Chipped tooth that looks green or dark inside — is it serious?
Green or dark discoloration inside a chipped tooth can mean decay, staining, or a deeper problem — it needs prompt evaluation by a dentist, but it's usually very treatable.
Medically reviewed by Dr. Jose, DDS — June 9, 2026
Call 911 or go to the ER for these signs
Some dental problems are medical emergencies. Get emergency care right away if you have:
- Difficulty breathing or swallowing
- Swelling of the face, jaw, floor of the mouth, or neck — especially if it is spreading
- Swelling that affects your eye or makes it hard to open your mouth
- A high fever combined with mouth or facial swelling
- Bleeding that won't stop after 10–15 minutes of firm pressure
- A knocked-out adult tooth, or an injury to the jaw, head, or face
When in doubt, consider it an emergency and seek care now.
Seeing green or dark color inside a chipped tooth is unsettling, but take a breath: it’s a sign to get checked promptly, not a sign the tooth is doomed. Most of these turn out to be very treatable.
What the discoloration can mean
- Decay — bacteria may have been working under the surface before the chip exposed it
- Old filling material — corroded or stained material can look dark or greenish
- Stained dentin — the layer under the enamel is naturally darker and stains more easily
- Pulp involvement — less commonly, discoloration reflects a problem deeper in the tooth
You can’t tell which of these it is by looking — and neither can anyone online. That’s what the exam and x-ray are for.
Why prompt care matters
- If it’s decay, it spreads — and a small fix now can prevent a bigger one later
- Decay that reaches the nerve can cause real pain and infection
- The chip itself leaves the tooth more vulnerable to further damage
What to do now
- Book a dental visit promptly — sooner if you have pain or sensitivity
- Keep the area clean — brush gently; don’t pick at the chip
- Avoid chewing on that side and skip very hard foods
- Watch for urgent signs — growing pain, swelling, or fever mean get seen now (see the emergency-care box above)
What the dentist will check
- An x-ray to see how deep the discoloration goes and whether the nerve is involved
- The chip itself — how much tooth structure is affected
- Treatment options — commonly a filling; a crown if more structure is lost; root canal treatment only if the nerve is involved
Ask for an itemized estimate and an explanation of why a particular treatment is recommended — a good dentist will walk you through the x-ray.
How MediMouth helps
If you don’t have a dentist or need to be seen quickly, tell us what’s going on and we’ll help you find prompt care near you in Arizona.
Frequently asked questions
What does it mean if my tooth is dark inside?
Dark or discolored areas inside a chip can mean decay, staining, corroded old filling material, or in some cases a problem reaching the inner pulp of the tooth. You can't tell which from the outside — a dentist needs to examine it, usually with an x-ray.
Is a green spot on a tooth decay?
Not necessarily — it can also be staining or old filling material. But decay is one real possibility, and decay inside a chip tends to progress. Have a dentist look at it promptly rather than waiting to see what happens.