the permanent layer of teeth starts erupting from 6-7 years of age
yes back teeth can come out if they are first (milk) teeth they will be replaced but if they are second or adult teeth they can only be replaced with false teeth
no you are born with your milk teeth first then after they fall your adult teeth come into play
The second permanent molars come in around the ages of 12-13. That will give you 28 teeth total, until your wisdom teeth come in
You can not grow a new tooth. All your teeth are present at birth. Your first teeth come in while you are a baby but your second teeth are all ready there as small 'buds" ready to form and come in as you loose the first teeth. As you know, your last teeth do not come in until you are 17-20. Because they come in last and you are older, they are called wisdom teeth.
what is a layer a bacteria on your teeth it can lead to decay what is it is it plack
your teeth
it could but you will not have another one to come in after that
The outer layer of the tooth is enamel.
Yes they do, all teeth have a second set of teeth
Yes they do, all teeth have a second set of teeth
Dogs have similar teeth development to humans - they have one set of deciduous ("baby") teeth and a second set of permanent ("adult") teeth. However, once their permanent teeth come in, there are no replacements for them.
The first layer is Litter, the third is Humus, so the second layer would be Duff.