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An average healthy adult has 28-32 teeth. Of which, 28 are indispensable for everyone, the remaining 4 are wisdom teeth that grow "unruly". In particular, the time of wisdom teeth growth is different for each person, some people do not grow wisdom teeth throughout their lives. So does the number of teeth affect our health or longevity?

A survey and research by Danish experts on 573 subjects aged 70 to find the answer to the above question. After 21 years of follow-up, the results showed that elderly people who had lost all their teeth or had less than 10 teeth had a disability rate 2.81 times and 2.13 times higher than those with 20 teeth within 5 years, respectively.

Another survey by Swiss experts based on data from 10,000 middle-aged and elderly people around the world also showed that the average life expectancy of people with healthy teeth was 11.7 years longer than that of people who had lost teeth.

Research by Toshinobu Hirotomi and Japanese scientists noted that people with less than 19 teeth had twice the risk of death within 5 years compared to those with 20 teeth or more. The analysis is based on data from more than 500 people in their 70s.

Although these studies cannot conclude that tooth loss can shorten our life expectancy, they have shown that tooth loss affects the quality of life of middle-aged and elderly people, thereby affecting their life expectancy.

The harm of tooth loss

Many people think that humans have 28-32 teeth, missing one or two is not a problem. However, in fact, after a tooth falls out, it will affect the health of the whole body.

1. More teeth fall out

The gap formed by the loss of teeth will cause the teeth on both sides to gradually tilt due to lack of support when eating and chewing hard. Over time, the healthy teeth on both sides of the lost tooth will also gradually become loose. The teeth on the jaw opposite the lost tooth will also grow longer and longer due to lack of support from the opposite tooth, and will gradually become loose and fall out.

2. Difficulty speaking

Losing front teeth will affect pronunciation, and also greatly affect the teeth. When communicating with people, you will feel like you are out of breath, out of breath, and your voice is unclear, making it difficult for the listener.

3. Look older

Falling or crooked teeth can also "change" the shape of the face. We often see many elderly people with sunken mouths, which is because the lack of teeth will affect chewing. At the same time, it causes alveolar bone loss, causing the chin to move forward, the mouth to sink in, and looks very old.

4. Increased burden on the digestive system

After losing teeth, many people will have reduced chewing strength when eating. Although food that is not too small can still be swallowed, some foods with coarse fiber, if not chewed thoroughly, will put a burden on the digestive system. If this condition persists, it will cause diseases of the digestive tract.