We want to get him braces now, what should we do? my son is 12 years . when he was 7 doctors remove his molar bce he got infection but they forgot to put space maintainer . now we want to braces. but doc said his 6th molar has covered the space of 5th. his 4th molar is fully grown. now i want to ask which tooth to remove. 4th which is fully grown or 5th which is undernaeth the skin.