Dentist reveals common mistake people make that causes yellow teeth and how to avoid it

A dentist has answered the question that most people ask themselves: how do we keep our teeth looking nice and white?

With almost all celebrities having had some form of cosmetic dentistry, it'll come as surprise that we also want picture perfect teeth.

According to Atrium Dental, evidence has suggested that around 90 percent of celebrities have made changes to their smiles.

For example, some people who are said to have had porcelain veneers include Tom Cruise, Zac Efron, Demi Moore, and Victoria Beckham.

But there are things we can do avoid to damaging our teeth and keeping them white, without having to book the next flight to Turkey.

Dr. Shaadi Manouchehri, who goes by @dr.shaadi.manouchehri on social media, revealed the things you should avoid doing to keep your pearly whites healthy.

If you're the type person of person to reach for a cup of coffee before leaving for work in the morning, make sure you don't brush your teeth immediately after consuming it.

"Never brush your teeth after you've just had coffee," said Dr. Shaadi.

"Coffee is quite acidic... if you go and brush your teeth straightaway, you're rubbing the acid onto the tooth and wearing the tooth away.

"Wait at least 30 to 60 minutes - you don't actually have to brush your teeth, just rinse with some mouthwash or drink water."

The acidity in drinks like coffee can be spread further round your mouth if you brush your teeth right after drinking it. Meanwhile, these types of beverages weaken your enamel as well.

Similarly, you shouldn't brush your teeth after vomiting, as the contents of your stomach are extremely acidic.

"When the contents of the stomach have come into the mouth, then the mouth is very acidic," said the dentist.

"And if you brush straight away, you're rubbing the acid onto the tooth even more. So, wait at least 30 to 60 minutes before you brush your teeth."

Dr. Shaadi also urged people to not brush their teeth straight after breakfast. Instead, we should be brushing out teeth beforehand.

Explaining why, the dentist said: "When you first wake up in the morning you have quite a lot of bacteria in the mouth and that needs to be brushed off before you have your breakfast."

If you avoid these things, in the long run you'll find that your teeth stay whiter for longer - without having to reach for the teeth whitening strips.