How to prevent tooth decay is often the first question we ask ourselves when we start to feel that our own teeth have problems. It could start from the color of the teeth, changing from teeth that look white, to yellow stains, or having sensitive teeth when eating or even unbearable pain. Therefore, we have compiled a complete list of questions about tooth decay and what we can do to prevent it.
Tooth decay, is a contagious saliva disease caused by bacteria and food particles that we eat, trapped in the teeth's corners. It piles up to become a good food for bad bacteria and forms plaque in the mouth, especially from foods that are primarily high in sugar. When plaque clings on to food waste that are already attached to the tooth surface, it gradually releases acid that destroys the tooth surface, leading to tooth decay. It turns brown and becomes a deeper hole. If you brush your teeth incorrectly or not able to clean thoroughly enough, it will be seen as a yellow stain on the teeth. Furthermore, these plaque build-up will harden and eventually turn into limestone.
We can check for tooth decay by ourselves. It can be observed by our eyes and the way the sensations that have changed. The characteristics of teeth that begin to decay are as follows:

The teeth are not shiny, there are white spots on the side of the teeth. On the inside, there will be black-brown marks along the holes and grooves of the teeth. Yellow stains on teeth and bad breath. No tooth sensitivity or toothache yet.
Teeth begin to decay deep into the dentin layer. At this stage, teeth become sensitive when eating spicy food and cold water.
This is the stage that causes suffering for everyone. Because the teeth will decay deep into the nerve cavity, they will feel pain and sensitivity all the time until they can't eat and can't sleep at all.
The later stage of toothache is the most painful because at this stage it will begin to inflame towards the gums. Roots and cavities of teeth may develop pus along with chance of loss of teeth.
Main factors of tooth decay comes from food + bacteria + oral acid. Therefore, it is necessary to reduce the amount of these 3 things effectively. Ways to prevent tooth decay are as follows:
Brush your teeth at least twice a day, morning and before bedtime.
Use toothpaste and mouthwash that helps in removing food particles, reducing bacteria, plaque, and contains fluoride that helps prevent tooth decay.
It is recommended to use dental floss to scrub between teeth to remove stubborn food particles.
Be wary of what you consume. Consume less spicy, sugary and starchy food. After meals, it is recommended to rinse your mouth with clean water to wash away food particles and balance the acid-base balance in the mouth.
See a dentist every 6 months to check on your oral health.
Choosing the right toothpaste for cleaning and oral care is one of the easiest ways to prevent tooth decay and can be done every day. A good toothpaste that can help prevent tooth decay should have the following properties:

Anti-cavity toothpaste must contain extracts that help clean food particles deeply. It helps to reduce the number of bacteria and plaque formation.
Anti-cavity toothpaste must contain fluoride. That helps in cleaning and helping to eliminate yellow stains on the teeth. Makes teeth whiter and cleaner.
Anti-cavity toothpaste must contain extracts that reduce bad breath. Bad breath is another warning sign of tooth decay, indicating that we are not cleaning well enough. So be sure to choose a toothpaste that eliminates the smell. It will help with cleanliness and enhance confidence in having a good breath too.
Anti-cavity toothpaste must contain fluoride. Which is a tooth enamel that helps strengthen teeth's surface, reducing erosion from acid in the mouth. Thus helping to prevent tooth decay as well
Eating and not cleaning up is like making our mouth like a trash can with rotten food. An unpleasant odor will emit. Plus, those food scraps are great food for plaque-forming bacteria, which is like a film, colorless, plaque uses electric charge to adhere to the enamel on the tooth surface and releasing acids to destroy the tooth surface, causing tooth decay. Getting rid of bad breath and plaque is not difficult. Just clean your gums and teeth with toothpaste regularly and flossing will help clean food particles and plaque that tend to be in areas that are within reach of your toothbrush, such as between your teeth. Usage of mouthwash that contains natural extracts helps to reduce bad breath. All this steps will help manage both bad breath and plaque.
Mouthwash is another item that many people tend to overlook. It is an essential item that can help prevent tooth decay. Because mouthwash can penetrate and clean between the teeth as well and has the ability to help reduce the accumulation of bacteria which is one of the causes of bad breath and tooth decay.

i-fresh oral and dental care products are designed for superior care. with invaluable extracts and state-of-the-art technology. i-fresh toothpaste and mouthwash are essential for preventing for tooth decay. It helps reduce bad breath and take care of oral health effectively.
Patented in Japan. Take care of cleaning deeply with negative ion water that can penetrate to clean by leaving plaque "negatively charged”, which allows food particles and plaque to easily come off the tooth surface, without damaging the tooth enamel.
Raw apples extract help prevent plaque formation. Helps reduce bad breath and tartar. In addition, zinc mineral inhibits bacteria that causes bad breath. Inclusive of fluoride that helps prevent tooth decay effectively.
Special abrasives with small particles. Helps to clean deeply and more efficiently without damaging the tooth enamel.
Gets rid of bad breath problems, add a special cool and refreshing fragrance, created directly from England.
Although many people think that oral and dental problems seem like a small matter. But when toothache problem arises, it will be difficult to live with it. Therefore, we recommend taking care of your teeth by preventing tooth decay, together with regular visits to the dentist. Enjoy life and show a smile. Show your white and clean teeth with confidence!
Reference: dt.mahidol.ac.th, ldcdental.com, thaihealth.or.th