About brace treatment - timing for the perfect smile. (photo)

Hi doctor, myself from india.i m under bracetreatment from last june 2016.i want to know tht how much time it ll' take to get a perfect smile. And i have an another query tht from last 3 months my doctor has nt changed the wires .only he has changed tht plastic rubbers which are used to fix the wires.bt as per my knowledge the wires sud be changed in an interval of 30 or 45 days .so pls consider my qs and help me to know tht wheather my treatment is on the right way or not.

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