
A filling usually takes 20 to 60 minutes, depending on the size and number of cavities.
Freezing
We numb the tooth and gum so you feel pressure but not pain.
Removing the Decay
We clean out the decayed part of the tooth and shape it to hold the filling.
Filling and Polishing
We place the filling in layers, harden it with a light, then shape it to fit your bite.
Your lip and cheek may stay numb for two to three hours, so wait before eating anything hot or chewy. The tooth can be a little sensitive to cold for a few days. If your bite feels high once the freezing wears off, call us and we’ll adjust it in a few minutes.
Why Choose River Run for Dental Fillings
We look for cavities early, show you what we see on your X-rays, and only recommend a filling when a tooth needs one. Very early decay that hasn’t broken through the enamel can sometimes be watched and treated with fluoride instead.

Gentle, Careful Treatment
We numb the tooth well and go at your pace, especially if you're nervous.
- Evening and Sunday appointments
Clear Costs, CDCP Accepted
We explain the cost of each filling, and what your plan covers, before we start.
- Canadian Dental Care Plan accepted
Dental Filling Cost in Mississauga
Dental filling cost in Mississauga depends on the size of the cavity, how many surfaces of the tooth it covers, and the material. A small, one-surface filling costs less than a large one that wraps around the tooth. Tooth-coloured composite fillings are the most common choice today. The average cost of a dental filling in Ontario varies from clinic to clinic. When you compare one cavity filling price with another, check whether the exam and X-rays are included, since filling fees don’t always cover them.
With insurance: most workplace plans cover fillings as basic treatment, often at a high rate, so your share is usually small.
Without insurance: we’ll give you the cost before we start. If you’re looking for a cheap or affordable cavity filling, the simplest way to save is to treat cavities while they’re small.
The Canadian Dental Care Plan (CDCP) covers fillings for eligible patients.
We Direct Bill Your Dental Insurance
Pay only your share at your visit. We accept most private dental plans, the Canadian Dental Care Plan and several government programs, and we offer payment plans if you don't have insurance.
- Sun Life
- Manulife
- Canada Life
- Green Shield
- Blue Cross
- Desjardins
- Beneva
- Industrial Alliance
- Empire Life
- Equitable Life
- Johnson / belairdirect
- Cowan
- ClaimSecure
- Express Scripts Canada
- TELUS Health
- CDCP
- Healthy Smiles Ontario
- ODSP
- NIHB
Related reading: Cavity in a tooth: early signs and stages and How to prevent cavities.
Tooth Decay: Causes, Signs and Prevention
Tooth decay starts when bacteria in plaque turn sugar into acid, which slowly dissolves enamel. The main causes are frequent sugary snacks and drinks, not brushing or flossing enough, dry mouth, and deep grooves in back teeth. Signs of a cavity in a tooth include:
- Sensitivity to sweet, hot or cold food
- A toothache when you bite down
- A visible hole, dark spot or rough edge
- Food getting stuck in the same place
If a filling falls out, keep the area clean, avoid chewing on that side and call us. Common causes of a lost filling are new decay underneath, grinding and biting something hard. A temporary filling kit from a pharmacy can cover the tooth for a day or two. A lost filling isn’t usually an emergency, but the exposed tooth can break or decay further.
The easiest way to fix tooth decay is to catch it early. Brush twice a day with fluoride toothpaste, floss once a day, cut back on sugary drinks and snacks, and book a checkup every six months.
Fillings for Kids, Adults and Seniors
Cavities can happen at any age, and fillings are adjusted to each stage of life.
- Children: small fillings in baby teeth keep them healthy until they fall out, so kids can eat and speak comfortably. We explain each step in simple words.
- Adults: fillings repair new cavities and replace old, worn or cracked fillings, including old silver fillings that are failing.
- Seniors: fillings treat root cavities along receding gums, which become more common with age and dry mouth.
Old fillings don’t last forever. We check them at every visit and let you know when one is starting to leak or crack, before it causes a bigger problem.
Book Your Dental Filling in Mississauga
Think you have a cavity? Book a checkup or filling at a time that suits you, including weekday evenings and Sundays. We'll explain the cost before we start. Find us at 11-1525 Bristol Rd W, near Creditview Rd.
Dental Fillings in Mississauga: Frequently Asked Questions
It depends on the size of the cavity and how many surfaces of the tooth it covers. Small fillings cost less than large ones. Most insurance plans and CDCP cover fillings, and we give you the cost before we start.
The tooth is numbed first, so you should feel pressure and vibration but not pain. It may be a little sensitive to cold for a few days afterwards.
Composite fillings usually last 5 to 10 years, and often longer. Large fillings, grinding and new decay around the edges can shorten their life.
Composite fillings are made of a tooth-coloured resin that bonds to your tooth. They blend in with your natural teeth and usually need less healthy tooth removed than older silver fillings.
Composite fillings harden right away under a curing light, so you can eat once the freezing wears off. Wait until then so you don't bite your cheek or tongue.
Keep the area clean, avoid chewing on that side and call us. A pharmacy temporary filling kit can protect the tooth for a day or two. We'll replace the filling and check why it came loose.
Most workplace dental plans cover fillings as basic treatment. The Canadian Dental Care Plan also covers fillings for eligible patients. We'll check your coverage before treatment.
Trusted Sources on Fillings and Tooth Decay
Want to read more? These health organizations explain fillings and tooth decay in plain language:
- Canadian Dental AssociationGuide to dental fillingscda-adc.ca ↗
- Ontario Dental AssociationCavities and tooth decayoda.ca ↗
- National Institute of Dental and Craniofacial ResearchGuide to tooth decaynidcr.nih.gov ↗
- Cleveland ClinicFilling types and materialsmy.clevelandclinic.org ↗
- Government of CanadaCanadian Dental Care Plancanada.ca ↗
Related Services
Fillings are part of keeping your teeth healthy. These services may also help:
- Teeth cleaning to catch cavities early at your checkup
- Root canal treatment when decay reaches the nerve
- Dental crowns for teeth too damaged for a filling
- Children’s dentistry for kids’ fillings, fluoride and sealants


