Tooth Discoloration: Causes and Whitening in Los Angeles

Noticing that your smile looks duller in photos than it used to can chip away at your confidence, especially when you brush and floss every day. At Forever Smile Dental Care in Los Angeles, Dr. Mehrshad Shelyan looks at what is causing the color change first, because the cause decides whether in-office Zoom whitening, take-home trays or another option will give you the brighter smile you want.

Stains that sit on the surface

Most everyday discoloration sits on the outer layer of the tooth, the enamel, and builds up slowly from what we eat, drink and do. Coffee, tea, red wine and deeply colored foods all carry pigments that cling to enamel, and tobacco leaves stubborn yellow and brown stains that deepen over the years. The ADA's MouthHealthy page on teeth whitening lists these same everyday causes.

Surface stains respond best to whitening, and a professional cleaning on its own often brightens them noticeably, which is one more way regular cleanings and checkups pay off for your smile.

Color that comes from inside the tooth

Some discoloration lives beneath the enamel, in the layer called dentin, and it behaves differently. As we age, enamel naturally thins and lets more of the yellower dentin show through, which is why teeth can look darker over time even with great home care. A knock to the mouth can darken a single tooth, sometimes months after the injury, and certain medications taken while teeth are still forming, such as some antibiotics in childhood, can leave lasting gray or brown bands.

A tooth that has turned dark on its own deserves an exam before anything else, because the color change can signal a problem with the nerve inside that needs care first.

Brightening your smile with professional whitening

For stains that whitening can reach, we offer Zoom in-office whitening, which can lighten your smile several shades in a single visit under our supervision, along with pre-filled take-home trays for patients who prefer to whiten at their own pace or keep their results fresh. Professional whitening is stronger and more even than store-bought strips, and we take steps to keep you comfortable if your teeth tend to be sensitive.

Yellow tones usually brighten well, while brown and gray tones can be slower to respond or may not change much at all, so Dr. Shelyan will tell you honestly what to expect before you begin.

Choosing another path when whitening is not enough

When the color comes from deep inside a tooth or from an old filling or crown, whitening alone may not match it, because whitening gel only changes natural tooth structure. In those cases porcelain veneers, bonding or a new crown can give you an even, natural color, and we will walk through each option with you so you can choose what feels right.

Keeping your brighter smile longer

Once your teeth are brighter, small habits help the color last: rinsing with water after coffee, tea or red wine, drinking dark beverages through a straw when you can, not smoking and keeping up with your cleanings. Occasional touch-ups with take-home trays can refresh your results whenever you feel they need it.

Questions about tooth stains

Why are my teeth turning yellow even though I brush every day?

Brushing removes plaque, but it cannot lift every pigment from coffee, tea or wine, and enamel naturally thins with age, letting the yellower layer underneath show through. At our Los Angeles office, Dr. Shelyan can tell you which cause is behind your color change and whether whitening is likely to help.

Can whitening fix a single dark tooth?

Often not on its own. A single tooth that darkens after an injury or over time may have a problem inside it, so Dr. Shelyan examines it first at our Los Angeles office. Depending on the cause, treating the tooth and then placing a veneer, bonding or a crown may give the most natural match.

Is professional whitening safe for my teeth?

Yes, when a dentist supervises it. Professional whitening is stronger and more even than store-bought kits, and our Los Angeles team checks your teeth and gums before we begin. Some patients feel temporary sensitivity that fades quickly, and we can recommend products to keep you comfortable throughout.

Will whitening change the color of my fillings or crowns?

No. Whitening gel brightens natural tooth structure, but it does not change the color of fillings, crowns or veneers. If you have visible dental work, Dr. Shelyan will plan with you at our Los Angeles office so your natural teeth and your restorations end up matching each other.