Do you need one? What the symptoms mean
| What you feel | What it usually means |
|---|---|
| Lingering ache after hot or cold — lasting minutes, not seconds | The nerve (pulp) is inflamed and probably not recovering. A root canal is likely. |
| Spontaneous throbbing, worse at night or lying down | Classic irreversible pulpitis — the tooth needs treatment soon, and this is the pain that stops the moment the nerve is removed. |
| Pain on biting or a tooth that feels "high" | Infection has reached the bone around the root tip, or the tooth is cracked. An X-ray tells us which. |
| Swelling of the gum or face, a pimple on the gum, bad taste | An abscess. Call us today — emergency guidance here. If swelling affects breathing or swallowing, go to hospital. |
| A tooth that has gone dark, with no pain | The nerve may have died quietly after an old injury. It still needs treating before it flares. |
| Pain that suddenly stopped on its own | Not good news — the nerve has usually died. The infection continues silently until it abscesses. |
What actually happens
- Diagnosis first. A digital X-ray and a few simple tests confirm which tooth it is and whether it can be saved. Not every toothache is a root canal; cracks, deep fillings and gum problems can mimic one.
- Profound anaesthesia. The tooth is fully numbed before anything starts. For a "hot" inflamed tooth this can take an extra few minutes and an extra technique — we take that time.
- Rubber-dam isolation. A thin sheet isolates the tooth from saliva and keeps disinfectant out of your mouth. It is the standard of care in endodontics, and we use it on every case without exception.
- Cleaning and shaping under magnification. The inflamed or dead nerve is removed and each canal is shaped with modern rotary instruments and disinfected. Magnification lets us find canals that a naked eye misses — missed canals are the main reason root canals fail.
- Filling and sealing. The clean canals are filled and sealed, and the tooth is closed with a permanent filling — never a temporary you're left to forget about.
- Protecting the tooth. Back teeth usually need a crown afterwards; front teeth often don't. You know which from the written quote, before treatment starts.
One visit or two?
Most root canals here are completed in a single appointment of 60–90 minutes. We plan two when there is a large infection that benefits from medication between visits, when a tooth has unusually complex anatomy, or when we are re-treating a previous root canal that failed. We tell you which to expect at the start — and we don't stretch one-visit cases into two.
Why rubber dam and magnification aren't optional
Two things separate root canals that last from those that don't. Isolation: a canal re-contaminated by saliva during treatment is a canal that reinfects. The rubber dam prevents that, and also protects you from swallowing instruments or irrigant. Visibility: molar canals are fractions of a millimetre wide and often hidden; working under magnification finds them. Ask any clinic whether they use both routinely — it is one of the most revealing questions in our checklist for choosing a dentist in Beirut.
Root canal or extraction and implant?
If the tooth is restorable, saving it is almost always better: you keep your own root, the bone around it, and a natural bite — and a root canal plus crown costs less than an extraction followed by an implant and crown. We recommend extraction honestly when the tooth is cracked through the root, has too little structure left to hold a crown, or has already failed re-treatment. Either way, the choice is explained and quoted in writing, and it is yours.
Afterwards
Expect mild tenderness on biting for a few days; ordinary painkillers handle it. Avoid chewing hard food on the tooth until its crown or final filling is placed. If pain increases after the second day, or swelling appears, call us — that is rare and easily managed early.
One more thing to know for later: a front tooth that darkens in the years after a root canal is common, and it does not need a crown or a veneer first. Internal bleaching lightens it from the inside over two or three short visits, and it is the conservative option to try before anything is cut.