YAMAHACHI DENTAL PRODUCTS USA’s composite resin teeth feature a three-layer structure, are available in VITA® shades and have a surface hardness that is twice as hard as acrylic teeth, according to the company. Natural-looking and stain-resistant, the teeth are available in Crown PX and Soluut PX Anteriors. Posteriors are available in Efucera PX, 20° and Simplerr PX, lingualized occlusion.