Most toothaches do not start as emergencies. They start as something you notice for a second and then forget about. A twinge when you drink cold water. A dull ache after chewing on one side. A sensitivity that comes and goes.
You tell yourself it is nothing. You switch to chewing on the other side. You avoid ice in your drinks. And for a while, that works.
Until it does not.
The thing about dental problems is that they do not plateau. They do not stay at “minor inconvenience” and wait for you to deal with them. They escalate. And each stage of escalation costs more to fix than the last.
Here is what that escalation actually looks like in dollars, timelines, and treatment complexity.
Most toothaches start with decay. A cavity forms when bacteria break through the enamel and start eating into the tooth structure underneath.
At this stage, the fix is a filling. Your dentist removes the decayed material, cleans the area, and fills it with composite resin. One appointment. Thirty to sixty minutes. Typically covered at 80% by most Ontario dental insurance plans.
Out-of-pocket cost with insurance: roughly $40 to $80. Without insurance: $200 to $400 depending on the size and location of the cavity.
This is the cheapest, simplest, least invasive stage. It is also the stage where most people delay.
The cavity does not hurt much yet. Maybe not at all. And because it does not demand attention, it does not get any.
Left untreated, the decay spreads deeper into the tooth. It moves through the dentin (the layer beneath enamel) and approaches the pulp, which is the soft tissue inside the tooth containing nerves and blood vessels.
At this stage, the tooth starts sending clearer signals. Sensitivity to hot and cold that lingers instead of fading quickly. Pain when biting down. An ache that shows up at night when you lie down.
The filling needed is now larger. In some cases, the cavity is too large for a standard filling and requires an inlay, onlay, or partial coverage restoration. If the decay has undermined enough of the tooth’s walls, a dental crown may be necessary to hold the tooth together.
Cost for a large filling or onlay: $400 to $800. Cost for a crown: $800 to $1,800. Insurance coverage for crowns is often 50% with waiting periods, so out-of-pocket costs climb.
The jump from Stage 1 to Stage 2 usually happens over months to a year. During that time, the cost of treatment roughly doubles or triples.
When decay reaches the pulp, bacteria infect the nerve and blood supply inside the tooth. This is when the pain stops being “noticeable” and becomes “impossible to ignore.”
Symptoms at this stage include severe, constant pain that may throb or pulse, pain that wakes you up at night, sensitivity to any temperature, swelling in the gum near the tooth, and sometimes a visible pimple-like bump on the gum (a fistula) where the infection is draining.
The treatment is root canal therapy. Your dentist or endodontist removes the infected pulp, cleans and disinfects the canals inside the root, fills them with a biocompatible material, and seals the tooth. After a root canal, the tooth almost always needs a crown to protect it from fracturing.
Cost for root canal therapy: $700 to $1,500 depending on the tooth (molars cost more due to multiple canals). Cost for the crown afterward: $800 to $1,800. Total: $1,500 to $3,000 or more.
Insurance typically covers root canals at 50% to 80%, but annual maximums often cap benefits at $1,500 to $2,500. If you have already used benefits for other work that year, you may be covering most of this out of pocket.
This is the stage where patients start saying “I wish I had come in sooner.” The procedure takes multiple appointments, the recovery involves several days of discomfort, and the bill is a genuine financial hit.
Not every infected tooth can be saved with a root canal. If the infection has been present for too long, the decay has destroyed too much structure, the tooth has cracked below the gumline, or a previous root canal has failed, extraction becomes the only option.
A simple extraction costs $150 to $400. A surgical extraction (for teeth that are broken, impacted, or have curved roots) costs $300 to $600.
But the extraction itself is not the real cost. The real cost is what comes after: replacing the missing tooth.
Leaving the gap is an option, but it is not a neutral one. The teeth on either side of the gap will shift over time. The tooth above or below the gap (the opposing tooth) will start to erupt out of its socket because it no longer has anything to bite against. Your bite alignment changes. Other teeth take on more force than they were designed for, increasing the risk of further fractures and wear.
A single missing tooth, left alone, creates problems in the surrounding teeth within a few years.
Now you need to fill the gap. The three main options are a dental bridge, a dental implant, or a partial denture.
A three-unit bridge (two anchor crowns plus one pontic) costs $2,500 to $5,000. It requires grinding down the two teeth next to the gap to serve as anchors.
A dental implant (post, abutment, and crown) costs $3,000 to $6,000. It may also require bone grafting if the extraction site has lost volume, which adds $500 to $1,500.
A partial denture costs $800 to $2,500 upfront but needs replacement every 5 to 7 years.
The patient who started with a $200 cavity is now looking at a $3,000 to $6,000 bill, multiple appointments over several months, and a tooth replacement that will need maintenance for the rest of their life.
Here is the progression in one view:
Month 0: Small cavity detected at routine checkup. Cost to fix: $200 to $400. One appointment.
Month 6 to 12: Cavity grows. Now needs a large filling or crown. Cost: $400 to $1,800. One to two appointments.
Month 12 to 24: Infection reaches the nerve. Needs root canal and crown. Cost: $1,500 to $3,000. Two to three appointments.
Month 18 to 36: Tooth cannot be saved. Extraction required. Cost for extraction: $150 to $600. But the gap now needs to be filled.
Month 24 to 48: Implant or bridge placed. Cost: $3,000 to $6,000. Three to six appointments over several months.
Total cost of ignoring the original cavity: potentially $5,000 or more, plus dozens of hours in dental appointments, significant discomfort, and a replacement tooth that would not have been necessary if the cavity had been filled when it was small.
None of this is about blame. People delay dental care for real reasons.
Cost is the most common barrier. Even with insurance, dental work requires out-of-pocket spending that competes with rent, groceries, and childcare.
Fear is the second. Dental anxiety is a real condition that affects a significant portion of adults, and it does not respond to logic. Knowing you should go does not make it easier to sit in the chair.
Time is the third. Booking appointments around work schedules, childcare, and other commitments is genuinely difficult, especially for multi-appointment treatments.
These barriers are legitimate. But understanding the escalation curve can help reframe the decision. A $200 filling takes 30 minutes and involves minimal discomfort. A root canal, crown, and potential implant takes months of appointments, significant recovery, and thousands of dollars.
The earlier you address a dental problem, the less it costs in every dimension: money, time, pain, and complexity.
If you have a tooth that has been bothering you, even mildly, do not wait for it to become an emergency. The best time to deal with it was when it started. The second best time is today.
Contact our office to book an assessment. We will take the right imaging, tell you exactly what is going on, and give you a clear treatment plan with costs before anything starts. If it is a small problem, we will fix it quickly and affordably. If it has progressed, we will walk you through the options honestly.
Either way, you will know where you stand. And that is better than waiting.
