Root Canal Therapy: What Actually Happens During the Procedure

Root canals have a bad reputation they don't deserve. Most people who've had one say it felt no worse than getting a filling. If your dentist has recommended root canal therapy and you want to know what actually happens in that chair, this breaks it down clearly, step by step.

Why a Root Canal Is Needed

Each tooth has a soft core called the pulp. It runs through the root canals inside the tooth and contains nerves and blood vessels. When decay or a crack reaches deep enough, bacteria get into the pulp. The pulp becomes infected. That infection causes the throbbing pain most people associate with a bad tooth.

Left alone, the infection spreads. It can form an abscess at the root tip and eventually damage the surrounding bone. A root canal removes the infected tissue before that happens. The goal is simple: save the tooth.

Getting Numbed: The Part People Fear Most

The dentist numbs the area thoroughly before anything else. You'll feel a small pinch when the anesthetic goes in. After that, the tooth and gum around it go numb. Most patients feel pressure during the procedure but not pain. If you feel anything sharp, say so. The dentist can add more anesthetic.

Patients who are very anxious have options. Sedation dentistry is available for people who need extra help settling in. There's no need to white-knuckle through it.

What the Dentist Actually Does

Once you're numb, the dentist places a small rubber sheet called a dental dam around the tooth. It keeps the area dry and clean during the procedure.

Next, a small opening is made through the top of the tooth. Through that opening, the dentist uses thin files to remove the infected pulp from the canals. The canals are then cleaned, shaped, and rinsed. This is the core of the procedure. It sounds involved, but the tooth itself is numb, so you're mostly waiting while the dentist works methodically through each canal.

Dental X-rays are taken during the process to check that the files are reaching the full length of the root. This step matters. The canals have to be cleaned all the way to the tip.

Once the canals are clean, they're filled with a rubber-like material called gutta-percha. It seals the space so bacteria can't get back in. A temporary or permanent filling goes on top to close the access hole.

How Long Does It Take

A straightforward root canal on a front tooth with one root can take about 60 to 90 minutes. Back teeth, like molars, have two to four roots. Those cases take longer and sometimes require a second appointment to finish.

Your dentist will give you a realistic time estimate once they've reviewed your X-rays and confirmed how many roots are involved.

After the Procedure: What to Expect

The numbness wears off over a few hours. Some soreness around the tooth is normal for a day or two. Over-the-counter pain relievers handle it for most people. The tooth itself is now hollow, which makes it more fragile than it was before.

That's why a dental crown is almost always recommended after a root canal on a back tooth. The crown covers the tooth and protects it from cracking under the pressure of chewing. Without one, the tooth is likely to fracture. A dental filling may be enough for a front tooth that doesn't take as much bite force, but your dentist will tell you what's right for your situation.

Once the crown is on, the tooth functions like any other tooth. You can eat normally. You brush and floss it the same way. Most root canal-treated teeth last for many years with basic care.

Common Questions

Will the tooth hurt afterward?

Some tenderness for a day or two is normal. Persistent or worsening pain is not. Call the office if pain is getting worse after the first few days rather than better.

Can the infection come back?

It can, though it's uncommon when the procedure is done properly and the tooth is restored with a crown. Keeping up with regular dental exams and cleanings gives the dentist a chance to catch any problems early.

Is a root canal better than pulling the tooth?

Keeping your natural tooth is almost always the better option. Replacing a missing tooth with a dental implant or dental bridge works well, but it costs more and involves additional procedures. Saving the tooth with a root canal is simpler when the tooth is salvageable.

If you've been putting off a root canal because you weren't sure what to expect, now you know. It's a routine procedure and it stops pain rather than causing it. The team at Hastings Family Dental Care is happy to walk you through your specific situation before you commit to anything. Book a dental exam and get a clear picture of your options.