PDR is especially effective on smooth, shallow dents where the metal has flexed rather than folded sharply

https://rylandzpx701.silverstonebrief.com/posts/prior-to-and-after-real-results-from-santa-clara-region-vehicle-body-shops

PDR is especially effective on smooth, shallow dents where the metal has flexed rather than folded sharply, allowing technicians to return the panel to its original contour.