There is no authoritative data on the average lifespan of a tooth. It is generally said that a tooth can last 50 to 60 years, but if it is well protected, it can last a lifetime. The actual life expectancy varies somewhat depending on the oral care and condition of your teeth.
1. Teeth are one of the important organs of the human body, generally there are twenty milk teeth, permanent teeth, that is, adult teeth are about 28 to 32; its main performance chewing, pronunciation and maintain the role of facial aesthetics.
2. The specific life span of the teeth is mainly determined by the oral hygiene environment and the development of the teeth themselves; first of all, if you do a good job of oral care, that is to say, the use of the correct way of brushing, and maintain a good diet, avoid eating too hard, too sweet or too acidic food in order to effectively prolong the life of the teeth; if the teeth themselves are better developed, more solid and durable dentin, the service life of the teeth will be relatively longer.