A crown protects and restores a weakened tooth. Photo: Pexels
1. A large filling that keeps breaking
When a filling takes up more than half the tooth, what is left is basically a shell. Every time you bite into something hard the shell flexes. Hairline cracks form. The filling loosens. Irene at our front desk sees this pattern all the time — a patient comes in for a "small chip" and Dr. Hoang finds the old filling has been on borrowed time for years. A crown wraps the whole tooth so there is nothing left to crack.
2. A cracked or fractured tooth
You might feel a sharp sting when you bite down, or notice sensitivity to hot and cold that was not there before. Sometimes you can see the crack, sometimes you cannot. Dr. Hoang uses a camera and magnification to find fracture lines that are invisible to the naked eye. He shows you the image right there on the screen — no guessing. If the crack has not reached the root, a crown can usually save the tooth.
3. A root canal that needs protection
After a root canal the tooth is still there, but it has no living nerve inside. Over time it becomes brittle, like a dried-out branch. Dr. Hoang almost always recommends a crown after root canal therapy. Without one the tooth can snap in half during a normal meal. We have seen it happen — and it is not a fun emergency visit.
Dr. Hoang walks through every option before starting work. Photo: Pexels
4. Worn-down or misshapen teeth
Grinding your teeth at night wears them flat. Acid reflux can erode enamel until the teeth look stubby and translucent. When the shape changes that much, your bite shifts and other teeth start taking damage too. A crown brings the tooth back to its original height and shape. If grinding is the cause, Dr. Hoang will also talk about a night guard to protect the new crown — and all the others.
5. Cosmetic issues that bonding cannot fix
Bonding works great for small chips and gaps. But if a front tooth is severely discolored, misshapen, or has multiple old repairs that keep staining at the edges, a crown gives a cleaner result. It covers the entire visible surface. Patients are sometimes surprised at how natural porcelain looks — we have had people forget which tooth is the crown.
Same-day crowns with CEREC
The old way meant a temporary crown, two weeks of waiting, and a second appointment. We do it differently. Dr. Hoang uses the CEREC system to scan, design, mill, and bond your permanent crown in a single visit. You walk in with a problem tooth and walk out with a finished crown. No goopy impressions, no temporary that pops off at dinner.
If any of the five signs above sound familiar, call 858.558.2121 or book online. We are open Saturdays until 2pm if weekdays are tough.
Related: Our Dental Services · When to Replace an Old Filling · Why Teeth Get Discolored
Our practice follows guidelines established by the American Dental Association (ADA) and the California Dental Association (CDA).