You must keep your teeth clean. 
You can keep your mouth healthy. 

Brushing is very important. You should brush at least twice a day. It is good to brush after breakfast. You should also brush before bed. This helps stop tooth decay.
Do not forget the spaces between teeth. A toothbrush cannot reach everywhere. It only cleans about half of the film. You can use string to clean those spots.
People have cleaned teeth for a long time. Long ago, people used twigs or bones. Some used bird feathers too. Today, we use soft brushes.
Keeping your mouth clean is a great habit. It helps you keep your smile!
Keeping your mouth clean is called oral hygiene. 

To stay healthy, you should brush your teeth twice a day. It is good to brush after breakfast and before bed. Many people use toothpaste with fluoride. Fluoride is a tool that helps fix tooth enamel. Enamel is the hard part of your tooth. You should brush for at least two minutes. This removes more plaque than brushing for a short time.
Brushing is not enough on its own. A toothbrush only cleans about half of the plaque. Plaque is a sticky, yellow film made of bacteria.
Oral hygiene is the way we keep our mouths clean and healthy. 

To keep teeth clean, you must remove dental plaque. Plaque is a sticky, yellow film made of many different bacteria.
People have found ways to clean their teeth for a very long time. 
There are many specific facts about how to brush well. Most adults should brush at least twice a day. It is best to brush after breakfast and before going to sleep. You should brush for at least two minutes to remove the most plaque. Using toothpaste with fluoride is very helpful because it helps fix tooth enamel. 
Oral hygiene connects to many things in your daily life. You might see people using orthodontics to make their teeth straight. Some people use whitening treatments to make their teeth look brighter. Even if teeth are crooked or stained, a mouth can still be hygienic. Taking care of your teeth also helps your whole body. Studies show that regular brushing is linked to a lower risk of heart disease. By brushing and flossing daily, you are helping your entire body stay strong.
Oral hygiene is the practice of keeping the oral cavity clean to prevent disease and issues like bad breath. 
To understand how decay happens, we must look at dental plaque. Plaque, or dental biofilm, is a sticky, yellow film of bacteria. 
Effective cleaning requires a two-step process: brushing and interdental cleaning. A toothbrush alone is not enough because it only removes about 50% of the plaque on tooth surfaces.
Modern tools offer different ways to manage plaque. Manual toothbrushes use nylon bristles on a handle to reach the back of the mouth. 
Humans have used many different methods to clean their teeth throughout history. Archaeological evidence shows that people used chew sticks, twigs, bird feathers, and even animal bones. In Indian medicine, the neem tree was used to create cleaning twigs called daatun. In the Muslim world, the miswak, a root with antiseptic properties, has been used since the Islamic Golden Age. Some people also used baking soda or chalk, though this can increase tooth sensitivity. These diverse methods show that oral care has been a human priority for a very long time.
Research into the oral microbiome has changed how we view dental health. The oral microbiome is the community of microorganisms living in the mouth. Data shows that a commensal microflora, which is a healthy community, can switch to an opportunistic pathogenic flora. This change is driven by the host's environment rather than the bacteria themselves. During the Industrial Revolution, there was a marked shift toward a disease-associated microbiome. One specific bacterium, Streptococcus mutans, is the most important in causing caries. Today, caries is a major endemic disease affecting 60-90% of schoolchildren in industrialized countries.
Professional dental care provides additional layers of protection. Dentists can apply dental sealants to cover the fissures and grooves on the chewing surfaces of back teeth. This prevents food from becoming trapped and halts the decay process. Professionals also perform scaling, polishing, and sometimes debridement to remove tartar.
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