Are they common practise? Dentist here in Ireland said he's done very few here (he's from UK originally). He's only 6 and it's a molar. ds1 is 10 and same tooth hasn't come loose in his mouth yet so I'm assuming ds2 has at least 4 years before the adult molar comes out.
I@m a little apprehensive about it as dentist hasn't done that many but he said it's like a bridge only they won't glue it down (as no bone or adult tooth to anchor to) but must band to tooth behind. Band is thick however and will make back tooth harder to keep clean and I'm assuming therefore more vulnerable to decay?