1. Green Tea
Green tea is a type of tea processed to retain its freshest taste. After picking, the fresh tea leaves undergo an immediate 'kill-green' process, where they are pan-fried or steamed at high temperatures. This process eliminates enzymes in the leaves. The Fluoride content in green tea is essential for dental health. Drinking 2 - 3 cups of green tea daily helps enhance tooth enamel, preventing harmful bacteria and effectively fighting tooth decay. While green tea is excellent for teeth whitening, remember not to overconsume, as it may harm tooth enamel. Stick to 2 - 3 cups of green tea per day.
Green tea has the ability to alleviate symptoms of oral diseases due to the presence of the antioxidant catechin. Previous studies have shown the antioxidant's potential in reducing inflammation in the body and addressing oral health indicators, such as PD, CAL, BOP, suggesting a positive response to bacterial challenges in the mouth.

2. Orange, Tangerine, Grapefruit
Eating oranges, tangerines, and grapefruits increases saliva flow and enzymes, effectively protecting tooth enamel. Oranges are juicy fruits with segments. However, the vitamin C in oranges enhances connective tissue and blood vessels, slowing the progression of gum disease by reducing inflammation. Remember to wait at least 30 minutes after eating citrus fruits before brushing your teeth.
Moreover, the abundant water content and antioxidants in these fruits will cleanse lingering bacteria in the mouth, eliminate free radicals to prevent tooth decay and bad breath. Chewing fiber-rich fruits massages the gums, stimulating saliva to clean the teeth. Additionally, the two acids in oranges, tangerines, and grapefruits - citric acid and malic acid - are neutralized by saliva, reducing mouth acidity.
Fruits belonging to the citrus family, such as oranges, tangerines, lemons, and grapefruits, are essential for our health due to their high vitamin C content. A deficiency in vitamin C can result in poor health, easy bleeding, and weakened teeth. Ensure your family meals always include cucumbers and tomatoes, which are also rich in vitamin C.

3. Carrot
Vitamin A in carrots is not only good for eyesight but is also crucial for oral health. Vitamin A promotes even tooth growth, convenient development, and constant brightness. Moreover, Vitamin A in carrots also accelerates quick healing when injured, addressing bleeding gums or bleeding tooth sockets.
Consuming one carrot daily is sufficient to maintain strong teeth. Avoid overeating or misuse, as it may lead to yellowing of the palms and soles.
Carrots are beneficial for your teeth and mouth; they help remove plaque and food on teeth like a 'formidable' toothbrush. Carrots stimulate gum tissue and create favorable conditions for the natural formation of alkaline saliva, balancing acid and bacteria formation in the oral cavity. The minerals in carrots eliminate harmful bacteria in the mouth and prevent tooth decay. Carrots also have excellent teeth-whitening properties.

4. Celery
In celery, there are many antioxidants that ensure a balance of bacteria and other microorganisms in the mouth, thereby maintaining the stable and healthy state of the teeth.
Moreover, eating celery helps blur stains, making teeth noticeably whiter, and the mouth always clean and fresh. Celery deserves special attention as it is excellent for your teeth. It is the perfect food for oral health and the closest natural product to replace dental care.
Among fruits beneficial for dental health, celery is a tough and fiber-rich vegetable. It is excellent for stimulating the gums, maintaining gum health, ensuring strong and firm teeth. Providing an abundance of beta-carotene for the body, celery helps the body produce vitamin A, considered a nutrient that determines and structures oral health.

5. Water
Always considered a elixir for the body, water cannot be overlooked in this list. Remember to prioritize pure filtered water. Optimal water levels in your saliva are crucial for breaking down food, preventing cavities, and neutralizing acid produced by bacteria.
Although drinking water after meals is not as effective as dental floss and toothbrushing, it can still help reduce plaque by flushing away food particles. Rinsing your mouth with water after consuming colored foods, coffee, etc.
Mineral water contains many minerals, including calcium phosphate compounds that help regenerate tooth enamel. Supplementing 2 - 2.5 liters of water daily helps cleanse the body, wash away bacteria clinging to the teeth, and prevent issues like teeth discoloration, yellowing, or cavities. Fruit juice is also a smart choice to keep your teeth strong and healthy every day.

6. Organic Avocado
Avocado is rich in calcium, helping prevent cavities. Many people think that eating avocados is not good as it may cause obesity, but this is completely misleading. Organic avocados are excellent for teeth as they are rich in calcium, aiding in cavity prevention.
Many people opt for low-fat avocados, thinking they are healthier. However, consuming regular avocados in moderation not only avoids weight gain but also protects your teeth.
Organic avocados contain a high amount of calcium, providing an excellent source for your teeth and gums, regenerating tooth enamel to resist the dreaded cavity-causing bacteria. However, if you're concerned about gaining weight from consuming avocados, you don't need to worry anymore.

7. Milk
The root cause of cavities is a type of bacteria living in the mouth that metabolizes sugar and carbohydrates into energy to survive. This breakdown process produces acid that erodes tooth enamel, leading to cavities. Saliva plays a role in cleaning plaque and neutralizing acid. Therefore, to enhance oral health, you should supplement foods with strong acid-neutralizing abilities, providing minerals and vitamins to strengthen tooth enamel and stimulate saliva gland activity.
Milk is naturally rich in calcium, a crucial compound for tooth strength. Additionally, consuming milk helps combat gum disease and inflammation, the leading causes of tooth decay, stimulating the remineralization process to keep teeth strong and bright.
Milk is a calcium, phosphate, and vitamin D-rich food - essential compounds for bones and teeth. Specifically, calcium and phosphate protect tooth enamel, playing a vital role in the regeneration and bonding of tooth enamel. If allergic to milk, you can substitute with pure soy milk to ensure an adequate calcium supply for the body.

8. Whole Grain Cereals
Cereals are divided into 2 groups: whole grain cereals (raw cereals, whole grain cereals) and refined cereals. Whole grain refers to cereals that retain the bran, germ, and endosperm after grinding, maintaining the bran layer, germ, and the main part of the grain called the endosperm.
Whole grain cereals include the following types:
- Whole grain group: Whole corn, whole black oats, wild rice, millet, wheat, whole grain bread, oats...
- Supplementary cereal group includes barley, quinoa, sorghum, chia seeds...
- Faux cereals include whole wheat flour, brown rice, wild rice, barley, rye...
- Other grains such as soybeans, green beans, black beans, red beans, black sesame seeds.
Vitamin B and iron in whole grain cereals contribute to maintaining healthy gums. Build a nutritional plan with 3 servings of whole grain cereals a day to reduce the risk of periodontitis - a severe form of gum disease that is difficult to treat and causes significant pain.

9. Fish and Seafood
Having bright white teeth for a charming and confident smile is something everyone wishes for. However, it's not just about brushing your teeth; it also depends on the natural enamel of your teeth.
Rich in nutrients, fish and various seafood contain plenty of calcium and vitamin D to support strong teeth development, protect the natural enamel, and effectively prevent tooth decay. Additionally, vitamins B2 and B12 help reduce the risk of mouth ulcers.
Healthy fats like omega-3, beneficial for dental health as well as overall well-being, can be obtained through seafood such as salmon, sardines, tuna, walnuts, and olive oil.

10. Some Types of Seeds
Sunflower seeds, sesame seeds, pumpkin seeds are calcium-rich, mineral-packed, and vitamin-enriched seeds that you should regularly incorporate if you want strong teeth from within. These seeds keep you away from the risk of gum inflammation and tooth decay.
Various legumes and seeds such as pumpkin seeds, cashews, and sunflower seeds contain abundant calcium, vitamins, zinc, iron, phosphorus, and minerals. These nutrients play a crucial role in maintaining dental and gum health. Those who regularly supplement around 800mg of calcium per day in their diet are less likely to suffer from oral health issues.
Additionally, seeds contribute to dental hygiene with their high fiber content, promoting saliva production and cleaning away plaque.

11. Eggs
Chicken eggs are a familiar and nutritious dish in every family meal. With just one chicken egg, we can prepare a variety of delicious dishes. According to the nutrition table of the National Nutrition Center of Vietnam, one chicken egg contains 68 calories, including 5.2g of protein, 4.1g of fat, and 0.2g of carbs (starch and sugar). This is considered the perfect figure for everyone to incorporate into their daily diet.
The protein and phosphorus content in eggs are reliable companions for oral health. They help replenish cells and promote blood circulation to the nerve fibers at the tooth roots.
Moreover, these two substances ensure the stability of pH in the mouth, protecting tooth enamel and inhibiting the growth of bacteria that produce acid.

12. Leafy Greens (Spinach, Kale, Curly Kale)
Leafy greens are rich in calcium, folic acid, and various essential minerals and vitamins beneficial for overall health and oral health.
Leafy greens are excellent for both general health and oral health. Choose green vegetables high in vitamin A, such as pumpkin, carrots, and kale, as they are crucial for the formation of tooth enamel. Leafy greens are an indispensable part of the daily diet.
They contain a variety of vitamins and essential nutrients for human health. Consuming plenty of leafy greens can help stabilize blood pressure, prevent cardiovascular diseases, and support the metabolic process.

13. Cheese
Do you enjoy Cheddar cheese? This type is rich in calcium. Additionally, cheese helps reduce acidity in the mouth, combating plaque. Cheese contains a significant amount of calcium, not only beneficial for bones but also excellent for oral health. Consuming cheese can supplement minerals lost by the teeth, promoting stronger teeth and effective cavity prevention.
Cheese is one of the dairy products that is highly beneficial for teeth, stimulating saliva production. Moreover, the calcium and phosphate in cheese help neutralize acidity, making the tooth surface stronger.
Furthermore, chewing hard cheese stimulates increased saliva production, rinsing away some bacteria in the mouth. If you still want to indulge in not-so-tooth-friendly snacks like cookies, adding a bit of Cheddar cheese can help minimize the damage. The best choice is to opt for aged, hard cheese.

14. Strawberries
If you aspire to have perfect teeth, it's best to cherish strawberries! They are rich in Vitamin C, antioxidants, and malic acid, a substance that can naturally whiten teeth.
Strawberries contain malic acid, which helps remove stains on teeth, resulting in a bright white smile. You can create a toothpaste mixture using strawberries with the following recipe: mash a small amount of strawberries and mix with baking soda, then use this mixture to brush your teeth and rinse your mouth with clean water. Use this mixture only twice a week to avoid enamel erosion.
First and foremost, cleaning your teeth with strawberries is quite effective, and you can easily do it at home. The efficacy of this teeth-whitening method is attributed to the presence of an enzyme called malic acid and vitamin C in strawberries. This has been scientifically validated through specific research studies.

15. Fresh Blueberries
Rich in polyphenols (similar to tea), combating plaque, thus reducing the risk of cavities. Fresh blueberries are particularly effective in disrupting the formation of plaque.
Enhance the 'quality' of your smile. The PACS compound in blueberries has anti-inflammatory properties, preventing the formation of bacteria and factors causing gum disease in the mouth, promoting healthy gums and teeth.
Thanks to this effect, blueberries are believed to prevent bacteria from adhering to the teeth, helping to prevent cavities.

16. Garlic
Allicin in garlic has strong antibacterial properties. Therefore, garlic helps you fight cavities and especially gum disease. Research shows that garlic is a substance containing a variety of antibiotics, capable of preventing many types of bacteria.
In addition, garlic also contains many antibacterial and disinfectant compounds such as phytoncides, glucogen... So, simply applying garlic directly to the affected area can significantly reduce pain caused by cavities.
For best results, you should maintain the time of applying garlic to the affected area for about 10 - 15 minutes. Apply continuously in the first day with a frequency of about every 3 hours to achieve optimal results. Ideally, apply garlic before bedtime to minimize the odor caused by garlic in the mouth.

17. Apple
Does eating an apple every day keep you from visiting the dentist? Perhaps not, but apples are undoubtedly beneficial. Apples contain essential nutrients and key vitamins. Apples have a high water content, reducing the negative effects of sugar and promoting saliva production. Therefore, it helps protect teeth from bacterial attacks.
Westerners have a saying, 'An apple a day keeps the doctor away,' meaning that eating an apple every day prevents you from seeing a doctor. This stems from the health benefits it brings, such as reducing cholesterol levels, reducing the risk of respiratory diseases, promoting a healthy heart, smoothing the lungs, reducing mucus, and enhancing body fluids...
And, of course, eating apples is scientifically proven to be good for teeth. Apples contain a lot of vitamin C (even higher than oranges and lemons), in addition to natural acids and high fiber, all of which are beneficial for teeth, specifically:
- Strengthens teeth
- Reinforces tooth enamel, minimizing enamel erosion
- Improves tooth color in cases of mild yellowing
- Apples are a crunchy food, so chewing apples can effectively remove tough plaque.
- The high water content in apples helps counteract the negative effects of sugar, increases saliva production, and effectively fights cavities.

18. Onion
When consumed raw, onions have strong antibacterial properties, especially against bacteria that cause tooth decay and gum inflammation. To relieve toothache, use crushed onion applied to the painful area, which is very effective. For treating sore throat: Drink onion juice mixed with apple cider vinegar for good results.
The allium compounds in onions are excellent for teeth. They are colorless, so they do not cause plaque on the tooth surface. The effects of consuming onions are similar to brushing your teeth every day, keeping your teeth clean and shining.
In addition, the volatile compounds in onions have a strong antibacterial effect, preventing the attack of bacteria that cause tooth decay.

19. Ginger
Ginger has many fantastic benefits. For oral health, ginger helps freshen breath and limits the growth of bacteria. Ginger contains pain-relieving and anti-inflammatory properties, making it highly effective, especially for toothache.
Clean a ginger root, peel it, and then crush it. Bite down on the ginger against the painful tooth for about 15-20 minutes to release the ginger's essence. When the ginger essence is depleted, and you no longer feel the heat, switch to another ginger root and repeat the process.
Repeat several times until you feel relief from the toothache. Treating toothache with ginger in this simple way is surprisingly effective. Give it a try, especially for toothaches caused by cavities.

20. Shiitake Mushroom
Delicious mushrooms originating from Asia are the nightmare of plaque. They contain lentinan, a natural sugar that combats the formation of plaque on your teeth.
Shiitake mushrooms contain lentinan, a natural sugar that can help prevent gum inflammation. Gum inflammation is a condition where the gums are red, swollen, and may even bleed, often caused by an accumulation of bacteria in dental plaque.
Recent studies have shown that antibacterial compounds like lentinan target and destroy these bacteria. In fact, it's accurate to say that they eliminate bacteria causing tooth decay while leaving beneficial bacteria completely unaffected.

21. Raisins
Surprisingly, raisins were once considered to have adverse effects on your teeth. However, raisins contain bioactive compounds like oleanolic, which can eliminate bacteria causing tooth decay.
They are also rich in antioxidants. Raisins play a role in maintaining strong teeth, preventing toothaches, and effectively preventing cavities due to the presence of oleanolic acid.
Moreover, eating raisins helps prevent gum disease and limits the growth of bacteria causing bad breath.

22. Baking Soda
Currently, there are numerous methods for whitening teeth at home that you can apply to achieve bright white teeth. Among them, whitening teeth with baking soda is a method shared and practiced by most people. Baking soda mainly contains sodium bicarbonate (NAHCO3), which is white, absorbs moisture well, and easily dissolves in water. Additionally, baking soda is also known as 'salt medicine,' 'expansive salt'... when exposed to heat or a slightly acidic environment, it releases CO2 gas, often causing foaming.
Baking soda with alkaline properties helps keep your breath fresh and effectively whitens teeth. Baking soda has many functions in oral care, such as teeth whitening, cleaning, and preventing bacteria causing cavities and tooth decay. However, teeth whitening with baking soda has many pros and cons to consider.
Yellow, discolored teeth will become white, shiny, with no plaque or high ridges, enhancing the aesthetic appeal of your teeth. This is an easy-to-implement method, with quick and simple procedures, taking up little time. Baking soda is relatively cheap and commonly available in daily life, making it easy to purchase and use daily.

