Hi There is only one answer to this if you really want to get onto of your dental problems then you have to go to the dentist.Tell the dentist that you are alittle frighten and they will talk you though what they are doing.Ask around your friends if they know a good dentist.
I'm in and out the dentist alot these days as I have braces on and I was scared through some parts of the dentist but I thought I want to get my teeth healthy so I have to do this and I will not die.
Good luck with everything