Root Canal or Pull the Tooth? What Each Choice Costs You Later

You have just heard that a tooth needs a root canal, and a simpler thought follows straight away: why not take it out? Removing it sounds quicker, and the problem seems to leave with the tooth.

That is a fair question, and the answer is not that one choice is always right. Root canal vs tooth extraction is a choice between two different futures for that part of your mouth. Removal ends the infection on the day. It also starts a slow set of changes in the bone and in the teeth around the gap. This post explains those changes, what a saved tooth needs in order to last, and when removal really is the better call.

What does a root canal actually fix?

Inside every tooth is the pulp, a core of nerve, blood vessels and soft tissue that runs down a narrow channel in each root. When decay or a crack lets bacteria reach it, the pulp becomes inflamed and then infected. It cannot heal the way a cut on your hand heals. It sits inside hard walls, and its only blood supply enters through a tiny opening at the root tip.

A root canal removes that infected tissue, cleans the channels and seals them. The tooth stays where it is, held in the bone by the same ligament as before. So the bone around it keeps getting the chewing pressure that keeps it healthy. Our earlier post on root canal therapy walks through the visit itself, step by step.

What happens in your mouth after a tooth comes out?

An extraction also ends the infection, because the infected tooth is gone. The changes come afterwards, and they carry on whether or not you notice them.

The bone shrinks

The bone that wrapped around the root was there to hold the tooth. Once the root is gone, the body stops maintaining that bone, and the ridge gets thinner. A systematic review of 20 studies found the ridge lost 29 to 63 percent of its width about six months after an extraction. Most of that loss came in the first three to six months, and the ridge kept shrinking more slowly after that.

The neighbors tip and the opposite tooth drifts

Teeth hold each other upright, like books on a shelf. When one comes out, the teeth on either side tend to lean into the space. The tooth in the opposite jaw has nothing to bite against, and it can keep moving out of its socket toward the gap. A study of 91 patients found that partial contact with an opposing tooth did not stop this drift. A partial bite cannot be trusted to hold a tooth in place.

Why this matters later

A tipped tooth traps food against the gumline, and a drifted tooth changes the way your upper and lower teeth meet. Both make the space harder to fill later on. A dental implant needs enough bone width to sit in, so a thinner ridge can mean a bone graft first. A dental bridge needs the teeth on each side to stand straight enough to carry it.

So for a back tooth that matters to your bite, extraction usually leads to a second decision about what fills the space. That second treatment comes with its own visits and its own written estimate, and it belongs in the comparison from the start.

Why does a tooth need a crown after a root canal?

To reach the pulp, the dentist makes an opening through the top of the tooth. Add the decay that came out before that, and much of the inner support is gone, leaving a shell of outer walls.

Back teeth take the heaviest chewing force, and that force tends to wedge those walls apart until one of them splits. A crown covers the whole top of the tooth and holds the walls together. The bite then presses down on the crown instead of prying the walls open. A study of 203 root-treated teeth found that teeth left without a crown were lost at six times the rate of crowned teeth. That study came from one university's patient records, so read the exact number as one measurement rather than a rule.

So the honest comparison is not a root canal against an extraction. It is a root canal plus a crown, against an extraction plus whatever replaces the tooth, or an extraction plus the changes described above.

When is removing the tooth the right choice?

Saving a tooth only makes sense when there is enough of a tooth left to save. Removal is often the better choice in the four situations below.

• The crack runs down into the root. A vertical root fracture splits the root itself, and sealing the canals cannot close that split, so bacteria keep leaking along it. Our post on cracked teeth explains why these cracks rarely show up on an X-ray.

• The tooth has broken below the gumline. When the break goes too deep, there is no solid edge left above the bone for a crown to grip.

• Too little tooth is left. Once the decay is cleaned out, some teeth have no walls left that could hold a filling or a crown in place.

• The tooth has lost its bone support. Severe gum disease can leave a tooth loose because the bone around it is gone. A root canal treats only the inside of the tooth.

Not every gap needs filling, either. A removed wisdom tooth is not normally replaced. It sits at the end of the row, so removing it leaves no space between two teeth for a neighbor to lean into. Our post on wisdom teeth covers when they have to come out.

How do you decide between a root canal and an extraction?

The decision starts with the tooth itself, not with which procedure sounds easier. What decides it is how much healthy tooth is left, whether a crack reaches the root, and how much bone still holds the tooth. Once those are known, you choose between the two paths.

Both are done under local anesthetic, and you can ask us to pause at any time. One honest note: we do not offer sedation of any kind. If you need to be sedated for treatment, it is better to know that now.

When you weigh the two paths, ask for these three things before you decide.

1. Both paths in writing. A root canal plus a crown on one side, and an extraction plus the replacement you would want on the other.

2. What happens if you leave the gap. Ask about that tooth in your own bite, not about missing teeth in general.

3. Your benefits checked with your plan. We work with many PPO plans and accept Virginia Medicaid through DentaQuest, so call to verify your specific plan.

You decide what happens next, with both options in front of you rather than under pressure in the chair.

Ready to get started? Schedule a visit with Front Royal Dental Group, or call (540) 636-2003.