Post and Core Crown: When a Root-Filled Tooth Can Be Saved, and When an Implant Is Better

Medically reviewed by Dr. Öznur Yedek, MSc — D-Care Turkey, Side / Antalya. Last updated: November 2026.

Questions about a broken or root-filled tooth? WhatsApp us: +90 537 264 78 42

A message we get a lot goes something like this: a back tooth had a root canal years ago, and now it has broken off near the gum line. Can it be saved?

Often it can, with what dentists call a post and core crown. Sometimes the root is too weak, and an implant is the safer choice. Here is how we work out which one makes sense.

Why a root-filled tooth sometimes needs a post

Once a tooth has had a root canal, it no longer has a nerve, and it has usually lost a fair amount of its structure to decay, old fillings or the treatment itself. If too little is left above the gum, a crown has nothing solid to grip.

The fix is to borrow support from the root. A post is placed inside the cleaned and filled canal, and a core is built around it to recreate the shape of a prepared tooth. The crown is then cemented over that core.

There are two common ways to do it. A fibre post is a glass-fibre rod bonded into the canal, with the core built up in composite in the same appointment. A cast post and core, often called an inlay-core in Europe, is a single piece made in the lab from an impression of the canal. Your dentist picks one based on how much tooth remains and how much biting force it takes.

Post crown or implant?

This is the real question, and nobody can answer it honestly from a photo. A post only makes sense if the root underneath is healthy and strong enough to last. Before suggesting one, we check:

• that the root canal filling is complete, with no infection at the tip of the root. If there is, it gets retreated first.

• that the root is long enough and shows no crack.

• that a little healthy tooth remains above the gum, so the crown can wrap around it. Dentists call this the ferrule, and it is what protects the root from splitting.

• that the gum and bone around the tooth are in good shape.

When all of that checks out, keeping your own root is usually worth it. When the root is cracked, very short, or weakened by an old metal post, rebuilding on it tends to buy time rather than solve the problem. In that situation we talk about removing the tooth and placing an implant, or sometimes a bridge.

If you are weighing up whether to keep a tooth at all, our article Root Canal vs Tooth Extraction: Which Option Is Better? covers that decision in more detail. The final call is always made after a clinical exam and X-rays.

What happens at our clinic in Side

If the tooth already has a sound root canal, the sequence is fairly short. We prepare the canal, place the fibre post or take the impression for a cast core, then shape the tooth and scan it with our intraoral scanner. You leave with a temporary crown while the final one is made. At D-Care Turkey most of these crowns are zirconia, and our prosthodontist checks the fit and bite before anything is cemented for good.

Things take longer if the root canal needs redoing or the X-ray shows infection. The tooth may need time to settle before anything goes into the root, and how long depends on your case.

For patients flying in from Belgium, we try to fit everything into one stay when the tooth allows it. When it doesn't, we say so in the treatment plan, so you can book your trips knowing what to expect. Treatment is done under local anaesthetic. Conscious sedation with an anaesthetist is something we use for bigger work such as multiple implants or All-on-4, and a single post crown rarely needs it.

What changes the cost of a post and core crown

People often ask for a price before we have seen the tooth. We would rather explain what moves it. Whether the root canal has to be redone is the biggest factor. A fibre post placed chairside and a lab-made cast core are different amounts of work. The crown material matters, as does how many teeth are involved and whether this tooth is part of a larger plan with other crowns or implants.

That is why our quotes are written after we have seen a recent X-ray. If you have one, send it over. If not, an exam in Brussels can provide it.

Back home: check-ups in Brussels

A post crown should be checked like any other crown, with extra attention to the root. A crown that feels loose, swelling in the gum next to it, or pain when you bite down are all worth having looked at soon, rather than waiting for your next trip to Turkey.

That is exactly what our Brussels clinic is for. At D-Care Belgium in Ixelles, an INAMI-contracted dentist can examine you before treatment and after it. The consultation is reimbursed the same way as with any contracted Belgian dentist. The Ixelles dentist gives an opinion and shares X-rays and photos with our team in Side, while the treatment plan, the quote and the final decision stay with D-Care Turkey. The clinic works in French and English, and the phone is answered Monday to Friday, 10:00 to 17:00.

D-Care Belgium — Avenue Auguste Rodin 12, 1050 Ixelles (Brussels)

Frequently asked questions

How long does a post and core crown last?

There is no fixed lifespan. It depends mostly on how much natural tooth is left, the quality of the root canal, your cleaning habits and whether you grind your teeth at night. Regular check-ups catch an opening margin or a new infection early.

My old post crown fell out. Can it just be cemented back?

Sometimes, if both the crown and the root are intact. Quite often, though, a crown comes out because of decay underneath or a crack in the root, and only an X-ray will tell.

Is a post crown or an implant the better option?

Neither, in general. A healthy root is worth keeping, and a weakened one makes an implant more sensible. It is a case-by-case decision after an exam.

Does it hurt?

The work is done under local anaesthetic. Some tenderness in the gum for a few days is common. Pain that gets worse instead of better should be reported to us.

Have a root-filled tooth that broke, or a post crown that came loose? Send us your X-ray on WhatsApp: +90 537 264 78 42

D-Care Turkey — Sorgun, 8114 Sok. No:16/1, 07600 Manavgat / Antalya

Our clinic in Brussels: D-Care Belgium, INAMI-contracted dentist in Ixelles (Avenue Auguste Rodin 12) — www.dcarebelgium.be