Here's the one fact that should drive every decision about a cracked tooth: cracks only travel in one direction. Enamel can't heal, and every chew flexes the crack a little deeper. That doesn't mean every crack needs treatment — some need nothing at all. It means the question isn't whether the crack will change, but whether you'll deal with it while the fix is still simple.
The five kinds of cracks (and what each one needs)
| Type of crack | What it is | Typical fix |
|---|---|---|
| Craze lines | Hairline marks in the outer enamel only — extremely common in adult teeth | Nothing. Cosmetic only. |
| Small chip | A little corner of enamel broke off; no pain | Smoothing or a small filling |
| Fractured cusp | A whole corner of the tooth broke off or is about to — usually around a large old filling | Crown. Often no root canal needed if caught early. |
| Cracked tooth | A crack running from the chewing surface down toward the root | Crown, sometimes a root canal first if the crack has reached the nerve |
| Split tooth / root fracture | The crack has gone all the way — the tooth is in pieces or the root is fractured | Usually extraction → implant or bridge |
Notice the pattern: the same crack moves down that table over time. A fractured cusp handled this month is a crown. The identical tooth a year later may be a root canal plus a crown — or a split tooth that no one can save.
Why a crown — and not a big filling — for real cracks
A filling patches a hole; it doesn't hold a tooth together. A cracked tooth fails by flexing — every bite wedges the crack open a little. A crown works because it wraps the whole tooth in one continuous piece of high-strength ceramic, so chewing force compresses the tooth instead of splitting it. That's also why dentists recommend crowns over giant fillings on teeth that are mostly filling already: at some point there isn't enough natural tooth left to patch, only to protect. (We rebuild the missing structure first — the core buildup is included in our $799 flat fee.)
Symptoms that mean it's a real crack
- Sharp pain when you bite — and especially when you let go. Release pain is the classic cracked-tooth signature: the crack snaps shut and tugs on the nerve.
- Pain you can't quite locate. Cracks are notorious for being hard to pinpoint; X-rays plus a bite test find them.
- Cold sensitivity that's new on one tooth, especially one with a large old filling.
- A piece broke off, or your tongue keeps finding a sharp edge.
No symptoms but you can see a line? That's often just a craze line — worth mentioning at your next cleaning, not worth losing sleep over. Pain on biting is the dividing line.
The cost of waiting, in real numbers
| When you act | Likely treatment | Ballpark cost at our office |
|---|---|---|
| Early — pain just started, cusp intact | Crown | $799 flat, done in about a day |
| Later — crack reaches the nerve | Root canal + crown | Root canal fee + $799 crown |
| Too late — crack splits the root | Extraction + implant | $3,500 – $6,000+ and several months |
"Wait and see" feels free. It's usually the most expensive option on the menu.
What happens at the exam
We look, we X-ray, we test the bite — about 20 minutes to a straight answer. If it's a craze line, we'll tell you it needs nothing. If it needs a filling, that's what we'll recommend. If it needs a crown, it's $799 flat — exam, X-rays, and buildup included — and most crowns are seated within 24 hours. And if the tooth can't be saved, we'll tell you that too, with your options laid out honestly.
Get a straight answer about your cracked tooth.
Same dentist since 2006. Thousands of crowns. If it doesn't need a crown, we'll say so.
Common questions
Does every cracked tooth need a crown?
No. Craze lines need nothing; small chips often just need a filling. But a fractured cusp or a crack into the body of the tooth needs a crown — a filling can't hold a flexing tooth together.
Why does my tooth only hurt when I bite certain ways?
That's the crack flexing open under load and snapping shut on release — the classic cracked-tooth pattern. It often only happens at one angle, which is why it's easy to ignore and shouldn't be.
Can a cracked tooth heal on its own?
No. Enamel has no living cells to repair itself. Cracks either stay put or get deeper — and chewing pushes them deeper.
Will insurance cover a crown on a cracked tooth?
Usually yes — a cracked or broken tooth is exactly what the ~50% major-procedure coverage is for. Text a photo of your card to (801) 254-0713 and we'll verify before you come in.