O le Dental Orthodontic Alignment Teeth Trainer A2 e faia i le mausali polyurethane, ma e talafeagai mo agamalu malocclud. O le A2 mea mautu mea na fuafuaina e faʻaaoga pe a maeʻa le A1, ma faʻaaogaina atili faʻavasega malosiʻaga i luga o nifo muamua.