is there a dental tool i can buy to remove the plaque behind my teeth?

i don't have a problem with the front of my teeth, just behind my teeth, where there's a build-up of plaque i can't seem to remove with my tooth brush. there has to be some sort of dental tool i can use. i don't want to wait until i see my hygienist in 4 months. i want to take care of the problem myself.
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If you cant remove it with your toothbrush than it is tartar. You can by a scaler from walmart. But in order to completely remove it you need to go to the dentist before it builds up. Trust me I just had my tartar removed through a process called scaling and root planning. My mouth had to be numb for it. It was not a pleasant experience.
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