Because we don't use unsightly and inconvenient attachments, and because our aligners fit so snugly, we need very accurate impressions. We cannot use impressions with scrapes, drag marks, lack of gum lines, lack of complete teeth contours and so on.  If we did then your aligners may not fit properly. 

Getting a great impression sometimes takes a bit more practice: but it's totally worth it. With your great impressions, we can create your super clear and comfortable aligners that straighten your teeth in the best way possible.