If the reason behind your yellow teeth is food stains or plaque buildup, you're in luck. You can address teeth discoloration simply by brushing and maintaining proper dental hygiene. However, if your teeth have already turned yellow, it indicates that the white enamel has worn down slightly, revealing the dentin underneath. This is a natural occurrence as we age. It doesn’t mean you’ve done anything wrong, but it’s understandable if you desire a brighter smile. While technically, we can’t regenerate enamel once it’s worn, you can protect the remaining enamel and remineralize it to enhance the whiteness of your teeth.
Steps
Dental Care

Brush your teeth for at least 2 minutes, twice a day. Brush once in the morning after waking up and once at night before bed. Use a small amount of toothpaste and gently brush in circular motions or vertically. Spend 2 minutes each time and avoid brushing too hard. This is the best way to protect your enamel while keeping your teeth clean and healthy.
- Brush your tongue a few times or use a tongue scraper to clean it after brushing.
- You can use a regular toothbrush, but an electric toothbrush makes it easier to brush correctly. While it doesn’t clean better than a manual brush, it eliminates the need to focus on proper brushing techniques.
- Brushing more than twice a day can actually wear down your enamel. Your teeth won’t be cleaner if you brush too hard or too frequently.

Use fluoride toothpaste to maintain enamel health. There’s no better alternative than fluoride toothpaste. Fluoride naturally strengthens enamel and helps remove stains, which is essential if you want a bright, white smile. While some naturalists worry about fluoride’s effects on the body, there’s no evidence that fluoride toothpaste is harmful when used as directed.
- Although you technically can’t restore enamel, fluoride can strengthen weakened enamel, making teeth appear whiter.
- If you have sensitive teeth, opt for fluoride toothpaste specifically designed for sensitivity.
- The flavor, texture, and type of toothpaste are entirely up to personal preference. None of these factors affect cleaning ability, as long as your toothpaste contains fluoride.
- There’s little evidence that “whitening” toothpastes are particularly effective. You can use them if you like, but don’t be disappointed if the results aren’t as dramatic as expected.

Floss once a day to clean between your teeth. Pull out about 12-18 inches of floss. Wrap it around one tooth and gently slide it up and down. Repeat this for 20-30 seconds on each tooth. Floss at least once daily to prevent food and plaque buildup between teeth, as debris and plaque can erode enamel.
- Many people think flossing is optional, but it’s not. Flossing is essential for protecting teeth and maintaining a bright smile!
- If your gums bleed when flossing, they might be inflamed. This is a form of gum disease, but it can resolve with regular flossing and brushing. If bleeding persists, consult your dentist for a checkup.

Rinse with mouthwash before and after brushing. Use mouthwash twice during your brushing routine. Swish a capful of mouthwash before brushing to loosen food particles. Rinse again after brushing to wash away toothpaste and freshen your breath.
- There are two types of mouthwash: cosmetic and therapeutic. Cosmetic mouthwash contains hydrogen peroxide for whitening, though its effectiveness is debated. Therapeutic mouthwash is formulated to combat bad breath. Both are beneficial.
- Mouthwash promotes oral health and cleanliness but can’t replace brushing or flossing.
- Mouthwash is especially helpful if you often experience dry mouth during the day.
Teeth Whitening

Purchase whitening strips for at-home teeth whitening. While they won’t solve the problem overnight, whitening strips can effectively remove yellow stains. Choose strips that are 1-2 shades whiter than your teeth for noticeable results without visiting a dentist. Note that whitening strips shouldn’t be used on dental restorations, as they can damage the materials.
- Whitening strips don’t work on restored teeth, so crowns or implants may stand out more after use.
- Dental professionals generally agree on whitening strips; Crest whitening strips are often recommended as a safe and effective option.

Apply whitening strips for 5-45 minutes. Brush your teeth before using the whitening strips. Peel off the adhesive backing of the first strip and align it with your gum line. Press the strip onto your teeth and fold the excess around the back. Repeat the process for the second strip on your lower teeth. Follow the product’s instructions regarding how long to leave the strips on.
- Depending on the brand and type, you may need to leave the strips on for 5 to 45 minutes.
- Some whitening strip brands require daily application for up to a week.

Avoid certain DIY whitening remedies using household ingredients. When searching for teeth whitening methods, you might come across suggestions like baking soda, hydrogen peroxide, lemon juice, turmeric, or coconut oil. While some of these may whiten teeth, they can also harm your gums or erode enamel. Always consult your dentist before trying these tips.
- Any method involving citrus fruits can erode natural enamel over time, weakening your teeth. Strawberries are another popular whitening remedy, but they aren’t particularly effective.
- Hydrogen peroxide can irritate gums and damage tooth roots. Dentists do use hydrogen peroxide in whitening treatments, but the formulas and concentrations are carefully controlled and not replicable at home.
- Turmeric is likely harmless but lacks strong evidence for whitening effectiveness.
- There’s no proof that coconut oil whitens teeth.
Preventing Teeth Stains

Use a straw for all beverages to protect your natural enamel. Yes, even for hot coffee or tea! It might sound silly, but this is an effective way to shield and keep your teeth clean. Using a straw prevents liquids from coating your teeth, which helps preserve enamel.
- Water is an exception. It contains trace amounts of fluoride, which is beneficial for teeth.

Limit coffee, red wine, and citrus to prevent staining. Anything that stains a carpet can stain your teeth, so try to cut back on coffee and red wine. High-citrus foods and drinks can erode enamel if consumed excessively. Opt for iced water instead of lemonade the next time you need to cool off on a hot summer day.
- Dilute coffee with cream or milk to reduce staining risks. Choose rosé or white wine over red for similar reasons.
- Soy sauce, curry, and tomato sauce can also cause yellowing. Enjoy them in moderation, but rinse your mouth after consuming dishes with these ingredients.

Chew sugar-free gum for 20 minutes after each meal. Sugar-free gum stimulates saliva production, which helps wash away food particles stuck in your teeth. Even 20 minutes after eating, food debris often remains trapped. Chewing sugar-free gum for a few minutes can clean your mouth and protect your teeth from damage caused by leftover food particles.
- If you use sugary gum, the sugar can erode enamel and expose the yellowish dentin underneath.

Quit smoking if you have a tobacco habit. Over time, tobacco stains teeth, turning them yellow or brown with prolonged use. Smoking also significantly increases the risk of lung and oral cancer, so consult your doctor for advice on
quitting smoking if you’re a regular smoker.
- There are prescription medications, nicotine patches, nicotine gum, and other options. Quitting is challenging, but it’s worth it if you want to restore a bright smile!
Dental Checkups

Visit the dentist every 6 months for routine cleanings. Maintain a regular dental schedule and see your dentist at least twice a year for cleanings and checkups. Nothing can replace professional dental cleaning. Additionally, your dentist can detect potential issues early before they become serious.
- During a cleaning, your dentist or hygienist will remove plaque, tartar, and food debris. They’ll then polish your teeth and remove stains. The process is painless and irreplaceable, so don’t skip your dental appointments!

Ask your dentist about teeth whitening options. During your next dental visit, inquire about professional whitening treatments. Depending on your teeth’s condition, your dentist may use a hydrogen peroxide mixture or other whitening agents to remove deep stains and brighten your smile. They might also provide custom-fitted trays and prescribe whitening gel for at-home use. After a few treatments, your teeth could lighten by several shades.
- Professional whitening is always more effective than at-home strips, as your dentist can monitor and tailor the treatment to your teeth.
- Unfortunately, dental insurance rarely covers whitening costs, as it’s considered a cosmetic procedure.

Purchase a night guard if you grind your teeth while sleeping. If your enamel is wearing down due to nighttime teeth grinding, consult your dentist about a custom night guard. They’ll take an impression of your teeth and create a guard for you to wear while sleeping, protecting your teeth from further damage.
- Initially, wearing a night guard might feel strange, but be patient! You’ll get used to it after a few nights.

Schedule a dental appointment for porcelain veneers if you want a permanent whitening solution. Ask your dentist if porcelain veneers are a suitable option for you. This is the most effective way to address yellow teeth and restore a radiant smile, though it can be costly. To apply veneers, your dentist will take an impression of your teeth and create custom porcelain shells to cover the front surface of your teeth. These are then bonded to your enamel, providing a permanent, bright white appearance.
- The cost of veneers ranges from 6 to 12 million VND per tooth, depending on the materials used and the dentist’s expertise.
Tips
- Except for whitening strips, other teeth-whitening products are not strictly regulated. If you see something in a pharmacy claiming to whiten teeth, don’t assume it’s effective without proper research.