In short: Your own tooth is almost always the better solution — it sits in grown bone and maintains it. A root canal removes the inflamed tissue from the canal system and seals it. Success rates are high when carried out carefully. Against preservation: a deeply fractured tooth, too little remaining substance for a stable restoration, or extensive bone loss.
Root canal treatment has a worse reputation than it deserves. That reputation comes from a time before magnification, electronic length measurement and modern anaesthesia. Today the procedure is mainly a question of precision and time — not of pain.
Why a tooth needs root treatment
Inside every tooth is soft tissue with nerves and blood vessels. If bacteria reach it — through deep decay, a crack or trauma — it becomes inflamed. Because the tissue is enclosed in a rigid canal, the swelling cannot expand: that is the typical throbbing toothache, often worse at night. Left untreated the tissue dies, the bacteria spread towards the root tip and inflammation develops in the bone. That can stay silent for a long time and still destroy bone.
How the treatment works
- Local anaesthetic, then access to the canal system through the chewing surface
- Isolating the tooth so that no saliva or bacteria run in
- Preparing all canals — length and course are measured, not estimated
- Disinfection with irrigating solutions that also reach the fine side canals
- Sealing the canal system, then a stable restoration of the crown
Depending on findings this happens in one or two sessions. An important and often underestimated point is the last one: a root-treated tooth is more brittle than a vital one. Without a stable restoration — often a partial crown or crown — it fractures under chewing load, and then the whole treatment is lost. That restoration is part of the treatment, not one of the options.
When extraction is the more honest recommendation
No tooth is preserved at any price. Against preservation: a longitudinal root fracture, too little healthy substance above the bone for a sealed restoration, far-advanced bone loss from periodontitis, and a canal system that cannot be adequately prepared. In those cases extraction followed by an implant or a bridge is the more reliable solution — and the extraction should then happen sooner rather than later, because there is less bone with every month.
If it comes back after treatment
A root-treated tooth can cause discomfort again years later, for instance if an undetected side canal harbours bacteria. Then there are two routes: revision, meaning renewed preparation of the canal system, or an apicoectomy, where the affected root tip is removed surgically. Neither is a failure; both are a normal part of the treatment chain.
In consultation we tell you openly how we rate the chance of preservation in your case — including when that assessment argues against the more elaborate treatment.
Frequently asked questions
Does a root canal hurt?
The procedure is carried out under local anaesthetic and is generally pain-free. If the tooth is severely inflamed the anaesthetic can be harder to establish — that is known and solved with additional techniques. In the days afterwards the tooth is often tender to bite on.
How high are the success rates?
With careful preparation and a tight seal they are high. The decisive factors are complete canal preparation and the subsequent stable restoration of the crown.
What does German insurance cover?
The basic treatment is covered for patients with statutory insurance under certain conditions. Additional services that improve the prospects — more elaborate measurement or irrigation protocols — are often invoiced privately and set out in the cost plan beforehand.
Is a root-treated tooth dead tissue in the body?
The tooth no longer has vital inner tissue but remains connected to the bone through the periodontal ligament and is fully functional. A tightly sealed, inflammation-free tooth is considered worth preserving.
This article provides general information and does not replace a dental examination. Medically reviewed by Dr. F. J. Rodríguez Ruíz, MSc., dentist at A+ Dental, Düsseldorf-Oberkassel.