Root Canal Treatment: Procedure, Steps and What to Expect
Medically reviewed by Dr. Vyshnavi, MDS (Prosthodontist & Implantologist) — 9 July 2026
If you’ve been told you need a root canal, the unknown is usually scarier than the treatment. Here is exactly what happens — step by step, in plain language — from the moment you sit down to the day your crown is fitted. Written by the specialist team at V R Dental, Kukatpally, Hyderabad.
The short answer: a root canal removes the infected nerve tissue inside your tooth, disinfects the hollow canals, and seals them. You are numb throughout. Most patients say it felt like a long filling — and that the toothache they walked in with was gone by evening.
What a Root Canal Actually Treats
Inside every tooth is soft tissue called pulp — nerves and blood vessels running from the crown down narrow channels in the roots. When deep decay, a crack or trauma lets bacteria reach this pulp, pressure builds inside a space that cannot expand. That is the throbbing pain that keeps you up at night.
A filling repairs the surface. A root canal treats the inside. Once the infected pulp is removed and the canals are sealed, the tooth no longer feels pain — but it keeps doing its job in your bite for years, usually decades.
The Procedure, Step by Step
Step 1 — Diagnosis and imaging
We examine the tooth, test how it responds, and take a digital X-ray to map the number, length and curvature of the canals. This map is why our procedures are predictable rather than exploratory.
Step 2 — Anaesthesia and isolation
The tooth is numbed with modern local anaesthetic delivered gently. A thin rubber sheet (rubber dam) isolates the tooth, keeping it dry and free of saliva-borne bacteria — a step many clinics skip and one of the quiet markers of quality endodontics.
Step 3 — Access
A small opening is made in the biting surface to reach the pulp chamber. You feel vibration and pressure, not pain.
Step 4 — Cleaning and shaping
The infected tissue is removed. Flexible rotary nickel-titanium instruments clean and shape each canal, working under magnification so narrow and hidden canals aren’t missed — the most common cause of failed root canals. Antibacterial irrigants flush the canal system; laser-assisted disinfection is added for heavily infected teeth.
Step 5 — Filling and sealing
The clean, dry canals are filled with gutta-percha, a biocompatible material, and sealed to keep bacteria out permanently. An X-ray confirms the fill reaches the exact tip of each root.
Step 6 — Restoration
A temporary filling closes the access point. Within a few weeks, a permanent filling or crown is placed. For molars, the crown is not optional — it protects the tooth against chewing forces of up to 70 kg.
How Long Does It Take?
A front tooth with one canal: about 60 minutes. A molar with three or four canals: 90 minutes or slightly more.
Straightforward cases are completed in a single visit — you leave with the infection removed the same day. Heavily infected teeth sometimes need two visits, with a medicated dressing working between appointments. We tell you which applies before we begin, never midway.
During the procedure: no sharp pain. The anaesthesia used today is effective even in “hot” (acutely inflamed) teeth, and we use painless injection techniques and don’t start until you’re fully numb.
After the procedure: mild soreness for one to three days is normal — the tissues around the root are healing. Ordinary pain relief manages it. What disappears immediately is the deep, throbbing infection pain that brought you in.
If you’ve heard root canals described as agonising, that reputation comes from decades-old dentistry. We’ve collected the most common misconceptions — and the evidence against them — here: Root canal myths, debunked.
Recovery and Aftercare
- Chew on the other side until the permanent crown is placed
- Take any prescribed medication for the first day or two
- Brush and floss normally — the treated tooth needs the same hygiene as every other
- Return for the crown on schedule; delaying it is the main reason treated teeth fracture
- Call us if pain worsens after day three, swelling appears, or the temporary filling comes out
With a good seal and a well-fitted crown, a root canal-treated tooth routinely lasts decades.
Single Visit vs Multiple Visits
Single-visit treatment suits most teeth with contained infection: less time off work, one round of anaesthesia, immediate sealing.
Multi-visit treatment is the safer choice when there’s active pus, severe swelling or complex retreatment — rushing those cases lowers success rates. The decision is clinical, not commercial, and we explain our reasoning in every case.
What It Costs
Fees depend on the tooth — front teeth are simpler than molars — and on whether a crown is needed afterwards. Rather than quote a vague figure here, we’ve published a complete transparent breakdown: Root canal treatment cost in Hyderabad.
When a Root Canal Isn't the Answer
Honesty matters more than a procedure sold. Some teeth need only a filling. A few are too damaged to save and are better extracted and replaced. And a previously treated tooth that has flared up again usually needs retreatment rather than a first-time root canal.
The examination determines which path fits your tooth — and if another clinic has advised extraction, a second opinion costs far less than losing a saveable tooth.
Frequently Asked Questions
How many sittings does a root canal take?
Most cases: one sitting of 60–90 minutes. Severely infected or retreatment cases: two to three shorter visits. The X-ray and examination tell us which before we start.
Can I eat after a root canal?
Yes, once the numbness wears off (2–3 hours). Stick to softer food and chew on the opposite side until your permanent crown is placed.
Do I really need a crown afterwards?
For molars and premolars, yes — a root canal-treated back tooth without a crown is significantly more likely to fracture. Front teeth with enough remaining structure can sometimes be restored with a filling alone.
Can a root canal fail?
A small percentage do, usually due to hidden canals or a leaking restoration. Magnification and rubber-dam isolation — standard in our protocol — target exactly those causes. If an older root canal fails, retreatment saves the tooth in 80–88% of cases.
Is a root canal safe during pregnancy?
Generally yes, ideally in the second trimester, with appropriate shielding for X-rays. Untreated dental infection poses a greater risk than the treatment. Tell us about your pregnancy and we’ll plan accordingly.
What happens if I delay treatment?
The infection doesn’t wait. It can spread into the jawbone, form an abscess, cause facial swelling, and turn a saveable tooth into an extraction case. Earlier treatment is simpler, cheaper and more successful.
Ready to Stop the Pain?
Specialist-led, painless root canal treatment at V R Dental, Kukatpally — same-day appointments for urgent pain, seven days a week.
Call +91 77804 75090 | Book online | Learn more: Root canal treatment in Kukatpally