Why Are My Teeth Cracking All of a Sudden?
The usual reasons teeth start to crack, the signs that need a quick visit, and how cracks are repaired.
Tooth-colored fillings blend in with your teeth and can last many years. Here is how long they usually last, what shortens their life and how to make yours last.

The short answer
Tooth-colored (composite) fillings usually last between 5 and 15 years. Small fillings and fillings in front teeth tend to last longer, while large fillings in back teeth wear faster. Good oral hygiene, a night guard if you grind, avoiding very hard or sticky foods and regular checkups help them last.
Tooth-colored fillings are a popular choice because they blend in with natural teeth. They are a more natural-looking alternative to traditional silver (amalgam) fillings. One of the most common questions about them is: how long do tooth-colored fillings last?
On average, tooth-colored fillings last between 5 and 15 years, depending on the factors below. Some last longer with good care, while others need replacing sooner.
| Type of filling | Typical lifespan |
|---|---|
| Large fillings or fillings in back teeth | About 5 to 7 years |
| Small fillings or fillings in front teeth | About 10 to 15 years |
These are general estimates. Regular checkups help your dentist keep an eye on your fillings and tell you when one needs replacing.
Have an old filling that feels rough or sensitive? Book a checkup.
Book a consultationFillings don't last forever. Signs it may be time for a replacement include:
If you notice any of these, book a visit. A tooth with a very large or failing filling may need a crown instead. Read Porcelain, Metal, Zirconia and Composite Crowns.
We place and replace tooth-colored fillings for patients from Tustin, Irvine, City of Orange, Santa Ana and the rest of Orange County. Larwin Square Dentistry is at 604 E 1st St in the Larwin Square Shopping Center in Tustin. We're open Monday to Wednesday and Friday from 9:00 AM to 5:30 PM, and every Saturday from 8:00 AM to 2:30 PM. Call (714) 505-9462 or book online.
Silver (amalgam) fillings often last longer, but tooth-colored fillings look natural and bond to the tooth. With good care, composite fillings commonly last 5 to 15 years.
Yes, especially if it is old, large or under heavy biting pressure. If a filling falls out, call your dentist and avoid chewing on that side.
They can pick up some staining over time from coffee, tea, red wine and smoking. Polishing at your cleanings helps.
Cracks, a rough edge, new sensitivity or decay around the filling are common signs. Your dentist can check it at your next visit.
If a filling feels rough, sensitive or loose, book a checkup. Dr. Desai will check it and recommend the best way to protect your tooth.
The usual reasons teeth start to crack, the signs that need a quick visit, and how cracks are repaired.
How the main crown materials compare on strength, looks and lifespan, and where each one fits best.
What changes the cost of a root canal and crown, and how to pay without insurance.
This guide is general information, not a diagnosis. Book a visit for advice about your own teeth.