pdr stands for paintless dent removal. a dent tech comes to my lot and removes small dents and dings from all of my cars. no painting is involved if it just a dent. they work the dent out with spoon shaped tools and pointed tools. they remove the dents from the back side of the body panel. these people are amazing. if they can get to the back of the dent, they can get it out. great for walmart dents.try this before you do anything else. call your local used car dealer to get a recomendation of who to use. expect to pay around 75 bucks laugh