Dra. Cléo Salustiano In this article
SummaryWhat determines how complex a root canal is?How do you compare root canal quotes?FAQRead nextHow much does a root canal cost? What determines the price
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Quick summary of this article+
This article doesn't list prices: Brazil's Dental Code of Ethics doesn't allow prices to be advertised. What determines the cost of a root canal: which tooth (front teeth usually have one canal, molars three or four, curved and with variable anatomy), individual anatomy (calcification, curvature), the condition of the tooth when treatment begins (an established infection calls for more visits), whether it's a first treatment or a retreatment (more demanding), the X-rays taken during the procedure and the rebuilding that follows: a larger filling, a post and, often for back teeth, a crown. The most common mistake when comparing plans is assuming the crown is included. Comparing a root canal with an extraction by looking only at the first number is also misleading: the extracted tooth needs to be replaced. In Mooca, with Dr. Cléo Salustiano (CRO-SP 170844).
A root canal is one of the treatments where the question about cost arrives along with the pain, and that's why it's where decisions are most often made in a hurry. You won't find prices here: Brazil's Dental Code of Ethics doesn't allow dental offices to advertise prices, and a number given before an X-ray would ignore the factor that weighs most, which is which tooth needs treatment.
What can be explained is what defines this treatment. An incisor with a single canal and a molar with three or four curved canals are procedures of very different complexity, even though both are called a 'root canal.' And there's one item almost always left out of the initial figure: the filling or crown that protects the tooth afterward.
In this article, Dr. Cléo Salustiano (CRO-SP 170844) explains what makes up the treatment, why retreatment is a different story and what to ask before comparing quotes.
This article comes from Dr. Cléo Salustiano's dental office in Mooca, São Paulo (care in English, Portuguese and Spanish). See the root canal treatment page to learn how the treatment is done here and book your assessment.
What determines how complex a root canal is?
The first factor is which tooth. Front teeth usually have a single canal that's relatively straight and easy to access. Premolars have one or two. Molars have three or four, often curved, narrow and with variable anatomy. The more canals and curvature, the more working time, instrumentation and X-ray checks.
The second is individual anatomy. Canals calcified by old trauma or age, sharp curves, accessory canals and unusually shaped roots make access and cleaning take longer. That's nobody's choice; it's what the X-ray shows.
The third is the condition of the tooth when treatment begins. A tooth with an established infection, an abscess or a lesion visible on the X-ray may need more visits, medication inside the canal between them and later follow-up. A tooth that's still vital, treated before things progress, usually takes fewer steps.
The fourth is whether it's the first time. Retreatment, when a previous root canal needs to be redone, involves removing the material inside, often taking off a post and crown, and only then treating. It's technically more demanding than the first treatment.
Imaging is part of it too. X-rays at several stages are part of the procedure; in cases of difficult anatomy or retreatment, a CT scan may be recommended.
Then there's what comes afterward, the most overlooked item: the treated tooth needs to be rebuilt. Depending on how much structure is left, that means a larger filling, a post and, often for back teeth, a crown. A quote that covers only the root canal leaves out precisely the step that prevents the tooth from fracturing and losing everything that was done.
Finally, there's follow-up. Check-up X-rays after a few months confirm healing of the area around the root. It's a short step, but it's part of well-managed treatment.
| Factor | How it weighs in |
|---|---|
| Which tooth | Front teeth usually have one canal; premolars one or two; molars three or four, often curved |
| Individual anatomy | Calcification, sharp curves and accessory canals make access and cleaning take longer |
| Condition of the tooth | An established infection or a lesion on the X-ray may require medication inside the canal and more visits |
| First treatment or retreatment | Retreatment removes the previous material and sometimes takes off a post and crown before treating |
| Imaging | X-rays at several stages; CT scan for difficult anatomy or retreatment |
| Rebuilding the tooth | Larger filling, post and, often for back teeth, a crown: the most overlooked item |
| Follow-up | Check-up X-ray months later to confirm healing |
How do you compare root canal quotes?
Ask whether rebuilding the tooth is included. It's the most common difference between two plans that seem far apart: one included the root canal plus the crown, the other only the root canal.
Confirm which tooth and how many canals the plan considers. A price quoted by phone, without an X-ray, is an estimate about a tooth no one has seen.
Check whether it's a first treatment or a retreatment. They're different procedures in time and difficulty, and mixing them up explains much of the difference between proposals.
Ask how many visits are planned and what would make it more. Cases with an established infection may need medication inside the canal and an extra visit; knowing this from the start avoids the impression that treatment grew.
Ask whether the X-rays taken during the procedure are included and whether a CT scan is recommended in your case.
Ask about follow-up: whether a check-up X-ray is planned, when and whether it's included.
Avoid deciding on price alone when you're in pain. The urgency is real, but a root canal depends on an accurate diagnosis and careful work. Incomplete treatment tends to come back as a retreatment, which is more complex, or as tooth loss.
And consider the full alternative. Comparing a root canal with an extraction by looking only at the first number is misleading: an extracted tooth needs to be replaced later, and replacement is a whole other treatment.
How much does a root canal cost?
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Prices can't be shared here: Brazil's Dental Code of Ethics doesn't allow dental offices to advertise prices. What determines the cost is which tooth, how many canals it has, its condition, whether it's a first treatment or a retreatment and the rebuilding needed afterward.
Why does a root canal on one tooth cost differently from another?
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Because anatomy varies a lot. Front teeth usually have a single, easily accessed canal; molars have three or four, often curved and narrow. More canals and more curvature mean more working time and more X-ray checks.
Is the crown included in the root canal price?
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Not always, and that's the most important question when comparing plans. The treated tooth needs to be rebuilt: a larger filling, a post and, often for back teeth, a crown. It's the step that prevents the tooth from fracturing.
Why is retreatment different?
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Because it involves removing the material from the previous root canal, often taking off a post and crown, and only then treating. It's technically more demanding and usually takes more time than the first treatment.
How many visits does a root canal take?
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It depends on the tooth and the case. Situations with an established infection may need medication inside the canal between visits; teeth treated before things progress usually take fewer steps.
Are the X-rays included?
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X-rays at several stages are part of the procedure. With difficult anatomy or retreatment, a CT scan may be recommended, so it's worth confirming how this is covered in the plan.
Can a root canal be quoted over the phone?
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Only as an estimate. Without an X-ray, no one knows which tooth, how many canals, the curvature or the condition of the area around the root; in other words, no one knows what the treatment is.
Is extraction more affordable than a root canal?
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Prices aren't discussed here, but comparing by the first number is misleading: the extracted tooth needs to be replaced later with an implant or a prosthesis, and replacement is a whole other treatment.
Why shouldn't I choose by the lowest price when I'm in pain?
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Because a root canal depends on an accurate diagnosis and careful work. Incomplete treatment tends to come back as a retreatment, which is more complex, or as tooth loss.
Is follow-up charged separately?
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Check-up X-rays after a few months confirm healing of the area around the root. It's worth asking whether they're included in the plan and when they'll be taken.
Does a calcified canal change the treatment?
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It changes the time and difficulty. Canals calcified by old trauma or age make access and cleaning take longer, and that shows up in the planning.
What should I ask when I receive a root canal quote?
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Which tooth and how many canals; whether it's a first treatment or a retreatment; how many visits are planned and what could increase them; whether X-rays are included; and, above all, whether rebuilding the tooth is included.
Why is the price only given after the assessment?
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Because the clinical exam and X-ray define the procedure itself: which tooth, how many canals, in what condition and what will be needed to rebuild it. Before that, there's nothing to quote.
Where can I get a root canal assessment in Mooca?
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Dr. Cléo Salustiano (CRO-SP 170844) sees patients at Rua Hipódromo, 1141, in Mooca, São Paulo, Monday to Sunday, 8 a.m. to 10 p.m., in Portuguese, English and Spanish. An assessment with an X-ray defines what your tooth needs, and the plan is presented before any decision.
