I would try this product for one simple reason: I care about my health more than anyone else possibly could. Frankly, I don't trust that a dentist would do a better job at casting the mold than me.
This is absurd. I think you really underestimate the intensity of training that dentists must undergo, at least in the US. Dental school is just as rigorous and all-consuming as medical school.
There are reasons to advocate for the sort of DIY kit discussed in the article -- cost and time being the main ones. But thinking that you are somehow going to be more proficient at this sort of thing than a very extensively trained orthodontist is not one of them.
