Learning a little bit about natural teeth whitening is a good way to reduce the amount of chemicals you could potentially ingest as well as protect the enamel from overly abrasive substances that can weaken the tooth and encourage decay. By maintaining a regular natural oral health routine you'll also be able to freshen your breath and improve the overall health of your mouth, reducing the need for future dental surgery. 

Coconut Oil

Oil pulling is an old technique developed in India that is gaining popularity. It consists of swishing coconut or sesame oil around the mouth for five to twenty minutes, drawing it through the teeth and treating it like a mouthwash. It is not an alternative to brushing, but rather a natural supplement to it that is aimed at killing off bacteria and microbes that cause bad breath, staining and gum disease. The reason coconut oil in particular works so well is because it has anti-bacterial, anti-microbial and anti-fungal properties. So by killing the bacteria in the mouth, you can prevent yellowing of the teeth, especially in the crevices by the gums, which so easily get stained, often by the minerals found in tea and coffee.

Coconut oil also makes good natural toothpaste if combined with bicarbonate of soda. Whilst the oil continues to work in the same fashion as it does when oil pulling, the bicarbonate of soda provides gentle exfoliation that helps to lift strains from the enamel as well as neutralise acid in the mouth. Just use it like regular toothpaste and store in an airtight jar in the bathroom. There are no exact quantities needed when making it, just add enough bicarbonate of soda until you have a paste that is easy to apply with a toothbrush. If you have kids or you want some flavouring, try adding a few drops of essential oil such as lemon, peppermint or orange, which have further anti-bacterial properties. Just be careful not to use tea tree oil, as this is harmful when ingested. 

Seeds

You can also give your teeth some exfoliating treatment by chewing on seeds with a hard outer shell. Sunflower seeds are perfect and work well to lift stains without damaging your teeth. Just be sure not to swallow them after you have finished, as the shells are insoluble. Other seeds may also help, such as pumpkin and sesame seeds, but you can eat these afterwards, receiving the benefit of both good nutrition and natural teeth cleaning.