A pacifier cannot prevent teeth from coming in although prolonged pacifier use can prevent the teeth from proper development and lead to crooked or misaligned teeth.
Using a pacifier too long while the teeth are developing can also impact the roof of the child's mouth negatively and even cause issues with teeth alignment and also negatively affect overall dental growth.
If you pull out a kids tooth too early it can lead to crooked adult teeth and other dental issues later on as the baby teeth are essential for guiding the adult teeth or permanent teeth into place and also to help the jaw and facial structures develop.
The reason it's best to let baby teeth fall out by themselves is because the permanent tooth is usually not fully developed and ready to erupt once the baby tooth naturally falls out.
If you take out or pull out the baby tooth that is ready to fall out and pull the baby tooth out to early then the permanent tooth may not yet be ready to erupt and the permanent tooth may still be undergoing development in the jawbone.
Baby teeth will eventually becomes loose enough to fall out on their own and the child will not choke on it and will remove it once it falls out.
Some kids will wiggle the loose baby tooth and it will then eventually come out but there's no need to pull the loose baby tooth as it will eventually come out on it's own.
Although it is recommended that kids do gently wiggle the tooth to help it out but there's no need to actually do so if you don't want too.
Some dentists will recommend that parents encourage kids to gently wiggle the tooth with their finger or tongue until it naturally falls out on its own.
Pulling the tooth out before it is ready however may actually cause unnecessary bleeding and pain, which could be upsetting.
Most kids will start to lose their baby teeth around age 6, but pulling them out can cause your child pain and possibly infection.
Baby teeth are also a rich source of stem cells, and it's also recommended that parents should save the baby teeth.
If a child develops an illness at some point, those cells could be the required solution.
Simply put, medical and dental professionals can use the stem cells found in baby teeth to grow other tissue.