Pearly whites gone dingy are one of the most common complaints dentists hear from their patients. But what actually causes stained teeth?
Tobacco, whether smoked or chewed, is one of the worst offenders. Coffee, tea, and colas are culprits as well. Other possible causes include fruit juices (especially grape), red wine, blueberries, soy sauce, and curry. Think of it this way: if a food or beverage can leave permanent stains on clothes or carpets, it can probably taint your teeth.
Aging also contributes to the yellowing of teeth. The enamel, which is the hard outer coating of your teeth, wears thin, allowing the underlying layer of yellowish dentin to show through.
And some stains are what’s called intrinsic. That is, they actually occur on the inside of the tooth. For example, children who take the antibiotic tetracycline (or whose mothers took it during pregnancy) often have such stains. Silver-colored fillings can sometimes leach out and stain the surrounding tooth.
How to Tell If You Can Remove Stains at Home
Some folks simply go ahead and take matters into their own hands, risking damage to their teeth and gums in the process. Before you can safely take action, however, you have to understand what kind of stains are dulling your teeth. And you need to be realistic, too, in what you seek: even the healthiest, most perfectly maintained teeth are not pure white.
Only your dentist can correct intrinsic stains, through the use of such cosmetic procedures as composite resin bonding and porcelain laminate veneers (which essentially cover the offending colored area with opaque material). Stains from food and drink can often be removed with a professional dental cleaning. A more expensive and time-consuming option is in-office bleaching.
Why Daily Hygiene Fights Tooth Staining
Once you’ve had the stains removed, follow the home remedies below to keep them from occurring in the future.
Keep your teeth clean. That means daily brushing. An electric toothbrush may be more effective if you don’t do a thorough job manually. But don’t get carried away; bearing down too hard when you brush or using a hard-bristled brush can create grooves in the teeth at their roots. You can brush with a light touch and still do a thorough cleaning job.
Floss. Ever notice how stained teeth look worse around the edges? That’s because the plaque (a thin, nearly invisible layer of bacteria and food debris) that accumulates between teeth and at the gum line attracts stains like a magnet. Limit plaque with flossing, and you’ll fight stains, too.
Why coffee and tea ruin your smile
Think about how a white mug looks after a month of black coffee. Now look in the mirror. The chemistry is identical. Coffee, black tea, and dark colas deposit pigments on the enamel surface. It is not just about what you drink; it is about how often you expose your teeth to it.
Continuous sipping keeps the acid and pigment in contact with your enamel for hours. That is the worst strategy. If you are going to drink these beverages, drink them in one or two sittings. Finish the cup, brush your teeth, and move on.
How to reduce exposure with simple tools
A straw helps. Not for hot coffee, obviously, but for iced tea, soda, or fruit juice. A plastic straw directs the liquid toward the back of your mouth, reducing direct contact with the front teeth. It is a small change, but it lowers the surface area exposed to staining agents.
Why abrasive toothpastes can backfire
You will see toothpastes marketed specifically for smokers or heavy coffee drinkers. They often contain high levels of abrasive compounds. They scrub away the stain, yes. They also scratch the enamel.
Scratched enamel is rougher. Rougher surfaces trap pigments more easily. You might whiten your teeth today only to find them darker next month. Most dentists recommend limiting the use of these heavy-duty pastes to two or three times a week, and only if the staining is severe. Check with your dentist before you start using them.
When to see a professional for cosmetic cleaning
If you stain easily, a professional cosmetic cleaning is a better option than harsh home scrubs. It takes about 20 minutes and costs roughly half as much as a standard cleaning. It removes surface stains effectively.
Do not use it as a substitute for regular checkups. It is an add-on, not a replacement. If your teeth are prone to discoloration, ask your dentist about scheduling these between your routine visits.
DIY remedies to avoid
Do not get creative in the bathroom. Baking soda is a classic home remedy, but it is abrasive. It can scratch composite resins and porcelain veneers. Those materials are used in crowns and other restorations. Once they are scratched, they hold onto stains even worse than smooth enamel.
Dental picks and chlorine bleach applications are also risky. They can damage tooth structure or surrounding soft tissue. The risk-to-reward ratio is bad.
There are safer at-home whitening options available, but they require a different approach than the old-school scrubs.
Which Home Remedies Actually Whiten Teeth?
Pharmacy shelves are crowded with options. You’ve got gels you paint onto each tooth individually. Mouth trays that look like athletic guards but sit in your mouth for a prescribed period, often overnight, for two to four weeks. There are strips, thin flexible plastic bands that stick to the front of your teeth. “Whitening pens” exist too, with sponge tips that deliver the agent directly.
Skeptical at first, dentists have largely warmed up to these do-it-your systems. Many now dispense them to patients. The active ingredient in most over-the-counter kits is 10 percent carbamide peroxide. It works by “bleaching” the tooth. It removes surface discoloration and penetrates deep enough to tackle stains that have built up over years.
How In-Office Bleaching Compares to At-Home Kits
Your dentist can do the same job, but with heavier machinery and stronger chemicals. Office products contain higher concentrations of peroxide than store-bought versions. Studies suggest those higher concentrations brighten teeth more effectively.
Dentists also have lasers and light tools. These reportedly intensify the peroxide’s effect. Speed is the other big difference. At-home remedies take weeks. In-office bleaching is usually done in a single session, roughly an hour long. The trade-off is cost. The dentist’s version is more expensive.
Who Benefits Most from Tooth Whitening?
The American Dental Hygienists’ Association reports that 96 percent of people with stains from age, tobacco, coffee, or tea notice at least some lightening after using whitening agents.
It’s less effective for other causes. Stains from medications like the antibiotic tetracycline don’t respond well. Neither do stains from fluorosis, which results from overexposure to fluoride.
There is a hard limit on what these products can do. They only work on natural tooth structure. If you have caps, crowns, veneers, fillings, or dentures, they will not whiten. Those materials remain the same color. People currently wearing braces should not use dental whiteners at all.
Is Peroxide in Your Mouth Safe?
It can sound extreme. But these products appear to be safe, with few risks. The American Dental Association has placed its ADA Seal of Acceptance on many of them, which helps guide your selection. The association still advises talking to a dentist before trying a bleaching product.
Side effects exist. Bleaching can cause temperature sensitivity in the teeth. People using mouth-tray kits occasionally develop gum irritation. These problems are usually short-lived. There are rare reports of permanent tooth damage from the higher-concentration, dentist-applied whiteners. If you go the at-home route, follow the instructions exactly. Do not apply it more often than recommended. Overexposure can damage tooth enamel.
What About Whitening Toothpaste?
You can find many whitening toothpastes. They may help eliminate surface stains. They cannot alter the tooth’s inherent color. They probably won’t produce dramatic changes.
Beware of pastes that use abrasive ingredients to “scrub away” stains. They may damage your teeth. The best way to whiten your teeth is to prevent the stains in the first place. Dropping a few bad habits and following basic home care routines is the most effective strategy for maintaining a bright smile.
Prevention is cheaper than treatment.
Frequently Asked Questions About Tooth Whitening
- Which whitening method is fastest? In-office bleaching, typically completed in about an hour.
- How long do at-home kits take? Usually two to four weeks of use.
- Do whitening products work on crowns or veneers? No, they only affect natural tooth enamel.
- Is it safe to use whitening strips while wearing braces? No, people who wear braces should not use dental whiteners.
- What causes tooth sensitivity after whitening? The bleaching process can make teeth temporarily sensitive to temperature changes.
