I am undergoing orthodontic treatment for 2 and half years now. I have clear brace. initially they removed 4 tooth for my treatment. I had protruding upper jaw. now, lower jaw gap is removed completely, upperjaw gap still remains. doctor is saying to switch to metal brackets to finish the treatment sooner. they are also saying because of my current brace , my upper jaw are getting over torqued. Am i misguided here??