Do You Need a Crown After a Root Canal?
On the schedules that price both, the crown is roughly half of the total bill — and the endodontists' own guidance says it depends mostly on which tooth it is. Back teeth generally get one; front teeth often do not.
The answer, and the reason it is expensive
It depends on which tooth. The American Association of Endodontists puts it this way: "Needing a crown after a root canal depends highly on the location of the tooth in the mouth—teeth towards the back of the mouth like molars and premolars are needed more for chewing, and generally require crowns."
The NHS page on root canal treatment, reviewed on 3 October 2025, adds a different condition: "A crown (a cap that completely covers the tooth) may be needed if the tooth was badly infected." The American Dental Association describes a temporary filling going in during treatment, later replaced with "a regular filling or a crown to protect your tooth from further damage" — which is the same answer stated as a choice rather than a rule.
So: not always, mostly at the back, and the decision belongs to somebody who can see how much tooth is left.
Why this is the most under-quoted part of the bill
Every root canal line on all three schedules this site reads carries the same qualifier: excluding final restoration. That is not a footnote. It means the number you have been quoted for "a root canal" may not include the thing that makes the tooth usable again.
| What it is | Code | Pennsylvania | Montana | Washington DOC |
|---|---|---|---|---|
| Core build-up | D2950 | no line on this schedule | $158.08 | $350.40 |
| Porcelain or ceramic crown | D2740 | $500.00 | $790.40 | not on this schedule |
| Full cast base-metal crown | D2791 | $475.00 | $553.28 | not on this schedule |
| Post and core with a crown | D2952 | $80.00 | $316.16 | not on this schedule |
Put it next to the treatment. In Pennsylvania a molar root canal is $500.00 and a porcelain crown is $500.00 — the crown is exactly half of the $1,000.00 total. In Montana the canal, the build-up and the crown come to $1,501.76, of which the crown alone is just over half.
Two quotes for "a root canal" that look wildly different are very often the same quote, one counting the crown and one not. That is the single most useful sentence on this page.
What a core build-up is, and why it appears on the bill
Before a crown can go on, there has to be something for it to go on. A tooth that needed root canal treatment usually got there through deep decay, a crack or a fracture, and then had a hole made in the top of it to reach the canals. What is left may not be enough shape to hold a crown.
A core build-up rebuilds that shape. A post and core does something related when even less is left: an anchor is placed into one of the canals and the core is built around it. Both are separate codes at separate fees, and both can appear on a bill that somebody expected to say "root canal" and nothing else.
The spread on these is worth noticing. Montana allows $158.08 for a build-up and Washington allows $350.40 — more than twice as much for the same code. Pennsylvania has no build-up line at all, and prices a post and core at $80.00.
What happens if the crown does not get done
The honest answer is that we could not find a published figure for how often an unrestored tooth breaks, and so we are not going to give you one. What is on the record is the mechanism, and it is not mysterious. A tooth with the pulp removed has a hole in the top, less structure than it had, and no nerve to tell you when something is going wrong. A temporary filling is temporary. The ADA describes it being replaced later; that is the plan, not an option.
The other thing at stake is the seal. One of the ways a treated tooth gets into trouble again is bacteria getting back down the canals from above, and what stands between them and the canals is the restoration.
Questions to ask before you agree
- Does this tooth need a crown, or will a filling do — and what makes you say so?
- Is a build-up or a post needed, and is it in the price you have quoted me?
- What is the total for everything, listed line by line?
- What happens if I have the root canal now and the crown in three months?
- What materials are the options, and what does each cost?
That last question is not vanity. The schedules price crown materials differently — Montana allows $790.40 for a porcelain or ceramic crown and $553.28 for a full cast base-metal one, a difference of $237.12 on the same tooth for the same job. Where the tooth is in your mouth decides how much that difference should matter to you.
The full picture across all three documents, including the treatment itself and the exam that starts it, is on our page pricing root canal treatment from three published fee schedules. And if the tooth is still uncomfortable while you are deciding, what is ordinary in the days after treatment and what is a phone call is the chapter for that.
Questions about the crown
Is a crown always needed after a root canal?
No. The AAE says it depends heavily on where the tooth is, and that back teeth — molars and premolars — generally require one because of what chewing asks of them. The NHS adds that a crown may be needed if the tooth was badly infected. The ADA describes the temporary filling being replaced by either a regular filling or a crown. Which one applies to your tooth is a question for the person who can see how much of it is left.
Why is the crown not included in the root canal price?
Because on every published schedule we read, the root canal line is explicitly written "excluding final restoration" and the crown is a separate procedure code at a separate fee. That is how the billing is structured, not a trick — but it does mean a quote can be accurate and still be half the story, so the useful question is always whether the restoration is in the number.
How much does a crown after a root canal cost?
On the schedules that price one, $500.00 in Pennsylvania and $790.40 in Montana for a porcelain or ceramic crown; $475.00 and $553.28 respectively for a full cast base-metal one. Washington's document is an endodontic schedule and carries no crown line. These are payer allowed amounts, not what a private practice charges, and no free source publishes the latter.
Can I have a filling instead of a crown to save money?
Sometimes, and the ADA's own wording allows for it. Whether it is a reasonable plan for your tooth depends on how much sound structure is left and what that tooth does when you chew, which is exactly the thing that cannot be judged from a distance. Ask directly, and ask what the risk of the cheaper option is rather than only what it costs.
How long can I leave the tooth before getting the crown?
We found no sourced answer to that and will not guess at one. What is not in doubt is that a temporary filling is temporary and that the restoration is part of the treatment rather than a follow-on purchase. If the delay is financial, say so to the practice — being told what the risk of waiting is, for your tooth specifically, is more useful than a deadline from a web page.
Carry on
The prices behind all of this are on what a root canal costs on three fee schedules.
Anaesthetic and Sedation for a Root Canal
Local anaesthetic is the default and is included in the procedure — it has no separate line on any schedule we read. Sedation is a different thing entirely, billed by the quarter hour, and it is worth knowing what that costs before you say yes.
Endodontist or General Dentist: Who Does Root Canals
Both do. An endodontist is a specialist with at least two further years of training after dental school, and by their own association's figure only about three per cent of dentists are one.