Designed to place a spherical dimple in almost any locale within the aligner. No warmth needed to attain the dimple. Just squeeze the plier on the desired spot to attain the dimple. Due to the design of the dimple plier it won't distort the aligner for the duration of placement. https://felixztlfw.ltfblog.com/32019060/orthodontic-aligner-pliers-for-dummies