How many teeth do people have

summary

Teeth are not only our lifelong partners, but also the common parts in our life. Therefore, we should actively prevent all kinds of dental diseases, which is our lifelong responsibility, but many people do not know how many teeth they have. Now, I'd like to talk about how many teeth people have.

How many teeth do people have

First of all: under normal circumstances, in the deciduous dentition, there should be 20 teeth in the oral cavity, respectively: 4 deciduous central incisors, 4 deciduous lateral incisors, 4 deciduous canines and 8 deciduous molars; while in the permanent dentition, the number of teeth in the oral cavity should be 28-32 teeth, respectively: 4 central incisors, 4 lateral incisors, 4 canines, 8 bicuspines and 8-12 molars. These homonymous teeth are symmetrically distributed on both sides of the maxilla and mandible.

Second: more or less than this number range are abnormal, often due to abnormal tooth germ development. More than the normal number is called "supernumerary teeth"; less than the normal number is called "missing teeth". Supernumerary teeth mostly occur in the central incisor area, some are embedded in the jaw; missing teeth are common in the maxillary lateral incisor and mandibular second premolar, which are generally symmetrical.

Finally: there are 48-52 teeth in one's life, including 20 deciduous teeth and 28-32 permanent teeth. Deciduous teeth exist in the oral cavity for about five to six years, while permanent teeth exist in the oral cavity for a long time, and they are used for life after eruption. After deciduous teeth fall off, they are replaced by permanent teeth. When permanent teeth fall off for various reasons, there is no replaceable tooth.

matters needing attention

If there are problems with teeth, they should be repaired in time. Healthy teeth have many benefits to the human body, which is conducive to prolonging life.