Doing things for yourself is admirable.
I'm all for avoiding medical doctors if you absolutely don't need care.
However, dentistry is a whole different ball game.
There are only benefits to having this done right via a dentist (except for the $ you will spend)
There are only downsides to messing around with this yourself.
Dude, just get it done right at a reputable dentist and you won't regret it.