Hatered of Ortho

Today i went to the ortho for my monthly checkup on my braces. Everything was fine until he told me that he needs to make my teeth narrower so that they line up better. At that point, i was scared because I had already got two of my teeth pulled out and now they are trying to this out my other teeth. They used a drill with grit in it to take off a 1/4 mm of enamel from each of my teeth. I almoat paniced because I knew what they were doing and i was afraid that they would mess up and destroy a tooth. In the end, all was better, I'm just worried about the chances of breaking teeth to be greater. I hate the way Ortho people think that a dental problem can be fixed by taking it out, not trying to work around it.