The Tooth Tinted Plastic product can be softened in very hot water and become hard when cool, over and over. While soft, you could make a “tooth”. Use a pea-sized glob for a lower tooth. Press from behind until space is filled between neighboring teeth and bite down to adjust height. Make extra plastic spread out thinly along the bottom each way into nooks where 2 teeth meet the gum on 3-4 neighboring teeth. You can bond more softened plastic to area you have dipped in very hot water briefly. Polish by dipping very briefly and rubbing with a moist finger. Make an upper tooth slightly more material. Don't let the plastic entrap any of your teeth. If necessary, hold very hot water against it to soften material; scratch away surface, repeat.