A typical dental filling takes between 20 and 60 minutes to complete. Simple fillings using tooth-coloured composite resin usually fall on the shorter end of that range, while larger fillings, replacements of old restorations, or fillings performed on back molars can take longer. The total time depends on the size of the cavity, the material chosen, the tooth's location, and whether any unexpected complications arise during the procedure.
This guide explains exactly how long a filling takes, what happens during each stage of the appointment, how different filling materials affect duration, and what Canadian patients should know about booking, insurance, and aftercare. Whether you are preparing for your first filling or comparing options for replacing an old one, understanding the timeline helps you plan your day and know what to expect in the dental chair.
Quick Overview: Dental Filling Duration at a Glance
Dental filling duration varies based on several interconnected factors. The following overview summarises the key points covered in this article:
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Simple composite filling: 20 to 30 minutes
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Moderate filling (larger cavity or back tooth): 30 to 45 minutes
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Complex filling or replacement: 45 to 60 minutes or more
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Amalgam fillings: Often slightly faster to place than composite, though the difference is modest
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Gold or ceramic inlays/onlays: Require two appointments, with the first visit lasting 60 to 90 minutes
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Additional time needed for: Anaesthesia, shade matching, bite adjustment, and multiple fillings in one visit
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Canadian-specific factors: Provincial insurance coverage, wait times for non-urgent appointments, and regional cost variations
Most patients can expect to be in and out of the dental office within an hour for a single filling. Appointments involving multiple fillings or more complex restorations may require additional time, sometimes up to 90 minutes.
How Long Does a Dental Filling Take? A Stage-by-Stage Breakdown
Understanding what happens during a filling appointment helps explain why the procedure takes the time it does. Each stage serves a specific purpose, and skipping or rushing any step can compromise the quality and longevity of the restoration.
Stage 1: Numbing and Preparation (5 to 10 Minutes)
The appointment begins with a local anaesthetic to ensure you feel no pain during the procedure. In Canada, dentists commonly use lidocaine or articaine, sometimes with epinephrine to prolong the numbing effect. The injection itself takes only a minute or two, but the dentist typically waits several minutes for the anaesthetic to take full effect before beginning work.
For very small surface fillings, some dentists may use a topical numbing gel alone, which shortens this stage considerably. However, most fillings require an injection for patient comfort.
Stage 2: Cavity Preparation (5 to 15 Minutes)
Once the area is numb, the dentist removes decayed tooth structure using a dental drill or, in some cases, a laser. The goal is to remove all decay while preserving as much healthy tooth as possible. This stage also involves shaping the cavity to hold the filling material securely.
The time required depends on the size and depth of the cavity. A small surface cavity might take only a few minutes to prepare, while a larger cavity extending deeper into the tooth can take considerably longer.
Stage 3: Filling Placement (5 to 20 Minutes)
This stage varies significantly depending on the material used. Composite resin fillings are applied in thin layers, with each layer cured using a blue light before the next is added. This layering process ensures strength and proper bonding but takes longer than placing a single piece of amalgam.
Amalgam fillings are packed into the cavity as a single mass and shaped quickly, which is one reason amalgam appointments are sometimes shorter. However, composite has become the preferred choice for most Canadian dentists and patients due to its tooth-coloured appearance and bonding properties.
Stage 4: Shaping and Bite Adjustment (5 to 10 Minutes)
After the filling is placed, the dentist shapes it to match the natural contours of your tooth and checks your bite. You will be asked to bite down on a piece of articulating paper, which marks high spots. The dentist then adjusts the filling until your bite feels even and comfortable.
This step is critical. A filling that sits too high can cause pain, jaw discomfort, and even damage to the opposing tooth over time. Taking a few extra minutes here prevents problems later.
Stage 5: Polishing and Final Check (2 to 5 Minutes)
The final stage involves polishing the filling to smooth rough edges and ensure it blends with the surrounding tooth. The dentist may also take a final look at the margins where the filling meets the tooth to confirm a proper seal.
Types of Fillings and Their Time Requirements
Different filling materials require different techniques, which directly affects how long the appointment takes. The following sections explain the time requirements for each common type.
Composite Resin Fillings (Direct)
Composite resin is the most common filling material used in Canada today. It is made of a mixture of plastic and fine glass particles, and it bonds directly to the tooth structure. Because it is applied in layers and cured with a special light, composite fillings take slightly longer to place than amalgam.
Typical time: 20 to 45 minutes for a single filling, depending on size and location.
Canadian context: Composite is favoured by most Canadian dentists for its aesthetic appearance and conservative preparation. Some provincial dental plans cover composite fillings on back teeth at the amalgam rate, meaning patients may pay the difference out of pocket.
Amalgam Fillings (Direct)
Amalgam is a mixture of metals, including silver, tin, copper, and mercury. It has been used for over a century and remains one of the most durable filling materials. Amalgam is placed as a single mass and hardens quickly, which can make the appointment slightly shorter than a composite filling.
Typical time: 20 to 40 minutes for a single filling.
Canadian context: Amalgam use has declined significantly in Canada, particularly in urban practices and among younger dentists. Some patients prefer amalgam for its durability and lower cost, while others avoid it due to aesthetic concerns or mercury-related preferences.
Gold Fillings (Indirect)
Gold fillings, also called gold inlays or onlays, are fabricated in a dental laboratory based on impressions taken of your tooth. This requires two appointments: the first to prepare the tooth and take impressions, and the second to cement the finished restoration.
Typical time: 60 to 90 minutes for the first appointment; 30 to 45 minutes for the second.
Canadian context: Gold restorations are less common in Canada due to cost and the popularity of tooth-coloured alternatives. However, some patients and dentists prefer gold for its longevity and biocompatibility.
Ceramic and Porcelain Fillings (Indirect)
Ceramic or porcelain inlays and onlays are also fabricated in a lab and require two appointments. They offer excellent aesthetics and are often used for larger restorations where composite might not provide sufficient strength.
Typical time: Similar to gold—60 to 90 minutes for the first appointment and 30 to 45 minutes for the second.
Canadian context: Ceramic restorations are widely available across Canada and are often covered by dental insurance at a higher rate than composite fillings, though coverage varies by province and plan.
Glass Ionomer Fillings
Glass ionomer fillings release fluoride and bond chemically to the tooth. They are commonly used for children's teeth, temporary fillings, and areas not subject to heavy chewing forces.
Typical time: 15 to 30 minutes.
Canadian context: Glass ionomer is frequently used in Canadian paediatric dentistry and for patients at high risk of decay due to its fluoride-releasing properties.
Factors That Affect Filling Duration
Several variables can extend or shorten the time required for a filling. Understanding these factors helps you anticipate how long your appointment might take.
1. Size and Depth of the Cavity
Larger cavities require more time to prepare, fill, and shape. A small surface cavity might take 20 minutes, while a deep cavity extending close to the nerve can take 45 minutes or more.
2. Location of the Tooth
Back teeth (molars and premolars) are harder to reach and have more complex surfaces, which can add time to the procedure. Front teeth are more accessible but often require more careful shaping for aesthetic reasons.
3. Number of Fillings
If you need multiple fillings, the dentist may complete them in one appointment or schedule separate visits. Multiple fillings in one visit can take 60 to 90 minutes or longer, depending on complexity.
4. Filling Material
As discussed above, composite fillings take longer than amalgam due to the layering and curing process. Indirect restorations require two appointments.
5. Dentist's Experience and Technique
An experienced dentist working with familiar materials and equipment can complete a filling more efficiently. However, speed should never come at the expense of quality.
6. Patient Factors
Patients who are anxious, have a strong gag reflex, or have difficulty keeping their mouth open for extended periods may require additional time. Children and patients with special needs may also need a slower pace.
7. Unexpected Complications
Sometimes the dentist discovers additional decay, a cracked tooth, or a cavity that extends further than the X-ray suggested. These discoveries can extend the appointment or require a follow-up visit.
8. Anaesthesia Effectiveness
If the anaesthetic does not take effect fully, the dentist may need to administer additional numbing, adding time to the appointment.
What Happens During a Filling Appointment: A Canadian Perspective
Dental practices across Canada follow similar protocols for fillings, though there are regional variations in equipment, materials, and appointment scheduling.
Before the Appointment
In Canada, you typically book a filling appointment after a routine check-up or an emergency visit reveals decay. Some provinces have longer wait times for non-urgent dental care, especially in rural or remote areas. If you are experiencing pain, most Canadian dental offices will prioritise you for a sooner appointment.
During the Appointment
Canadian dentists follow infection control standards set by provincial dental regulatory bodies, such as the Royal College of Dental Surgeons of Ontario or the College of Dental Surgeons of British Columbia. You can expect:
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A review of your medical history and any medications
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X-rays if not taken recently
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Local anaesthesia
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The filling procedure as described above
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A bite check and polishing
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Aftercare instructions
After the Appointment
Most patients can return to normal activities immediately after a filling. However, if you received anaesthesia, you should avoid chewing on the numb side until sensation returns to prevent accidentally biting your cheek or tongue.
Canadian Considerations: Insurance, Cost, and Access
Dental care in Canada is not universally covered under the public healthcare system. Most dental services, including fillings, are paid for through private insurance, employer benefits, or out of pocket.
Provincial Dental Coverage
Some provinces offer limited dental coverage for children, seniors, or low-income adults. For example:
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Ontario: The Ontario Seniors Dental Care Program provides free dental care for low-income seniors.
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British Columbia: The BC Healthy Kids Program covers basic dental care for children in low-income families.
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Alberta: Alberta Child Health Benefit provides dental coverage for eligible children.
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Quebec: The Quebec Dental Care Program for Children covers children under 10 for certain services.
Coverage varies widely, and most adults rely on private insurance or pay out of pocket.
Typical Costs in Canadian Dollars
The cost of a filling in Canada depends on the material, the tooth, and the province. According to provincial dental fee guides:
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Composite filling (one surface): $150 to $250
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Composite filling (two surfaces): $200 to $350
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Composite filling (three surfaces): $250 to $450
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Amalgam filling: $100 to $200
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Gold or ceramic inlay/onlay: $600 to $1,200
These are general ranges. Actual fees vary by dentist and region. The Canadian Dental Association publishes a fee guide that provincial associations adapt, but dentists are not required to follow it exactly.
Wait Times for Dental Appointments
Wait times for dental appointments in Canada vary by region and urgency. Emergency cases are typically seen within 24 to 48 hours. Non-urgent fillings may be scheduled within a few days to a few weeks, depending on the practice's availability. Rural and remote communities may face longer waits due to a shortage of dentists.
How Long Do Fillings Last?
The lifespan of a filling depends on the material, your oral hygiene, and your chewing habits.
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Composite fillings: 5 to 10 years
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Amalgam fillings: 10 to 15 years or longer
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Gold fillings: 15 to 20 years or longer
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Ceramic fillings: 10 to 15 years
Good oral hygiene, regular dental check-ups, and avoiding hard foods or habits like nail-biting can extend the life of your filling. When a filling wears out, cracks, or falls out, it needs to be replaced, which requires another appointment.
Aftercare Timeline: What to Expect After a Filling
Knowing what to expect after your filling helps you plan the rest of your day and recognise any potential issues.
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Immediately after: Avoid eating until the anaesthesia wears off (usually 1 to 3 hours).
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First 24 hours: Mild sensitivity to hot or cold is normal. Avoid very hard or sticky foods.
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First week: Sensitivity should gradually decrease. If it persists or worsens, contact your dentist.
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Ongoing: Maintain good oral hygiene and attend regular check-ups to monitor the filling.
Frequently Asked Questions About Dental Fillings
How long does a filling take for a child?
Children's fillings typically take 15 to 30 minutes, depending on the size of the cavity and the child's cooperation. Paediatric dentists in Canada are trained to work efficiently with young patients.
Can I drive home after a filling?
Yes, you can drive yourself home after a filling unless you received sedation. Local anaesthesia does not impair your ability to drive.
How long does it take to replace an old filling?
Replacing an old filling usually takes 30 to 60 minutes. The dentist removes the old material, checks for new decay, and places a new filling.
Is it normal for a filling to take more than an hour?
Yes, especially for large fillings, multiple fillings, or indirect restorations. Complex cases can take 90 minutes or more.
How soon can I eat after a filling?
Wait until the anaesthesia wears off, usually 1 to 3 hours. Then start with soft foods and avoid extremely hot or cold items for the first day.
Does a filling hurt?
The procedure itself is painless due to local anaesthesia. Some patients experience mild sensitivity afterward, which usually resolves within a few days.
How long does a filling take without insurance?
The duration is the same regardless of insurance. However, without insurance, you will pay the full cost out of pocket, which ranges from $150 to $450 for most fillings in Canada.
Can I go back to work after a filling?
Yes, most people return to work or school immediately after a filling. If you received sedation, you may need to arrange for someone to drive you and take the rest of the day off.
Conclusion:
A dental filling typically takes 20 to 60 minutes, with most simple fillings completed in under 45 minutes. The exact time depends on the size and location of the cavity, the material used, and whether any complications arise. In Canada, dental filling appointments are straightforward, and most patients can return to their daily activities immediately afterward.
Understanding the stages of a filling appointment—from numbing and preparation to placement and polishing—helps you know what to expect and why the procedure takes the time it does. If you have questions about your specific situation, your Canadian dentist can provide personalised guidance based on your oral health and treatment plan.
Regular dental check-ups remain the best way to catch cavities early, when fillings are smaller, faster to place, and less expensive. If it has been more than six months since your last visit, consider booking an appointment with your local dental office.