Preventive Care
Seven Signs You Might Need a Root Canal (And Why Waiting Makes It Worse)
A tooth that needs a root canal rarely goes quiet on its own. Here are the seven signs we look for, what the procedure involves, what it costs and why waiting makes it worse.
- root canal
- toothache
- preventive care
Start here
A root canal is not the disaster people imagine
Few words make people flinch like root canal. Done well, it does not cause pain. It ends pain, and most patients say the appointment was easier than the toothache that brought them in.
What deserves your worry is waiting. An infected pulp does not heal on its own, and a tooth that could have been saved often needs an extraction months later.
Below are the seven signs we look for. If you recognise two or three, book a visit rather than a wait. Our general dentistry team can examine you at /services/general-dentistry.
The seven signs
What to watch for
These symptoms most often point to an inflamed or infected nerve.
-
Sharp pain when you bite
An electric jolt when you chew often means the nerve is inflamed or the tooth is cracked.
-
A deep, throbbing ache
An ache that pulses with your heartbeat and worsens when you lie down.
-
Sensitivity that lingers
Pain that lasts thirty seconds or more after cold is gone suggests nerve damage.
-
Pain that wakes you
A toothache that pulls you from sleep is a strong sign of an infected pulp.
-
Tender or swollen gums
A swollen, puffy area around one tooth can mean an abscess is forming.
-
A pimple on the gum
A bump that comes and goes, sometimes with a bad taste, is a drainage channel.
-
A tooth that has darkened
A single tooth turning grey often means the pulp inside has died.
Telling them apart
A mild twinge or a real problem?
Not every sensitive tooth needs a root canal. This is the pattern we use.
| Symptom | Usually mild | Often a root canal |
|---|---|---|
| Reaction to cold | Fades in a second or two | Lingers thirty seconds or more |
| Pain on biting | Slight tenderness for a day | A sharp jolt when you release |
| Pain at night | Uncommon | Common, and wakes you up |
| Gum changes | Mild irritation from brushing | A boil or drainage near one tooth |
| Tooth colour | Stable over time | One tooth darkens after an injury |
If you are unsure which column you fall into, that is what an exam and an X-ray are for.
The procedure
What a root canal actually involves
If you have never had one, the unknown is the scariest part.
-
Numbing and isolation
We numb the tooth and place a rubber dam to keep it clean and dry. You should feel pressure, not pain.
-
Access and cleaning
A small opening is made, and the infected pulp is removed with fine instruments. Each canal is measured precisely.
-
Shaping and disinfecting
The canals are shaped and flushed with disinfecting solutions, which is what actually kills the bacteria.
-
Sealing and rebuilding
The canals are filled and sealed, then a crown protects the tooth from cracking a few weeks later.
Good to know
Root canal questions, answered
These are the concerns patients bring up most.
Does a root canal hurt?
The procedure should not hurt, because the tooth is fully numbed and the point is to remove the source of pain. Mild tenderness for a few days afterwards is normal.
Can I just take antibiotics instead?
Antibiotics can calm the surrounding infection, but they cannot reach the dead tissue sealed inside the tooth. A root canal is the only way to clean it.
What does a root canal cost?
In our area it runs $700 to $1,200 for front teeth and up to $1,500 for molars, because molars have more canals. The crown afterwards is $800 to $1,500.
Is it better to just pull the tooth?
Sometimes an extraction is right, especially if the tooth is cracked below the gum line. But saving a natural tooth usually costs less long term.
How soon should I be seen?
Call within a few days rather than weeks. With severe pain or facial swelling, call us right away at (816) 555-0199 and go to the ER if swallowing is affected.
Keep reading
More from the TrueNorth journal
-
Preventive Care
How Often Should You Actually See the Dentist?
Six months is the right default for many adults, but not for everyone. Here is how dentists choose a recall interval, what changes it, and the warning signs that mean you should not wait.
Read article
-
Orthodontics
Clear Aligners vs Braces: An Honest Comparison
Both options straighten teeth well, but they suit different mouths, budgets and lifestyles. An orthodontist explains who does best with each, what they cost and how long treatment takes.
Read article
-
Emergency Care
Dental Emergency? Here Is Exactly What to Do in the First 30 Minutes
The first thirty minutes of a dental emergency often decide whether a tooth can be saved. Here is what to do for a knocked-out tooth, a broken crown, swelling and severe pain.
Read article
A tooth that is talking to you deserves an answer.
Come in for a quick exam and X-ray before a small problem becomes a big one. We will tell you plainly what the tooth needs, and what it can wait for.
- Same-day emergency appointments
- $99 new-patient special
- Written estimates before treatment
Two ways to start
Book an exam Call (816) 555-0182Mon–Thu 8a–6p · Fri 8a–5p · Sat 9a–2p
In pain now? Call (816) 555-0199