Electric toothbrush?

I have otosclerosis and got an electric toothbrush for Christmas…one of those Soniccare ones. I was brushing my teeth with it this morning and after I was done, I noticed a low ringing-buzz in my bad ear. It wasn’t like the normal occasional tinnitus I have, it was lower and more “rushy”. Aside from being annoying, is this bad? Should I stop using the toothbrush?