1. Start Oil pulling.

Oil pulling is a conventional treatment that has its roots in India and is intended to enhance oral hygiene and detoxify the body. In order to get rid of bacteria that can form plaque and give your teeth a yellow appearance, the procedure entails swishing oil around in your mouth. Because of its pleasant flavour and numerous health advantages, coconut oil is a popular option. Lauric acid, which is known for its capacity to lessen inflammation and destroy bacteria, is also present in large quantities in coconut oil. Daily oil pulling lowers oral bacteria, plaque, and gingivitis, according to a few studies. One of the main types of bacteria in the mouth that create plaque and gingivitis is streptococcus mutans.

One of the main types of bacteria in the mouth that create plaque and gingivitis is streptococcus mutans. According to one study, daily mouthwashing with coconut oil was equally effective at reducing Streptococcus mutans after two weeks as an antibiotic mouthwash. Unfortunately, there are no studies in the scientific community that show oil pulling can whiten teeth. It is safe to do so, though, so it might be worth a go. Many people assert that regular oil pulling makes their teeth whiter and brighter.

Oil pulling involves pushing and pulling one tablespoon (15 ml) of coconut oil between your teeth. You might need to wait a few seconds for the coconut oil to melt because it is solid at room temperature. Continually pull oil for 15-20 minutes.

2. Use baking soda on the brush

Because it naturally whitens teeth, baking soda is a common component in commercial toothpaste. It is a gentle abrasive that might assist in cleaning teeth of surface stains. Baking soda also produces an alkaline environment in your mouth that inhibits the growth of bacteria. Your teeth won't become whiter over night with this treatment, but over time you should see a difference in how they look.

While it hasn't been scientifically established, brushing your teeth with simple baking soda can perhaps whiten them, according to a number of studies, while toothpaste containing baking soda can really enhance dental health. According to one study, toothpastes containing baking soda considerably outperformed conventional toothpaste in terms of reducing plaque, gum irritation, and bleeding.

Another study found that toothpastes with baking soda may be superior to other toothpastes in their ability to remove stains and whiten teeth.Use the resulting paste to brush your teeth after combining 1 teaspoon (6 grammes) of baking soda with 2 teaspoons of water (5 ml). This can be done a couple times per week.

3. Utilize hydrogen peroxide 

A natural whitening treatment that also destroys oral germs is hydrogen peroxide. Hydrogen peroxide is a common ingredient in commercial whitening solutions, albeit in considerably higher concentrations than you would find at home. Unfortunately, no studies have examined the effects of brushing or rinsing with hydrogen peroxide alone; nevertheless, many studies have examined peroxide-containing commercial toothpastes.

According to one study, toothpaste with a higher concentration of hydrogen peroxide was superior to toothpaste with a lower concentration for whitening teeth after 12 weeks. Another study discovered that toothpaste containing hydrogen peroxide reduced coffee-related tooth discolouration more effectively than toothpastes containing charcoal or abrasives.

However, there are some concerns about hydrogen peroxide's safety.

Although very diluted amounts seem safe, high concentrations or excessive use might irritate the gums and cause dental sensitivity. Although this has not been confirmed, there is also fear that large amounts may cause cancer. Before brushing your teeth, you can use hydrogen peroxide as a mouthwash. To prevent adverse effects, make sure you're using a 1.5 percent or 3 percent solution. In drugstores, a 3 percent solution of hydrogen peroxide is the most popular concentration. By combining peroxide and water in equal amounts, this concentration can be easily diluted to 1.5 percent. 

Making toothpaste by combining hydrogen peroxide and baking soda is another application for the substance. Brush your teeth with a solution made of 2 teaspoons (10 ml) hydrogen peroxide and 1 teaspoon (6 grammes) baking soda. Use this homemade paste only a few times a week; otherwise, it could erode the enamel on your teeth.

4. Consume Fresh fruits and vegetables

Pineapples are said by some to whiten teeth. According to one study, a gel created with the enzyme bromelain, which is found in pineapples, may be more effective at removing stains from teeth than a control group. There is no proof, though, that consuming pineapples has the same result. The body and teeth may benefit from a diet rich in fruits and vegetables.

While they can't replace brushing, crisp, fresh fruits and veggies can aid in removing plaque while you eat. Strawberries may help exfoliate your teeth, which may make them look whiter, but they won't get rid of the stains on your teeth.

In comparison to conventional teeth-whitening treatments, a 2015 study indicated that a strawberry and baking soda mixture generated relatively little colour change in teeth. Limit your use of this technique to a few times each week if you decide to give it a try. Even while research indicated that a strawberry and baking soda paste had no impact on dental enamel, repeated use could be harmful. To use this cure, crush a fresh strawberry, add baking soda, and then clean your teeth with the concoction.