We accept the Canadian Dental Care Plan (CDCP), click here to learn more

We accept the Canadian Dental Care Plan (CDCP), click here to learn more

We accept the Canadian Dental Care Plan (CDCP), click here to learn more


What Causes Green Tooth and Other Tooth Discoloration?

tooth discoloration & green tooth

Have you ever glanced in the mirror and noticed that your teeth aren’t as bright white as they once were? Don’t worry, you’re not alone. Many people experience tooth discoloration at some point in their lives.

But why does it happen? Let’s dive into the world of dental science and explore the tooth discoloration causes, including the mysterious case of the green tooth.

1. Food and Drinks

One of the most common causes of tooth discoloration is the food and drinks we consume. Think about all the colourful foods and drinks you enjoy, like berries, tomato sauce, and soda. These vibrant colours can leave stains on our teeth over time, making them appear less white. So, remember to brush your teeth after enjoying these tasty treats.

2. Poor Oral Hygiene

Not brushing and flossing regularly can also lead to tooth discoloration. When we don’t clean our teeth properly, plaque—a sticky film of bacteria—builds up on our teeth. This plaque can eventually turn into tartar, making our teeth look yellow or brown.

That’s why it’s super important to brush your teeth at least twice a day and floss once a day to keep your smile bright and healthy.

3. Tobacco Use

If you’re someone who smokes or chews tobacco, you might notice that your teeth start to yellow over time. That’s because tobacco contains chemicals that can stain your teeth, creating a need to seek teeth whitening near you. It can also lead to gum disease and other oral health problems. So, if you want to keep your smile sparkling, it’s best to stay away from tobacco products altogether.

4. Age

As we get older, our teeth naturally start to lose their brightness. It is because the outer layer of our teeth, called enamel, wears away over time, revealing the yellowish dentin underneath. While we can’t stop the aging process, we can still take steps to keep our teeth as white as possible by practicing good oral hygiene habits.

5. Medications

Believe it or not, some medications can also cause tooth discoloration. Certain antibiotics, like tetracycline, can stain developing teeth in children. Other medications, such as antihistamines and high blood pressure drugs, can cause discoloration in adults. If you’re concerned that your medication might affect your teeth’ colour, be sure to talk to your dentist about it.

6. Trauma

Sometimes, accidents happen, and our teeth can get injured. If you’ve ever had a fall or a sports injury that damaged your tooth, it might turn a different colour—like grey or black—as a result.

It happens because the blood vessels inside the tooth can become damaged, causing them to change colour. If you ever injure your tooth, see a dentist immediately to prevent further damage.

Now, Let’s Address The Mysterious Case Of The Green Tooth! 

While it might sound like something out of a fairy tale, green tooth discoloration can actually happen in real life. The condition called chromogenic bacteria is one of the possible reasons for a green tooth. These bacteria produce pigments that can stain the surface of our teeth, giving them a greenish hue.

Poor oral hygiene and certain foods can encourage the growth of these bacteria, leading to green discoloration. If you ever notice that one of your teeth has turned green, don’t panic! Just be sure to see your dentist to find out the cause and get the proper treatment.


There are many reasons why our teeth can change colour—from the foods we eat to our oral hygiene habits to age and beyond. By caring for our teeth and visiting the dentist in Red Deer regularly, we can keep our smiles bright and healthy for years.

So, remember to brush, floss, and smile, because a little TLC goes a long way with our teeth! Alpen Dental: Your expert guide to understanding and treating tooth discoloration with precision and care. Trust us for a brighter, healthier smile.