As for the need to extract eighth teeth or “wisdom teeth” - the indications for treatment with aligners are the same as for treatment with braces. Usually, the extraction of these teeth is necessary in most cases. Unfortunately, a problem for the majority of the modern population is that over time, due to eighths, crowding of the front teeth occurs, i.e. when growing out, the back teeth shift the neighboring ones. But this is very individual. Only a doctor can answer unequivocally in your case after an examination.