At the age of 60, there are normally 28 to 32 teeth, but the number of teeth in the mouth may decrease due to diseases such as caries or periodontitis caused by poor oral hygiene. 60 years old if you can maintain good oral hygiene, normal 28 to 32 teeth, that is, permanent teeth in the oral cavity from the age of 12 years after the state of not falling off, normal people from about 12 years old after the permanent teeth fully erupted will be accompanied by lifelong in the oral cavity, but due to poor oral hygiene, the teeth can be endodontic inflammation, dental caries, tooth loosening and other conditions that lead to the loss of teeth. Therefore, we should pay attention to oral hygiene and cleanliness in our daily life, and go to the hospital regularly to find out dental problems and deal with them in time, so that we can save as many permanent teeth as possible.