If it doesn't grow well, or if it doesn't have the opposite jaw teeth or can't grow, it needs to be pulled out in the hospital.
2. There are 20 deciduous teeth and 32, 30 or 28 permanent teeth. People have to experience the replacement of primary teeth and permanent teeth all their lives. When I was 20 years old, I had a posterior molar, but one of them was crooked. I pulled it out because I was afraid of squeezing into the next tooth, so don't worry, but pay attention to whether it is crooked. In that case, you should see a doctor and take a photo to see if it is necessary to remove it.
References:
Medical college health university