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Home » “Brushing teeth before going to bed” Is it wrong? Doctor’s advice: If you don’t want your teeth to break early.
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“Brushing teeth before going to bed” Is it wrong? Doctor’s advice: If you don’t want your teeth to break early.

Last updated: 09/10/2025 6:43 pm
Dr. Mohit Agarwal
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Anyone who has seen a tooth can tell you the price of one is that expensive! There is even a saying among the people “one tooth is worth one house”.

Dental problems are not only related to the health of the teeth; they also contribute to the overall physical health of the person. But oral problems have become so widespread that more than 3.5 billion people suffer from them worldwide, and proper attention is needed from everyone.

1. Do teeth determine the length of life?

The mouth is a place where bacteria live, and in case of dental caries and periodontitis, it will produce bad breath, toothache, and other problems, and it will also bring negative effects to other parts of the body. Research found that, There is a linkage between oral disease and cardiovascular disease, stroke, diabetes, and the happening of diseases, for example, pneumonia.

Additionally, it is true that missing teeth can affect health in a large way. After a tooth is removed, the one beside it is not strong enough to move because of it and after a long time, the whole mouth will be affected. Also “the lack of teeth will affect the normal chewing function, causing the body to not be able to absorb the necessary nutrients” Slowly related to mortality from the digestive system cancer, mortality from heart diseases, and the number of deaths caused by strokes.

WHO had suggested “8020” plan, that is An 80-year-old man should have at least 20 functional teeth in his mouth . There are some studies that have revealed the death rate at 7 years to be 22% when the number of functional teeth is more than 20 in elderly people over 70 years old; 35% when the number of teeth is between 10 and 19; 50% when it is 1 to 9 teeth; and the risk rises up to 70% when the number is 0.

At the same time, a Swiss study of 10,000 middle-aged and elderly people from all over the world came to the conclusion that The average life span of physically fit individuals increased by 11.7 years compared to those with missing teeth.

2. If you don’t brush your teeth before going to bed vs. if you don’t brush your teeth in the morning, which one is more harmful?

Many people think that the loss of teeth after aging is the result of the natural course of aging. Most of the missing teeth, however, are caused by oral problems such as tooth decay and gum disease. A healthy tooth can be saved even when getting older if these diseases are treated actively.

Is it a habit for you to brush only once in the morning and once in the evening? That is the most common method.

The main point of dementia happening is its relation to poor dental care and dental diseases, as mentioned in the study that has been published in the journal Nature. The irregularity of dental visits increases the risk by 62%; The proportion of risk will be 60.1% if you brush your teeth fewer than 2 times a day ;If there is tooth decay, the risk will go up by 49%.

The study published in the journal Circulation points out that Porphyromonas gingivalis is the main cause of periodontitis. This agent, through blood circulation, can reach the left atrium from where it came, thus, heightening the risk of heart disease. The most efficacious way to lessen the development of periodontal disease is through brushing one’s dental. Brushing your teeth twice a day will lessen the risk of cardiovascular disease by 13% in comparison to ≤1 time.

Plaque formation on the tooth takes 12 hours, and it can be removed by mechanical friction with a toothbrush and toothpaste-assisted cleaning within 12 hours. Once more than 24 hours have passed, the plaque will have fully matured to become a complex microbiota, which is a state where it cannot be removed entirely by brushing, and it will continue to grow in the mouth, thus, affecting oral health.

However, it is still noteworthy to say that it is even more important to brush your teeth at night than in the morning.

Because “during night sleep, the amount of saliva secreted in the oral cavity will be significantly reduced, and the oral environment will become more suitable for bacterial reproduction”.

So does it imply that having breakfast without brushing your teeth first is filthy?

In reality, it is not that scaring if you skip your morning brushing and then eat. The plaque in your mouth will mix with the food and you will swallow it. Most bacteria will be killed by stomach acid, and most are the good bacteria that can help digestion.

Nevertheless, it doesnot mean that you dont have to brush your teeth in the morning. The majority of bacteria are accumulated in the mouth during the night. The bacteria that are in contact with the teeth for a long time become plaque on the surface, which leads to tooth demineralization. There are no particular requirements for brushing before or after meals in the morning, but you must do it and never miss it.

3. “Before going to bed” is not the best time. Are you correct?

But in fact, brushing your teeth before going to bed is the worst time!

Because the menthol ingredient in toothpaste may irritate the trigeminal nerve in the brain, which makes our sleepiness disappear, thus affecting our normal sleep. Also “the activity of brushing teeth will elevate the heart rate and body temperature, which will slightly disrupt sleep”.

The most scientifically correct time to brush your teeth is 30~60 minutes after dinner, at this time brushing your teeth can not only remove the remaining food but also create a sense of ritual and relaxation before going to bed. Be careful Do not brush your teeth right after eating, because the oral environment will “acidify” after meals, and the minerals on the teeth will be dissolved. Brushing will remove the minerals and affect dental health.

4. If you don’t brush your teeth well, you will really live a short life! How to brush?

The “European Journal of Clinical Research” journal published a study of 500,000 Indian people that indicated the importance of brushing and frequent failure to brush will affect the length of your life to a certain extent.

Who’s never or rarely brushed the mouth teeth, have a 12% higher ris

1 / 2 k of major vascular events, an 8% higher risk of total stroke, an 18% higher risk of cerebral hemorrhage, and a 22% higher risk of cor pulmonale compared to those who brush regularly. Also “non-brushing of teeth raises the risk of all-cause death by 25%, cancer by 9%, and chronic obstructive pulmonary disease by 12%” further.”

Apart from brushing your teeth thoroughly, also remember to brush your teeth hygienically! These few points matter a lot.

1. The brushing time should not be too short

Brush your teeth for 3 minutes each time, thus you can fully clean your mouth.

2. The toothbrush needs to be replaced for a long time

The toothbrush will “bloom” after being used for a long time. It is easy to hide dirt and bacteria inside, and it can also damage teeth and gums. The general recommendation is to replace the toothbrush every 3 months.

3. No need to use too much force

Teeth are not as hard as we think, so you should pay attention to the control of the strength when brushing your teeth. If you use too much force, it will damage your teeth and cause the gums to bleed and shrink.

4. Don’t just brush your teeth

The part of the tooth that needs to be cleaned the most is actually the area near the root of the gum. This place is prone to food residue and plaque. If it is not cleaned, dental stones will be generated, leading to periodontal disease.

The health of our teeth is closely related to the health of our whole body, and this should be serious enough. Even old people should take care, they may not lose their teeth when they get old!

Disclaimer: The following image/content has been generated by an Artificial Intelligence model and is not a photograph or a traditional human creation.

2024 01 19
Dr. Mohit Agarwal

“Dr. Mohit Agarwal is recognized as the Best Oncologist in Delhi, known for his caring approach and excellent cancer treatment. Honored by the President and Prime Minister of India, he has received awards like “Highest Patient Appreciation for Multiple Years” for his dedication to patient care. His expertise includes chemotherapy, breast cancer, and lung cancer treatment, making him the Best Chemotherapy Specialist in Delhi, a trusted Breast Cancer Specialist in Delhi, and the Best Lung Cancer Specialist in Delhi. As the Best Medical Oncologist in Delhi, Dr. Agarwal provides advanced, personalized cancer care, earning the trust and appreciation of his patients.”

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